fixed sinking-rotation, volumeslider; deleted TODO comments

added client hosts a server
added javadoc comments

.editorconfig

@@ -1,14 +0,0 @@
-root = true
-
-[*]
-charset = utf-8
-end_of_line = lf
-insert_final_newline = true
-trim_trailing_whitespace = true
-
-[*.java]
-indent_style = space
-indent_size = 4
-
-[*.txt]
-indent_style = tab

.gitattributes

@@ -1,59 +0,0 @@
-# Git configuration files
-.gitattributes text
-.gitignore text
-.gitconfig text
-.gitmodules text
-
-# Documentation
-*.md text
-*.txt text
-AUTHORS text
-CHANGELOG text
-CHANGES text
-CONTRIBUTING text
-COPYING text
-INSTALL text
-LICENSE text
-NEWS text
-TODO text
-
-# Java sources
-*.java          text diff=java
-*.kt            text diff=kotlin
-*.groovy        text diff=java
-*.scala         text diff=java
-*.gradle        text diff=java
-*.gradle.kts    text diff=kotlin
-
-# Normalize text files (Convert crlf => lf)
-*.css           text diff=css
-*.scss          text diff=css
-*.sass          text
-*.df            text
-*.htm           text diff=html
-*.html          text diff=html
-*.js            text
-*.mjs           text
-*.cjs           text
-*.jsp           text
-*.jspf          text
-*.jspx          text
-*.properties    text
-*.tld           text
-*.tag           text
-*.tagx          text
-*.xml           text
-
-# Binary files
-# (binary is a macro for -text -diff)
-*.class         binary
-*.dll           binary
-*.ear           binary
-*.jar           binary
-*.so            binary
-*.war           binary
-*.jks           binary
-
-# Build tool wrappers
-mvnw            text eol=lf
-gradlew         text eol=lf

.gitignore

@@ -1,43 +1,26 @@
+# Gradle
 .gradle
-build/
-#!gradle/wrapper/gradle-wrapper.jar
-#!**/src/main/**/build/
-#!**/src/test/**/build/
+build
 
-### IntelliJ IDEA ###
-.idea
-.idea/modules.xml
-.idea/jarRepositories.xml
-.idea/compiler.xml
-.idea/libraries/
-*.iws
+# VSC
+bin
+
+# IntelliJ
 *.iml
-*.ipr
-out/
-#!**/src/main/**/out/
-#!**/src/test/**/out/
+.idea
+out
 
-### Eclipse ###
-.apt_generated
+# Eclipse
 .classpath
-.factorypath
 .project
-.settings
-.springBeans
-.sts4-cache
-bin/
-#!**/src/main/**/bin/
-#!**/src/test/**/bin/
 
-### NetBeans ###
-/nbproject/private/
-/nbbuild/
-/dist/
-/nbdist/
-/.nb-gradle/
+# Libraries
+*.so
+*.dylib
+*.dll
+*.jar
+*.class
 
-### VS Code ###
-.vscode/
-
-### Mac OS ###
 .DS_Store
+!Projekte/gradle/wrapper/gradle-wrapper.jar
+

Projekte/.gitattributes

@@ -0,0 +1,3 @@
+*.bat           text eol=crlf
+gradlew         text eol=lf
+

Projekte/.run/BattleshipApp (Mac).run.xml

@@ -0,0 +1,18 @@
+<component name="ProjectRunConfigurationManager">
+    <configuration default="false" name="BattleshipApp (Mac)" type="Application" factoryName="Application"
+                   singleton="false">
+        <option name="MAIN_CLASS_NAME" value="pp.battleship.client.BattleshipApp"/>
+        <module name="Projekte.battleship.client.main"/>
+        <option name="VM_PARAMETERS" value="-XstartOnFirstThread"/>
+        <option name="WORKING_DIRECTORY" value="$MODULE_WORKING_DIR$"/>
+        <extension name="coverage">
+            <pattern>
+                <option name="PATTERN" value="pp.battleship.client.*"/>
+                <option name="ENABLED" value="true"/>
+            </pattern>
+        </extension>
+        <method v="2">
+            <option name="Make" enabled="true"/>
+        </method>
+    </configuration>
+</component>

Projekte/.run/BattleshipApp.run.xml

@@ -1,13 +1,13 @@
 <component name="ProjectRunConfigurationManager">
-  <configuration default="false" name="MdgaApp" type="Application" factoryName="Application" singleton="false"
+  <configuration default="false" name="BattleshipApp" type="Application" factoryName="Application" singleton="false"
                  nameIsGenerated="true">
-    <option name="MAIN_CLASS_NAME" value="pp.mdga.client.MdgaApp"/>
-    <module name="Projekte.mdga.client.main"/>
+    <option name="MAIN_CLASS_NAME" value="pp.battleship.client.BattleshipApp"/>
+    <module name="Projekte.battleship.client.main"/>
     <option name="VM_PARAMETERS" value="-Djava.util.logging.config.file=logging.properties"/>
     <option name="WORKING_DIRECTORY" value="$MODULE_WORKING_DIR$"/>
     <extension name="coverage">
       <pattern>
-        <option name="PATTERN" value="pp.mdga.client.*"/>
+        <option name="PATTERN" value="pp.battleship.client.*"/>
         <option name="ENABLED" value="true"/>
       </pattern>
     </extension>
@@ -15,4 +15,4 @@
       <option name="Make" enabled="true"/>
     </method>
   </configuration>
-</component>
+</component>

Projekte/.run/BattleshipServer.run.xml

@@ -0,0 +1,17 @@
+<component name="ProjectRunConfigurationManager">
+  <configuration default="false" name="BattleshipServer" type="Application" factoryName="Application"
+                 nameIsGenerated="true">
+    <option name="MAIN_CLASS_NAME" value="pp.battleship.server.BattleshipServer"/>
+    <module name="Projekte.battleship.server.main"/>
+    <option name="WORKING_DIRECTORY" value="$MODULE_WORKING_DIR$"/>
+    <extension name="coverage">
+      <pattern>
+        <option name="PATTERN" value="pp.battleship.server.*"/>
+        <option name="ENABLED" value="true"/>
+      </pattern>
+    </extension>
+    <method v="2">
+      <option name="Make" enabled="true"/>
+    </method>
+  </configuration>
+</component>

Projekte/.run/Projekte [test].run.xml

@@ -0,0 +1,24 @@
+<component name="ProjectRunConfigurationManager">
+  <configuration default="false" name="Projekte [test]" type="GradleRunConfiguration" factoryName="Gradle">
+    <ExternalSystemSettings>
+      <option name="executionName" />
+      <option name="externalProjectPath" value="$PROJECT_DIR$" />
+      <option name="externalSystemIdString" value="GRADLE" />
+      <option name="scriptParameters" value="--continue" />
+      <option name="taskDescriptions">
+        <list />
+      </option>
+      <option name="taskNames">
+        <list>
+          <option value="test" />
+        </list>
+      </option>
+      <option name="vmOptions" />
+    </ExternalSystemSettings>
+    <ExternalSystemDebugServerProcess>true</ExternalSystemDebugServerProcess>
+    <ExternalSystemReattachDebugProcess>true</ExternalSystemReattachDebugProcess>
+    <DebugAllEnabled>false</DebugAllEnabled>
+    <RunAsTest>false</RunAsTest>
+    <method v="2" />
+  </configuration>
+</component>

Projekte/README.md

@@ -0,0 +1,189 @@
+# Beispielprogramme des Programmierprojekts
+
+Hier ist der Quellcode für das in der Einarbeitungsphase genutzte Spiel
+_Battleships_ zu finden. Die Quellen bestehen aus den folgenden
+Gradle-Unterprojekten:
+
+* _:battleship:server_
+* _:battleship:client_
+* _:battleship:model_
+* _:battleship:converter_
+* _:common_
+* _:jme-common_
+
+_Battleships_ ist ein netzwerkbasiertes Spiel und besteht aus einem Server- und
+einem Clientanteil, die in den Unterprojekten _:battleship:server_ und
+_:battleship:client_ realisiert sind. Beide nutzen das Unterprojekt
+_:battleship:model_, das den gemeinsamen Modellanteil enthält.
+
+Die Unterprojekte _:common_ und _:jme-common_ enthalten Hilfsklassen.
+
+Das Unterprojekt _:battleship:converter_ wird für _Battleships_ selbst nicht
+benötigt, sondern enthält lediglich den Code, um ein im Spiel verwendetes
+3d-Modell eines Schlachtschiffs in eine _J3O_-Datei umzuwandeln, die von jME
+einfacher geladen werden kann.
+
+## 1 Vorbereitung
+
+Für das Programmierprojekt empfehlen wir die Verwendung von Java 20. Unter Linux
+sollte [_Eclipse Temurin_](https://adoptium.net/temurin/releases/?version=20)
+als JDK verwendet werden, andere JDKs können unter Linux Probleme verursachen.
+Auf anderen Betriebssystemen empfehlen wir aber ebenfalls Temurin. Im Folgenden
+ist beschrieben, wie Sie Temurin installieren und die Umgebungsvariable
+**JAVA_HOME** richtig setzen, damit Sie Gradle (siehe unten) verwenden können.
+
+### 1.1 Installation von Temurin
+
+Laden Sie [_Eclipse Temurin_](https://adoptium.net/temurin/releases/?version=20)
+entsprechend Ihrem Betriebssystem und Ihrer Prozessorarchitektur herunter und
+entpacken Sie das Archiv in einem Verzeichnis Ihrer Wahl auf Ihrem Rechner.
+
+### 1.2 Setzen von JAVA_HOME
+
+Zur Verwendung mit Gradle muss die Umgebungsvariable **JAVA_HOME** richtig
+gesetzt werden. Folgen Sie dazu den nachfolgenden Anweisungen entsprechend Ihrem
+Betriebssystem:
+
+* **Windows:**
+
+  Öffnen Sie ihre Powershell (Core) bzw. ihr Windows Terminal mit Powershell
+  (Core). Überprüfen Sie, ob die Umgebungsvariable korrekt gesetzt ist:  
+  `Get-ChildItem -Path Env:JAVA_HOME`  
+  Falls kein oder ein falscher Pfad gesetzt ist, setzen Sie diesen mit dem
+  folgenden Kommando (in einer Zeile):  
+  `[System.Environment]::SetEnvironmentVariable('JAVA_HOME','<Pfad zum SDK>',[System.EnvironmentVariableTarget]::User)`
+
+  Alternativ können Sie die GUI verwenden. Unter Windows 10 klicken Sie die
+  Windows-Taste und dann das Zahnrad um die Einstellungen zu öffnen. Dort wählen
+  Sie "System", dann "Info" (links unten) und nun
+  "Erweiterte Systemeinstellungen" (rechts) um den Dialog "Systemeigenschaften"
+  zu starten. Im Reiter "Erweitert" klicken Sie
+  "Umgebungsvariablen..." und klicken dann unter "Benutzervariablen" den Knopf
+  "Neu..." um JAVA_HOME anzulegen oder "Bearbeiten" um ihn zu ändern. Geben Sie
+  als Name `JAVA_HOME` und als Wert den Pfad ein. Schließen Sie mit "OK".
+
+  > **(!) Beachten Sie, dass Sie die jeweilige Applikation neu starten müssen**,
+  > um von der gesetzten Umgebungsvariablen Notiz zu nehmen.
+  > Dies betrifft auch die Shell, die Sie gerade verwenden.
+
+* **UNIX (Linux/MacOS):**
+
+  Öffnen oder erstellen Sie die Datei `~/.profile` (wenn Sie die Bash verwenden;
+  bei anderen Shells sind es andere Dateien) und ergänzen Sie am Ende der Datei
+  die Zeile:
+
+  `export JAVA_HOME="<Pfad zum entpackten Archiv>"`
+
+  Ersetzen Sie dabei `<Pfad zum entpackten Archiv>` mit dem entsprechenden Pfad.
+  Zum Beispiel:
+
+  `export JAVA_HOME="/home/user/jdk-20.0.2"`
+
+  Fügen Sie dann die folgende Zeile hinzu:
+
+  `export PATH="$JAVA_HOME/bin:$PATH"`
+
+## 2 Programmstart
+
+Grundsätzlich kann man das gesamte Projekt einfach in IntelliJ öffnen. Details
+dazu sind im Aufgabenblatt zur Einarbeitungsaufgabe zu finden. Im Folgenden ist
+beschrieben, wie die _Batttleships_ unmittelbar von der Kommandozeile gestartet
+werden können.
+
+Um _Battleships_ spielen zu können, muss man zuerst das Server-Programm auf
+einem Rechner und dann zweimal das Client-Programm auf beliebigen Rechnern
+starten, die TCP/IP-Verbindungen zum Server erlauben. Natürlich ist es auch
+möglich, alle drei Programme auf demselben Rechner zu starten.
+
+Es empfiehlt sich der Start von der Kommandozeile. Will man alle drei Programme
+auf demselben Rechner starten, sollte man dazu drei Shell-Instanzen öffnen und
+in jeder eines der Programme starten. Auf diese Weise können die
+Logging-Ausgaben der drei Programme voneinander unterschieden werden.
+
+Das Server-Programm startet man unmittelbar mit Gradle mit
+
+`./gradlew :battleship:server:run`
+
+Unter Windows kann es je nach Shell (Eingabeaufforderung cmd) erforderlich sein,
+`/` jeweils durch `\ ` zu ersetzen.
+
+Im Verzeichnis `battleship/server` befindet sich die Datei `config.propeties`,
+worüber sich der Server konfigurieren lässt. Mit der Zeile `port=1234` lässt
+sich der verwendete Server-Port (hier 1234) einstellen. Außerdem befindet sich
+dort die Datei `logging.properties`, womit das Logging des Servers konfiguriert
+wird.
+
+Das Client-Programm startet man unmittelbar mit Gradle mit
+
+`./gradlew :battleship:client:run`
+
+Die Datei `logging.properties` im Verzeichnis `battleship/client` konfiguriert
+das Logging des Clients.
+
+Alternativ kann man auch die Start-Skripte
+
+* `./battleship/server/build/install/battleship-server/bin/battleship-server`
+* `./battleship/client/build/install/battleship/bin/battleship`
+
+direkt in der Kommandozeile starten. Allerdings müssen sie zuvor mittels
+
+`./gradlew installDist`
+
+erzeugt worden sein. Beachten Sie aber, dass nur im **aktuellen
+Arbeitsverzeichnis** nach den Dateien `config.properties` und
+`logging.properties` gesucht wird und diese geladen werden. Das heißt, dass die
+vordefinierten Dateien in den Verzeichnissen `battleship/server` und
+`battleship/client` nur dann gelesen werden, wenn Sie diese Verzeichnisse als
+aktuelle Arbeitsverzeichnisse nutzen. Wie üblich müssen Sie dazu in der
+Kommandozeile
+
+`cd battleship/server`
+
+bzw.
+
+`cd battleship/client`
+
+eingeben.
+
+## 3 Hinweise zu _Battleships_
+
+Der _Battleships_-Client hat ein Menü, in das man immer mit der
+Esc-Taste kommt. Aus dem Menü heraus lässt sich das Programm auch schließen.
+Beachte, dass sich beim Laden und Speichern eines Spiels kein Dateidialog
+öffnet. Vielmehr muss man den Dateipfad in das Dialogfeld eingeben. Da
+JSON-Dateien geschrieben werden, empfiehlt sich das Datei-Suffix _.json_.
+
+## 4 Allgemeine Gradle-Tasks:
+
+- `./gradlew clean`
+
+  Entfernt alle `build`-Verzeichnisse und alle erzeugten Dateien.
+
+- `./gradlew classes`
+
+  Übersetzt den Quellcode und legt unter build den Bytecode sowie
+  Ressourcen ab.
+
+- `./gradlew javadoc`
+
+  Erzeugt die Dokumentation aus den JavaDoc-Kommentaren im Verzeichnis
+  `build/docs/javadoc` des jeweiligen Unterprojekts.
+
+- `./gradlew test`
+
+  Führt die JUnit-Tests durch. Ergebnisse sind im Verzeichnis
+  `build/reports/tests` des jeweiligen Unterprojekts zu finden.
+
+- `./gradlew build`
+
+  Führt die JUnit-Tests durch und erstellt in `build/distributions`
+  gepackte Distributionsdateien
+
+- `./gradlew installDist`
+
+  Erstellt unter `battleship/client/build/install` und
+  `battleship/server/build/install` Verzeichnisse, die jeweils eine ausführbare
+  Distribution samt Start-Skripten enthält (siehe oben).
+
+---
+Juli 2024

Projekte/battleship/client/build.gradle

@@ -2,10 +2,11 @@
     id 'buildlogic.jme-application-conventions'
 }
 
-description = 'mdga client'
+description = 'Battleship Client'
 
 dependencies {
-    implementation project(":mdga:model")
+    implementation project(":jme-common")
+    implementation project(":battleship:model")
 
     implementation libs.jme3.desktop
 
@@ -16,6 +17,6 @@ implementation project(":mdga:model")
 }
 
 application {
-    mainClass = 'pp.mdga.client.MdgaApp'
-    applicationName = 'MDGA'
-}
+    mainClass = 'pp.battleship.client.BattleshipApp'
+    applicationName = 'battleship'
+}

Projekte/battleship/client/client.properties

@@ -0,0 +1,76 @@
+########################################
+## Programming project code
+## UniBw M, 2022, 2023, 2024
+## www.unibw.de/inf2
+## (c) Mark Minas (mark.minas@unibw.de)
+########################################
+#
+# Battleship client configuration
+#
+# Specifies the map used by the opponent in single mode.
+# Single mode is activated if this property is set.
+#map.opponent=maps/map2.json
+#
+# Specifies the map used by the player in single mode.
+# The player must define their own map if this property is not set.
+map.own=maps/map1.json
+#
+# Coordinates of the shots fired by the RobotClient in the order listed.
+# Example:
+#   2, 0,\
+#   2, 1,\
+#   2, 2,\
+#   2, 3
+#  defines four shots, namely at the coordinates
+#  (x=2, y=0), (x=2, y=1), (x=2, y=2), and (x=2, y=3)
+robot.targets=2, 0,\
+              2, 1,\
+              2, 2,\
+              2, 3,\
+              2, 4,\
+              2, 5,\
+              2, 6
+#
+# Delay in milliseconds between each shot fired by the RobotClient.
+robot.delay=4000
+#
+# The dimensions of the game map used in single mode.
+# 'map.width' defines the number of columns, and 'map.height' defines the number of rows.
+map.width=10
+map.height=10
+#
+# The number of ships of each length available in single mode.
+# The value is a comma-separated list where each element corresponds to the number of ships
+# with a specific length. For example:
+# ship.nums=4, 3, 2, 1
+# This configuration means:
+#   - 4 ships of length 1
+#   - 3 ships of length 2
+#   - 2 ships of length 3
+#   - 1 ship of length 4
+ship.nums=4, 3, 2, 1
+#
+# Screen settings
+#
+# Color of the text displayed at the top of the overlay.
+# The format is (red, green, blue, alpha) where each value ranges from 0 to 1.
+overlay.top.color=1, 1, 1, 1
+#
+# Application settings configuration
+# Determines whether the settings window is shown at startup.
+settings.show=false
+#
+# Specifies the width of the application window in pixels.
+settings.resolution.width=1200
+#
+# Specifies the height of the application window in pixels.
+settings.resolution.height=800
+#
+# Determines whether the application runs in full-screen mode.
+settings.full-screen=false
+#
+# Enables or disables gamma correction to improve color accuracy.
+settings.use-gamma-correction=true
+#
+# Indicates whether the statistics window is displayed during gameplay.
+statistics.show=false

Projekte/battleship/client/logging.properties

@@ -0,0 +1,8 @@
+handlers=java.util.logging.ConsoleHandler
+.level=INFO
+pp.level=FINE
+com.jme3.network.level=INFO
+;com.jme3.util.TangentBinormalGenerator.level=SEVERE
+java.util.logging.ConsoleHandler.level=FINER
+java.util.logging.ConsoleHandler.formatter=java.util.logging.SimpleFormatter
+;java.util.logging.SimpleFormatter.format=[%4$s %2$s] %5$s%n

Projekte/battleship/client/maps/map1.json

@@ -0,0 +1,66 @@
+{
+  "width": 10,
+  "height": 10,
+  "ships": [
+    {
+      "length": 4,
+      "x": 2,
+      "y": 8,
+      "rot": "RIGHT"
+    },
+    {
+      "length": 3,
+      "x": 2,
+      "y": 5,
+      "rot": "DOWN"
+    },
+    {
+      "length": 3,
+      "x": 5,
+      "y": 6,
+      "rot": "RIGHT"
+    },
+    {
+      "length": 2,
+      "x": 4,
+      "y": 4,
+      "rot": "RIGHT"
+    },
+    {
+      "length": 2,
+      "x": 7,
+      "y": 4,
+      "rot": "RIGHT"
+    },
+    {
+      "length": 2,
+      "x": 4,
+      "y": 2,
+      "rot": "DOWN"
+    },
+    {
+      "length": 1,
+      "x": 6,
+      "y": 2,
+      "rot": "RIGHT"
+    },
+    {
+      "length": 1,
+      "x": 8,
+      "y": 2,
+      "rot": "RIGHT"
+    },
+    {
+      "length": 1,
+      "x": 6,
+      "y": 0,
+      "rot": "RIGHT"
+    },
+    {
+      "length": 1,
+      "x": 8,
+      "y": 0,
+      "rot": "RIGHT"
+    }
+  ]
+}

Projekte/battleship/client/maps/map2.json

@@ -0,0 +1,66 @@
+{
+  "width": 10,
+  "height": 10,
+  "ships": [
+    {
+      "length": 4,
+      "x": 0,
+      "y": 5,
+      "rot": "DOWN"
+    },
+    {
+      "length": 3,
+      "x": 0,
+      "y": 9,
+      "rot": "DOWN"
+    },
+    {
+      "length": 3,
+      "x": 2,
+      "y": 6,
+      "rot": "RIGHT"
+    },
+    {
+      "length": 2,
+      "x": 4,
+      "y": 8,
+      "rot": "RIGHT"
+    },
+    {
+      "length": 2,
+      "x": 2,
+      "y": 4,
+      "rot": "DOWN"
+    },
+    {
+      "length": 2,
+      "x": 2,
+      "y": 1,
+      "rot": "DOWN"
+    },
+    {
+      "length": 1,
+      "x": 6,
+      "y": 2,
+      "rot": "RIGHT"
+    },
+    {
+      "length": 1,
+      "x": 8,
+      "y": 2,
+      "rot": "RIGHT"
+    },
+    {
+      "length": 1,
+      "x": 6,
+      "y": 0,
+      "rot": "RIGHT"
+    },
+    {
+      "length": 1,
+      "x": 8,
+      "y": 0,
+      "rot": "RIGHT"
+    }
+  ]
+}

