export class constant  {
   public static EnemyPlaneType = {
    TYPE1: 1,
    TYPE2: 2,
   }
   public static Combination = {
    PLAN1: 1,
    PLAN2: 2,
    PLAN3: 3,
    
   }
   public static CollisionType = {
      SELF_PLANE: 1 << 1,
      ENEMY_PLANE: 1 << 2,
      SELF_BULLET: 1<< 3
      
     }

}