task mainTask{
		yield;
		cage;
	}

	task cage{
		loop{
			left(GetCenterX+185,GetClipMaxY,6,270);
		}
	}

	// object bullet test
	task left(x,y,speed,angle){
		let obj=Obj_Create(OBJ_SHOT);

		Obj_SetPosition(obj,x,y);
		Obj_SetAngle(obj,angle);
		Obj_SetSpeed(obj,speed);
		ObjShot_SetGraphic(obj,WHITE04);
		ObjShot_SetDelay(obj,5);
		ObjShot_SetBombResist(obj,true);

		while(Obj_BeDeleted(obj)==false) {
			yield;
		}
	}