Projekte/battleship/client/src/main/java/pp/battleship/client/BattleshipApp.java

@@ -0,0 +1,446 @@
+////////////////////////////////////////
+// Programming project code
+// UniBw M, 2022, 2023, 2024
+// www.unibw.de/inf2
+// (c) Mark Minas (mark.minas@unibw.de)
+////////////////////////////////////////
+
+package pp.battleship.client;
+
+import com.jme3.app.DebugKeysAppState;
+import com.jme3.app.SimpleApplication;
+import com.jme3.app.StatsAppState;
+import com.jme3.font.BitmapFont;
+import com.jme3.font.BitmapText;
+import com.jme3.input.KeyInput;
+import com.jme3.input.MouseInput;
+import com.jme3.input.controls.ActionListener;
+import com.jme3.input.controls.KeyTrigger;
+import com.jme3.input.controls.MouseButtonTrigger;
+import com.jme3.system.AppSettings;
+import com.simsilica.lemur.GuiGlobals;
+import com.simsilica.lemur.style.BaseStyles;
+import pp.battleship.client.gui.BattleAppState;
+import pp.battleship.client.gui.EditorAppState;
+import pp.battleship.client.gui.SeaAppState;
+import pp.battleship.game.client.BattleshipClient;
+import pp.battleship.game.client.ClientGameLogic;
+import pp.battleship.game.client.ServerConnection;
+import pp.battleship.game.singlemode.BattleshipClientConfig;
+import pp.battleship.game.singlemode.ServerConnectionMockup;
+import pp.battleship.notification.ClientStateEvent;
+import pp.battleship.notification.GameEventListener;
+import pp.battleship.notification.InfoTextEvent;
+import pp.dialog.DialogBuilder;
+import pp.dialog.DialogManager;
+import pp.graphics.Draw;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.lang.System.Logger;
+import java.lang.System.Logger.Level;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.logging.LogManager;
+
+import static pp.battleship.Resources.lookup;
+
+/**
+ * The main class for the Battleship client application.
+ * It manages the initialization, input setup, GUI setup, and game states for the client.
+ */
+public class BattleshipApp extends SimpleApplication implements BattleshipClient, GameEventListener {
+
+    /**
+     * Logger for logging messages within the application.
+     */
+    private static final Logger LOGGER = System.getLogger(BattleshipApp.class.getName());
+
+    /**
+     * Path to the styles script for GUI elements.
+     */
+    private static final String STYLES_SCRIPT = "Interface/Lemur/pp-styles.groovy"; //NON-NLS
+
+    /**
+     * Path to the font resource used in the GUI.
+     */
+    private static final String FONT = "Interface/Fonts/Default.fnt"; //NON-NLS
+
+    /**
+     * Path to the client configuration file, if one exists.
+     */
+    private static final File CONFIG_FILE = new File("client.properties");
+
+    /**
+     * Input mapping name for mouse clicks.
+     */
+    public static final String CLICK = "CLICK";
+
+    /**
+     * Input mapping name for the Escape key.
+     */
+    private static final String ESC = "ESC";
+
+    /**
+     * Manager for handling dialogs within the application.
+     */
+    private final DialogManager dialogManager = new DialogManager(this);
+
+    /**
+     * The server connection instance, used for communicating with the game server.
+     */
+    private final ServerConnection serverConnection;
+
+    /**
+     * Instance of the {@link Draw} class for rendering graphics.
+     */
+    private Draw draw;
+
+    /**
+     * Text display at the top of the GUI for showing information to the user.
+     */
+    private BitmapText topText;
+
+    /**
+     * Executor service for handling asynchronous tasks within the application.
+     */
+    private ExecutorService executor;
+
+    /**
+     * Handler for managing the client's game logic.
+     */
+    private final ClientGameLogic logic;
+
+    /**
+     * Configuration settings for the Battleship client application.
+     */
+    private final BattleshipAppConfig config;
+
+    /**
+     * Listener for handling actions triggered by the Escape key.
+     */
+    private final ActionListener escapeListener = (name, isPressed, tpf) -> escape(isPressed);
+
+    private EffectHandler effectHandler;
+
+    static {
+        // Configure logging
+        LogManager manager = LogManager.getLogManager();
+        try {
+            manager.readConfiguration(new FileInputStream("logging.properties"));
+            LOGGER.log(Level.INFO, "Successfully read logging properties"); //NON-NLS
+        }
+        catch (IOException e) {
+            LOGGER.log(Level.INFO, e.getMessage());
+        }
+    }
+
+    /**
+     * Starts the Battleship application.
+     *
+     * @param args Command-line arguments for launching the application.
+     */
+    public static void main(String[] args) {
+        new BattleshipApp().start();
+    }
+
+    /**
+     * Constructs a new {@code BattleshipApp} instance.
+     * Initializes the configuration, server connection, and game logic listeners.
+     */
+    private BattleshipApp() {
+        config = new BattleshipAppConfig();
+        config.readFromIfExists(CONFIG_FILE);
+        serverConnection = makeServerConnection();
+        logic = new ClientGameLogic(serverConnection);
+        logic.addListener(this);
+        setShowSettings(config.getShowSettings());
+        setSettings(makeSettings());
+        effectHandler = null;
+    }
+
+    /**
+     * Creates and configures application settings from the client configuration.
+     *
+     * @return A configured {@link AppSettings} object.
+     */
+    private AppSettings makeSettings() {
+        final AppSettings settings = new AppSettings(true);
+        settings.setTitle(lookup("battleship.name"));
+        settings.setResolution(config.getResolutionWidth(), config.getResolutionHeight());
+        settings.setFullscreen(config.fullScreen());
+        settings.setUseRetinaFrameBuffer(config.useRetinaFrameBuffer());
+        settings.setGammaCorrection(config.useGammaCorrection());
+        return settings;
+    }
+
+    /**
+     * Factory method for creating a server connection based on the current
+     * client configuration.
+     *
+     * @return A {@link ServerConnection} instance, which could be a real or mock server.
+     */
+    private ServerConnection makeServerConnection() {
+        if (config.isSingleMode())
+            return new ServerConnectionMockup(this);
+        return new NetworkSupport(this);
+    }
+
+    /**
+     * Returns the dialog manager responsible for managing in-game dialogs.
+     *
+     * @return The {@link DialogManager} instance.
+     */
+    DialogManager getDialogManager() {
+        return dialogManager;
+    }
+
+    /**
+     * Returns the game logic handler for the client.
+     *
+     * @return The {@link ClientGameLogic} instance.
+     */
+    @Override
+    public ClientGameLogic getGameLogic() {
+        return logic;
+    }
+
+    /**
+     * Returns the current configuration settings for the Battleship client.
+     *
+     * @return The {@link BattleshipClientConfig} instance.
+     */
+    @Override
+    public BattleshipAppConfig getConfig() {
+        return config;
+    }
+
+    /**
+     * Initializes the application.
+     * Sets up input mappings, GUI, game states, and connects to the server.
+     */
+    @Override
+    public void simpleInitApp() {
+        setPauseOnLostFocus(false);
+        draw = new Draw(assetManager);
+        setupInput();
+        setupStates();
+        setupGui();
+        effectHandler = new EffectHandler(this);
+        serverConnection.connect();
+    }
+
+    /**
+     * Sets up the graphical user interface (GUI) for the application.
+     */
+    private void setupGui() {
+        GuiGlobals.initialize(this);
+        BaseStyles.loadStyleResources(STYLES_SCRIPT);
+        GuiGlobals.getInstance().getStyles().setDefaultStyle("pp"); //NON-NLS
+        final BitmapFont normalFont = assetManager.loadFont(FONT); //NON-NLS
+        topText = new BitmapText(normalFont);
+        final int height = context.getSettings().getHeight();
+        topText.setLocalTranslation(10f, height - 10f, 0f);
+        topText.setColor(config.getTopColor());
+        guiNode.attachChild(topText);
+    }
+
+    /**
+     * Configures input mappings and sets up listeners for user interactions.
+     */
+    private void setupInput() {
+        inputManager.deleteMapping(INPUT_MAPPING_EXIT);
+        inputManager.setCursorVisible(false);
+        inputManager.addMapping(ESC, new KeyTrigger(KeyInput.KEY_ESCAPE));
+        inputManager.addMapping(CLICK, new MouseButtonTrigger(MouseInput.BUTTON_LEFT));
+        inputManager.addListener(escapeListener, ESC);
+    }
+
+    /**
+     * Initializes and attaches the necessary application states for the game.
+     */
+    private void setupStates() {
+        if (config.getShowStatistics()) {
+            final BitmapFont normalFont = assetManager.loadFont(FONT); //NON-NLS
+            final StatsAppState stats = new StatsAppState(guiNode, normalFont);
+            stateManager.attach(stats);
+        }
+        flyCam.setEnabled(false);
+        stateManager.detach(stateManager.getState(StatsAppState.class));
+        stateManager.detach(stateManager.getState(DebugKeysAppState.class));
+        attachGameMusic();
+        attachGameSound();
+        stateManager.attachAll(new EditorAppState(), new BattleAppState(), new SeaAppState());
+    }
+
+    /**
+     * Attaches the game sound state and sets its initial enabled state.
+     */
+    private void attachGameMusic() {
+        final GameMusic gameMusic = new GameMusic();
+        gameMusic.setEnabled(GameMusic.enabledInPreferences());
+        stateManager.attach(gameMusic);
+    }
+
+    /**
+     * Attaches the game sound state and sets its initial enabled state.
+     */
+    private void attachGameSound() {
+        final GameSound gameSound = new GameSound();
+        logic.addListener(gameSound);
+        gameSound.setEnabled(GameSound.enabledInPreferences());
+        stateManager.attach(gameSound);
+    }
+
+    /**
+     * Updates the application state every frame.
+     * This method is called once per frame during the game loop.
+     *
+     * @param tpf Time per frame in seconds.
+     */
+    @Override
+    public void simpleUpdate(float tpf) {
+        super.simpleUpdate(tpf);
+        dialogManager.update(tpf);
+        logic.update(tpf);
+    }
+
+    /**
+     * Handles the Escape key action to either close the top dialog or show the main menu.
+     *
+     * @param isPressed Indicates whether the Escape key is pressed.
+     */
+    private void escape(boolean isPressed) {
+        if (!isPressed) return;
+        if (dialogManager.showsDialog())
+            dialogManager.escape();
+        else
+            new Menu(this).open();
+    }
+
+    /**
+     * Returns the {@link Draw} instance used for rendering graphical elements in the game.
+     *
+     * @return The {@link Draw} instance.
+     */
+    public Draw getDraw() {
+        return draw;
+    }
+
+    /**
+     * Handles a request to close the application.
+     * If the request is initiated by pressing ESC, this parameter is true.
+     *
+     * @param esc If true, the request is due to the ESC key being pressed.
+     */
+    @Override
+    public void requestClose(boolean esc) { /* do nothing */ }
+
+    /**
+     * Closes the application, displaying a confirmation dialog if the client is connected to a server.
+     */
+    public void closeApp() {
+        if (serverConnection.isConnected())
+            confirmDialog(lookup("confirm.leaving"), this::close);
+        else
+            close();
+    }
+
+    /**
+     * Closes the application, disconnecting from the server and stopping the application.
+     */
+    private void close() {
+        serverConnection.disconnect();
+        stop();
+    }
+
+    /**
+     * Updates the informational text displayed in the GUI.
+     *
+     * @param text The information text to display.
+     */
+    void setInfoText(String text) {
+        LOGGER.log(Level.DEBUG, "setInfoText {0}", text); //NON-NLS
+        topText.setText(text);
+    }
+
+    /**
+     * Updates the informational text in the GUI based on the key received in an {@link InfoTextEvent}.
+     *
+     * @param event The {@link InfoTextEvent} containing the key for the text to display.
+     */
+    @Override
+    public void receivedEvent(InfoTextEvent event) {
+        LOGGER.log(Level.DEBUG, "received info text {0}", event.key()); //NON-NLS
+        setInfoText(lookup(event.key()));
+    }
+
+    /**
+     * Handles client state events to update the game states accordingly.
+     *
+     * @param event The {@link ClientStateEvent} representing the state change.
+     */
+    @Override
+    public void receivedEvent(ClientStateEvent event) {
+        stateManager.getState(EditorAppState.class).setEnabled(logic.showEditor());
+        stateManager.getState(BattleAppState.class).setEnabled(logic.showBattle());
+        stateManager.getState(SeaAppState.class).setEnabled(logic.showBattle());
+    }
+
+    /**
+     * Returns the executor service used for handling multithreaded tasks.
+     *
+     * @return The {@link ExecutorService} instance.
+     */
+    public ExecutorService getExecutor() {
+        if (executor == null)
+            executor = Executors.newCachedThreadPool();
+        return executor;
+    }
+
+    /**
+     * Stops the application, shutting down the executor service and halting execution.
+     *
+     * @param waitFor If true, waits for the application to stop before returning.
+     */
+    @Override
+    public void stop(boolean waitFor) {
+        if (executor != null) executor.shutdownNow();
+        super.stop(waitFor);
+    }
+
+    /**
+     * Displays a confirmation dialog with a specified question and action for the "Yes" button.
+     *
+     * @param question  The question to display in the dialog.
+     * @param yesAction The action to perform if "Yes" is selected.
+     */
+    void confirmDialog(String question, Runnable yesAction) {
+        DialogBuilder.simple(dialogManager)
+                     .setTitle(lookup("dialog.question"))
+                     .setText(question)
+                     .setOkButton(lookup("button.yes"), yesAction)
+                     .setNoButton(lookup("button.no"))
+                     .build()
+                     .open();
+    }
+
+    /**
+     * Displays an error dialog with the specified error message.
+     *
+     * @param errorMessage The error message to display in the dialog.
+     */
+    void errorDialog(String errorMessage) {
+        DialogBuilder.simple(dialogManager)
+                     .setTitle(lookup("dialog.error"))
+                     .setText(errorMessage)
+                     .setOkButton(lookup("button.ok"))
+                     .build()
+                     .open();
+    }
+
+    public EffectHandler getEffectHandler() {
+        return effectHandler;
+    }
+}

Projekte/battleship/client/src/main/java/pp/battleship/client/BattleshipAppConfig.java

@@ -0,0 +1,196 @@
+////////////////////////////////////////
+// Programming project code
+// UniBw M, 2022, 2023, 2024
+// www.unibw.de/inf2
+// (c) Mark Minas (mark.minas@unibw.de)
+////////////////////////////////////////
+
+package pp.battleship.client;
+
+import com.jme3.math.ColorRGBA;
+import pp.battleship.game.singlemode.BattleshipClientConfig;
+
+/**
+ * Provides access to the Battleship application configuration.
+ * Extends {@link BattleshipClientConfig} to include additional properties specific to the client,
+ * particularly those related to screen settings and visual customization.
+ * <p>
+ * <b>Note:</b> Attributes of this class should not be marked as {@code final}
+ * to ensure proper functionality when reading from a properties file.
+ * </p>
+ */
+public class BattleshipAppConfig extends BattleshipClientConfig {
+
+    /**
+     * Converts a string value found in the properties file into an object of the specified type.
+     * Extends the superclass method to support conversion to {@link ColorRGBA}.
+     *
+     * @param value      the string value to be converted
+     * @param targetType the target type into which the value string is converted
+     * @return the converted object of the specified type
+     */
+    @Override
+    protected Object convertToType(String value, Class<?> targetType) {
+        if (targetType == ColorRGBA.class)
+            return makeColorRGBA(value);
+        return super.convertToType(value, targetType);
+    }
+
+    /**
+     * Converts the specified string value to a corresponding {@link ColorRGBA} object.
+     *
+     * @param value the color in the format "red, green, blue, alpha" with all values in the range [0..1]
+     * @return a {@link ColorRGBA} object representing the color
+     * @throws IllegalArgumentException if the input string is not in the expected format
+     */
+    private static ColorRGBA makeColorRGBA(String value) {
+        String[] split = value.split(",", -1);
+        try {
+            if (split.length == 4)
+                return new ColorRGBA(Float.parseFloat(split[0]),
+                                     Float.parseFloat(split[1]),
+                                     Float.parseFloat(split[2]),
+                                     Float.parseFloat(split[3]));
+        }
+        catch (NumberFormatException e) {
+            // deliberately left empty
+        }
+        throw new IllegalArgumentException(value + " should consist of exactly 4 numbers");
+    }
+
+    /**
+     * The width of the game view resolution in pixels.
+     */
+    @Property("settings.resolution.width") //NON-NLS
+    private int resolutionWidth = 1200;
+
+    /**
+     * The height of the game view resolution in pixels.
+     */
+    @Property("settings.resolution.height") //NON-NLS
+    private int resolutionHeight = 800;
+
+    /**
+     * Specifies whether the game should start in full-screen mode.
+     */
+    @Property("settings.full-screen") //NON-NLS
+    private boolean fullScreen = false;
+
+    /**
+     * Specifies whether gamma correction should be enabled.
+     * If enabled, the main framebuffer is configured for sRGB colors,
+     * and sRGB images are linearized.
+     * <p>
+     * Requires a GPU that supports GL_ARB_framebuffer_sRGB; otherwise, this setting will be ignored.
+     * </p>
+     */
+    @Property("settings.use-gamma-correction") //NON-NLS
+    private boolean useGammaCorrection = true;
+
+    /**
+     * Specifies whether full resolution framebuffers should be used on Retina displays.
+     * This setting is ignored on non-Retina platforms.
+     */
+    @Property("settings.use-retina-framebuffer") //NON-NLS
+    private boolean useRetinaFrameBuffer = false;
+
+    /**
+     * Specifies whether the settings window should be shown for configuring the game.
+     */
+    @Property("settings.show") //NON-NLS
+    private boolean showSettings = false;
+
+    /**
+     * Specifies whether the JME statistics window should be shown in the lower left corner of the screen.
+     */
+    @Property("statistics.show") //NON-NLS
+    private boolean showStatistics = false;
+
+    /**
+     * The color of the top text during gameplay, represented as a {@link ColorRGBA} object.
+     */
+    @Property("overlay.top.color") //NON-NLS
+    private ColorRGBA topColor = ColorRGBA.White;
+
+    /**
+     * Creates a default {@code BattleshipAppConfig} with predefined values.
+     */
+    public BattleshipAppConfig() {
+        // Default constructor
+    }
+
+    /**
+     * Returns the width of the game view resolution in pixels.
+     *
+     * @return the width of the game view resolution in pixels
+     */
+    public int getResolutionWidth() {
+        return resolutionWidth;
+    }
+
+    /**
+     * Returns the height of the game view resolution in pixels.
+     *
+     * @return the height of the game view resolution in pixels
+     */
+    public int getResolutionHeight() {
+        return resolutionHeight;
+    }
+
+    /**
+     * Returns whether the game should start in full-screen mode.
+     *
+     * @return {@code true} if the game should start in full-screen mode; {@code false} otherwise
+     */
+    public boolean fullScreen() {
+        return fullScreen;
+    }
+
+    /**
+     * Returns whether gamma correction is enabled.
+     * If enabled, the main framebuffer is configured for sRGB colors,
+     * and sRGB images are linearized.
+     *
+     * @return {@code true} if gamma correction is enabled; {@code false} otherwise
+     */
+    public boolean useGammaCorrection() {
+        return useGammaCorrection;
+    }
+
+    /**
+     * Returns whether full resolution framebuffers should be used on Retina displays.
+     * This setting is ignored on non-Retina platforms.
+     *
+     * @return {@code true} if full resolution framebuffers should be used on Retina displays; {@code false} otherwise
+     */
+    public boolean useRetinaFrameBuffer() {
+        return useRetinaFrameBuffer;
+    }
+
+    /**
+     * Returns whether the settings window should be shown for configuring the game.
+     *
+     * @return {@code true} if the settings window should be shown; {@code false} otherwise
+     */
+    public boolean getShowSettings() {
+        return showSettings;
+    }
+
+    /**
+     * Returns whether the JME statistics window should be shown in the lower left corner of the screen.
+     *
+     * @return {@code true} if the statistics window should be shown; {@code false} otherwise
+     */
+    public boolean getShowStatistics() {
+        return showStatistics;
+    }
+
+    /**
+     * Returns the color of the top text during gameplay as a {@link ColorRGBA} object.
+     *
+     * @return the color of the top text during gameplay
+     */
+    public ColorRGBA getTopColor() {
+        return topColor;
+    }
+}

Projekte/battleship/client/src/main/java/pp/battleship/client/BattleshipAppState.java

@@ -0,0 +1,102 @@
+////////////////////////////////////////
+// Programming project code
+// UniBw M, 2022, 2023, 2024
+// www.unibw.de/inf2
+// (c) Mark Minas (mark.minas@unibw.de)
+////////////////////////////////////////
+
+package pp.battleship.client;
+
+import com.jme3.app.Application;
+import com.jme3.app.state.AbstractAppState;
+import com.jme3.app.state.AppStateManager;
+import pp.battleship.game.client.ClientGameLogic;
+
+/**
+ * Abstract class representing a state in the Battleship game.
+ * Extends the AbstractAppState from jMonkeyEngine to manage state behavior.
+ */
+public abstract class BattleshipAppState extends AbstractAppState {
+    private BattleshipApp app;
+
+    /**
+     * Creates a new BattleshipAppState that is initially disabled.
+     *
+     * @see #setEnabled(boolean)
+     */
+    protected BattleshipAppState() {
+        setEnabled(false);
+    }
+
+    /**
+     * Initializes the state manager and application.
+     *
+     * @param stateManager The state manager
+     * @param application  The application instance
+     */
+    @Override
+    public void initialize(AppStateManager stateManager, Application application) {
+        super.initialize(stateManager, application);
+        this.app = (BattleshipApp) application;
+        if (isEnabled()) enableState();
+    }
+
+    /**
+     * Returns the BattleshipApp instance associated with this BattleshipAppState.
+     *
+     * @return The BattleshipApp instance.
+     */
+    public BattleshipApp getApp() {
+        return app;
+    }
+
+    /**
+     * Returns the client game logic handler.
+     *
+     * @return the client game logic handler
+     */
+    public ClientGameLogic getGameLogic() {
+        return app.getGameLogic();
+    }
+
+    /**
+     * Checks if any dialog is currently displayed.
+     *
+     * @return true if any dialog is currently shown, false otherwise
+     */
+    public boolean showsDialog() {
+        return app.getDialogManager().showsDialog();
+    }
+
+    /**
+     * Sets the enabled state of the BattleshipAppState.
+     * If the new state is the same as the current state, the method returns.
+     *
+     * @param enabled The new enabled state.
+     */
+    @Override
+    public void setEnabled(boolean enabled) {
+        if (isEnabled() == enabled) return;
+        super.setEnabled(enabled);
+        if (app != null) {
+            if (enabled)
+                enableState();
+            else
+                disableState();
+        }
+    }
+
+    /**
+     * This method is called when the state is enabled.
+     * It is meant to be overridden by subclasses to perform
+     * specific actions when the state is enabled.
+     */
+    protected abstract void enableState();
+
+    /**
+     * This method is called when the state is disabled.
+     * It is meant to be overridden by subclasses to perform
+     * specific actions when the state is disabled.
+     */
+    protected abstract void disableState();
+}

Projekte/battleship/client/src/main/java/pp/battleship/client/EffectHandler.java

@@ -0,0 +1,197 @@
+package pp.battleship.client;
+
+import com.jme3.effect.ParticleEmitter;
+import com.jme3.effect.ParticleMesh;
+import com.jme3.material.Material;
+import com.jme3.math.ColorRGBA;
+import com.jme3.math.Vector3f;
+import com.jme3.scene.Geometry;
+import com.jme3.scene.Node;
+import pp.battleship.model.Battleship;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Timer;
+import java.util.TimerTask;
+
+/**
+ * EffectHandler manages the creation and manipulation of particle effects in the Battleship application.
+ */
+public class EffectHandler {
+    private final BattleshipApp app;
+    private final Map<Battleship, List<ParticleEmitter>> effects;
+
+    /**
+     * Constructs an EffectHandler with the specified BattleshipApp instance.
+     *
+     * @param app the BattleshipApp instance
+     */
+    public EffectHandler(BattleshipApp app) {
+        this.app = app;
+        effects = new HashMap<>();
+    }
+
+    /**
+     * Creates a fire effect at the specified position for the given Battleship.
+     *
+     * @param point the position where the fire effect will be created
+     * @param ship  the Battleship associated with the fire effect
+     * @return a Node containing the fire effect
+     */
+    public Node createFire(Vector3f point, Battleship ship) {
+        Node parent = new Node();
+        parent.setLocalTranslation(point);
+
+        ParticleEmitter fire = initializeParticleEmitter(
+                "Effects/Explosion/flame.png",
+                2,2,
+                new ColorRGBA(1f, 0f, 0f, 1f),
+                new ColorRGBA(1f, 1f, 0f, 0.5f),
+                new Vector3f(0, 1.5f, 0),
+                50,
+                .4f,
+                0.05f,
+                1f,
+                2f,
+                0.2f,
+                new Vector3f(0, 0, 0)
+        );
+
+        ParticleEmitter smoke = initializeParticleEmitter(
+                "Effects/Smoke/Smoke.png",
+                15,
+                1,
+                new ColorRGBA(1f, 1f, 1f, 0f),
+                new ColorRGBA(0.5f, 0.5f, 0.5f, 0.5f),
+                new Vector3f(0, 1f, 0),
+                600,
+                .2f,
+                0.1f,
+                1f,
+                5f,
+                0.25f,
+                new Vector3f(0, 0, 0)
+        );
+
+        parent.attachChild(fire);
+        parent.attachChild(smoke);
+
+        List<ParticleEmitter> oldEffects = new ArrayList<>(effects.getOrDefault(ship, new ArrayList<>()));
+        oldEffects.add(fire);
+        oldEffects.add(smoke);
+        effects.put(ship, oldEffects);
+
+        return parent;
+    }
+
+    /**
+     * Creates a water splash effect at the specified position.
+     *
+     * @param pos the position where the water splash effect will be created
+     * @return a Geometry representing the water splash effect
+     */
+    public Geometry waterSplash(Vector3f pos) {
+        ParticleEmitter water = initializeParticleEmitter(
+                "Effects/Explosion/flash.png",
+                2,2,
+                new ColorRGBA(0.3f, 0.8f, 1f, 0f),
+                new ColorRGBA(0f, 0f, 1f, 1f),
+                new Vector3f(0, 3, 0),
+                100,
+                .6f,
+                0.05f,
+                1f,
+                1.5f,
+                0.3f,
+                new Vector3f(0, 4f, 0)
+        );
+
+        water.setLocalTranslation(pos);
+        water.emitAllParticles();
+        water.setParticlesPerSec(0);
+
+        new Timer().schedule(new TimerTask() {
+            @Override
+            public void run() {
+                deleteSplash(water);
+            }
+        }, 2000);
+
+        return water;
+    }
+
+    /**
+     * Creates a debris splash effect at the specified position.
+     *
+     * @param pos the position where the debris splash effect will be created
+     * @return a Geometry representing the debris splash effect
+     */
+    public Geometry debrisSplash(Vector3f pos) {
+        ParticleEmitter debris = initializeParticleEmitter(
+                "Effects/Explosion/Debris.png",
+                3,3,
+                new ColorRGBA(0.1f, 0.1f, 0.1f, 0f),
+                new ColorRGBA(0.5f, 0.5f, 0.5f, .8f),
+                new Vector3f(0, 2f, 0),
+                50,
+                0.1f,
+                0.5f,
+                1f,
+                1.5f,
+                0.5f,
+                new Vector3f(0, 0, 0)
+        );
+        debris.setLocalTranslation(pos);
+
+        debris.emitAllParticles();
+        debris.setParticlesPerSec(0);
+
+        return debris;
+    }
+
+    /**
+     * Deletes the specified splash effect from the scene.
+     *
+     * @param splash the Geometry representing the splash effect to be deleted
+     */
+    private void deleteSplash(Geometry splash) {
+        splash.getParent().detachChild(splash);
+    }
+
+    /**
+     * Stops all particle effects associated with the specified Battleship.
+     *
+     * @param ship the Battleship whose effects are to be destroyed
+     */
+    public void destroyShip(Battleship ship) {
+        for (ParticleEmitter emitter : effects.get(ship)) {
+            emitter.setParticlesPerSec(0);
+        }
+    }
+
+    private ParticleEmitter initializeParticleEmitter(
+            String texturePath, int imagesX, int imagesY, ColorRGBA endColor, ColorRGBA startColor, Vector3f initialVelocity,
+            int particleCount, float startSize, float endSize, float lowLife, float highLife,
+            float velocityVariation, Vector3f gravity
+    ) {
+        ParticleEmitter emitter = new ParticleEmitter("Emitter", ParticleMesh.Type.Triangle, particleCount);
+        Material mat = new Material(app.getAssetManager(), "Common/MatDefs/Misc/Particle.j3md");
+        mat.setTexture("Texture", app.getAssetManager().loadTexture(texturePath));
+        emitter.setMaterial(mat);
+        emitter.setImagesX(imagesX);
+        emitter.setImagesY(imagesY);
+        emitter.setEndColor(endColor);
+        emitter.setStartColor(startColor);
+        emitter.getParticleInfluencer().setInitialVelocity(initialVelocity);
+        emitter.setStartSize(startSize);
+        emitter.setEndSize(endSize);
+        emitter.setLowLife(lowLife);
+        emitter.setHighLife(highLife);
+        emitter.getParticleInfluencer().setVelocityVariation(velocityVariation);
+        emitter.setGravity(gravity);
+
+        return emitter;
+    }
+}

