added contents

Projekte/battleship/converter/build.gradle

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+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

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+////////////////////////////////////////
+// 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("Models/KingGeorgeV/King_George_V.obj", "KingGeorgeV.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/Models/KingGeorgeV/King_George_V.mtl

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+# 3ds Max Wavefront OBJ Exporter v0.97b - (c)2007 guruware
+# File Created: 16.03.2012 14:15:53
+
+newmtl _King_George_V
+	Ns 60.0000
+	Ni 1.5000
+	d 1.0000
+	Tr 0.0000
+	Tf 1.0000 1.0000 1.0000 
+	illum 2
+	Ka 1.0000 1.0000 1.0000
+	Kd 1.0000 1.0000 1.0000
+	Ks 0.4500 0.4500 0.4500
+	Ke 0.0000 0.0000 0.0000
+	map_Ka King_George_V.jpg
+	map_Kd King_George_V.jpg
+	map_bump King_George_V_bump.jpg
+	bump King_George_V_bump.jpg

Projekte/battleship/converter/src/main/resources/Models/KingGeorgeV/README.txt

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+based on:
+https://free3d.com/3d-model/wwii-ship-uk-king-george-v-class-battleship-v1--185381.html
+License: Free Personal Use Only