added groundwork for shell animation

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

@@ -24,6 +24,7 @@ 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;
 
@@ -43,6 +44,7 @@ class SeaSynchronizer extends ShipMapSynchronizer {
     private static final String SMALL_BOAT_MODEL = "Models/BoatSmall/12219_boat_v2_L2.j3o";
     private static final String BATTLE_MODEL = "Models/Battle/Battle.j3o"; //NON-NLS
     private static final String CV_MODEL = "Models/CV/CV.j3o"; //NON-NLS
+    private static final String SHELL_MODEL = "Models/Shell/45.j3o";
     private static final String COLOR = "Color"; //NON-NLS
     private static final String SHIP = "ship"; //NON-NLS
     private static final String SHOT = "shot"; //NON-NLS
@@ -52,6 +54,8 @@ class SeaSynchronizer extends ShipMapSynchronizer {
 
     private final ShipMap map;
     private final BattleshipApp app;
+    private Shell shell;
+    private Spatial shellModel;
 
     private ParticleEmitter flame, flash, spark, roundspark, smoketrail, debris,
             shockwave;
@@ -318,6 +322,21 @@ class SeaSynchronizer extends ShipMapSynchronizer {
         return waterSplash;
     }
 
+    private void initiateShellFlight(Shot shot) {
+        Vector3f startPosition = new Vector3f(0, 1, 0);  // The position where the shell starts, can be adjusted
+        Vector3f targetPosition = new Vector3f(shot.getX() + 0.5f, 0, shot.getY() + 0.5f);
+
+        shell = new Shell(startPosition, targetPosition, 2f);  // 2 seconds flight duration
+        shellModel = app.getAssetManager().loadModel(SHELL_MODEL);
+        Material material = new Material(app.getAssetManager(), "Common/MatDefs/Misc/Unshaded.j3md");
+        material.setColor("Color", ColorRGBA.Yellow);
+        shellModel.setMaterial(material);
+
+        // Set the initial position for the shell model
+        shellModel.setLocalTranslation(startPosition);
+        //.attachChild(shellModel); TODO
+    }
+
     /**
      * Constructs a {@code SeaSynchronizer} object with the specified application, root node, and ship map.
      *