Projekte/battleship/client/src/main/java/pp/battleship/client/GameMusic.java

@@ -0,0 +1,114 @@
+package pp.battleship.client;
+
+import com.jme3.app.Application;
+import com.jme3.app.state.AbstractAppState;
+import com.jme3.app.state.AppStateManager;
+import com.jme3.audio.AudioNode;
+
+import java.util.prefs.Preferences;
+
+import static pp.JmeUtil.loadSound;
+import static pp.util.PreferencesUtils.getPreferences;
+
+/**
+ * An application state that plays sounds.
+ */
+public class GameMusic extends AbstractAppState {
+    private static final Preferences PREFERENCES = getPreferences(GameMusic.class);
+    private static final String ENABLED_PREF = "enabled";
+    private static final String VOLUME_PREF = "volume";
+
+    private static final String MUSIC_PATH = "Sound/background.wav";
+
+    private AudioNode backgroundMusic;
+    private float volume;
+
+    /**
+     * Returns whether the music is enabled in the user preferences.
+     *
+     * @return true if music is enabled, false otherwise
+     */
+    public static boolean enabledInPreferences() {
+        return PREFERENCES.getBoolean(ENABLED_PREF, true);
+    }
+
+    /**
+     * Returns the music volume level stored in the user preferences.
+     *
+     * @return the volume level as a float (default is 0.5f)
+     */
+    public static float volumeInPreferences() {
+        return PREFERENCES.getFloat(VOLUME_PREF, 0.5f);
+    }
+
+    /**
+     * Initializes the game music system
+     *
+     * @param stateManager the state manager of the game
+     * @param app          the main application
+     */
+    @Override
+    public void initialize(AppStateManager stateManager, Application app) {
+        super.initialize(stateManager, app);
+        backgroundMusic = loadSound(app, MUSIC_PATH);
+        setMusicVolume(volumeInPreferences());
+        if (isEnabled()) playMusic();
+    }
+
+    /**
+     * Sets the enabled state of this AppState.
+     * Overrides {@link com.jme3.app.state.AbstractAppState#setEnabled(boolean)}
+     *
+     * @param enabled {@code true} to enable the AppState, {@code false} to disable it.
+     */
+    @Override
+    public void setEnabled(boolean enabled) {
+        if (enabled && !isEnabled()) {
+            playMusic();
+        }
+        else if (!enabled && isEnabled()) {
+            stopMusic();
+        }
+        super.setEnabled(enabled);
+        PREFERENCES.putBoolean(ENABLED_PREF, enabled);
+    }
+
+    /**
+     * Plays the background music.
+     */
+    public void playMusic() {
+        if (backgroundMusic != null) {
+            backgroundMusic.play();
+        }
+    }
+
+    /**
+     * Stops background music.
+     */
+    public void stopMusic() {
+        if (backgroundMusic != null) {
+            backgroundMusic.stop();
+        }
+    }
+
+    /**
+     * Sets the volume of the background music and saves the volume setting in user preferences.
+     *
+     * @param volume the volume level to set (0.0f to 1.0f)
+     */
+    public void setMusicVolume(float volume) {
+        if (backgroundMusic != null) {
+            backgroundMusic.setVolume(volume);
+            this.volume = volume;
+            PREFERENCES.putFloat(VOLUME_PREF, volume);
+        }
+    }
+
+    /**
+     * Returns volume stored in class
+     * @return volume
+     */
+    public float getVolume() {
+        return this.volume;
+    }
+}

Projekte/battleship/client/src/main/java/pp/battleship/client/GameSound.java

@@ -0,0 +1,125 @@
+////////////////////////////////////////
+// Programming project code
+// UniBw M, 2022, 2023, 2024
+// www.unibw.de/inf2
+// (c) Mark Minas (mark.minas@unibw.de)
+////////////////////////////////////////
+
+package pp.battleship.client;
+
+import com.jme3.app.Application;
+import com.jme3.app.state.AbstractAppState;
+import com.jme3.app.state.AppStateManager;
+import com.jme3.audio.AudioNode;
+import pp.battleship.notification.GameEventListener;
+import pp.battleship.notification.SoundEvent;
+
+import java.lang.System.Logger;
+import java.lang.System.Logger.Level;
+import java.util.prefs.Preferences;
+
+import static pp.JmeUtil.loadSound;
+import static pp.util.PreferencesUtils.getPreferences;
+
+/**
+ * An application state that plays sounds.
+ */
+public class GameSound extends AbstractAppState implements GameEventListener {
+    private static final Logger LOGGER = System.getLogger(GameSound.class.getName());
+    private static final Preferences PREFERENCES = getPreferences(GameSound.class);
+    private static final String ENABLED_PREF = "enabled"; //NON-NLS
+
+    private AudioNode splashSound;
+    private AudioNode shipDestroyedSound;
+    private AudioNode explosionSound;
+    private AudioNode shellFlyingSound;
+
+    /**
+     * Checks if sound is enabled in the preferences.
+     *
+     * @return {@code true} if sound is enabled, {@code false} otherwise.
+     */
+    public static boolean enabledInPreferences() {
+        return PREFERENCES.getBoolean(ENABLED_PREF, true);
+    }
+
+    /**
+     * Toggles the game sound on or off.
+     */
+    public void toggleSound() {
+        setEnabled(!isEnabled());
+    }
+
+    /**
+     * Sets the enabled state of this AppState.
+     * Overrides {@link com.jme3.app.state.AbstractAppState#setEnabled(boolean)}
+     *
+     * @param enabled {@code true} to enable the AppState, {@code false} to disable it.
+     */
+    @Override
+    public void setEnabled(boolean enabled) {
+        if (isEnabled() == enabled) return;
+        super.setEnabled(enabled);
+        LOGGER.log(Level.INFO, "Sound enabled: {0}", enabled); //NON-NLS
+        PREFERENCES.putBoolean(ENABLED_PREF, enabled);
+    }
+
+    /**
+     * Initializes the sound effects for the game.
+     * Overrides {@link AbstractAppState#initialize(AppStateManager, Application)}
+     *
+     * @param stateManager The state manager
+     * @param app          The application
+     */
+    @Override
+    public void initialize(AppStateManager stateManager, Application app) {
+        super.initialize(stateManager, app);
+        shipDestroyedSound = loadSound(app, "Sound/Effects/sunken.wav"); //NON-NLS
+        splashSound = loadSound(app, "Sound/Effects/splash.wav"); //NON-NLS
+        explosionSound = loadSound(app, "Sound/Effects/explosion.wav"); //NON-NLS
+        shellFlyingSound = loadSound(app, "Sound/Effects/shell_flying.wav");
+    }
+
+    /**
+     * Plays the shell flying sound effect.
+     */
+    public void shellFly() {
+        if (isEnabled() && shellFlyingSound != null) {
+            shellFlyingSound.playInstance();
+        }
+    }
+
+    /**
+     * Plays the splash sound effect.
+     */
+    public void splash() {
+        if (isEnabled() && splashSound != null)
+            splashSound.playInstance();
+    }
+
+    /**
+     * Plays the explosion sound effect.
+     */
+    public void explosion() {
+        if (isEnabled() && explosionSound != null)
+            explosionSound.playInstance();
+    }
+
+    /**
+     * Plays sound effect when a ship has been destroyed.
+     */
+    public void shipDestroyed() {
+        if (isEnabled() && shipDestroyedSound != null)
+            shipDestroyedSound.playInstance();
+    }
+
+    @Override
+    public void receivedEvent(SoundEvent event) {
+        switch (event.sound()) {
+            case EXPLOSION -> explosion();
+            case SPLASH -> splash();
+            case DESTROYED_SHIP -> shipDestroyed();
+            case SHELL_FLYING -> shellFly();
+        }
+    }
+}

Projekte/battleship/client/src/main/java/pp/battleship/client/Menu.java

@@ -0,0 +1,154 @@
+////////////////////////////////////////
+// Programming project code
+// UniBw M, 2022, 2023, 2024
+// www.unibw.de/inf2
+// (c) Mark Minas (mark.minas@unibw.de)
+////////////////////////////////////////
+
+package pp.battleship.client;
+
+import com.simsilica.lemur.Button;
+import com.simsilica.lemur.Checkbox;
+import com.simsilica.lemur.Label;
+import com.simsilica.lemur.style.ElementId;
+import pp.dialog.Dialog;
+import pp.dialog.StateCheckboxModel;
+import pp.dialog.TextInputDialog;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.prefs.Preferences;
+
+import static pp.battleship.Resources.lookup;
+import static pp.util.PreferencesUtils.getPreferences;
+
+/**
+ * The Menu class represents the main menu in the Battleship game application.
+ * It extends the Dialog class and provides functionalities for loading, saving,
+ * returning to the game, and quitting the application.
+ */
+class Menu extends Dialog {
+    private static final Preferences PREFERENCES = getPreferences(Menu.class);
+    private static final String LAST_PATH = "last.file.path";
+    private final BattleshipApp app;
+    private final Button loadButton = new Button(lookup("menu.map.load"));
+    private final Button saveButton = new Button(lookup("menu.map.save"));
+    private final VolumeSlider volumeSlider;
+
+    /**
+     * Constructs the Menu dialog for the Battleship application.
+     *
+     * @param app the BattleshipApp instance
+     */
+    public Menu(BattleshipApp app) {
+        super(app.getDialogManager());
+        this.app = app;
+        volumeSlider = new VolumeSlider(app.getStateManager().getState(GameMusic.class));
+
+        addChild(new Label(lookup("battleship.name"), new ElementId("header"))); //NON-NLS
+        addChild(new Checkbox(lookup("menu.sound-enabled"),
+                              new StateCheckboxModel(app, GameSound.class)));
+        addChild(new Checkbox(lookup("menu.music-enabled"), new StateCheckboxModel(app, GameMusic.class)));
+        addChild(volumeSlider);
+
+        addChild(loadButton)
+                .addClickCommands(s -> ifTopDialog(this::loadDialog));
+        addChild(saveButton)
+                .addClickCommands(s -> ifTopDialog(this::saveDialog));
+        addChild(new Button(lookup("menu.return-to-game")))
+                .addClickCommands(s -> ifTopDialog(this::close));
+        addChild(new Button(lookup("menu.quit")))
+                .addClickCommands(s -> ifTopDialog(app::closeApp));
+        update();
+    }
+
+    /**
+     * Updates the state of the load and save buttons based on the game logic.
+     */
+    @Override
+    public void update() {
+        loadButton.setEnabled(app.getGameLogic().mayLoadMap());
+        saveButton.setEnabled(app.getGameLogic().maySaveMap());
+    }
+
+    @Override
+    public void update(float delta) {
+        volumeSlider.update();
+    }
+
+    /**
+     * As an escape action, this method closes the menu if it is the top dialog.
+     */
+    @Override
+    public void escape() {
+        close();
+    }
+
+    /**
+     * Functional interface for file actions.
+     */
+    @FunctionalInterface
+    private interface FileAction {
+        /**
+         * Executes a file action.
+         *
+         * @param file the file to be processed
+         * @throws IOException if an I/O error occurs
+         */
+        void run(File file) throws IOException;
+    }
+
+    /**
+     * Handles the file action for the provided dialog.
+     *
+     * @param fileAction the file action to be executed
+     * @param dialog     the dialog providing the file input
+     */
+    private void handle(FileAction fileAction, TextInputDialog dialog) {
+        try {
+            final String path = dialog.getInput().getText();
+            PREFERENCES.put(LAST_PATH, path);
+            fileAction.run(new File(path));
+            dialog.close();
+        }
+        catch (IOException e) {
+            app.errorDialog(e.getLocalizedMessage());
+        }
+    }
+
+    /**
+     * Shows a file dialog for loading or saving files.
+     *
+     * @param fileAction the action to perform with the selected file
+     * @param label      the label for the dialog
+     */
+    private void fileDialog(FileAction fileAction, String label) {
+        final TextInputDialog dialog =
+                TextInputDialog.builder(app.getDialogManager())
+                               .setLabel(lookup("label.file"))
+                               .setFocus(TextInputDialog::getInput)
+                               .setTitle(label)
+                               .setOkButton(lookup("button.ok"), d -> handle(fileAction, d))
+                               .setNoButton(lookup("button.cancel"))
+                               .setOkClose(false)
+                               .build();
+        final String path = PREFERENCES.get(LAST_PATH, null);
+        if (path != null)
+            dialog.getInput().setText(path.trim());
+        dialog.open();
+    }
+
+    /**
+     * Shows the load dialog for loading maps.
+     */
+    private void loadDialog() {
+        fileDialog(app.getGameLogic()::loadMap, lookup("menu.map.load"));
+    }
+
+    /**
+     * Shows the save dialog for saving maps.
+     */
+    private void saveDialog() {
+        fileDialog(app.getGameLogic()::saveMap, lookup("menu.map.save"));
+    }
+}

Projekte/battleship/client/src/main/java/pp/battleship/client/NetworkDialog.java

@@ -0,0 +1,200 @@
+////////////////////////////////////////
+// Programming project code
+// UniBw M, 2022, 2023, 2024
+// www.unibw.de/inf2
+// (c) Mark Minas (mark.minas@unibw.de)
+////////////////////////////////////////
+
+package pp.battleship.client;
+
+import com.simsilica.lemur.Checkbox;
+import com.simsilica.lemur.Container;
+import com.simsilica.lemur.Label;
+import com.simsilica.lemur.TextField;
+import com.simsilica.lemur.component.SpringGridLayout;
+import pp.battleship.client.clienthost.BattleshipServerClient;
+import pp.dialog.Dialog;
+import pp.dialog.DialogBuilder;
+import pp.dialog.SimpleDialog;
+
+import java.lang.System.Logger;
+import java.lang.System.Logger.Level;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.Future;
+
+import static pp.battleship.Resources.lookup;
+
+/**
+ * Represents a dialog for setting up a network connection in the Battleship game.
+ * Allows users to specify the host and port for connecting to a game server.
+ */
+class NetworkDialog extends SimpleDialog {
+    private static final Logger LOGGER = System.getLogger(NetworkDialog.class.getName());
+    private static final String LOCALHOST = "localhost"; //NON-NLS
+    private static final String DEFAULT_PORT = "1234"; //NON-NLS
+    private final NetworkSupport network;
+    private final TextField host = new TextField(LOCALHOST);
+    private final TextField port = new TextField(DEFAULT_PORT);
+    private String hostname;
+    private int portNumber;
+    private Future<Object> connectionFuture;
+    private Future<Object> serverFuture;
+    private Dialog progressDialog;
+    private BattleshipServerClient server;
+    private final Checkbox clientHostCheckbox;
+
+    /**
+     * Constructs a new NetworkDialog.
+     *
+     * @param network The NetworkSupport instance to be used for network operations.
+     */
+    NetworkDialog(NetworkSupport network) {
+        super(network.getApp().getDialogManager());
+        this.network = network;
+        host.setSingleLine(true);
+        host.setPreferredWidth(400f);
+        port.setSingleLine(true);
+
+        final BattleshipApp app = network.getApp();
+        final Container input = new Container(new SpringGridLayout());
+        input.addChild(new Label(lookup("host.name") + ":  "));
+        input.addChild(host, 1);
+        input.addChild(new Label(lookup("port.number") + ":  "));
+        input.addChild(port, 1);
+        clientHostCheckbox = new Checkbox("Host Server");
+        input.addChild(clientHostCheckbox);
+        DialogBuilder.simple(app.getDialogManager())
+                     .setTitle(lookup("server.dialog"))
+                     .setExtension(d -> d.addChild(input))
+                     .setOkButton(lookup("button.connect"), d -> connect())
+                     .setNoButton(lookup("button.cancel"), app::closeApp)
+                     .setOkClose(false)
+                     .setNoClose(false)
+                     .build(this);
+    }
+
+    /**
+     * Handles the action for the connect button in the connection dialog.
+     * Tries to parse the port number and initiate connection to the server.
+     */
+    private void connect() {
+        LOGGER.log(Level.INFO, "connect to host={0}, port={1}", host, port); //NON-NLS
+        try {
+            hostname = host.getText().trim().isEmpty() ? LOCALHOST : host.getText();
+            portNumber = Integer.parseInt(port.getText());
+            openProgressDialog();
+
+            if (clientHostCheckbox.isChecked()) {
+                serverFuture = network.getApp().getExecutor().submit(this::initServer);
+
+                while (server == null || !server.isReady()) {
+                    Thread.sleep(100);
+                }
+            }
+            connectionFuture = network.getApp().getExecutor().submit(this::initNetwork);
+        }
+        catch (NumberFormatException e) {
+            network.getApp().errorDialog(lookup("port.must.be.integer"));
+        }
+        catch (InterruptedException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    /**
+     * Creates a dialog indicating that the connection is in progress.
+     */
+    private void openProgressDialog() {
+        progressDialog = DialogBuilder.simple(network.getApp().getDialogManager())
+                                      .setText(lookup("label.connecting"))
+                                      .build();
+        progressDialog.open();
+    }
+
+    /**
+     * Tries to initialize the network connection.
+     *
+     * @throws RuntimeException If an error occurs when creating the client.
+     */
+    private Object initNetwork() {
+        try {
+            network.initNetwork(hostname, portNumber);
+            return null;
+        }
+        catch (Exception e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    /**
+     * Tries to initialize the server hosted by the client.
+     *
+     * @throws RuntimeException If an error occurs when starting the server.
+     */
+    private Object initServer() {
+        try {
+            server = new BattleshipServerClient();
+            server.run(Integer.parseInt(port.getText()));
+            return null;
+        }
+        catch (Exception e) {
+            LOGGER.log(Level.ERROR, "Error while starting server", e);
+            throw new RuntimeException(e);
+        }
+    }
+
+    /**
+     * This method is called by {@linkplain pp.dialog.DialogManager#update(float)} for periodically
+     * updating this dialog. T
+     */
+    @Override
+    public void update(float delta) {
+        if (connectionFuture != null && connectionFuture.isDone())
+            try {
+                connectionFuture.get();
+                success();
+            }
+            catch (ExecutionException e) {
+                failure(e.getCause());
+            }
+            catch (InterruptedException e) {
+                LOGGER.log(Level.WARNING, "Interrupted!", e); //NON-NLS
+                Thread.currentThread().interrupt();
+            }
+
+        if (serverFuture != null && serverFuture.isDone()) {
+            try {
+                serverFuture.get();
+            }
+            catch (ExecutionException e) {
+                LOGGER.log(Level.ERROR, "Failed to start server", e.getCause());
+            }
+            catch (InterruptedException e) {
+                LOGGER.log(Level.WARNING, "Server thread was interrupted", e);
+                Thread.currentThread().interrupt();
+            }
+        }
+    }
+
+    /**
+     * Handles a successful connection to the game server.
+     */
+    private void success() {
+        connectionFuture = null;
+        progressDialog.close();
+        this.close();
+        network.getApp().setInfoText(lookup("wait.for.an.opponent"));
+    }
+
+    /**
+     * Handles a failed connection attempt.
+     *
+     * @param e The cause of the failure.
+     */
+    private void failure(Throwable e) {
+        connectionFuture = null;
+        progressDialog.close();
+        network.getApp().errorDialog(lookup("server.connection.failed"));
+        network.getApp().setInfoText(e.getLocalizedMessage());
+    }
+}

Projekte/battleship/client/src/main/java/pp/battleship/client/NetworkSupport.java

@@ -0,0 +1,152 @@
+////////////////////////////////////////
+// Programming project code
+// UniBw M, 2022, 2023, 2024
+// www.unibw.de/inf2
+// (c) Mark Minas (mark.minas@unibw.de)
+////////////////////////////////////////
+
+package pp.battleship.client;
+
+import com.jme3.network.Client;
+import com.jme3.network.ClientStateListener;
+import com.jme3.network.Message;
+import com.jme3.network.MessageListener;
+import com.jme3.network.Network;
+import pp.battleship.game.client.ServerConnection;
+import pp.battleship.message.client.ClientMessage;
+import pp.battleship.message.server.ServerMessage;
+
+import java.io.IOException;
+import java.lang.System.Logger;
+import java.lang.System.Logger.Level;
+
+import static pp.battleship.Resources.lookup;
+
+/**
+ * Manages the network connection for the Battleship application.
+ * Handles connecting to and disconnecting from the server, and sending messages.
+ */
+class NetworkSupport implements MessageListener<Client>, ClientStateListener, ServerConnection {
+    private static final Logger LOGGER = System.getLogger(NetworkSupport.class.getName());
+    private final BattleshipApp app;
+    private Client client;
+
+    /**
+     * Constructs a NetworkSupport instance for the given Battleship application.
+     *
+     * @param app The Battleship application instance.
+     */
+    public NetworkSupport(BattleshipApp app) {
+        this.app = app;
+    }
+
+    /**
+     * Returns the Battleship application instance.
+     *
+     * @return Battleship application instance
+     */
+    BattleshipApp getApp() {
+        return app;
+    }
+
+    /**
+     * Checks if there is a connection to the game server.
+     *
+     * @return true if there is a connection to the game server, false otherwise.
+     */
+    @Override
+    public boolean isConnected() {
+        return client != null && client.isConnected();
+    }
+
+    /**
+     * Attempts to join the game if there is no connection yet.
+     * Opens a dialog for the user to enter the host and port information.
+     */
+    @Override
+    public void connect() {
+        if (client == null)
+            new NetworkDialog(this).open();
+    }
+
+    /**
+     * Closes the client connection.
+     */
+    @Override
+    public void disconnect() {
+        if (client == null) return;
+        client.close();
+        client = null;
+        LOGGER.log(Level.INFO, "client closed"); //NON-NLS
+    }
+
+    /**
+     * Initializes the network connection.
+     *
+     * @param host The server's address.
+     * @param port The server's port.
+     * @throws IOException If an I/O error occurs when creating the client.
+     */
+    void initNetwork(String host, int port) throws IOException {
+        if (client != null)
+            throw new IllegalStateException("trying to join a game again");
+        client = Network.connectToServer(host, port);
+        client.start();
+        client.addMessageListener(this);
+        client.addClientStateListener(this);
+    }
+
+    /**
+     * Called when a message is received from the server.
+     *
+     * @param client  The client instance that received the message.
+     * @param message The message received from the server.
+     */
+    @Override
+    public void messageReceived(Client client, Message message) {
+        LOGGER.log(Level.INFO, "message received from server: {0}", message); //NON-NLS
+        if (message instanceof ServerMessage serverMessage)
+            app.enqueue(() -> serverMessage.accept(app.getGameLogic()));
+    }
+
+    /**
+     * Called when the client has successfully connected to the server.
+     *
+     * @param client The client that connected to the server.
+     */
+    @Override
+    public void clientConnected(Client client) {
+        LOGGER.log(Level.INFO, "Client connected: {0}", client); //NON-NLS
+    }
+
+    /**
+     * Called when the client is disconnected from the server.
+     *
+     * @param client         The client that was disconnected.
+     * @param disconnectInfo Information about the disconnection.
+     */
+    @Override
+    public void clientDisconnected(Client client, DisconnectInfo disconnectInfo) {
+        LOGGER.log(Level.INFO, "Client {0} disconnected: {1}", client, disconnectInfo); //NON-NLS
+        if (this.client != client)
+            throw new IllegalArgumentException("parameter value must be client");
+        LOGGER.log(Level.INFO, "client still connected: {0}", client.isConnected()); //NON-NLS
+        this.client = null;
+        disconnect();
+        app.enqueue(() -> app.setInfoText(lookup("lost.connection.to.server")));
+    }
+
+    /**
+     * Sends the specified message to the server.
+     *
+     * @param message The message to be sent to the server.
+     */
+    @Override
+    public void send(ClientMessage message) {
+        LOGGER.log(Level.INFO, "sending {0}", message); //NON-NLS
+        if (client == null)
+            app.errorDialog(lookup("lost.connection.to.server"));
+        else
+            client.send(message);
+    }
+}

Projekte/battleship/client/src/main/java/pp/battleship/client/VolumeSlider.java

@@ -0,0 +1,38 @@
+package pp.battleship.client;
+
+import com.simsilica.lemur.Slider;
+
+/**
+ * Represents a volume slider for controlling the background music volume in the Battleship game.
+ * This class extends the {@link Slider} class and interfaces with the {@link GameMusic} instance
+ * to adjust the volume settings based on user input.
+ */
+public class VolumeSlider extends Slider {
+    private final GameMusic gameMusic;
+    private float volume;
+
+    /**
+     * Constructs a new VolumeSlider instance and initializes it with the current volume level
+     * from the game music preferences.
+     *
+     * @param gameMusic the instance of {@link GameMusic} to control music volume
+     */
+    public VolumeSlider(GameMusic gameMusic) {
+        super();
+        this.gameMusic = gameMusic;
+        volume = gameMusic.getVolume();
+        getModel().setPercent(volume);
+    }
+
+    /**
+     * Updates the volume setting based on the current slider position.
+     * If the slider's percent value has changed, it updates the music volume
+     * in the associated {@link GameMusic} instance.
+     */
+    public void update() {
+        if (getModel().getPercent() != volume) {
+            this.volume = (float) getModel().getPercent();
+            gameMusic.setMusicVolume(volume);
+        }
+    }
+}

Projekte/battleship/client/src/main/java/pp/battleship/client/clienthost/BattleshipServerClient.java

