@SuppressWarnings("deprecation")
	void eat(Tank tk)
	{
		if((tk instanceof UserTank) && open)
		{
			open=false;
		new shop(((UserTank)tk)).setVisible(true);
		((UserTank)tk).tc.threadRobot.suspend();
		((UserTank)tk).tc.threadRepaint.suspend();	
		((UserTank)tk).keyList.clear();//һҪ㣬ȻԼ
		tk.setMoveDir(TANK_DIR.STOP);
			
		
		}
	}