/// <summary>
 /// Removes an enemy from the game.
 /// </summary>
 /// <param name="enemy"></param>
 public void removeEnemy(SSCEnemy enemy)
 {
     this.garbageCollection.Add(enemy);
 }
 /// <summary>
 /// Adds an enemy to the game.
 /// </summary>
 /// <param name="enemy"></param>
 public void addEnemy(SSCEnemy enemy)
 {
     this.enemies.Add(enemy);
 }