@@ -0,0 +1,205 @@
+////////////////////////////////////////
+// Programming project code
+// UniBw M, 2022, 2023, 2024
+// www.unibw.de/inf2
+// (c) Mark Minas (mark.minas@unibw.de)
+////////////////////////////////////////
+
+package pp.battleship.client.clienthost;
+
+import com.jme3.network.ConnectionListener;
+import com.jme3.network.HostedConnection;
+import com.jme3.network.Message;
+import com.jme3.network.MessageListener;
+import com.jme3.network.Network;
+import com.jme3.network.Server;
+import com.jme3.network.serializing.Serializer;
+import pp.battleship.BattleshipConfig;
+import pp.battleship.game.server.Player;
+import pp.battleship.game.server.ServerGameLogic;
+import pp.battleship.game.server.ServerSender;
+import pp.battleship.message.client.AnimationFinishedMessage;
+import pp.battleship.message.client.ClientMessage;
+import pp.battleship.message.client.MapMessage;
+import pp.battleship.message.client.ShootMessage;
+import pp.battleship.message.server.EffectMessage;
+import pp.battleship.message.server.GameDetails;
+import pp.battleship.message.server.ServerMessage;
+import pp.battleship.message.server.StartBattleMessage;
+import pp.battleship.model.Battleship;
+import pp.battleship.model.IntPoint;
+import pp.battleship.model.Shot;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.lang.System.Logger;
+import java.lang.System.Logger.Level;
+import java.util.concurrent.BlockingQueue;
+import java.util.concurrent.LinkedBlockingQueue;
+import java.util.logging.LogManager;
+
+/**
+ * Server implementing the visitor pattern as MessageReceiver for ClientMessages
+ */
+public class BattleshipServerClient implements MessageListener<HostedConnection>, ConnectionListener, ServerSender {
+    private static final Logger LOGGER = System.getLogger(BattleshipServerClient.class.getName());
+    private static final File CONFIG_FILE = new File("server.properties");
+
+    private final BattleshipConfig config = new BattleshipConfig();
+    private Server myServer;
+    private final ServerGameLogic logic;
+    private final BlockingQueue<ReceivedMessageClient> pendingMessages = new LinkedBlockingQueue<>();
+
+    static {
+        // Configure logging
+        LogManager manager = LogManager.getLogManager();
+        try {
+            manager.readConfiguration(new FileInputStream("logging.properties"));
+            LOGGER.log(Level.INFO, "Successfully read logging properties"); //NON-NLS
+        }
+        catch (IOException e) {
+            LOGGER.log(Level.INFO, e.getMessage());
+        }
+    }
+
+    /**
+     * Creates the server and reads the configuration from the specified file.
+     * Initializes the game logic and sets up logging.
+     */
+    public BattleshipServerClient() {
+        config.readFromIfExists(CONFIG_FILE);
+        LOGGER.log(Level.INFO, "Configuration: {0}", config); //NON-NLS
+        logic = new ServerGameLogic(this, config);
+    }
+
+    /**
+     * Checks if the server is ready.
+     *
+     * @return true if the server is running, false otherwise
+     */
+    public boolean isReady() {
+        return myServer != null && myServer.isRunning();
+    }
+
+    /**
+     * Starts the server and continuously processes incoming messages.
+     */
+    public void run(int port) {
+        startServer(port);
+        while (true)
+            processNextMessage();
+    }
+
+    /**
+     * Starts the server by creating a network server on the specified port.
+     */
+    private void startServer(int port) {
+        try {
+            LOGGER.log(Level.INFO, "Starting server..."); //NON-NLS
+            myServer = Network.createServer(port);
+            initializeSerializables();
+            myServer.start();
+            registerListeners();
+            LOGGER.log(Level.INFO, "Server started: {0}", myServer.isRunning()); //NON-NLS
+        }
+        catch (IOException e) {
+            LOGGER.log(Level.ERROR, "Couldn't start server: {0}", e.getMessage()); //NON-NLS
+            exit(1);
+        }
+    }
+
+    /**
+     * Processes the next message in the queue.
+     */
+    private void processNextMessage() {
+        try {
+            pendingMessages.take().process(logic);
+        }
+        catch (InterruptedException ex) {
+            LOGGER.log(Level.INFO, "Interrupted while waiting for messages"); //NON-NLS
+            Thread.currentThread().interrupt();
+        }
+    }
+
+    /**
+     * Registers all serializable message classes for network transmission.
+     */
+    private void initializeSerializables() {
+        Serializer.registerClass(GameDetails.class);
+        Serializer.registerClass(StartBattleMessage.class);
+        Serializer.registerClass(MapMessage.class);
+        Serializer.registerClass(ShootMessage.class);
+        Serializer.registerClass(EffectMessage.class);
+        Serializer.registerClass(AnimationFinishedMessage.class);
+        Serializer.registerClass(Battleship.class);
+        Serializer.registerClass(IntPoint.class);
+        Serializer.registerClass(Shot.class);
+    }
+
+    /**
+     * Registers the message and connection listeners for the server.
+     */
+    private void registerListeners() {
+        myServer.addMessageListener(this, MapMessage.class);
+        myServer.addMessageListener(this, ShootMessage.class);
+        myServer.addMessageListener(this, AnimationFinishedMessage.class);
+        myServer.addConnectionListener(this);
+    }
+
+    @Override
+    public void messageReceived(HostedConnection source, Message message) {
+        LOGGER.log(Level.INFO, "message received from {0}: {1}", source.getId(), message); //NON-NLS
+        if (message instanceof ClientMessage clientMessage)
+            pendingMessages.add(new ReceivedMessageClient(clientMessage, source.getId()));
+    }
+
+    @Override
+    public void connectionAdded(Server server, HostedConnection hostedConnection) {
+        LOGGER.log(Level.INFO, "new connection {0}", hostedConnection); //NON-NLS
+        logic.addPlayer(hostedConnection.getId());
+    }
+
+    @Override
+    public void connectionRemoved(Server server, HostedConnection hostedConnection) {
+        LOGGER.log(Level.INFO, "connection closed: {0}", hostedConnection); //NON-NLS
+        final Player player = logic.getPlayerById(hostedConnection.getId());
+        if (player == null)
+            LOGGER.log(Level.INFO, "closed connection does not belong to an active player"); //NON-NLS
+        else { //NON-NLS
+            LOGGER.log(Level.INFO, "closed connection belongs to {0}", player); //NON-NLS
+            exit(0);
+        }
+    }
+
+    /**
+     * Shuts down the server and closes all active connections.
+     *
+     * @param exitValue the exit code to terminate the program with
+     */
+    private void exit(int exitValue) { //NON-NLS
+        LOGGER.log(Level.INFO, "close request"); //NON-NLS
+        if (myServer != null)
+            for (HostedConnection client : myServer.getConnections()) //NON-NLS
+                if (client != null) client.close("Game over"); //NON-NLS
+        System.exit(exitValue);
+    }
+
+    /**
+     * Send the specified message to the specified connection.
+     *
+     * @param id      the connection id
+     * @param message the message
+     */
+    public void send(int id, ServerMessage message) {
+        if (myServer == null || !myServer.isRunning()) {
+            LOGGER.log(Level.ERROR, "no server running when trying to send {0}", message); //NON-NLS
+            return;
+        }
+        final HostedConnection connection = myServer.getConnection(id);
+        if (connection != null)
+            connection.send(message);
+        else
+            LOGGER.log(Level.ERROR, "there is no connection with id={0}", id); //NON-NLS
+    }
+}

Projekte/battleship/client/src/main/java/pp/battleship/client/clienthost/ReceivedMessageClient.java

@@ -0,0 +1,17 @@
+////////////////////////////////////////
+// Programming project code
+// UniBw M, 2022, 2023, 2024
+// www.unibw.de/inf2
+// (c) Mark Minas (mark.minas@unibw.de)
+////////////////////////////////////////
+
+package pp.battleship.client.clienthost;
+
+import pp.battleship.message.client.ClientInterpreter;
+import pp.battleship.message.client.ClientMessage;
+
+record ReceivedMessageClient(ClientMessage message, int from) {
+    void process(ClientInterpreter interpreter) {
+        message.accept(interpreter, from);
+    }
+}

Projekte/battleship/client/src/main/java/pp/battleship/client/gui/BattleAppState.java

@@ -0,0 +1,122 @@
+////////////////////////////////////////
+// Programming project code
+// UniBw M, 2022, 2023, 2024
+// www.unibw.de/inf2
+// (c) Mark Minas (mark.minas@unibw.de)
+////////////////////////////////////////
+
+package pp.battleship.client.gui;
+
+import com.jme3.input.controls.ActionListener;
+import com.jme3.scene.Node;
+import com.jme3.system.AppSettings;
+import pp.battleship.client.BattleshipAppState;
+import pp.battleship.model.IntPoint;
+
+import java.lang.System.Logger;
+import java.lang.System.Logger.Level;
+
+import static pp.battleship.client.BattleshipApp.CLICK;
+
+/**
+ * Represents the state responsible for managing the battle interface within the Battleship game.
+ * This state handles the display and interaction of the battle map, including the opponent's map.
+ * It manages GUI components, input events, and the layout of the interface when this state is enabled.
+ */
+public class BattleAppState extends BattleshipAppState {
+    private static final Logger LOGGER = System.getLogger(BattleAppState.class.getName());
+    private static final float DEPTH = 0f;
+    private static final float GAP = 20f;
+
+    /**
+     * A listener for handling click events in the battle interface.
+     * When a click is detected, it triggers the corresponding actions on the opponent's map.
+     */
+    private final ActionListener clickListener = (name, isPressed, tpf) -> click(isPressed);
+
+    /**
+     * The root node for all GUI components in the battle state.
+     */
+    private final Node battleNode = new Node("Battle"); //NON-NLS
+
+    /**
+     * A view representing the opponent's map in the GUI.
+     */
+    private MapView opponentMapView;
+
+    /**
+     * Enables the battle state by initializing, laying out, and adding GUI components.
+     * Attaches the components to the GUI node and registers input listeners.
+     */
+    @Override
+    protected void enableState() {
+        battleNode.detachAllChildren();
+        initializeGuiComponents();
+        layoutGuiComponents();
+        addGuiComponents();
+        getApp().getGuiNode().attachChild(battleNode);
+        getApp().getInputManager().addListener(clickListener, CLICK);
+    }
+
+    /**
+     * Disables the battle state by removing GUI components and unregistering input listeners.
+     * Also handles cleanup of resources, such as the opponent's map view.
+     */
+    @Override
+    protected void disableState() {
+        getApp().getGuiNode().detachChild(battleNode);
+        getApp().getInputManager().removeListener(clickListener);
+        if (opponentMapView != null) {
+            opponentMapView.unregister();
+            opponentMapView = null;
+        }
+    }
+
+    /**
+     * Initializes the GUI components used in the battle state.
+     * Creates the opponent's map view and adds a grid overlay to it.
+     */
+    private void initializeGuiComponents() {
+        opponentMapView = new MapView(getGameLogic().getOpponentMap(), getApp());
+        opponentMapView.addGrid();
+    }
+
+    /**
+     * Adds the initialized GUI components to the battle node.
+     * Currently, it attaches the opponent's map view to the node.
+     */
+    private void addGuiComponents() {
+        battleNode.attachChild(opponentMapView.getNode());
+    }
+
+    /**
+     * Lays out the GUI components within the window, positioning them appropriately.
+     * The opponent's map view is positioned based on the window's dimensions and a specified gap.
+     */
+    private void layoutGuiComponents() {
+        final AppSettings s = getApp().getContext().getSettings();
+        final float mapWidth = opponentMapView.getWidth();
+        final float mapHeight = opponentMapView.getHeight();
+        final float windowWidth = s.getWidth();
+        final float windowHeight = s.getHeight();
+
+        opponentMapView.getNode().setLocalTranslation(windowWidth - mapWidth - GAP,
+                                                      windowHeight - mapHeight - GAP,
+                                                      DEPTH);
+    }
+
+    /**
+     * Handles click events in the battle interface. If the event indicates a click (not a release),
+     * it translates the cursor position to the model's coordinate system and triggers the game logic
+     * for interacting with the opponent's map.
+     *
+     * @param isPressed whether the mouse button is currently pressed (true) or released (false)
+     */
+    private void click(boolean isPressed) {
+        if (!isPressed || showsDialog())
+            return;
+        final IntPoint cursorPos = opponentMapView.mouseToModel(getApp().getInputManager().getCursorPosition());
+        LOGGER.log(Level.DEBUG, "click: {0}", cursorPos); //NON-NLS
+        getGameLogic().clickOpponentMap(cursorPos);
+    }
+}

Projekte/battleship/client/src/main/java/pp/battleship/client/gui/EditorAppState.java

@@ -0,0 +1,173 @@
+////////////////////////////////////////
+// Programming project code
+// UniBw M, 2022, 2023, 2024
+// www.unibw.de/inf2
+// (c) Mark Minas (mark.minas@unibw.de)
+////////////////////////////////////////
+
+package pp.battleship.client.gui;
+
+import com.jme3.input.controls.ActionListener;
+import com.jme3.math.Vector2f;
+import com.jme3.scene.Node;
+import com.jme3.system.AppSettings;
+import com.simsilica.lemur.Button;
+import com.simsilica.lemur.Container;
+import pp.battleship.client.BattleshipAppState;
+
+import java.lang.System.Logger;
+import java.lang.System.Logger.Level;
+
+import static pp.battleship.Resources.lookup;
+import static pp.battleship.client.BattleshipApp.CLICK;
+
+/**
+ * EditorState manages the editor mode in the Battleship game,
+ * allowing players to place and rotate ships.
+ */
+public class EditorAppState extends BattleshipAppState {
+    private static final Logger LOGGER = System.getLogger(EditorAppState.class.getName());
+    private static final float DEPTH = 0f;
+    private static final float GAP = 20f;
+
+    private final ActionListener clickListener = (name, isPressed, tpf) -> click(isPressed);
+    private final Node editorNode = new Node("Editor"); //NON-NLS
+    private Container buttonContainer;
+    private Button rotateButton;
+    private Button readyButton;
+    private MapView ownMapView;
+    private MapView harborView;
+    private Vector2f oldCursorPosition;
+
+    /**
+     * Enables the editor state by attaching necessary nodes and listeners.
+     */
+    @Override
+    protected void enableState() {
+        editorNode.detachAllChildren();
+        initializeGuiComponents();
+        addGuiComponents();
+        layoutGuiComponents();
+        getApp().getGuiNode().attachChild(editorNode);
+        getApp().getInputManager().addListener(clickListener, CLICK);
+    }
+
+    /**
+     * Disables the editor state by detaching nodes and removing listeners.
+     */
+    @Override
+    protected void disableState() {
+        getApp().getGuiNode().detachChild(editorNode);
+        getApp().getInputManager().removeListener(clickListener);
+        if (ownMapView != null) {
+            ownMapView.unregister();
+            ownMapView = null;
+        }
+        if (harborView != null) {
+            harborView.unregister();
+            harborView = null;
+        }
+    }
+
+    /**
+     * Updates the editor state, handling cursor movement and enabling buttons.
+     *
+     * @param tpf Time per frame
+     */
+    @Override
+    public void update(float tpf) {
+        super.update(tpf);
+        cursorMovement();
+        enableButtons();
+    }
+
+    /**
+     * Enables or disables buttons based on the logic state.
+     */
+    private void enableButtons() {
+        readyButton.setEnabled(getGameLogic().isMapComplete());
+        rotateButton.setEnabled(getGameLogic().movingShip());
+    }
+
+    /**
+     * Handles cursor movement for previewing ship placement.
+     */
+    private void cursorMovement() {
+        if (!getGameLogic().movingShip() || ownMapView == null || showsDialog())
+            return;
+        final Vector2f cursorPosition = getApp().getInputManager().getCursorPosition();
+        if (!cursorPosition.equals(oldCursorPosition)) {
+            oldCursorPosition = new Vector2f(cursorPosition);
+            getGameLogic().movePreview(ownMapView.mouseToModel(cursorPosition));
+        }
+    }
+
+    /**
+     * Initializes the GUI components for the editor.
+     */
+    private void initializeGuiComponents() {
+        ownMapView = new MapView(getGameLogic().getOwnMap(), getApp());
+        harborView = new MapView(getGameLogic().getHarbor(), getApp());
+        ownMapView.addGrid();
+        rotateButton = new Button(lookup("button.rotate"));
+        readyButton = new Button(lookup("button.ready"));
+        rotateButton.addClickCommands(e -> {
+            if (!showsDialog())
+                getGameLogic().rotateShip();
+        });
+        readyButton.addClickCommands(e -> {
+            if (!showsDialog())
+                getGameLogic().mapFinished();
+        });
+        buttonContainer = new Container();
+    }
+
+    /**
+     * Adds the GUI components to the editor node.
+     */
+    private void addGuiComponents() {
+        buttonContainer.addChild(rotateButton, 0, 0);
+        buttonContainer.addChild(readyButton, 0, 1);
+        editorNode.attachChild(ownMapView.getNode());
+        editorNode.attachChild(harborView.getNode());
+        editorNode.attachChild(buttonContainer);
+    }
+
+    /**
+     * Lays out the GUI components on the screen.
+     */
+    private void layoutGuiComponents() {
+        final AppSettings s = getApp().getContext().getSettings();
+        final float harborWidth = harborView.getWidth();
+        final float harborHeight = harborView.getHeight();
+        final float ownMapWidth = ownMapView.getWidth();
+        final float ownMapHeight = ownMapView.getHeight();
+        final float windowWidth = s.getWidth();
+        final float windowHeight = s.getHeight();
+
+        ownMapView.getNode()
+                  .setLocalTranslation(0.5f * (windowWidth - harborWidth - ownMapWidth - GAP),
+                                       0.5f * (windowHeight - ownMapHeight),
+                                       DEPTH);
+
+        harborView.getNode()
+                  .setLocalTranslation(0.5f * (windowWidth - harborWidth + ownMapWidth + GAP),
+                                       0.5f * (windowHeight - harborHeight),
+                                       DEPTH);
+
+        buttonContainer.setLocalTranslation(0.5f * (windowWidth - harborWidth - ownMapWidth - GAP),
+                                            0.5f * (windowHeight - ownMapHeight - GAP),
+                                            DEPTH);
+    }
+
+    /**
+     * Handles click events to place or rotate ships on the maps.
+     */
+    private void click(boolean isPressed) {
+        if (!isPressed || showsDialog()) return;
+        final Vector2f cursorPos = getApp().getInputManager().getCursorPosition();
+        LOGGER.log(Level.DEBUG, "click: {0}", cursorPos); //NON-NLS
+        getGameLogic().clickHarbor(harborView.mouseToModel(cursorPos));
+        getGameLogic().clickOwnMap(ownMapView.mouseToModel(cursorPos));
+    }
+}

Projekte/battleship/client/src/main/java/pp/battleship/client/gui/MapView.java

@@ -0,0 +1,191 @@
+////////////////////////////////////////
+// Programming project code
+// UniBw M, 2022, 2023, 2024
+// www.unibw.de/inf2
+// (c) Mark Minas (mark.minas@unibw.de)
+////////////////////////////////////////
+
+package pp.battleship.client.gui;
+
+import com.jme3.material.Material;
+import com.jme3.material.RenderState.BlendMode;
+import com.jme3.math.ColorRGBA;
+import com.jme3.math.Vector2f;
+import com.jme3.math.Vector3f;
+import com.jme3.scene.Geometry;
+import com.jme3.scene.Node;
+import com.jme3.scene.Spatial.CullHint;
+import com.jme3.scene.shape.Quad;
+import pp.battleship.client.BattleshipApp;
+import pp.battleship.model.IntPoint;
+import pp.battleship.model.ShipMap;
+import pp.util.FloatPoint;
+import pp.util.Position;
+
+/**
+ * Represents the visual view of a {@link ShipMap}, used to display the map structure such as the player's map, harbor,
+ * and opponent's map. This class handles the graphical representation of the map, including background setup, grid lines,
+ * and interaction between the model and the view.
+ */
+class MapView {
+    public static final float FIELD_SIZE = 40f;
+    private static final float GRID_LINE_WIDTH = 2f;
+    private static final float BACKGROUND_DEPTH = -4f;
+    private static final float GRID_DEPTH = -1f;
+    private static final ColorRGBA BACKGROUND_COLOR = new ColorRGBA(0, 0.05f, 0.05f, 0.5f);
+    private static final ColorRGBA GRID_COLOR = ColorRGBA.Green;
+
+    // Reference to the main application and the ship map being visualized
+    private final BattleshipApp app;
+    private final Node mapNode = new Node("map"); // NON-NLS
+    private final ShipMap map;
+    private final MapViewSynchronizer synchronizer;
+
+    /**
+     * Constructs a new MapView for a given {@link ShipMap} and {@link BattleshipApp}.
+     * Initializes the view by setting up the background and registering a synchronizer to listen to changes in the map.
+     *
+     * @param map the ship map to visualize
+     * @param app the main application instance
+     */
+    MapView(ShipMap map, BattleshipApp app) {
+        this.map = map;
+        this.app = app;
+        this.synchronizer = new MapViewSynchronizer(this);
+        setupBackground();
+        app.getGameLogic().addListener(synchronizer);
+    }
+
+    /**
+     * Unregisters the {@link MapViewSynchronizer} from the listener list of the ClientGameLogic,
+     * stopping the view from receiving updates when the underlying {@link ShipMap} changes.
+     * After calling this method, this MapView instance should no longer be used.
+     */
+    void unregister() {
+        app.getGameLogic().removeListener(synchronizer);
+    }
+
+    /**
+     * Gets the {@link ShipMap} associated with this view.
+     *
+     * @return the ship map
+     */
+    public ShipMap getMap() {
+        return map;
+    }
+
+    /**
+     * Gets the {@link BattleshipApp} instance associated with this view.
+     *
+     * @return the main application instance
+     */
+    public BattleshipApp getApp() {
+        return app;
+    }
+
+    /**
+     * Sets up the background of the map view using a quad geometry.
+     * The background is configured with a semi-transparent color and placed at a specific depth.
+     */
+    private void setupBackground() {
+        final Material mat = new Material(app.getAssetManager(), "Common/MatDefs/Misc/Unshaded.j3md"); // NON-NLS
+        mat.setColor("Color", BACKGROUND_COLOR); // NON-NLS
+        mat.getAdditionalRenderState().setBlendMode(BlendMode.Alpha);
+        final Position corner = modelToView(map.getWidth(), map.getHeight());
+        final Geometry background = new Geometry("MapBackground", new Quad(corner.getX(), corner.getY()));
+        background.setMaterial(mat);
+        background.setLocalTranslation(0f, 0f, BACKGROUND_DEPTH);
+        background.setCullHint(CullHint.Never);
+        mapNode.attachChild(background);
+    }
+
+    /**
+     * Adds grid lines to the map view to visually separate the fields within the map.
+     * The grid lines are drawn based on the dimensions of the ship map.
+     */
+    public void addGrid() {
+        for (int x = 0; x <= map.getWidth(); x++) {
+            final Position f = modelToView(x, 0);
+            final Position t = modelToView(x, map.getHeight());
+            mapNode.attachChild(gridLine(f, t));
+        }
+        for (int y = 0; y <= map.getHeight(); y++) {
+            final Position f = modelToView(0, y);
+            final Position t = modelToView(map.getWidth(), y);
+            mapNode.attachChild(gridLine(f, t));
+        }
+    }
+
+    /**
+     * Gets the root node containing all visual elements in this map view.
+     *
+     * @return the root node for the map view
+     */
+    public Node getNode() {
+        return mapNode;
+    }
+
+    /**
+     * Gets the total width of the map in view coordinates.
+     *
+     * @return the width of the map in view coordinates
+     */
+    public float getWidth() {
+        return FIELD_SIZE * map.getWidth();
+    }
+
+    /**
+     * Gets the total height of the map in view coordinates.
+     *
+     * @return the height of the map in view coordinates
+     */
+    public float getHeight() {
+        return FIELD_SIZE * map.getHeight();
+    }
+
+    /**
+     * Converts coordinates from view coordinates to model coordinates.
+     *
+     * @param x the x-coordinate in view space
+     * @param y the y-coordinate in view space
+     * @return the corresponding model coordinates as an {@link IntPoint}
+     */
+    public IntPoint viewToModel(float x, float y) {
+        return new IntPoint((int) Math.floor(x / FIELD_SIZE), (int) Math.floor(y / FIELD_SIZE));
+    }
+
+    /**
+     * Converts coordinates from model coordinates to view coordinates.
+     *
+     * @param x the x-coordinate in model space
+     * @param y the y-coordinate in model space
+     * @return the corresponding view coordinates as a {@link Position}
+     */
+    public Position modelToView(float x, float y) {
+        return new FloatPoint(x * FIELD_SIZE, y * FIELD_SIZE);
+    }
+
+    /**
+     * Converts the mouse position to model coordinates.
+     * This method takes into account the map's transformation in the 3D scene.
+     *
+     * @param pos the 2D vector representing the mouse position in the view
+     * @return the corresponding model coordinates as an {@link IntPoint}
+     */
+    public IntPoint mouseToModel(Vector2f pos) {
+        final Vector3f world = new Vector3f(pos.getX(), pos.getY(), 0f);
+        final Vector3f view = mapNode.getWorldTransform().transformInverseVector(world, null);
+        return viewToModel(view.getX(), view.getY());
+    }
+
+    /**
+     * Creates a visual representation of a grid line between two positions.
+     *
+     * @param p1 the start position of the grid line
+     * @param p2 the end position of the grid line
+     * @return a {@link Geometry} representing the grid line
+     */
+    private Geometry gridLine(Position p1, Position p2) {
+        return app.getDraw().makeFatLine(p1, p2, GRID_DEPTH, GRID_COLOR, GRID_LINE_WIDTH);
+    }
+}

Projekte/battleship/client/src/main/java/pp/battleship/client/gui/MapViewSynchronizer.java

