public void ChangeGameScreenBackkeepcontent(GameScreen oldGameScreen)
 {
     ScreenChange.ScreenChangeBackKeepContent(oldGameScreen);
 }
 public void ChangeGameScreenKeepContent(GameScreen newGameScreen)
 {
     ScreenChange.ScreenChangeKeepContent(newGameScreen);
 }
 public void ChangeGameScreen(GameScreen newGameScreen)
 {
     ScreenChange.ScreenChange(newGameScreen);
 }
 public void ChangeGameScreenBack(GameScreen oldGameScreen)
 {
     ScreenChange.ScreenChangeBack(oldGameScreen);
 }
 public ScreenManager()
 {
     CurrentGameScreen = new MainGameScreen();
 }