edited the fire, adjusted the rocket_size,added the models in j3o files, adjusted the Gamesound, added the artefacts

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

@@ -11,10 +11,9 @@ public class Shell implements Item {
     private static final Logger LOGGER = System.getLogger(Shell.class.getName());
 
     /**
-     * the Target, the Shell will hit, displayed through: x,y
+     * the Target, the Shell will hit
      */
-    private int x;
-    private int y;
+    private IntPoint target;
 
     /**
      * the constructor for this class
@@ -22,8 +21,7 @@ public class Shell implements Item {
      * @param target the target, the shell is fired at
      */
     public Shell(IntPoint target) {
-        this.x = target.getX();
-        this.y = target.getY();
+        this.target = target;
         LOGGER.log(Level.INFO, "Shell has been initialized");
     }
 
@@ -49,14 +47,13 @@ public void accept(VoidVisitor visitor) {
         visitor.visit(this);
     }
 
-
     /**
      * getter for the x coordinate
      *
      * @return int x coordinate
      */
     public int getX() {
-        return x;
+        return target.getX();
     }
 
     /**
@@ -65,24 +62,6 @@ public int getX() {
      * @return int y coordinate
      */
     public int getY() {
-        return y;
-    }
-
-    /**
-     * setter for x coordinate
-     *
-     * @param x the new value of x coordinate
-     */
-    public void setX(int x) {
-        this.x = x;
-    }
-
-    /**
-     * setter for y coordinate
-     *
-     * @param y the new value of y coordinate
-     */
-    public void setY(int y) {
-        this.y = y;
+        return target.getY();
     }
 }