@@ -0,0 +1,153 @@
+////////////////////////////////////////
+// Programming project code
+// UniBw M, 2022, 2023, 2024
+// www.unibw.de/inf2
+// (c) Mark Minas (mark.minas@unibw.de)
+////////////////////////////////////////
+
+package pp.battleship.client.gui;
+
+import com.jme3.material.Material;
+import com.jme3.material.RenderState;
+import com.jme3.material.RenderState.BlendMode;
+import com.jme3.math.ColorRGBA;
+import com.jme3.scene.Geometry;
+import com.jme3.scene.Node;
+import com.jme3.scene.Spatial;
+import com.jme3.scene.shape.Sphere;
+import pp.battleship.model.Battleship;
+import pp.battleship.model.Shell;
+import pp.battleship.model.Shot;
+import pp.util.Position;
+
+import static com.jme3.material.Materials.UNSHADED;
+
+/**
+ * Synchronizes the visual representation of the ship map with the game model.
+ * It handles the rendering of ships and shots on the map view, updating the view
+ * whenever changes occur in the model.
+ */
+class MapViewSynchronizer extends ShipMapSynchronizer {
+    // Constants for rendering properties
+    private static final float SHIP_LINE_WIDTH = 6f;
+    private static final float SHOT_DEPTH = -2f;
+    private static final float SHIP_DEPTH = 0f;
+    private static final float SHELL_DEPTH = 1f;
+    private static final float INDENT = 4f;
+
+    // Colors used for different visual elements
+    private static final ColorRGBA HIT_COLOR = ColorRGBA.Red;
+    private static final ColorRGBA MISS_COLOR = ColorRGBA.Blue;
+    private static final ColorRGBA SHIP_BORDER_COLOR = ColorRGBA.White;
+    private static final ColorRGBA PREVIEW_COLOR = ColorRGBA.Gray;
+    private static final ColorRGBA ERROR_COLOR = ColorRGBA.Red;
+
+    // The MapView associated with this synchronizer
+    private final MapView view;
+
+    /**
+     * Constructs a new MapViewSynchronizer for the given MapView.
+     * Initializes the synchronizer and adds existing elements from the model to the view.
+     *
+     * @param view the MapView to synchronize with the game model
+     */
+    public MapViewSynchronizer(MapView view) {
+        super(view.getMap(), view.getNode());
+        this.view = view;
+        addExisting();
+    }
+
+    /**
+     * Creates a visual representation of a shot on the map.
+     * A hit shot is represented in red, while a miss is represented in blue.
+     *
+     * @param shot the Shot object representing the shot in the model
+     * @return a Spatial representing the shot on the map
+     */
+    @Override
+    public Spatial visit(Shot shot) {
+        // Convert the shot's model coordinates to view coordinates
+        final Position p1 = view.modelToView(shot.getX(), shot.getY());
+        final Position p2 = view.modelToView(shot.getX() + 1, shot.getY() + 1);
+        final ColorRGBA color = shot.isHit() ? HIT_COLOR : MISS_COLOR;
+
+        // Create and return a rectangle representing the shot
+        return view.getApp().getDraw().makeRectangle(p1.getX(), p1.getY(),
+                                                     SHOT_DEPTH,
+                                                     p2.getX() - p1.getX(), p2.getY() - p1.getY(),
+                                                     color);
+    }
+
+    /**
+     * Creates a visual representation of a battleship on the map.
+     * The ship's border color depends on its status: normal, valid preview, or invalid preview.
+     *
+     * @param ship the Battleship object representing the ship in the model
+     * @return a Spatial representing the ship on the map
+     */
+    @Override
+    public Spatial visit(Battleship ship) {
+        // Create a node to represent the ship
+        final Node shipNode = new Node("ship"); //NON-NLS
+
+        // Convert the ship's model coordinates to view coordinates
+        final Position p1 = view.modelToView(ship.getMinX(), ship.getMinY());
+        final Position p2 = view.modelToView(ship.getMaxX() + 1, ship.getMaxY() + 1);
+
+        // Calculate the coordinates for the ship's bounding box
+        final float x1 = p1.getX() + INDENT;
+        final float y1 = p1.getY() + INDENT;
+        final float x2 = p2.getX() - INDENT;
+        final float y2 = p2.getY() - INDENT;
+
+        // Determine the color based on the ship's status
+        final ColorRGBA color = switch (ship.getStatus()) {
+            case NORMAL -> SHIP_BORDER_COLOR;
+            case VALID_PREVIEW -> PREVIEW_COLOR;
+            case INVALID_PREVIEW -> ERROR_COLOR;
+        };
+
+        // Add the ship's borders to the node
+        shipNode.attachChild(shipLine(x1, y1, x2, y1, color));
+        shipNode.attachChild(shipLine(x1, y2, x2, y2, color));
+        shipNode.attachChild(shipLine(x1, y1, x1, y2, color));
+        shipNode.attachChild(shipLine(x2, y1, x2, y2, color));
+
+        // Return the complete ship representation
+        return shipNode;
+    }
+
+    /**
+     * Creates and returns a Spatial representation of the given {@code Shell} object
+     * for 2D visualization in the game. The shell is represented as a circle.
+     *
+     * @param shell The {@code Shell} object to be visualized.
+     * @return A {@code Spatial} object representing the shell on the map.
+     */
+    @Override
+    public Spatial visit(Shell shell) {
+        final ColorRGBA color = ColorRGBA.Black;
+        Geometry ellipse = new Geometry("ellipse", new Sphere(50, 50, MapView.FIELD_SIZE / 2 * 0.8f));
+        Material mat = new Material(view.getApp().getAssetManager(), UNSHADED); //NON-NLS
+        mat.getAdditionalRenderState().setBlendMode(BlendMode.Alpha);
+        mat.getAdditionalRenderState().setFaceCullMode(RenderState.FaceCullMode.Off);
+        mat.setColor("Color", color);
+        ellipse.setMaterial(mat);
+        ellipse.addControl(new Shell2DControl(view, shell));
+        return ellipse;
+    }
+
+    /**
+     * Creates a line geometry representing part of the ship's border.
+     *
+     * @param x1    the starting x-coordinate of the line
+     * @param y1    the starting y-coordinate of the line
+     * @param x2    the ending x-coordinate of the line
+     * @param y2    the ending y-coordinate of the line
+     * @param color the color of the line
+     * @return a Geometry representing the line
+     */
+    private Geometry shipLine(float x1, float y1, float x2, float y2, ColorRGBA color) {
+        return view.getApp().getDraw().makeFatLine(x1, y1, x2, y2, SHIP_DEPTH, color, SHIP_LINE_WIDTH);
+    }
+}

Projekte/battleship/client/src/main/java/pp/battleship/client/gui/SeaAppState.java

@@ -0,0 +1,203 @@
+////////////////////////////////////////
+// Programming project code
+// UniBw M, 2022, 2023, 2024
+// www.unibw.de/inf2
+// (c) Mark Minas (mark.minas@unibw.de)
+////////////////////////////////////////
+
+package pp.battleship.client.gui;
+
+import com.jme3.app.Application;
+import com.jme3.app.state.AppStateManager;
+import com.jme3.asset.AssetManager;
+import com.jme3.light.AmbientLight;
+import com.jme3.light.DirectionalLight;
+import com.jme3.material.Material;
+import com.jme3.math.ColorRGBA;
+import com.jme3.math.Vector2f;
+import com.jme3.math.Vector3f;
+import com.jme3.renderer.Camera;
+import com.jme3.renderer.queue.RenderQueue.ShadowMode;
+import com.jme3.scene.Geometry;
+import com.jme3.scene.Node;
+import com.jme3.scene.Spatial;
+import com.jme3.scene.shape.Box;
+import com.jme3.shadow.DirectionalLightShadowRenderer;
+import com.jme3.shadow.EdgeFilteringMode;
+import com.jme3.texture.Texture;
+import com.jme3.util.SkyFactory;
+import com.jme3.util.TangentBinormalGenerator;
+import pp.battleship.client.BattleshipAppState;
+import pp.battleship.model.ShipMap;
+import pp.util.FloatMath;
+
+import static pp.util.FloatMath.TWO_PI;
+import static pp.util.FloatMath.cos;
+import static pp.util.FloatMath.sin;
+import static pp.util.FloatMath.sqrt;
+
+/**
+ * Manages the rendering and visual aspects of the sea and sky in the Battleship game.
+ * This state is responsible for setting up and updating the sea, sky, and lighting
+ * conditions, and controls the camera to create a dynamic view of the game environment.
+ */
+public class SeaAppState extends BattleshipAppState {
+    /**
+     * The path to the sea texture material.
+     */
+    private static final String SEA_TEXTURE = "Textures/Terrain/Water/Water.j3m"; //NON-NLS
+    private static final float ABOVE_SEA_LEVEL = 4f;
+    private static final float INCLINATION = 2.5f;
+
+    /**
+     * The root node for all visual elements in this state.
+     */
+    private final Node viewNode = new Node("view"); //NON-NLS
+
+    /**
+     * The node containing the scene elements, such as the sea surface.
+     */
+    private final Node sceneNode = new Node("scene"); //NON-NLS
+
+    /**
+     * Synchronizes the sea's visual representation with the game logic.
+     */
+    private SeaSynchronizer synchronizer;
+
+    /**
+     * The current angle of the camera around the center of the map.
+     */
+    private float cameraAngle;
+
+    /**
+     * Initializes the state by setting up the sky, lights, and other visual components.
+     * This method is called when the state is first attached to the state manager.
+     *
+     * @param stateManager the state manager
+     * @param application  the application
+     */
+    @Override
+    public void initialize(AppStateManager stateManager, Application application) {
+        super.initialize(stateManager, application);
+        viewNode.attachChild(sceneNode);
+        setupLights();
+        setupSky();
+    }
+
+    /**
+     * Enables the sea and sky state, setting up the scene and registering any necessary listeners.
+     * This method is called when the state is set to active.
+     */
+    @Override
+    protected void enableState() {
+        sceneNode.detachAllChildren();
+        setupScene();
+        if (synchronizer == null) {
+            synchronizer = new SeaSynchronizer(getApp(), sceneNode, getGameLogic().getOwnMap());
+            getGameLogic().addListener(synchronizer);
+        }
+        getApp().getRootNode().attachChild(viewNode);
+    }
+
+    /**
+     * Disables the sea and sky state, removing visual elements from the scene and unregistering listeners.
+     * This method is called when the state is set to inactive.
+     */
+    @Override
+    protected void disableState() {
+        getApp().getRootNode().detachChild(viewNode);
+        if (synchronizer != null) {
+            getGameLogic().removeListener(synchronizer);
+            synchronizer = null;
+        }
+    }
+
+    /**
+     * Updates the state each frame, moving the camera to simulate it circling around the map.
+     *
+     * @param tpf the time per frame (seconds)
+     */
+    @Override
+    public void update(float tpf) {
+        super.update(tpf);
+        cameraAngle += TWO_PI * 0.05f * tpf;
+        adjustCamera();
+    }
+
+    /**
+     * Sets up the lighting for the scene, including directional and ambient lights.
+     * Also configures shadows to enhance the visual depth of the scene.
+     */
+    private void setupLights() {
+        final AssetManager assetManager = getApp().getAssetManager();
+        final DirectionalLightShadowRenderer shRend = new DirectionalLightShadowRenderer(assetManager, 2048, 3);
+        shRend.setLambda(0.55f);
+        shRend.setShadowIntensity(0.6f);
+        shRend.setEdgeFilteringMode(EdgeFilteringMode.Bilinear);
+        getApp().getViewPort().addProcessor(shRend);
+
+        final DirectionalLight sun = new DirectionalLight();
+        sun.setDirection(new Vector3f(-1f, -0.7f, -1f).normalizeLocal());
+        viewNode.addLight(sun);
+        shRend.setLight(sun);
+
+        final AmbientLight ambientLight = new AmbientLight(new ColorRGBA(0.3f, 0.3f, 0.3f, 0f));
+        viewNode.addLight(ambientLight);
+    }
+
+    /**
+     * Sets up the sky in the scene using a skybox with textures for all six directions.
+     * This creates a realistic and immersive environment for the sea.
+     */
+    private void setupSky() {
+        final AssetManager assetManager = getApp().getAssetManager();
+        final Texture west = assetManager.loadTexture("Textures/Sky/Lagoon/lagoon_west.jpg"); //NON-NLS
+        final Texture east = assetManager.loadTexture("Textures/Sky/Lagoon/lagoon_east.jpg"); //NON-NLS
+        final Texture north = assetManager.loadTexture("Textures/Sky/Lagoon/lagoon_north.jpg"); //NON-NLS
+        final Texture south = assetManager.loadTexture("Textures/Sky/Lagoon/lagoon_south.jpg"); //NON-NLS
+        final Texture up = assetManager.loadTexture("Textures/Sky/Lagoon/lagoon_up.jpg"); //NON-NLS
+        final Texture down = assetManager.loadTexture("Textures/Sky/Lagoon/lagoon_down.jpg"); //NON-NLS
+        final Spatial sky = SkyFactory.createSky(assetManager, west, east, north, south, up, down);
+        sky.rotate(0f, FloatMath.PI, 0f);
+        viewNode.attachChild(sky);
+    }
+
+    /**
+     * Sets up the sea surface in the scene. This includes creating the sea mesh,
+     * applying textures, and enabling shadows.
+     */
+    private void setupScene() {
+        final ShipMap ownMap = getGameLogic().getOwnMap();
+        final float x = 0.5f * ownMap.getWidth();
+        final float y = 0.5f * ownMap.getHeight();
+        final Box seaMesh = new Box(y + 0.5f, 0.1f, x + 0.5f);
+        final Geometry seaGeo = new Geometry("sea", seaMesh); //NON-NLS
+        seaGeo.setLocalTranslation(new Vector3f(y, -0.1f, x));
+        seaMesh.scaleTextureCoordinates(new Vector2f(4f, 4f));
+        final Material seaMat = getApp().getAssetManager().loadMaterial(SEA_TEXTURE);
+        seaGeo.setMaterial(seaMat);
+        seaGeo.setShadowMode(ShadowMode.CastAndReceive);
+        TangentBinormalGenerator.generate(seaGeo);
+        sceneNode.attachChild(seaGeo);
+    }
+
+    /**
+     * Adjusts the camera position and orientation to create a circular motion around
+     * the center of the map. This provides a dynamic view of the sea and surrounding environment.
+     */
+    private void adjustCamera() {
+        final ShipMap ownMap = getGameLogic().getOwnMap();
+        final float mx = 0.5f * ownMap.getWidth();
+        final float my = 0.5f * ownMap.getHeight();
+        final float radius = 2f * sqrt(mx * mx + my + my);
+        final float cos = radius * cos(cameraAngle);
+        final float sin = radius * sin(cameraAngle);
+        final float x = mx - cos;
+        final float y = my - sin;
+        final Camera camera = getApp().getCamera();
+        camera.setLocation(new Vector3f(y, ABOVE_SEA_LEVEL, x));
+        camera.getRotation().lookAt(new Vector3f(sin, -INCLINATION, cos),
+                                    Vector3f.UNIT_Y);
+        camera.update();
+    }
+}

Projekte/battleship/client/src/main/java/pp/battleship/client/gui/SeaSynchronizer.java

@@ -0,0 +1,269 @@
+////////////////////////////////////////
+// Programming project code
+// UniBw M, 2022, 2023, 2024
+// www.unibw.de/inf2
+// (c) Mark Minas (mark.minas@unibw.de)
+////////////////////////////////////////
+
+package pp.battleship.client.gui;
+
+import com.jme3.material.Material;
+import com.jme3.material.RenderState.BlendMode;
+import com.jme3.math.ColorRGBA;
+import com.jme3.renderer.queue.RenderQueue.ShadowMode;
+import com.jme3.scene.Geometry;
+import com.jme3.scene.Node;
+import com.jme3.scene.Spatial;
+import com.jme3.scene.shape.Box;
+import com.jme3.scene.shape.Cylinder;
+import pp.battleship.client.BattleshipApp;
+import pp.battleship.model.Battleship;
+import pp.battleship.model.Rotation;
+import pp.battleship.model.Shell;
+import pp.battleship.model.ShipMap;
+import pp.battleship.model.Shot;
+
+import java.util.Timer;
+import java.util.TimerTask;
+
+import static java.util.Objects.requireNonNull;
+import static pp.JmeUtil.mapToWorldCord;
+import static pp.util.FloatMath.HALF_PI;
+import static pp.util.FloatMath.PI;
+
+/**
+ * The {@code SeaSynchronizer} class is responsible for synchronizing the graphical
+ * representation of the ships and shots on the sea map with the underlying data model.
+ * It extends the {@link ShipMapSynchronizer} to provide specific synchronization
+ * logic for the sea map.
+ */
+class SeaSynchronizer extends ShipMapSynchronizer {
+    private static final String UNSHADED = "Common/MatDefs/Misc/Unshaded.j3md"; //NON-NLS
+    private static final String LIGHTING = "Common/MatDefs/Light/Lighting.j3md";
+    private static final String COLOR = "Color"; //NON-NLS
+    private static final String SHIP = "ship"; //NON-NLS
+    private static final String SHOT = "shot"; //NON-NLS
+    private static final ColorRGBA BOX_COLOR = ColorRGBA.Gray;
+    private static final ColorRGBA SPLASH_COLOR = new ColorRGBA(0f, 0f, 1f, 0.4f);
+    private static final ColorRGBA HIT_COLOR = new ColorRGBA(1f, 0f, 0f, 0.4f);
+
+    private final ShipMap map;
+    private final BattleshipApp app;
+
+    /**
+     * Constructs a {@code SeaSynchronizer} object with the specified application, root node, and ship map.
+     *
+     * @param app  the Battleship application
+     * @param root the root node to which graphical elements will be attached
+     * @param map  the ship map containing the ships and shots
+     */
+    public SeaSynchronizer(BattleshipApp app, Node root, ShipMap map) {
+        super(app.getGameLogic().getOwnMap(), root);
+        this.app = app;
+        this.map = map;
+        addExisting();
+    }
+
+    /**
+     * Visits a {@link Shot} and creates a graphical representation of it.
+     * If the shot is a hit, it attaches the representation to the ship node.
+     *
+     * @param shot the shot to be represented
+     * @return the graphical representation of the shot, or null if the shot is a hit
+     * and the representation has been attached to the ship node
+     */
+    @Override
+    public Spatial visit(Shot shot) {
+        return shot.isHit() ? handleHit(shot) : handleMiss(shot);
+    }
+
+    private Spatial handleMiss(Shot shot) {
+        return app.getEffectHandler().waterSplash(mapToWorldCord(shot.getX(), shot.getY()));
+    }
+
+    /**
+     * Handles a hit by attaching its representation to the node that
+     * contains the ship model as a child so that it moves with the ship.
+     *
+     * @param shot a hit
+     * @return always null to prevent the representation from being attached
+     * to the items node as well
+     */
+    private Spatial handleHit(Shot shot) {
+        final Battleship ship = requireNonNull(map.findShipAt(shot), "Missing ship");
+        final Node shipNode = requireNonNull((Node) getSpatial(ship), "Missing ship node");
+        shipNode.getControl(ShipControl.class).hit(shot);
+        if (ship.isDestroyed()) {
+            shipNode.getControl(ShipControl.class).destroyed();
+
+            new Timer().schedule(new TimerTask() {
+                @Override
+                public void run() {
+                    handleShipDestroy(shipNode);
+                }
+            }, 10000);
+        }
+        return null;
+    }
+
+    private void handleShipDestroy(Node shipNode) {
+        shipNode.getParent().detachChild(shipNode);
+    }
+
+    /**
+     * Creates a cylinder geometry representing the specified shot.
+     * The appearance of the cylinder depends on whether the shot is a hit or a miss.
+     *
+     * @param shot the shot to be represented
+     * @return the geometry representing the shot
+     */
+    private Geometry createCylinder(Shot shot) {
+        final ColorRGBA color = shot.isHit() ? HIT_COLOR : SPLASH_COLOR;
+        final float height = shot.isHit() ? 1.2f : 0.1f;
+
+        final Cylinder cylinder = new Cylinder(2, 20, 0.45f, height, true);
+        final Geometry geometry = new Geometry(SHOT, cylinder);
+
+        geometry.setMaterial(createColoredMaterial(color));
+        geometry.rotate(HALF_PI, 0f, 0f);
+        // compute the center of the shot in world coordinates
+        geometry.setLocalTranslation(shot.getY() + 0.5f, 0f, shot.getX() + 0.5f);
+
+        return geometry;
+    }
+
+    /**
+     * Visits a {@link Battleship} and creates a graphical representation of it.
+     * The representation is either a 3D model or a simple box depending on the
+     * type of battleship.
+     *
+     * @param ship the battleship to be represented
+     * @return the node containing the graphical representation of the battleship
+     */
+    @Override
+    public Spatial visit(Battleship ship) {
+        final Node node = new Node(SHIP);
+        node.attachChild(createShip(ship));
+        // compute the center of the ship in world coordinates
+        final float x = 0.5f * (ship.getMinY() + ship.getMaxY() + 1f);
+        final float z = 0.5f * (ship.getMinX() + ship.getMaxX() + 1f);
+        node.setLocalTranslation(x, 0f, z);
+        node.addControl(new ShipControl(ship, node, app.getEffectHandler()));
+        return node;
+    }
+
+    /**
+     * Creates and returns a 3D model representation of the given {@code Shell} object
+     * for visualization in the game.
+     *
+     * @param shell The {@code Shell} object to be visualized.
+     * @return A {@code Spatial} object representing the 3D model of the shell.
+     */
+    @Override
+    public Spatial visit(Shell shell) {
+        final Spatial model = app.getAssetManager().loadModel("Models/Shell/shell.j3o");
+        model.setLocalScale(.05f);
+        model.setShadowMode(ShadowMode.CastAndReceive);
+        Material mat = new Material(app.getAssetManager(), LIGHTING);
+        mat.setTexture("DiffuseMap", app.getAssetManager().loadTexture("Models/Shell/shell_color.png"));
+        mat.setReceivesShadows(true);
+        model.setMaterial(mat);
+
+        model.addControl(new ShellControl(shell));
+        return model;
+    }
+
+    /**
+     * Creates the appropriate graphical representation of the specified battleship.
+     * The representation is either a detailed model or a simple box based on the length of the ship.
+     *
+     * @param ship the battleship to be represented
+     * @return the spatial representing the battleship
+     */
+    private Spatial createShip(Battleship ship) {
+        return switch (ship.getLength()) {
+            case 1 -> createBattleship(ship, ShipModel.SHIP1);
+            case 2 -> createBattleship(ship, ShipModel.SHIP2);
+            case 3 -> createBattleship(ship, ShipModel.SHIP3);
+            case 4 -> createBattleship(ship, ShipModel.SHIP4);
+            default -> createBox(ship);
+        };
+    }
+
+    /**
+     * Creates a simple box to represent a battleship that is not of the "King George V" type.
+     *
+     * @param ship the battleship to be represented
+     * @return the geometry representing the battleship as a box
+     */
+    private Spatial createBox(Battleship ship) {
+        final Box box = new Box(0.5f * (ship.getMaxY() - ship.getMinY()) + 0.3f,
+                                0.3f,
+                                0.5f * (ship.getMaxX() - ship.getMinX()) + 0.3f);
+        final Geometry geometry = new Geometry(SHIP, box);
+        geometry.setMaterial(createColoredMaterial(BOX_COLOR));
+        geometry.setShadowMode(ShadowMode.CastAndReceive);
+
+        return geometry;
+    }
+
+    /**
+     * Creates a new {@link Material} with the specified color.
+     * If the color includes transparency (i.e., alpha value less than 1),
+     * the material's render state is set to use alpha blending, allowing for
+     * semi-transparent rendering.
+     *
+     * @param color the {@link ColorRGBA} to be applied to the material. If the alpha value
+     *              of the color is less than 1, the material will support transparency.
+     * @return a {@link Material} instance configured with the specified color and,
+     * if necessary, alpha blending enabled.
+     */
+    private Material createColoredMaterial(ColorRGBA color) {
+        final Material material = new Material(app.getAssetManager(), UNSHADED);
+        if (color.getAlpha() < 1f)
+            material.getAdditionalRenderState().setBlendMode(BlendMode.Alpha);
+        material.setColor(COLOR, color);
+        return material;
+    }
+
+    /**
+     * Creates a detailed 3D model to represent a "King George V" battleship.
+     *
+     * @param ship the battleship to be represented
+     * @return the spatial representing the "King George V" battleship
+     */
+    private Spatial createBattleship(Battleship ship, ShipModel shipModel) {
+        final Spatial model = app.getAssetManager().loadModel(shipModel.getPath());
+
+        model.rotate(-HALF_PI, calculateRotationAngle(ship.getRot()), 0f);
+        model.scale(shipModel.getScale());
+        model.setLocalTranslation(shipModel.getTranslation());
+        model.setShadowMode(ShadowMode.CastAndReceive);
+
+        Material mat = new Material(app.getAssetManager(), LIGHTING);
+
+        String colorPath = shipModel.getColorPath();
+        String bumpPath = shipModel.getBumpPath();
+        if (colorPath != null) mat.setTexture("DiffuseMap", app.getAssetManager().loadTexture(colorPath));
+        if (bumpPath != null) mat.setTexture("NormalMap", app.getAssetManager().loadTexture(bumpPath));
+
+        mat.setReceivesShadows(true);
+        model.setMaterial(mat);
+        return model;
+    }
+
+    /**
+     * Calculates the rotation angle for the specified rotation.
+     *
+     * @param rot the rotation of the battleship
+     * @return the rotation angle in radians
+     */
+    private static float calculateRotationAngle(Rotation rot) {
+        return switch (rot) {
+            case RIGHT -> HALF_PI;
+            case DOWN -> 0f;
+            case LEFT -> -HALF_PI;
+            case UP -> PI;
+        };
+    }
+}

Projekte/battleship/client/src/main/java/pp/battleship/client/gui/Shell2DControl.java

@@ -0,0 +1,49 @@
+package pp.battleship.client.gui;
+
+import com.jme3.math.Vector3f;
+import com.jme3.renderer.RenderManager;
+import com.jme3.renderer.ViewPort;
+import com.jme3.scene.control.AbstractControl;
+import pp.battleship.model.Shell;
+import pp.util.Position;
+
+/**
+ * Controls the 2D representation of a {@code Shell} in the game, updating its position
+ * based on the shell's current state in the game model. The {@code Shell2DControl} class
+ * is responsible for translating the shell's 3D position to a 2D view position within
+ * the game's map view.
+ */
+public class Shell2DControl extends AbstractControl {
+    private final Shell shell;
+    private final MapView view;
+
+    /**
+     * Constructs a new {@code Shell2DControl} to manage the 2D visualization of the given {@code Shell}.
+     *
+     * @param view  The {@code MapView} used to get information about the map to display.
+     * @param shell The {@code Shell} being visualized.
+     */
+    public Shell2DControl(MapView view, Shell shell){
+        this.shell = shell;
+        this.view = view;
+    }
+
+    /**
+     * Updates the position of the shell's 2D representation based on the shell's current
+     * 3D position in the game model. The position is mapped from model space to view space
+     * coordinates and translated to the appropriate location within the {@code MapView}.
+     *
+     * @param tpf Time per frame, representing the time elapsed since the last frame.
+     */
+    @Override
+    protected void controlUpdate(float tpf) {
+        Vector3f shellPos = shell.getPosition();
+        Position viewPos = view.modelToView(shellPos.x, shellPos.z);
+        spatial.setLocalTranslation(viewPos.getX() + MapView.FIELD_SIZE / 2, viewPos.getY() + MapView.FIELD_SIZE / 2, 0);
+    }
+
+    @Override
+    protected void controlRender(RenderManager rm, ViewPort vp) {
+        // No rendering-specific behavior required for this control
+    }
+}

Projekte/battleship/client/src/main/java/pp/battleship/client/gui/ShellControl.java

@@ -0,0 +1,51 @@
+package pp.battleship.client.gui;
+
+import com.jme3.math.Vector3f;
+import com.jme3.renderer.RenderManager;
+import com.jme3.renderer.ViewPort;
+import com.jme3.scene.control.AbstractControl;
+import pp.battleship.model.Shell;
+
+import static pp.JmeUtil.mapToWorldCord;
+import static pp.util.FloatMath.PI;
+
+/**
+ * Controls the 3D representation of a {@code Shell} in the game, updating its position
+ * and rotation based on the shell's current state in the game model. The {@code ShellControl}
+ * class ensures that the spatial associated with the shell is positioned and oriented correctly
+ * within the world.
+ */
+public class ShellControl extends AbstractControl {
+    private final Shell shell;
+
+    /**
+     * Constructs a new {@code ShellControl} to manage the 3D visualization of the given {@code Shell}.
+     *
+     * @param shell The {@code Shell} being visualized and controlled.
+     */
+    public ShellControl(Shell shell){
+        super();
+        this.shell = shell;
+    }
+
+    /**
+     * Updates the 3D position and rotation of the shell based on its current state.
+     * Converts map coordinates to world coordinates and applies the shell's orientation.
+     *
+     * @param tpf Time per frame, representing the elapsed time since the last update.
+     */
+    @Override
+    protected void controlUpdate(float tpf) {
+        Vector3f pos = shell.getPosition();
+        Vector3f fixed = mapToWorldCord(pos.x, pos.z);
+        fixed.setY(pos.y);
+        spatial.setLocalTranslation(fixed);
+        spatial.setLocalRotation(shell.getRotation());
+        spatial.rotate(PI/2,0,0);
+    }
+
+    @Override
+    protected void controlRender(RenderManager rm, ViewPort vp) {
+        // No rendering-specific behavior required for this control
+    }
+}

Projekte/battleship/client/src/main/java/pp/battleship/client/gui/ShipControl.java

