private void edgeCheck() {
		Vector2D pos = gameObject.getPos();
		switch(gameObject.getMoveDir()){
		case MOVE_UP:
			blockedCheck(pos.x, pos.y-delta*speed);
			break;
		case MOVE_DOWN:
			blockedCheck(pos.x, pos.y+delta*speed);
			break;
		case MOVE_LEFT:
			blockedCheck(pos.x - delta*speed, pos.y);
			break;
		case MOVE_RIGHT:
			blockedCheck(pos.x + delta*speed, pos.y);
			break;
		case MOVE_NULL:
			break;
		default:
			break;
		}
	}