@Override
  public int hashCode() {
    final int prime = 31;
    int result = 1;
    result = prime * result + ((entity == null) ? 0 : entity.hashCode());
    result = prime * result + ((gameMap == null) ? 0 : gameMap.hashCode());
    result = prime * result + ((loot == null) ? 0 : loot.hashCode());
    result = prime * result + multiplier;
    result = prime * result + ((parent == null) ? 0 : parent.hashCode());
    result = prime * result + x;
    result = prime * result + y;
    return result;
  }