@@ -0,0 +1,167 @@
+////////////////////////////////////////
+// Programming project code
+// UniBw M, 2022, 2023, 2024
+// www.unibw.de/inf2
+// (c) Mark Minas (mark.minas@unibw.de)
+////////////////////////////////////////
+
+package pp.battleship.client.gui;
+
+import com.jme3.math.Quaternion;
+import com.jme3.math.Vector3f;
+import com.jme3.renderer.RenderManager;
+import com.jme3.renderer.ViewPort;
+import com.jme3.scene.Node;
+import com.jme3.scene.control.AbstractControl;
+import pp.battleship.client.EffectHandler;
+import pp.battleship.model.Battleship;
+import pp.battleship.model.Rotation;
+import pp.battleship.model.Shot;
+
+import java.util.Timer;
+import java.util.TimerTask;
+
+import static pp.JmeUtil.mapToWorldCord;
+import static pp.util.FloatMath.DEG_TO_RAD;
+import static pp.util.FloatMath.TWO_PI;
+import static pp.util.FloatMath.sin;
+
+/**
+ * Controls the pitch oscillation and sinking behavior of a {@code Battleship} model in the game.
+ * The ship tilts back and forth to simulate movement on water, and can also be animated to sink
+ * when destroyed.
+ */
+class ShipControl extends AbstractControl {
+    private static final float SINK_SPEED = 0.04f;
+    private static final float SINK_ROT_SPEED = 0.1f;
+
+    // The axis of rotation for the ship's pitch (tilting).
+    private final Vector3f axis;
+
+    // The duration of one oscillation cycle in seconds.
+    private final float cycle;
+
+    // The amplitude of the pitch oscillation in radians.
+    private final float amplitude;
+
+    // Quaternion representing the ship's pitch rotation.
+    private final Quaternion pitch = new Quaternion();
+
+    // The current time within the oscillation cycle.
+    private float time;
+
+    // Flag indicating if the ship is sinking.
+    private boolean sinking;
+
+    // The battleship being controlled.
+    private final Battleship battleship;
+
+    // Node representing the ship in the scene graph.
+    private final Node shipNode;
+
+    // Handles visual effects for the ship.
+    private final EffectHandler effectHandler;
+
+    /**
+     * Constructs a new {@code ShipControl} instance to manage the effects for a specified {@code Battleship}.
+     * The ship's orientation determines the axis of rotation, and its length affects the oscillation cycle
+     * and amplitude.
+     *
+     * @param battleship    The {@code Battleship} being controlled.
+     * @param shipNode      The scene graph node representing the ship.
+     * @param effectHandler The {@code EffectHandler} for creating visual effects.
+     */
+    public ShipControl(Battleship battleship, Node shipNode, EffectHandler effectHandler) {
+        this.battleship = battleship;
+        this.shipNode = shipNode;
+        this.effectHandler = effectHandler;
+
+        sinking = false;
+        // Determine the axis of rotation based on the ship's orientation.
+        axis = switch (battleship.getRot()) {
+            case LEFT, RIGHT -> Vector3f.UNIT_X;
+            case UP, DOWN -> Vector3f.UNIT_Z;
+        };
+
+        // Set the cycle duration and amplitude based on the ship's length.
+        cycle = battleship.getLength() * 2f;
+        amplitude = 5f * DEG_TO_RAD / battleship.getLength();
+    }
+
+    /**
+     * Updates the ship's motion. If the ship is sinking, it animates the sinking process.
+     * Otherwise, it oscillates the ship to simulate wave motion.
+     *
+     * @param tpf Time per frame, used to update the ship's motion.
+     */
+    @Override
+    protected void controlUpdate(float tpf) {
+        if (sinking) {
+            handleSinking(tpf);
+        }
+        else {
+            handlePitch(tpf);
+        }
+    }
+
+    // Handles the sinking animation.
+    private void handleSinking(float tpf) {
+        if (spatial == null) return;
+
+        spatial.setLocalTranslation(spatial.getLocalTranslation().add(new Vector3f(0, -1, 0).mult(tpf * SINK_SPEED)));
+        if (battleship.getRot() == Rotation.UP || battleship.getRot() == Rotation.DOWN) {
+            spatial.rotate(tpf * SINK_ROT_SPEED, 0, 0);
+        }
+        else {
+            spatial.rotate(0, 0, tpf * SINK_ROT_SPEED);
+        }
+    }
+
+    // Handles the pitch oscillation to simulate wave movement.
+    private void handlePitch(float tpf) {
+        if (spatial == null) return;
+
+        // Update time in the oscillation cycle.
+        time = (time + tpf) % cycle;
+
+        // Calculate the pitch angle.
+        float angle = amplitude * sin(time * TWO_PI / cycle);
+
+        // Update pitch rotation.
+        pitch.fromAngleAxis(angle, axis);
+
+        // Apply rotation to the spatial.
+        spatial.setLocalRotation(pitch);
+    }
+
+    @Override
+    protected void controlRender(RenderManager rm, ViewPort vp) {
+        // No rendering-specific behavior required.
+    }
+
+    /**
+     * Initiates the ship's sinking animation and schedules its destruction.
+     */
+    public void destroyed() {
+        sinking = true;
+        shipNode.attachChild(effectHandler.debrisSplash(shipNode.getLocalTranslation()));
+        new Timer().schedule(new TimerTask() {
+            @Override
+            public void run() {
+                effectHandler.destroyShip(battleship);
+            }
+        }, 4000);
+    }
+
+    /**
+     * Triggers an effect when the ship is hit by a shot, creating a fire effect at the impact location.
+     *
+     * @param shot The shot that hit the ship.
+     */
+    public void hit(Shot shot) {
+        Vector3f shipNodePos = shipNode.getLocalTranslation();
+        Vector3f shotWorld = mapToWorldCord(shot.getX(), shot.getY());
+        Vector3f firePos = shotWorld.subtract(shipNodePos);
+        shipNode.attachChild(effectHandler.createFire(firePos, battleship));
+    }
+}

Projekte/battleship/client/src/main/java/pp/battleship/client/gui/ShipMapSynchronizer.java

@@ -0,0 +1,89 @@
+////////////////////////////////////////
+// Programming project code
+// UniBw M, 2022, 2023, 2024
+// www.unibw.de/inf2
+// (c) Mark Minas (mark.minas@unibw.de)
+////////////////////////////////////////
+
+package pp.battleship.client.gui;
+
+import com.jme3.scene.Node;
+import com.jme3.scene.Spatial;
+import pp.battleship.model.Item;
+import pp.battleship.model.ShipMap;
+import pp.battleship.model.Visitor;
+import pp.battleship.notification.GameEventListener;
+import pp.battleship.notification.ItemAddedEvent;
+import pp.battleship.notification.ItemRemovedEvent;
+import pp.view.ModelViewSynchronizer;
+
+/**
+ * Abstract base class for synchronizing the visual representation of a {@link ShipMap} with its model state.
+ * This class handles the addition and removal of items from the ship map, ensuring that changes in the model
+ * are accurately reflected in the view.
+ * <p>
+ * Subclasses are responsible for providing the specific implementation of how each item in the map
+ * is represented visually by implementing the {@link Visitor} interface.
+ * </p>
+ */
+abstract class ShipMapSynchronizer extends ModelViewSynchronizer<Item> implements Visitor<Spatial>, GameEventListener {
+    // The ship map that this synchronizer is responsible for
+    private final ShipMap shipMap;
+
+    /**
+     * Constructs a new ShipMapSynchronizer.
+     * Initializes the synchronizer with the provided ship map and the root node for attaching view representations.
+     *
+     * @param map  the ship map to be synchronized
+     * @param root the root node to which the view representations of the ship map items are attached
+     */
+    protected ShipMapSynchronizer(ShipMap map, Node root) {
+        super(root);
+        this.shipMap = map;
+    }
+
+    /**
+     * Translates a model item into its corresponding visual representation.
+     * The specific visual representation is determined by the concrete implementation of the {@link Visitor} interface.
+     *
+     * @param item the item from the model to be translated
+     * @return the visual representation of the item as a {@link Spatial}
+     */
+    @Override
+    protected Spatial translate(Item item) {
+        return item.accept(this);
+    }
+
+    /**
+     * Adds the existing items from the ship map to the view.
+     * This method should be called during initialization to ensure that all current items in the ship map
+     * are visually represented.
+     */
+    protected void addExisting() {
+        shipMap.getItems().forEach(this::add);
+    }
+
+    /**
+     * Handles the event when an item is removed from the ship map.
+     * Removes the visual representation of the item from the view if it belongs to the synchronized ship map.
+     *
+     * @param event the event indicating that an item has been removed from the ship map
+     */
+    @Override
+    public void receivedEvent(ItemRemovedEvent event) {
+        if (shipMap == event.map())
+            delete(event.item());
+    }
+
+    /**
+     * Handles the event when an item is added to the ship map.
+     * Adds the visual representation of the new item to the view if it belongs to the synchronized ship map.
+     *
+     * @param event the event indicating that an item has been added to the ship map
+     */
+    @Override
+    public void receivedEvent(ItemAddedEvent event) {
+        if (shipMap == event.map())
+            add(event.item());
+    }
+}

Projekte/battleship/client/src/main/java/pp/battleship/client/gui/ShipModel.java

@@ -0,0 +1,82 @@
+package pp.battleship.client.gui;
+
+import com.jme3.math.Vector3f;
+
+/**
+ * Enum representing different ship models for the Battleship game.
+ * Each ship model has a corresponding 3D model path, scale, translation, color texture, and optional bump texture.
+ */
+public enum ShipModel {
+    SHIP1("Models/Ships/1/ship1.j3o", 0.15f, new Vector3f(0f, 0f, 0f), "Models/Ships/1/ship1_color.png", null),
+    SHIP2("Models/Ships/2/ship2.j3o", 0.03f, new Vector3f(0f, 0.2f, 0f), "Models/Ships/2/ship2.jpg", null),
+    SHIP3("Models/Ships/3/ship3.j3o", 0.47f, new Vector3f(0f, -0.2f, 0f), "Models/Ships/3/ship3_color.jpg", null),
+    SHIP4("Models/Ships/4/ship4.j3o", 1.48f, new Vector3f(0f, 0f, 0f), "Models/Ships/4/ship4_color.jpg", "Models/Ships/4/ship4_bump.jpg");
+
+    private final String modelPath;
+    private final float modelScale;
+    private final Vector3f translation;
+    private final String colorPath;
+    private final String bumpPath;
+
+    /**
+     * Constructs a new ShipModel with the specified parameters.
+     *
+     * @param modelPath   the path to the 3D model of the ship
+     * @param modelScale  the scale factor to be applied to the model
+     * @param translation the translation to be applied to the model
+     * @param colorPath   the path to the color texture of the model
+     * @param bumpPath    the optional path to the bump texture of the model (may be null)
+     */
+    ShipModel(String modelPath, float modelScale, Vector3f translation, String colorPath, String bumpPath) {
+        this.modelPath = modelPath;
+        this.modelScale = modelScale;
+        this.translation = translation;
+        this.colorPath = colorPath;
+        this.bumpPath = bumpPath;
+    }
+
+    /**
+     * Returns the path to the bump texture of the ship model.
+     *
+     * @return the bump texture path, or null if no bump texture is defined
+     */
+    public String getBumpPath() {
+        return bumpPath;
+    }
+
+    /**
+     * Returns the path to the color texture of the ship model.
+     *
+     * @return the color texture path
+     */
+    public String getColorPath() {
+        return colorPath;
+    }
+
+    /**
+     * Returns the scale factor of the ship model.
+     *
+     * @return the scale factor
+     */
+    public float getScale() {
+        return modelScale;
+    }
+
+    /**
+     * Returns the path to the 3D model of the ship.
+     *
+     * @return the model path
+     */
+    public String getPath() {
+        return modelPath;
+    }
+
+    /**
+     * Returns the translation to be applied to the ship model.
+     *
+     * @return the translation vector
+     */
+    public Vector3f getTranslation() {
+        return translation;
+    }
+}

Projekte/battleship/client/src/main/resources/Models/Ships/1/credit.txt

@@ -0,0 +1 @@
+"Fishing Boat" (https://skfb.ly/6UGtr) by JasperTobias is licensed under Creative Commons Attribution-NonCommercial (http://creativecommons.org/licenses/by-nc/4.0/).

Projekte/battleship/client/src/main/resources/Models/Ships/1/ship1.mtl

@@ -0,0 +1,22 @@
+# Blender 3.6.5 MTL File: 'None'
+# www.blender.org
+
+newmtl Boat
+Ns 0.000000
+Ka 1.000000 1.000000 1.000000
+Ks 0.500000 0.500000 0.500000
+Ke 0.000000 0.000000 0.000000
+Ni 1.450000
+d 1.000000
+illum 2
+map_Kd ship1_color.png
+
+newmtl Boat_2
+Ns 0.000000
+Ka 1.000000 1.000000 1.000000
+Ks 0.500000 0.500000 0.500000
+Ke 0.000000 0.000000 0.000000
+Ni 1.450000
+d 1.000000
+illum 2
+map_Kd ship1_color.png

Projekte/battleship/client/src/main/resources/Models/Ships/2/ship2.mtl

@@ -0,0 +1,82 @@
+# Blender 3.6.5 MTL File: 'None'
+# www.blender.org
+
+newmtl Battleship
+Ns 250.000000
+Ka 1.000000 1.000000 1.000000
+Ks 0.500000 0.500000 0.500000
+Ke 0.000000 0.000000 0.000000
+Ni 1.450000
+d 1.000000
+illum 2
+map_Kd ship2.jpg
+
+newmtl blinn2SG
+Ns 250.000000
+Ka 1.000000 1.000000 1.000000
+Kd 0.356400 0.356400 0.366253
+Ks 0.500000 0.500000 0.500000
+Ke 0.000000 0.000000 0.000000
+Ni 1.450000
+d 1.000000
+illum 2
+
+newmtl blinn3SG
+Ns 250.000000
+Ka 1.000000 1.000000 1.000000
+Kd 0.346704 0.346704 0.356400
+Ks 0.500000 0.500000 0.500000
+Ke 0.000000 0.000000 0.000000
+Ni 1.450000
+d 1.000000
+illum 2
+
+newmtl blinn4SG
+Ns 250.000000
+Ka 1.000000 1.000000 1.000000
+Kd 0.351533 0.346704 0.361307
+Ks 0.500000 0.500000 0.500000
+Ke 0.000000 0.000000 0.000000
+Ni 1.450000
+d 1.000000
+illum 2
+
+newmtl blinn5SG
+Ns 250.000000
+Ka 1.000000 1.000000 1.000000
+Kd 0.346704 0.346704 0.356400
+Ks 0.500000 0.500000 0.500000
+Ke 0.000000 0.000000 0.000000
+Ni 1.450000
+d 1.000000
+illum 2
+
+newmtl blinn6SG
+Ns 250.000000
+Ka 1.000000 1.000000 1.000000
+Kd 0.349118 0.346704 0.358854
+Ks 0.500000 0.500000 0.500000
+Ke 0.000000 0.000000 0.000000
+Ni 1.450000
+d 1.000000
+illum 2
+
+newmtl blinn7SG
+Ns 250.000000
+Ka 1.000000 1.000000 1.000000
+Kd 0.346704 0.346704 0.356400
+Ks 0.500000 0.500000 0.500000
+Ke 0.000000 0.000000 0.000000
+Ni 1.450000
+d 1.000000
+illum 2
+
+newmtl blinn8SG
+Ns 250.000000
+Ka 1.000000 1.000000 1.000000
+Kd 0.351533 0.346704 0.361307
+Ks 0.500000 0.500000 0.500000
+Ke 0.000000 0.000000 0.000000
+Ni 1.450000
+d 1.000000
+illum 2

Projekte/battleship/client/src/main/resources/Models/Ships/3/ship3.mtl

@@ -0,0 +1,15 @@
+# 3ds Max Wavefront OBJ Exporter v0.97b - (c)2007 guruware
+# File Created: 29.03.2012 14:25:39
+
+newmtl default
+	Ns 35.0000
+	Ni 1.5000
+	d 1.0000
+	Tr 0.0000
+	illum 2
+	Ka 1.0000 1.0000 1.0000
+	Kd 1.0000 1.0000 1.0000
+	Ks 0.5400 0.5400 0.5400
+	Ke 0.0000 0.0000 0.0000
+	map_Ka ship3_color.jpg
+	map_Kd ship3_color.jpg

Projekte/battleship/client/src/main/resources/Models/Ships/4/ship4.mtl

@@ -0,0 +1,13 @@
+# Blender 3.6.5 MTL File: 'None'
+# www.blender.org
+
+newmtl _King_George_V
+Ns 60.000008
+Ka 1.000000 1.000000 1.000000
+Ks 0.450000 0.450000 0.450000
+Ke 0.000000 0.000000 0.000000
+Ni 1.500000
+d 1.000000
+illum 2
+map_Kd ship4_color.jpg
+map_Bump -bm 1.000000 ship4_bump.jpg

Projekte/battleship/client/src/main/resources/Textures/Terrain/Water/README.txt

@@ -0,0 +1,4 @@
+based on:
+water 002
+by Katsukagi on 29/11/2018
+https://3dtextures.me/2018/11/29/water-002/

Projekte/battleship/client/src/main/resources/Textures/Terrain/Water/Water.j3m

@@ -0,0 +1,14 @@
+Material Water : Common/MatDefs/Light/Lighting.j3md {
+     MaterialParameters {
+         Shininess            : 64
+         DiffuseMap           : Repeat Textures/Terrain/Water/Water_002_COLOR.jpg
+         NormalMap            : Repeat Textures/Terrain/Water/Water_002_NORM.jpg
+         SpecularMap          : Repeat Textures/Terrain/Water/Water_002_ROUGH.jpg
+         ParallaxMap          : Repeat Textures/Terrain/Water/Water_002_DISP.png
+         // PackedNormalParallax : true
+         // UseMaterialColors : true
+         Ambient  : 0.5 0.5 0.5 1.0
+         Diffuse  : 1.0 1.0 1.0 1.0
+         Specular : 1.0 1.0 1.0 1.0
+     }
+}

Projekte/battleship/converter/build.gradle

@@ -0,0 +1,16 @@
+plugins {
+    id 'buildlogic.jme-application-conventions'
+}
+
+description = 'Battleship converter for resources'
+
+dependencies {
+    implementation libs.jme3.core
+
+    runtimeOnly libs.jme3.desktop
+    runtimeOnly libs.jme3.plugins
+}
+
+application {
+    mainClass = 'pp.battleship.exporter.ModelExporter'
+}

Projekte/battleship/converter/src/main/java/pp/battleship/exporter/ModelExporter.java

@@ -0,0 +1,69 @@
+////////////////////////////////////////
+// Programming project code
+// UniBw M, 2022, 2023, 2024
+// www.unibw.de/inf2
+// (c) Mark Minas (mark.minas@unibw.de)
+////////////////////////////////////////
+
+package pp.battleship.exporter;
+
+import com.jme3.app.SimpleApplication;
+import com.jme3.export.JmeExporter;
+import com.jme3.export.binary.BinaryExporter;
+import com.jme3.scene.Spatial;
+import com.jme3.system.JmeContext;
+import com.jme3.util.TangentBinormalGenerator;
+
+import java.io.File;
+import java.io.IOException;
+import java.lang.System.Logger;
+import java.lang.System.Logger.Level;
+
+/**
+ * This class transforms models into j3o format.
+ */
+public class ModelExporter extends SimpleApplication {
+    private static final Logger LOGGER = System.getLogger(ModelExporter.class.getName());
+
+    /**
+     * The main method of the converter
+     *
+     * @param args input args
+     */
+    public static void main(String[] args) {
+        ModelExporter application = new ModelExporter();
+        application.start(JmeContext.Type.Headless);
+    }
+
+    /**
+     * Overrides  {@link com.jme3.app.SimpleApplication#simpleInitApp()}.
+     * It initializes a simple app by exporting robots and rocks.
+     */
+    @Override
+    public void simpleInitApp() {
+        export("shell.obj", "shell.j3o"); //NON-NLS
+
+        stop();
+    }
+
+    /**
+     * Exports spatial into a file
+     *
+     * @param fileName       the file name of the model
+     * @param exportFileName the name of the file where the .j3o file is going to be stored
+     */
+    private void export(String fileName, String exportFileName) {
+        final File file = new File(exportFileName);
+        JmeExporter exporter = BinaryExporter.getInstance();
+        try {
+            final Spatial model = getAssetManager().loadModel(fileName);
+            TangentBinormalGenerator.generate(model);
+            exporter.save(model, file);
+        }
+        catch (IOException exception) {
+            LOGGER.log(Level.ERROR, "write to {0} failed", file); //NON-NLS
+            throw new RuntimeException(exception);
+        }
+        LOGGER.log(Level.INFO, "wrote file {0}", file); //NON-NLS
+    }
+}

Projekte/battleship/converter/src/main/resources/shell.mtl

@@ -0,0 +1,42 @@
+# Blender 3.6.5 MTL File: 'untitled.blend'
+# www.blender.org
+
+newmtl base
+Ns 467.358765
+Ka 0.636364 0.636364 0.636364
+Kd 0.000000 0.000000 0.000000
+Ks 0.500000 0.500000 0.500000
+Ke 0.000000 0.000000 0.000000
+Ni 1.000000
+d 1.000000
+illum 3
+
+newmtl ring
+Ns 467.358765
+Ka 0.636364 0.636364 0.636364
+Kd 0.031430 0.012811 0.000000
+Ks 0.500000 0.500000 0.500000
+Ke 0.000000 0.000000 0.000000
+Ni 1.000000
+d 1.000000
+illum 3
+
+newmtl tip
+Ns 467.358765
+Ka 0.636364 0.636364 0.636364
+Kd 0.032954 0.004269 0.000000
+Ks 0.500000 0.500000 0.500000
+Ke 0.000000 0.000000 0.000000
+Ni 1.000000
+d 1.000000
+illum 3
+
+newmtl top
+Ns 467.358765
+Ka 0.636364 0.636364 0.636364
+Kd 0.000489 0.006614 0.000950
+Ks 0.500000 0.500000 0.500000
+Ke 0.000000 0.000000 0.000000
+Ni 1.000000
+d 1.000000
+illum 3

Projekte/battleship/model/build.gradle

@@ -2,11 +2,11 @@
     id 'buildlogic.java-library-conventions'
 }
 
-description = 'MDGA common model'
+description = 'Battleship common model'
 
 dependencies {
     api project(":common")
     api libs.jme3.networking
     implementation libs.gson
     testImplementation libs.mockito.core
-}
+}

Projekte/battleship/model/src/main/java/pp/battleship/BattleshipConfig.java

@@ -0,0 +1,103 @@
+////////////////////////////////////////
+// Programming project code
+// UniBw M, 2022, 2023, 2024
+// www.unibw.de/inf2
+// (c) Mark Minas (mark.minas@unibw.de)
+////////////////////////////////////////
+
+package pp.battleship;
+
+import pp.util.config.Config;
+
+import java.util.Map;
+import java.util.TreeMap;
+
+import static java.lang.Math.max;
+
+/**
+ * Provides access to the configuration settings for the Battleship game.
+ * <p>
+ * This class allows for loading configuration settings from a properties file,
+ * including the server port, map dimensions, and the number of ships of various lengths.
+ * </p>
+ * <p>
+ * <b>Note:</b> Attributes of this class are not marked as {@code final} to allow
+ * for proper initialization when reading from a properties file.
+ * </p>
+ */
+public class BattleshipConfig extends Config {
+
+    /**
+     * The default port number for the Battleship server.
+     */
+    @Property("port")
+    private int port = 1234;
+
+    /**
+     * The width of the game map in terms of grid units.
+     */
+    @Property("map.width")
+    private int mapWidth = 10;
+
+    /**
+     * The height of the game map in terms of grid units.
+     */
+    @Property("map.height")
+    private int mapHeight = 10;
+
+    /**
+     * An array representing the number of ships available for each length.
+     * The index corresponds to the ship length minus one, and the value at each index
+     * is the number of ships of that length.
+     */
+    @Property("ship.nums")
+    private int[] shipNums = {4, 3, 2, 1};
+
+    /**
+     * Creates an instance of {@code BattleshipConfig} with default settings.
+     */
+    public BattleshipConfig() {
+        // Default constructor
+    }
+
+    /**
+     * Returns the port number configured for the Battleship server.
+     *
+     * @return the port number
+     */
+    public int getPort() {
+        return port;
+    }
+
+    /**
+     * Returns the width of the game map. The width is guaranteed to be at least 2 units.
+     *
+     * @return the width of the game map
+     */
+    public int getMapWidth() {
+        return max(mapWidth, 2);
+    }
+
+    /**
+     * Returns the height of the game map. The height is guaranteed to be at least 2 units.
+     *
+     * @return the height of the game map
+     */
+    public int getMapHeight() {
+        return max(mapHeight, 2);
+    }
+
+    /**
+     * Returns a map representing the number of ships for each length.
+     * The keys are ship lengths, and the values are the corresponding number of ships.
+     *
+     * @return a map of ship lengths to the number of ships
+     */
+    public Map<Integer, Integer> getShipNums() {
+        final TreeMap<Integer, Integer> ships = new TreeMap<>();
+        for (int i = 0; i < shipNums.length; i++)
+            if (shipNums[i] > 0)
+                ships.put(i + 1, shipNums[i]);
+        return ships;
+    }
+}

Projekte/battleship/model/src/main/java/pp/battleship/Resources.java

@@ -0,0 +1,40 @@
+////////////////////////////////////////
+// Programming project code
+// UniBw M, 2022, 2023, 2024
+// www.unibw.de/inf2
+// (c) Mark Minas (mark.minas@unibw.de)
+////////////////////////////////////////
+
+package pp.battleship;
+
+import java.util.ResourceBundle;
+
+/**
+ * Provides access to the resource bundle of the game.
+ *
+ * @see #BUNDLE
+ */
+public class Resources {
+    /**
+     * The resource bundle for the Battleship game.
+     */
+    public static final ResourceBundle BUNDLE = ResourceBundle.getBundle("battleship"); //NON-NLS
+
+    /**
+     * Gets a string for the given key from the resource bundle in {@linkplain #BUNDLE}.
+     *
+     * @param key the key for the desired string
+     * @return the string for the given key
+     * @throws NullPointerException               if {@code key} is {@code null}
+     * @throws java.util.MissingResourceException if no object for the given key can be found
+     * @throws ClassCastException                 if the object found for the given key is not a string
+     */
+    public static String lookup(String key) {
+        return BUNDLE.getString(key);
+    }
+
+    /**
+     * Private constructor to prevent instantiation.
+     */
+    private Resources() { /* do not instantiate */ }
+}

