fixed sinking-rotation, volumeslider; deleted TODO comments

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

@@ -57,10 +57,8 @@ public void receivedEffect(EffectMessage msg) {
 
         myTurn = msg.isMyTurn();
         logic.setInfoText(msg.getInfoTextKey());
-        //TODO: Ex. 13 add shell -> ItemAddedEvent
         Shell shell = new Shell(msg.getShot());
         affectedMap(msg).add(shell);
-        //TODO: Ex. 13 Shell sound -> GameSound
         logic.playSound(Sound.SHELL_FLYING);
         logic.setState(new ShootingState(logic, shell, myTurn, msg));
     }

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

@@ -26,7 +26,6 @@ public class ShootingState extends ClientState {
      * @param msg    the effect message associated with the shooting action
      */
     public ShootingState(ClientGameLogic logic, Shell shell, boolean myTurn, EffectMessage msg) {
-        //TODO: Ex. 13 ShootingState
         super(logic);
         this.msg = msg;
         this.myTurn = myTurn;

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

@@ -221,7 +221,6 @@ private boolean checkMap(List<Battleship> ships) {
      */
     @Override
     public void received(ShootMessage msg, int from) {
-        //TODO: Ex. 13 Server State
         if (state != ServerState.BATTLE)
             LOGGER.log(Level.ERROR, "shoot not allowed in {0}", state); //NON-NLS
         else{

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

@@ -9,7 +9,6 @@
  * a Bezier curve.
  */
 public class Shell implements Item {
-    //TODO: Ex. 13 Shell
     /**
      * Initial position of the shell
      */