Projekte/battleship/model/src/main/java/pp/battleship/game/client/BattleState.java

@@ -0,0 +1,75 @@
+////////////////////////////////////////
+// Programming project code
+// UniBw M, 2022, 2023, 2024
+// www.unibw.de/inf2
+// (c) Mark Minas (mark.minas@unibw.de)
+////////////////////////////////////////
+
+package pp.battleship.game.client;
+
+import pp.battleship.message.client.ShootMessage;
+import pp.battleship.message.server.EffectMessage;
+import pp.battleship.model.IntPoint;
+import pp.battleship.model.Shell;
+import pp.battleship.model.ShipMap;
+import pp.battleship.notification.Sound;
+
+import java.lang.System.Logger.Level;
+
+/**
+ * Represents the state of the client where players take turns to attack each other's ships.
+ */
+class BattleState extends ClientState {
+    private boolean myTurn;
+
+    /**
+     * Constructs a new instance of {@link BattleState}.
+     *
+     * @param logic  the game logic
+     * @param myTurn true if it is my turn
+     */
+    public BattleState(ClientGameLogic logic, boolean myTurn) {
+        super(logic);
+        this.myTurn = myTurn;
+    }
+
+    @Override
+    public boolean showBattle() {
+        return true;
+    }
+
+    @Override
+    public void clickOpponentMap(IntPoint pos) {
+        if (!myTurn)
+            logic.setInfoText("wait.its.not.your.turn");
+        else if (logic.getOpponentMap().isValid(pos))
+            logic.send(new ShootMessage(pos));
+    }
+
+    /**
+     * Reports the effect of a shot based on the server message.
+     *
+     * @param msg the message containing the effect of the shot
+     */
+    @Override
+    public void receivedEffect(EffectMessage msg) {
+        ClientGameLogic.LOGGER.log(Level.INFO, "report effect: {0}", msg); //NON-NLS
+
+        myTurn = msg.isMyTurn();
+        logic.setInfoText(msg.getInfoTextKey());
+        Shell shell = new Shell(msg.getShot());
+        affectedMap(msg).add(shell);
+        logic.playSound(Sound.SHELL_FLYING);
+        logic.setState(new ShootingState(logic, shell, myTurn, msg));
+    }
+
+    /**
+     * Determines which map (own or opponent's) should be affected by the shot based on the message.
+     *
+     * @param msg the effect message received from the server
+     * @return the map (either the opponent's or player's own map) that is affected by the shot
+     */
+    private ShipMap affectedMap(EffectMessage msg) {
+        return msg.isOwnShot() ? logic.getOpponentMap() : logic.getOwnMap();
+    }
+}

Projekte/battleship/model/src/main/java/pp/battleship/game/client/BattleshipClient.java

@@ -0,0 +1,38 @@
+////////////////////////////////////////
+// Programming project code
+// UniBw M, 2022, 2023, 2024
+// www.unibw.de/inf2
+// (c) Mark Minas (mark.minas@unibw.de)
+////////////////////////////////////////
+
+package pp.battleship.game.client;
+
+import pp.battleship.game.singlemode.BattleshipClientConfig;
+
+/**
+ * Interface representing a Battleship client.
+ * Provides methods to access game logic, configuration, and to enqueue tasks.
+ */
+public interface BattleshipClient {
+
+    /**
+     * Returns the game logic associated with this client.
+     *
+     * @return the ClientGameLogic instance
+     */
+    ClientGameLogic getGameLogic();
+
+    /**
+     * Returns the configuration associated with this client.
+     *
+     * @return the BattleshipConfig instance
+     */
+    BattleshipClientConfig getConfig();
+
+    /**
+     * Enqueues a task to be executed by the client.
+     *
+     * @param runnable the task to be executed
+     */
+    void enqueue(Runnable runnable);
+}

Projekte/battleship/model/src/main/java/pp/battleship/game/client/ClientGameLogic.java

@@ -0,0 +1,355 @@
+////////////////////////////////////////
+// Programming project code
+// UniBw M, 2022, 2023, 2024
+// www.unibw.de/inf2
+// (c) Mark Minas (mark.minas@unibw.de)
+////////////////////////////////////////
+
+package pp.battleship.game.client;
+
+import pp.battleship.message.client.ClientMessage;
+import pp.battleship.message.server.EffectMessage;
+import pp.battleship.message.server.GameDetails;
+import pp.battleship.message.server.ServerInterpreter;
+import pp.battleship.message.server.StartBattleMessage;
+import pp.battleship.model.IntPoint;
+import pp.battleship.model.ShipMap;
+import pp.battleship.model.dto.ShipMapDTO;
+import pp.battleship.notification.ClientStateEvent;
+import pp.battleship.notification.GameEvent;
+import pp.battleship.notification.GameEventBroker;
+import pp.battleship.notification.GameEventListener;
+import pp.battleship.notification.InfoTextEvent;
+import pp.battleship.notification.Sound;
+import pp.battleship.notification.SoundEvent;
+
+import java.io.File;
+import java.io.IOException;
+import java.lang.System.Logger;
+import java.lang.System.Logger.Level;
+import java.util.ArrayList;
+import java.util.List;
+
+import static java.lang.Math.max;
+
+/**
+ * Controls the client-side game logic for Battleship.
+ * Manages the player's ship placement, interactions with the map, and response to server messages.
+ */
+public class ClientGameLogic implements ServerInterpreter, GameEventBroker {
+    static final Logger LOGGER = System.getLogger(ClientGameLogic.class.getName());
+    private final ClientSender clientSender;
+    private final List<GameEventListener> listeners = new ArrayList<>();
+    private GameDetails details;
+    private ShipMap ownMap;
+    private ShipMap harbor;
+    private ShipMap opponentMap;
+    private ClientState state = new InitialState(this);
+
+    /**
+     * Constructs a ClientGameLogic with the specified sender object.
+     *
+     * @param clientSender the object used to send messages to the server
+     */
+    public ClientGameLogic(ClientSender clientSender) {
+        this.clientSender = clientSender;
+    }
+
+    /**
+     * Returns the current state of the game logic.
+     */
+    ClientState getState() {
+        return state;
+    }
+
+    /**
+     * Sets the current state of the game logic.
+     *
+     * @param newState the new state to be set
+     */
+    void setState(ClientState newState) {
+        LOGGER.log(Level.DEBUG, "state transition {0} --> {1}", state.getName(), newState.getName()); //NON-NLS
+        state = newState;
+        notifyListeners(new ClientStateEvent());
+        state.entry();
+    }
+
+    /**
+     * Returns the game details.
+     *
+     * @return the game details
+     */
+    GameDetails getDetails() {
+        return details;
+    }
+
+    /**
+     * Returns the player's own map.
+     *
+     * @return the player's own map
+     */
+    public ShipMap getOwnMap() {
+        return ownMap;
+    }
+
+    /**
+     * Returns the opponent's map.
+     *
+     * @return the opponent's map
+     */
+    public ShipMap getOpponentMap() {
+        return opponentMap;
+    }
+
+    /**
+     * Returns the harbor map.
+     *
+     * @return the harbor map
+     */
+    public ShipMap getHarbor() {
+        return harbor;
+    }
+
+    /**
+     * Checks if the editor should be shown.
+     *
+     * @return true if the editor should be shown, false otherwise
+     */
+    public boolean showEditor() {
+        return state.showEditor();
+    }
+
+    /**
+     * Checks if the battle state should be shown.
+     *
+     * @return true if the battle state should be shown, false otherwise
+     */
+    public boolean showBattle() {
+        return state.showBattle();
+    }
+
+    /**
+     * Sets the game details provided by the server.
+     *
+     * @param details the game details including map size and ships
+     */
+    @Override
+    public void received(GameDetails details) {
+        state.receivedGameDetails(details);
+    }
+
+    /**
+     * Moves the preview ship to the specified position.
+     *
+     * @param pos the new position for the preview ship
+     */
+    public void movePreview(IntPoint pos) {
+        state.movePreview(pos);
+    }
+
+    /**
+     * Handles a click on the player's own map.
+     *
+     * @param pos the position where the click occurred
+     */
+    public void clickOwnMap(IntPoint pos) {
+        state.clickOwnMap(pos);
+    }
+
+    /**
+     * Handles a click on the harbor map.
+     *
+     * @param pos the position where the click occurred
+     */
+    public void clickHarbor(IntPoint pos) {
+        state.clickHarbor(pos);
+    }
+
+    /**
+     * Handles a click on the opponent's map.
+     *
+     * @param pos the position where the click occurred
+     */
+    public void clickOpponentMap(IntPoint pos) {
+        state.clickOpponentMap(pos);
+    }
+
+    /**
+     * Rotates the preview ship.
+     */
+    public void rotateShip() {
+        state.rotateShip();
+    }
+
+    /**
+     * Marks the player's map as finished.
+     */
+    public void mapFinished() {
+        state.mapFinished();
+    }
+
+    /**
+     * Checks if the player's map is complete (i.e., all ships are placed).
+     *
+     * @return true if all ships are placed, false otherwise
+     */
+    public boolean isMapComplete() {
+        return state.isMapComplete();
+    }
+
+    /**
+     * Checks if there is currently a preview ship.
+     *
+     * @return true if there is currently a preview ship, false otherwise
+     */
+    public boolean movingShip() {
+        return state.movingShip();
+    }
+
+    /**
+     * Starts the battle based on the server message.
+     *
+     * @param msg the message indicating whose turn it is to shoot
+     */
+    @Override
+    public void received(StartBattleMessage msg) {
+        state.receivedStartBattle(msg);
+    }
+
+    /**
+     * Reports the effect of a shot based on the server message.
+     *
+     * @param msg the message containing the effect of the shot
+     */
+    @Override
+    public void received(EffectMessage msg) {
+        state.receivedEffect(msg);
+    }
+
+    /**
+     * Initializes the player's own map, opponent's map, and harbor based on the game details.
+     *
+     * @param details the game details including map size and ships
+     */
+    void initializeMaps(GameDetails details) {
+        this.details = details;
+        final int numShips = details.getShipNums().values().stream().mapToInt(Integer::intValue).sum();
+        final int maxLength = details.getShipNums().keySet().stream().mapToInt(Integer::intValue).max().orElse(2);
+        ownMap = new ShipMap(details.getWidth(), details.getHeight(), this);
+        opponentMap = new ShipMap(details.getWidth(), details.getHeight(), this);
+        harbor = new ShipMap(max(maxLength, 2), max(numShips, details.getHeight()), this);
+    }
+
+    /**
+     * Sets the informational text to be displayed to the player.
+     *
+     * @param key the key for the info text
+     */
+    void setInfoText(String key) {
+        notifyListeners(new InfoTextEvent(key));
+    }
+
+    /**
+     * Emits an event to play the specified sound.
+     *
+     * @param sound the sound to be played.
+     */
+    public void playSound(Sound sound) {
+        notifyListeners(new SoundEvent(sound));
+    }
+
+    /**
+     * Loads a map from the specified file.
+     *
+     * @param file the file to load the map from
+     * @throws IOException if an I/O error occurs
+     */
+    public void loadMap(File file) throws IOException {
+        state.loadMap(file);
+    }
+
+    /**
+     * Checks if the player's own map may be loaded from a file.
+     *
+     * @return true if the own map may be loaded from file, false otherwise
+     */
+    public boolean mayLoadMap() {
+        return state.mayLoadMap();
+    }
+
+    /**
+     * Checks if the player's own map may be saved to a file.
+     *
+     * @return true if the own map may be saved to file, false otherwise
+     */
+    public boolean maySaveMap() {
+        return state.maySaveMap();
+    }
+
+    /**
+     * Saves the player's own map to the specified file.
+     *
+     * @param file the file to save the map to
+     * @throws IOException if the map cannot be saved in the current state
+     */
+    public void saveMap(File file) throws IOException {
+        if (ownMap != null && maySaveMap())
+            new ShipMapDTO(ownMap).saveTo(file);
+        else
+            throw new IOException("You are not allowed to save the map in this state of the game");
+    }
+
+    /**
+     * Sends a message to the server.
+     *
+     * @param msg the message to be sent
+     */
+    void send(ClientMessage msg) {
+        if (clientSender == null)
+            LOGGER.log(Level.ERROR, "trying to send {0} with sender==null", msg); //NON-NLS
+        else
+            clientSender.send(msg);
+    }
+
+    /**
+     * Adds a listener to receive game events.
+     *
+     * @param listener the listener to add
+     */
+    public synchronized void addListener(GameEventListener listener) {
+        listeners.add(listener);
+    }
+
+    /**
+     * Removes a listener from receiving game events.
+     *
+     * @param listener the listener to remove
+     */
+    public synchronized void removeListener(GameEventListener listener) {
+        listeners.remove(listener);
+    }
+
+    /**
+     * Notifies all listeners of a game event.
+     *
+     * @param event the game event to notify listeners of
+     */
+    @Override
+    public void notifyListeners(GameEvent event) {
+        final List<GameEventListener> copy;
+        synchronized (this) {
+            copy = new ArrayList<>(listeners);
+        }
+        for (GameEventListener listener : copy)
+            event.notifyListener(listener);
+    }
+
+    /**
+     * Called once per frame by the update loop.
+     *
+     * @param delta time in seconds since the last update call
+     */
+    public void update(float delta) {
+        state.update(delta);
+    }
+}

Projekte/battleship/model/src/main/java/pp/battleship/game/client/ClientSender.java

@@ -0,0 +1,22 @@
+////////////////////////////////////////
+// Programming project code
+// UniBw M, 2022, 2023, 2024
+// www.unibw.de/inf2
+// (c) Mark Minas (mark.minas@unibw.de)
+////////////////////////////////////////
+
+package pp.battleship.game.client;
+
+import pp.battleship.message.client.ClientMessage;
+
+/**
+ * Interface for sending messages to the server.
+ */
+public interface ClientSender {
+    /**
+     * Send the specified message to the server.
+     *
+     * @param message the message
+     */
+    void send(ClientMessage message);
+}

Projekte/battleship/model/src/main/java/pp/battleship/game/client/ClientState.java

@@ -0,0 +1,202 @@
+////////////////////////////////////////
+// Programming project code
+// UniBw M, 2022, 2023, 2024
+// www.unibw.de/inf2
+// (c) Mark Minas (mark.minas@unibw.de)
+////////////////////////////////////////
+
+package pp.battleship.game.client;
+
+import pp.battleship.message.server.EffectMessage;
+import pp.battleship.message.server.GameDetails;
+import pp.battleship.message.server.StartBattleMessage;
+import pp.battleship.model.IntPoint;
+
+import java.io.File;
+import java.io.IOException;
+import java.lang.System.Logger.Level;
+
+/**
+ * Defines the behavior and state transitions for the client-side game logic.
+ * Different states of the game logic implement this interface to handle various game events and actions.
+ */
+abstract class ClientState {
+    /**
+     * The game logic object.
+     */
+    final ClientGameLogic logic;
+
+    /**
+     * Constructs a client state of the specified game logic.
+     *
+     * @param logic the game logic
+     */
+    ClientState(ClientGameLogic logic) {
+        this.logic = logic;
+    }
+
+    /**
+     * Method to be overridden by subclasses for post-transition initialization.
+     * By default, it does nothing, but it can be overridden in derived states.
+     */
+    void entry() {
+        // Default implementation does nothing
+    }
+
+    /**
+     * Returns the name of the current state.
+     *
+     * @return the name of the current state
+     */
+    String getName() {
+        return getClass().getSimpleName();
+    }
+
+    /**
+     * Checks if the editor should be shown.
+     *
+     * @return true if the editor should be shown, false otherwise
+     */
+    boolean showEditor() {
+        return false;
+    }
+
+    /**
+     * Checks if the battle state should be shown.
+     *
+     * @return true if the battle state should be shown, false otherwise
+     */
+    boolean showBattle() {
+        return false;
+    }
+
+    /**
+     * Checks if the player's map is complete (i.e., all ships are placed).
+     *
+     * @return true if all ships are placed, false otherwise
+     */
+    boolean isMapComplete() {
+        return false;
+    }
+
+    /**
+     * Checks if there is currently a preview ship.
+     *
+     * @return true if there is currently a preview ship, false otherwise
+     */
+    boolean movingShip() {
+        return false;
+    }
+
+    /**
+     * Handles a click on the player's own map.
+     *
+     * @param pos the position where the click occurred
+     */
+    void clickOwnMap(IntPoint pos) {
+        ClientGameLogic.LOGGER.log(Level.DEBUG, "clickOwnMap has no effect in {0}", getName()); //NON-NLS
+    }
+
+    /**
+     * Handles a click on the harbor map.
+     *
+     * @param pos the position where the click occurred
+     */
+    void clickHarbor(IntPoint pos) {
+        ClientGameLogic.LOGGER.log(Level.DEBUG, "clickHarbor has no effect in {0}", getName()); //NON-NLS
+    }
+
+    /**
+     * Handles a click on the opponent's map.
+     *
+     * @param pos the position where the click occurred
+     */
+    void clickOpponentMap(IntPoint pos) {
+        ClientGameLogic.LOGGER.log(Level.DEBUG, "clickOpponentMap has no effect in {0}", getName()); //NON-NLS
+    }
+
+    /**
+     * Moves the preview ship to the specified position.
+     *
+     * @param pos the new position for the preview ship
+     */
+    void movePreview(IntPoint pos) {
+        ClientGameLogic.LOGGER.log(Level.DEBUG, "movePreview has no effect in {0}", getName()); //NON-NLS
+    }
+
+    /**
+     * Rotates the preview ship.
+     */
+    void rotateShip() {
+        ClientGameLogic.LOGGER.log(Level.DEBUG, "rotateShip has no effect in {0}", getName()); //NON-NLS
+    }
+
+    /**
+     * The user has marked the map as finished.
+     */
+    void mapFinished() {
+        ClientGameLogic.LOGGER.log(Level.ERROR, "mapFinished not allowed in {0}", getName()); //NON-NLS
+    }
+
+    /**
+     * Sets the game details provided by the server.
+     *
+     * @param details the game details including map size and ships
+     */
+    void receivedGameDetails(GameDetails details) {
+        ClientGameLogic.LOGGER.log(Level.ERROR, "receivedGameDetails not allowed in {0}", getName()); //NON-NLS
+    }
+
+    /**
+     * Starts the battle based on the server message.
+     *
+     * @param msg the message indicating whose turn it is to shoot
+     */
+    void receivedStartBattle(StartBattleMessage msg) {
+        ClientGameLogic.LOGGER.log(Level.ERROR, "receivedStartBattle not allowed in {0}", getName()); //NON-NLS
+    }
+
+    /**
+     * Reports the effect of a shot based on the server message.
+     *
+     * @param msg the message containing the effect of the shot
+     */
+    void receivedEffect(EffectMessage msg) {
+        ClientGameLogic.LOGGER.log(Level.ERROR, "receivedEffect not allowed in {0}", getName()); //NON-NLS
+    }
+
+    /**
+     * Loads a map from the specified file.
+     *
+     * @param file the file to load the map from
+     * @throws IOException if the map cannot be loaded in the current state
+     */
+    void loadMap(File file) throws IOException {
+        throw new IOException("You are not allowed to load a map in this state of the game");
+    }
+
+    /**
+     * Checks if the own map may be loaded from file.
+     *
+     * @return true if the own map may be loaded from file, false otherwise
+     */
+    boolean mayLoadMap() {
+        return false;
+    }
+
+    /**
+     * Checks if the own map may be saved to file.
+     *
+     * @return true if the own map may be saved to file, false otherwise
+     */
+    boolean maySaveMap() {
+        return true;
+    }
+
+    /**
+     * Called once per frame by the update loop if this state is active.
+     *
+     * @param delta time in seconds since the last update call
+     */
+    void update(float delta) { /* do nothing by default */ }
+}

Projekte/battleship/model/src/main/java/pp/battleship/game/client/EditorState.java

@@ -0,0 +1,267 @@
+////////////////////////////////////////
+// Programming project code
+// UniBw M, 2022, 2023, 2024
+// www.unibw.de/inf2
+// (c) Mark Minas (mark.minas@unibw.de)
+////////////////////////////////////////
+
+package pp.battleship.game.client;
+
+import pp.battleship.message.client.MapMessage;
+import pp.battleship.model.Battleship;
+import pp.battleship.model.IntPoint;
+import pp.battleship.model.ShipMap;
+import pp.battleship.model.dto.ShipMapDTO;
+
+import java.io.File;
+import java.io.IOException;
+import java.lang.System.Logger.Level;
+
+import static pp.battleship.Resources.lookup;
+import static pp.battleship.model.Battleship.Status.INVALID_PREVIEW;
+import static pp.battleship.model.Battleship.Status.NORMAL;
+import static pp.battleship.model.Battleship.Status.VALID_PREVIEW;
+import static pp.battleship.model.Rotation.RIGHT;
+
+/**
+ * Represents the state of the client setting up the ship map.
+ */
+class EditorState extends ClientState {
+    private Battleship preview;
+    private Battleship selectedInHarbor;
+
+    /**
+     * Constructs a new EditorState with the specified ClientGameLogic.
+     *
+     * @param logic the ClientGameLogic associated with this state
+     */
+    public EditorState(ClientGameLogic logic) {
+        super(logic);
+    }
+
+    /**
+     * Returns true to indicate that the editor should be shown.
+     *
+     * @return true if the editor should be shown
+     */
+    @Override
+    public boolean showEditor() {
+        return true;
+    }
+
+    /**
+     * Moves the preview ship to the specified position.
+     *
+     * @param pos the new position for the preview ship
+     */
+    @Override
+    public void movePreview(IntPoint pos) {
+        ClientGameLogic.LOGGER.log(Level.DEBUG, "move preview to {0}", pos); //NON-NLS
+        if (preview == null || !ownMap().isValid(pos)) return;
+        preview.moveTo(pos);
+        setPreviewStatus(preview);
+        ownMap().remove(preview);
+        ownMap().add(preview);
+    }
+
+    /**
+     * Handles a click on the player's own map.
+     *
+     * @param pos the position where the click occurred
+     */
+    @Override
+    public void clickOwnMap(IntPoint pos) {
+        ClientGameLogic.LOGGER.log(Level.DEBUG, "click at {0} in own map", pos); //NON-NLS
+        if (!ownMap().isValid(pos)) return;
+        if (preview == null)
+            modifyShip(pos);
+        else
+            placeShip(pos);
+    }
+
+    /**
+     * Modifies a ship on the map at the specified position.
+     *
+     * @param cursor the position of the ship to modify
+     */
+    private void modifyShip(IntPoint cursor) {
+        preview = ownMap().findShipAt(cursor);
+        if (preview == null)
+            return;
+        preview.moveTo(cursor);
+        setPreviewStatus(preview);
+        ownMap().remove(preview);
+        ownMap().add(preview);
+        selectedInHarbor = new Battleship(preview.getLength(), 0, freeY(), RIGHT);
+        selectedInHarbor.setStatus(VALID_PREVIEW);
+        harbor().add(selectedInHarbor);
+    }
+
+    /**
+     * Places the preview ship at the specified position.
+     *
+     * @param cursor the position to place the ship
+     */
+    private void placeShip(IntPoint cursor) {
+        ownMap().remove(preview);
+        preview.moveTo(cursor);
+        if (ownMap().isValid(preview)) {
+            preview.setStatus(NORMAL);
+            ownMap().add(preview);
+            harbor().remove(selectedInHarbor);
+            preview = null;
+            selectedInHarbor = null;
+        }
+        else {
+            preview.setStatus(INVALID_PREVIEW);
+            ownMap().add(preview);
+        }
+    }
+
+    /**
+     * Handles a click on the harbor map.
+     *
+     * @param pos the position where the click occurred
+     */
+    @Override
+    public void clickHarbor(IntPoint pos) {
+        ClientGameLogic.LOGGER.log(Level.DEBUG, "click at {0} in harbor", pos); //NON-NLS
+        if (!harbor().isValid(pos)) return;
+        final Battleship shipAtCursor = harbor().findShipAt(pos);
+        if (preview != null) {
+            ownMap().remove(preview);
+            selectedInHarbor.setStatus(NORMAL);
+            harbor().remove(selectedInHarbor);
+            harbor().add(selectedInHarbor);
+            preview = null;
+            selectedInHarbor = null;
+        }
+        else if (shipAtCursor != null) {
+            selectedInHarbor = shipAtCursor;
+            selectedInHarbor.setStatus(VALID_PREVIEW);
+            harbor().remove(selectedInHarbor);
+            harbor().add(selectedInHarbor);
+            preview = new Battleship(selectedInHarbor.getLength(), 0, 0, RIGHT);
+            setPreviewStatus(preview);
+            ownMap().add(preview);
+        }
+    }
+
+    /**
+     * Rotates the preview ship.
+     */
+    @Override
+    public void rotateShip() {
+        ClientGameLogic.LOGGER.log(Level.DEBUG, "pushed rotate"); //NON-NLS
+        if (preview == null) return;
+        preview.rotated();
+        ownMap().remove(preview);
+        ownMap().add(preview);
+    }
+
+    /**
+     * Finds a free position in the harbor to place a ship.
+     *
+     * @return the y coordinate of a free position in the harbor
+     */
+    private int freeY() {
+        for (int i = 0; i < harbor().getHeight(); i++)
+            if (harbor().findShipAt(0, i) == null)
+                return i;
+        throw new RuntimeException("Cannot find a free slot in harbor");
+    }
+
+    /**
+     * Updates the status of the specified ship based on its validity.
+     */
+    private void setPreviewStatus(Battleship ship) {
+        ship.setStatus(ownMap().isValid(ship) ? VALID_PREVIEW : INVALID_PREVIEW);
+    }
+
+    /**
+     * The user has marked the map as finished.
+     */
+    @Override
+    public void mapFinished() {
+        if (!harbor().getItems().isEmpty()) return;
+        logic.send(new MapMessage(ownMap().getRemainingShips()));
+        logic.setInfoText("wait.for.opponent");
+        logic.setState(new WaitState(logic));
+    }
+
+    /**
+     * Checks if the player's map is complete (i.e., all ships are placed).
+     *
+     * @return true if all ships are placed, false otherwise
+     */
+    @Override
+    public boolean isMapComplete() {
+        return harbor().getItems().isEmpty();
+    }
+
+    /**
+     * Checks if there is currently a preview ship.
+     *
+     * @return true if there is currently a preview ship, false otherwise
+     */
+    @Override
+    public boolean movingShip() {
+        return preview != null;
+    }
+
+    /**
+     * Returns the player's own map.
+     *
+     * @return the player's own map
+     */
+    private ShipMap ownMap() {
+        return logic.getOwnMap();
+    }
+
+    /**
+     * Returns the harbor map.
+     *
+     * @return the harbor map
+     */
+    private ShipMap harbor() {
+        return logic.getHarbor();
+    }
+
+    /**
+     * Loads a map from the specified file.
+     *
+     * @param file the file to load the map from
+     * @throws IOException if the map cannot be loaded
+     */
+    @Override
+    public void loadMap(File file) throws IOException {
+        final ShipMapDTO dto = ShipMapDTO.loadFrom(file);
+        if (!dto.fits(logic.getDetails()))
+            throw new IOException(lookup("map.doesnt.fit"));
+        ownMap().clear();
+        dto.getShips().forEach(ownMap()::add);
+        harbor().clear();
+        preview = null;
+        selectedInHarbor = null;
+    }
+
+    /**
+     * Checks if the player's own map may be loaded from a file.
+     *
+     * @return true if the own map may be loaded from file, false otherwise
+     */
+    @Override
+    public boolean mayLoadMap() {
+        return true;
+    }
+
+    /**
+     * Checks if the player's own map may be saved to a file.
+     *
+     * @return true if the own map may be saved to file, false otherwise
+     */
+    @Override
+    public boolean maySaveMap() {
+        return harbor().getItems().isEmpty();
+    }
+}

Projekte/battleship/model/src/main/java/pp/battleship/game/client/GameOverState.java

@@ -0,0 +1,32 @@
+////////////////////////////////////////
+// Programming project code
+// UniBw M, 2022, 2023, 2024
+// www.unibw.de/inf2
+// (c) Mark Minas (mark.minas@unibw.de)
+////////////////////////////////////////
+
+package pp.battleship.game.client;
+
+/**
+ * Represents the state of the client when the game is over.
+ */
+class GameOverState extends ClientState {
+    /**
+     * Constructs a new instance of GameOverState.
+     *
+     * @param logic the client game logic
+     */
+    GameOverState(ClientGameLogic logic) {
+        super(logic);
+    }
+
+    /**
+     * Returns true to indicate that the battle state should be shown.
+     *
+     * @return true if the battle state should be shown
+     */
+    @Override
+    public boolean showBattle() {
+        return true;
+    }
+}

Projekte/battleship/model/src/main/java/pp/battleship/game/client/InitialState.java

@@ -0,0 +1,65 @@
+////////////////////////////////////////
+// Programming project code
+// UniBw M, 2022, 2023, 2024
+// www.unibw.de/inf2
+// (c) Mark Minas (mark.minas@unibw.de)
+////////////////////////////////////////
+
+package pp.battleship.game.client;
+
+import pp.battleship.message.server.GameDetails;
+import pp.battleship.model.Battleship;
+import pp.battleship.model.Rotation;
+
+import java.util.Map.Entry;
+
+/**
+ * Represents the state of the client waiting for the
+ * {@linkplain pp.battleship.message.server.GameDetails}
+ * from the server.
+ */
+class InitialState extends ClientState {
+    /**
+     * Creates a new initial state.
+     *
+     * @param logic the game logic
+     */
+    public InitialState(ClientGameLogic logic) {
+        super(logic);
+    }
+
+    /**
+     * Sets the game details provided by the server.
+     *
+     * @param details the game details including map size and ships
+     */
+    @Override
+    public void receivedGameDetails(GameDetails details) {
+        logic.initializeMaps(details);
+        fillHarbor(details);
+        logic.setInfoText(details.getInfoTextKey());
+        logic.setState(new EditorState(logic));
+    }
+
+    /**
+     * Fills the harbor with ships as specified by the game details.
+     *
+     * @param details the game details including map size and ships
+     */
+    private void fillHarbor(GameDetails details) {
+        int y = 0;
+        for (Entry<Integer, Integer> entry : details.getShipNums().entrySet()) {
+            final int len = entry.getKey();
+            final int num = entry.getValue();
+            for (int i = 0; i < num; i++) {
+                final Battleship ship = new Battleship(len, 0, y++, Rotation.RIGHT);
+                logic.getHarbor().add(ship);
+            }
+        }
+    }
+
+    @Override
+    public boolean maySaveMap() {
+        return false;
+    }
+}

Projekte/battleship/model/src/main/java/pp/battleship/game/client/ServerConnection.java

@@ -0,0 +1,32 @@
+////////////////////////////////////////
+// Programming project code
+// UniBw M, 2022, 2023, 2024
+// www.unibw.de/inf2
+// (c) Mark Minas (mark.minas@unibw.de)
+////////////////////////////////////////
+
+package pp.battleship.game.client;
+
+/**
+ * Interface representing a connection to the server.
+ * Extends ClientSender to allow sending messages to the server.
+ */
+public interface ServerConnection extends ClientSender {
+
+    /**
+     * Checks if the client is currently connected to the server.
+     *
+     * @return true if connected, false otherwise.
+     */
+    boolean isConnected();
+
+    /**
+     * Establishes a connection to the server.
+     */
+    void connect();
+
+    /**
+     * Disconnects from the server.
+     */
+    void disconnect();
+}

Projekte/battleship/model/src/main/java/pp/battleship/game/client/ShootingState.java

@@ -0,0 +1,114 @@
+package pp.battleship.game.client;
+
+import pp.battleship.message.client.AnimationFinishedMessage;
+import pp.battleship.message.server.EffectMessage;
+import pp.battleship.model.Battleship;
+import pp.battleship.model.Shell;
+import pp.battleship.model.ShipMap;
+import pp.battleship.notification.Sound;
+
+/**
+ * Represents the shooting state of the game where a shell is fired at the opponent.
+ */
+public class ShootingState extends ClientState {
+    private float shootValue;
+    private final static float SHELL_SPEED = 0.3f;
+    private final Shell shell;
+    private final boolean myTurn;
+    private final EffectMessage msg;
+
+    /**
+     * Constructs a shooting state with the specified game logic.
+     *
+     * @param logic  the game logic
+     * @param shell  the shell being shot
+     * @param myTurn indicates if it is the player's turn
+     * @param msg    the effect message associated with the shooting action
+     */
+    public ShootingState(ClientGameLogic logic, Shell shell, boolean myTurn, EffectMessage msg) {
+        super(logic);
+        this.msg = msg;
+        this.myTurn = myTurn;
+        this.shell = shell;
+        this.shootValue = 0;
+        shell.move(shootValue);
+    }
+
+    @Override
+    public boolean showBattle() {
+        return true;
+    }
+
+    /**
+     * Updates the shooting state by moving the shell based on the elapsed time.
+     *
+     * @param delta the time in seconds since the last update
+     */
+    @Override
+    void update(float delta) {
+        super.update(delta);
+        if (shootValue > 1) {
+            endState();
+        }
+        else {
+            shootValue += delta * SHELL_SPEED;
+            shell.move(shootValue);
+        }
+    }
+
+    /**
+     * Ends the shooting state and processes the effects of the shot.
+     */
+    private void endState() {
+        playSound(msg);
+        affectedMap(msg).add(msg.getShot());
+        affectedMap(msg).remove(shell);
+
+        if (destroyedOpponentShip(msg))
+            logic.getOpponentMap().add(msg.getDestroyedShip());
+        if (msg.isGameOver()) {
+            for (Battleship ship : msg.getRemainingOpponentShips()) {
+                logic.getOpponentMap().add(ship);
+            }
+            logic.setState(new GameOverState(logic));
+            return;
+        }
+        logic.send(new AnimationFinishedMessage());
+        logic.setState(new BattleState(logic, myTurn));
+    }
+
+    /**
+     * Checks if an opponent's ship was destroyed by the shot.
+     *
+     * @param msg the effect message containing the shot details
+     * @return true if an opponent's ship was destroyed, false otherwise
+     */
+    private boolean destroyedOpponentShip(EffectMessage msg) {
+        return msg.getDestroyedShip() != null && msg.isOwnShot();
+    }
+
+    /**
+     * Retrieves the affected map based on whether the shot was owned by the player or the opponent.
+     *
+     * @param msg the effect message containing shot details
+     * @return the ShipMap that was affected by the shot
+     */
+    private ShipMap affectedMap(EffectMessage msg) {
+        return msg.isOwnShot() ? logic.getOpponentMap() : logic.getOwnMap();
+    }
+
+    /**
+     * Plays a sound based on the outcome of the shot. Different sounds are played for a miss, hit,
+     * or destruction of a ship.
+     *
+     * @param msg the effect message containing the result of the shot
+     */
+    private void playSound(EffectMessage msg) {
+        if (!msg.getShot().isHit())
+            logic.playSound(Sound.SPLASH);
+        else if (msg.getDestroyedShip() == null)
+            logic.playSound(Sound.EXPLOSION);
+        else
+            logic.playSound(Sound.DESTROYED_SHIP);
+    }
+}

Projekte/battleship/model/src/main/java/pp/battleship/game/client/WaitState.java

@@ -0,0 +1,49 @@
+////////////////////////////////////////
+// Programming project code
+// UniBw M, 2022, 2023, 2024
+// www.unibw.de/inf2
+// (c) Mark Minas (mark.minas@unibw.de)
+////////////////////////////////////////
+
+package pp.battleship.game.client;
+
+import pp.battleship.message.server.GameDetails;
+import pp.battleship.message.server.StartBattleMessage;
+
+import java.lang.System.Logger.Level;
+
+class WaitState extends ClientState {
+
+    /**
+     * Creates a new instance of {@link WaitState}.
+     *
+     * @param logic the game logic
+     */
+    public WaitState(ClientGameLogic logic) {
+        super(logic);
+    }
+
+    @Override
+    public boolean showEditor() {
+        return true;
+    }
+
+    /**
+     * Starts the battle based on the server message.
+     *
+     * @param msg the message indicating whose turn it is to shoot
+     */
+    @Override
+    public void receivedStartBattle(StartBattleMessage msg) {
+        ClientGameLogic.LOGGER.log(Level.INFO, "start battle, {0} turn", msg.isMyTurn() ? "my" : "other's"); //NON-NLS
+        logic.setInfoText(msg.getInfoTextKey());
+        logic.setState(new BattleState(logic, msg.isMyTurn()));
+    }
+
+    @Override
+    public void receivedGameDetails(GameDetails details) {
+        ClientGameLogic.LOGGER.log(Level.WARNING, "Invalid Map"); //NON-NLS
+        logic.setInfoText("invalid.map");
+        logic.setState(new EditorState(logic));
+    }
+}

Projekte/battleship/model/src/main/java/pp/battleship/game/server/Player.java

@@ -0,0 +1,54 @@
+////////////////////////////////////////
+// Programming project code
+// UniBw M, 2022, 2023, 2024
+// www.unibw.de/inf2
+// (c) Mark Minas (mark.minas@unibw.de)
+////////////////////////////////////////
+
+package pp.battleship.game.server;
+
+import pp.battleship.BattleshipConfig;
+import pp.battleship.model.ShipMap;
+
+/**
+ * Class representing a player
+ */
+public class Player {
+    private final ShipMap map;
+    private final String name;
+    private final int id;
+
+    /**
+     * Creates new Player
+     *
+     * @param id     the id of the connection to the client represented by this player
+     * @param name   the human-readable name of this player
+     * @param config model holding the player
+     */
+    Player(int id, String name, BattleshipConfig config) {
+        this.id = id;
+        this.name = name;
+        map = new ShipMap(config.getMapWidth(), config.getMapHeight(), null);
+    }
+
+    /**
+     * Returns the id of the connection to the client represented by this player.
+     *
+     * @return the id
+     */
+    public int getId() {
+        return id;
+    }
+
+    @Override
+    public String toString() {
+        return String.format("Player(%s,%s)", name, id); //NON-NLS
+    }
+
+    /**
+     * @return map containing own ships and shots
+     */
+    public ShipMap getMap() {
+        return map;
+    }
+}

Projekte/battleship/model/src/main/java/pp/battleship/game/server/ServerGameLogic.java

@@ -0,0 +1,291 @@
+////////////////////////////////////////
+// Programming project code
+// UniBw M, 2022, 2023, 2024
+// www.unibw.de/inf2
+// (c) Mark Minas (mark.minas@unibw.de)
+////////////////////////////////////////
+
+package pp.battleship.game.server;
+
+import pp.battleship.BattleshipConfig;
+import pp.battleship.message.client.AnimationFinishedMessage;
+import pp.battleship.message.client.ClientInterpreter;
+import pp.battleship.message.client.MapMessage;
+import pp.battleship.message.client.ShootMessage;
+import pp.battleship.message.server.EffectMessage;
+import pp.battleship.message.server.GameDetails;
+import pp.battleship.message.server.ServerMessage;
+import pp.battleship.message.server.StartBattleMessage;
+import pp.battleship.model.Battleship;
+import pp.battleship.model.IntPoint;
+
+import java.lang.System.Logger;
+import java.lang.System.Logger.Level;
+import java.util.ArrayList;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+
+/**
+ * Controls the server-side game logic for Battleship.
+ * Manages game states, player interactions, and message handling.
+ */
+public class ServerGameLogic implements ClientInterpreter {
+    private static final Logger LOGGER = System.getLogger(ServerGameLogic.class.getName());
+
+    private final BattleshipConfig config;
+    private final List<Player> players = new ArrayList<>(2);
+    private final Set<Player> readyPlayers = new HashSet<>();
+    private final ServerSender serverSender;
+    private Player activePlayer;
+    private ServerState state = ServerState.WAIT;
+    private Set<Player> waitPlayers = new HashSet<>();
+
+    /**
+     * Constructs a ServerGameLogic with the specified sender and configuration.
+     *
+     * @param serverSender the sender used to send messages to clients
+     * @param config       the game configuration
+     */
+    public ServerGameLogic(ServerSender serverSender, BattleshipConfig config) {
+        this.serverSender = serverSender;
+        this.config = config;
+    }
+
+    /**
+     * Returns the  state of the game.
+     */
+    ServerState getState() {
+        return state;
+    }
+
+    /**
+     * Sets the new state of the game and logs the state transition.
+     *
+     * @param newState the new state to set
+     */
+    void setState(ServerState newState) {
+        LOGGER.log(Level.DEBUG, "state transition {0} --> {1}", state, newState); //NON-NLS
+        state = newState;
+    }
+
+    /**
+     * Returns the opponent of the specified player.
+     *
+     * @param p the player
+     * @return the opponent of the player
+     */
+    Player getOpponent(Player p) {
+        if (players.size() != 2)
+            throw new RuntimeException("trying to find opponent without having 2 players");
+        final int index = players.indexOf(p);
+        if (index < 0)
+            throw new RuntimeException("Nonexistent player " + p);
+        return players.get(1 - index);
+    }
+
+    /**
+     * Returns the player representing the client with the specified connection ID.
+     *
+     * @param id the ID of the client
+     * @return the player associated with the client ID, or null if not found
+     */
+    public Player getPlayerById(int id) {
+        for (Player player : players)
+            if (player.getId() == id)
+                return player;
+        LOGGER.log(Level.ERROR, "no player found with connection {0}", id); //NON-NLS
+        return null;
+    }
+
+    /**
+     * Sends a message to the specified player.
+     *
+     * @param player the player to send the message to
+     * @param msg    the message to send
+     */
+    void send(Player player, ServerMessage msg) {
+        LOGGER.log(Level.INFO, "sending to {0}: {1}", player, msg); //NON-NLS
+        serverSender.send(player.getId(), msg);
+    }
+
+    /**
+     * Adds a new player to the game if there are less than two players.
+     * Transitions the state to SET_UP if two players are present.
+     *
+     * @param id the connection ID of the new player
+     * @return the player added to the game, or null if the game is not in the right state
+     */
+    public Player addPlayer(int id) {
+        if (state != ServerState.WAIT) {
+            LOGGER.log(Level.ERROR, "addPlayer not allowed in {0}", state); //NON-NLS
+            return null;
+        }
+        final int n = players.size() + 1;
+        final Player player = new Player(id, "player " + n, config); //NON-NLS
+        LOGGER.log(Level.INFO, "adding {0}", player); //NON-NLS
+        players.add(player);
+        if (players.size() == 2) {
+            activePlayer = players.get(0);
+            for (Player p : players)
+                send(p, new GameDetails(config));
+            setState(ServerState.SET_UP);
+        }
+        return player;
+    }
+
+    /**
+     * Handles the reception of a MapMessage.
+     *
+     * @param msg  the received MapMessage
+     * @param from the ID of the sender client
+     */
+    @Override
+    public void received(MapMessage msg, int from) {
+        if (state != ServerState.SET_UP)
+            LOGGER.log(Level.ERROR, "playerReady not allowed in {0}", state); //NON-NLS
+        else {
+            if (checkMap(msg.getShips())) {
+                playerReady(getPlayerById(from), msg.getShips());
+            }
+            else {
+                LOGGER.log(Level.WARNING, "Invalid Map sent from player {0}", from); //NON-NLS
+                send(players.get(from), new GameDetails(config));
+            }
+        }
+    }
+
+    /**
+     * Handles the reception of a AnimationFinishedMessage.
+     *
+     * @param msg  the received MapMessage
+     * @param from the ID of the sender client
+     */
+    @Override
+    public void received(AnimationFinishedMessage msg, int from) {
+        if (state != ServerState.ANIMATION) {
+            LOGGER.log(Level.ERROR, "animation finished not allowed in {0}", state);
+        }
+        else {
+            LOGGER.log(Level.DEBUG, "anim received from {0}", getPlayerById(from));
+            Player player = getPlayerById(from);
+            if (!waitPlayers.add(player)) {
+                LOGGER.log(Level.ERROR, "{0} already sent animation finished", player); //NON-NLS
+                return;
+            }
+            if (waitPlayers.size() == 2) {
+                waitPlayers = new HashSet<>();
+                setState(ServerState.BATTLE);
+            }
+        }
+    }
+
+    /**
+     * Validates the placement of battleships on the map.
+     * Ensures that:
+     * <ul>
+     *   <li>The number of ships matches the configuration.</li>
+     *   <li>Ships are within the map's boundaries.</li>
+     *   <li>Ships do not overlap.</li>
+     * </ul>
+     *
+     * @param ships the list of {@link Battleship} objects to validate
+     * @return {@code true} if all ships are placed correctly; {@code false} otherwise
+     */
+    private boolean checkMap(List<Battleship> ships) {
+        int numShips = config.getShipNums().values().stream().mapToInt(Integer::intValue).sum();
+        if (numShips != ships.size()) return false;
+
+        List<IntPoint> occupied = new ArrayList<>();
+
+        for (Battleship battleship : ships) {
+            int x = battleship.getX();
+            int y = battleship.getY();
+            for (int i = 0; i < battleship.getLength(); i++) {
+                if (x >= 0 && x < config.getMapWidth() && y >= 0 && y < config.getMapHeight() && !occupied.contains(new IntPoint(x, y))) {
+                    occupied.add(new IntPoint(x, y));
+                    x += battleship.getRot().dx();
+                    y += battleship.getRot().dy();
+                }
+                else return false;
+            }
+        }
+        return true;
+    }
+
+    /**
+     * Handles the reception of a ShootMessage.
+     *
+     * @param msg  the received ShootMessage
+     * @param from the ID of the sender client
+     */
+    @Override
+    public void received(ShootMessage msg, int from) {
+        if (state != ServerState.BATTLE)
+            LOGGER.log(Level.ERROR, "shoot not allowed in {0}", state); //NON-NLS
+        else{
+            setState(ServerState.ANIMATION);
+            shoot(getPlayerById(from), msg.getPosition());
+        }
+
+    }
+
+    /**
+     * Marks the player as ready and sets their ships.
+     * Transitions the state to PLAY if both players are ready.
+     *
+     * @param player the player who is ready
+     * @param ships  the list of ships placed by the player
+     */
+    void playerReady(Player player, List<Battleship> ships) {
+        if (!readyPlayers.add(player)) {
+            LOGGER.log(Level.ERROR, "{0} was already ready", player); //NON-NLS
+            return;
+        }
+        ships.forEach(player.getMap()::add);
+        if (readyPlayers.size() == 2) {
+            for (Player p : players)
+                send(p, new StartBattleMessage(p == activePlayer));
+            setState(ServerState.BATTLE);
+        }
+    }
+
+    /**
+     * Handles the shooting action by the player.
+     *
+     * @param p   the player who shot
+     * @param pos the position of the shot
+     */
+    void shoot(Player p, IntPoint pos) {
+        if (p != activePlayer) return;
+        final Player otherPlayer = getOpponent(activePlayer);
+        final Battleship selectedShip = otherPlayer.getMap().findShipAt(pos);
+        if (selectedShip == null) {
+            // shot missed
+            send(activePlayer, EffectMessage.miss(true, pos));
+            send(otherPlayer, EffectMessage.miss(false, pos));
+            activePlayer = otherPlayer;
+        }
+        else {
+            // shot hit a ship
+            selectedShip.hit(pos);
+            if (otherPlayer.getMap().getRemainingShips().isEmpty()) {
+                // game is over
+                send(activePlayer, EffectMessage.won(pos, selectedShip));
+                send(otherPlayer, EffectMessage.lost(pos, selectedShip, activePlayer.getMap().getRemainingShips()));
+                setState(ServerState.GAME_OVER);
+                return;
+            }
+            else if (selectedShip.isDestroyed()) {
+                // ship has been destroyed, but game is not yet over
+                send(activePlayer, EffectMessage.shipDestroyed(true, pos, selectedShip));
+                send(otherPlayer, EffectMessage.shipDestroyed(false, pos, selectedShip));
+            }
+            else {
+                // ship has been hit, but it hasn't been destroyed
+                send(activePlayer, EffectMessage.hit(true, pos));
+                send(otherPlayer, EffectMessage.hit(false, pos));
+            }
+        }
+    }
+}

Projekte/battleship/model/src/main/java/pp/battleship/game/server/ServerSender.java

@@ -0,0 +1,23 @@
+////////////////////////////////////////
+// Programming project code
+// UniBw M, 2022, 2023, 2024
+// www.unibw.de/inf2
+// (c) Mark Minas (mark.minas@unibw.de)
+////////////////////////////////////////
+
+package pp.battleship.game.server;
+
+import pp.battleship.message.server.ServerMessage;
+
+/**
+ * Interface for sending messages to a client.
+ */
+public interface ServerSender {
+    /**
+     * Send the specified message to the client.
+     *
+     * @param id      the id of the client that shall receive the message
+     * @param message the message
+     */
+    void send(int id, ServerMessage message);
+}

Projekte/battleship/model/src/main/java/pp/battleship/game/server/ServerState.java

@@ -0,0 +1,38 @@
+////////////////////////////////////////
+// Programming project code
+// UniBw M, 2022, 2023, 2024
+// www.unibw.de/inf2
+// (c) Mark Minas (mark.minas@unibw.de)
+////////////////////////////////////////
+
+package pp.battleship.game.server;
+
+/**
+ * Represents the different states of the Battleship server during the game lifecycle.
+ */
+enum ServerState {
+    /**
+     * The server is waiting for clients to connect.
+     */
+    WAIT,
+
+    /**
+     * The server is waiting for clients to set up their maps.
+     */
+    SET_UP,
+
+    /**
+     * The battle of the game where players take turns to attack each other's ships.
+     */
+    BATTLE,
+
+    /**
+     * The server is waiting for all clients to finish the shoot animation.
+     */
+    ANIMATION,
+
+    /**
+     * The game has ended because all the ships of one player have been destroyed.
+     */
+    GAME_OVER
+}

Projekte/battleship/model/src/main/java/pp/battleship/game/singlemode/BattleshipClientConfig.java

@@ -0,0 +1,114 @@
+////////////////////////////////////////
+// Programming project code
+// UniBw M, 2022, 2023, 2024
+// www.unibw.de/inf2
+// (c) Mark Minas (mark.minas@unibw.de)
+////////////////////////////////////////
+
+package pp.battleship.game.singlemode;
+
+import pp.battleship.BattleshipConfig;
+import pp.battleship.model.IntPoint;
+
+import java.io.File;
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+
+/**
+ * Class providing access to the Battleship client configuration.
+ * Extends {@link BattleshipConfig} to include additional properties specific to the client.
+ * This class manages configuration settings related to the RobotClient's behavior
+ * and the game maps used in single mode.
+ * <p>
+ * <b>Note:</b> Attributes of this class should not be marked as {@code final}
+ * to ensure proper functionality when reading from a properties file.
+ * </p>
+ */
+public class BattleshipClientConfig extends BattleshipConfig {
+
+    /**
+     * Array representing the predefined shooting locations for the RobotClient.
+     * The array stores coordinates in pairs, where even indices represent x-coordinates
+     * and odd indices represent y-coordinates.
+     */
+    @Property("robot.targets")
+    private int[] robotTargets = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+
+    /**
+     * The delay (in milliseconds) between shots fired by the RobotClient.
+     */
+    @Property("robot.delay")
+    private int delay = 750;
+
+    /**
+     * Path to the file representing the opponent's map.
+     */
+    @Property("map.opponent")
+    private String opponentMap;
+
+    /**
+     * Path to the file representing the player's own map.
+     */
+    @Property("map.own")
+    private String ownMap;
+
+    /**
+     * Creates a default {@code BattleshipClientConfig} with predefined values.
+     */
+    public BattleshipClientConfig() {
+        // Default constructor
+    }
+
+    /**
+     * Returns an iterator of {@link IntPoint} objects representing the predefined
+     * shooting locations for the RobotClient.
+     *
+     * @return an iterator of {@code IntPoint} representing the shooting locations.
+     */
+    public Iterator<IntPoint> getRobotTargets() {
+        List<IntPoint> targets = new ArrayList<>();
+        for (int i = 0; i < robotTargets.length; i += 2) {
+            int x = robotTargets[i];
+            int y = robotTargets[i + 1];
+            targets.add(new IntPoint(x, y));
+        }
+        return targets.iterator();
+    }
+
+    /**
+     * Returns the delay (in milliseconds) between shots by the RobotClient.
+     *
+     * @return the delay in milliseconds.
+     */
+    public int getDelay() {
+        return delay;
+    }
+
+    /**
+     * Returns the file representing the opponent's map.
+     *
+     * @return the opponent's map file, or {@code null} if not set.
+     */
+    public File getOpponentMap() {
+        return opponentMap == null ? null : new File(opponentMap);
+    }
+
+    /**
+     * Returns the file representing the player's own map.
+     *
+     * @return the player's own map file, or {@code null} if not set.
+     */
+    public File getOwnMap() {
+        return ownMap == null ? null : new File(ownMap);
+    }
+
+    /**
+     * Determines if the game is in single mode based on the presence of an opponent map.
+     *
+     * @return {@code true} if the opponent map is set, indicating single mode; {@code false} otherwise.
+     */
+    public boolean isSingleMode() {
+        return opponentMap != null;
+    }
+}