Me下的贪吃蛇小游戏(5)

 headSanke.setPoint_Y(headSanke.getPoint_Y()-Snake_Direction.SNAKE_SIZE);

 headSanke.setDirection(Snake_Direction.UP); 

 }

 }

 else

 headSanke.setPoint_x(headSanke.getPoint_x()-Snake_Direction.SNAKE_SIZE);

 }

 else if(headSanke.getDirection()==Snake_Direction.DOWN||headSanke.getDirection()==Snake_Direction.DOWN_y)

 {

 if(headSanke.getPoint_Y()+Snake_Direction.SNAKE_SIZE>Canvas_Height-20)

 {

 if(headSanke.getPoint_x()-Snake_Direction.SNAKE_SIZE<1)

 {

  headSanke.setDirection(Snake_Direction.RIGHT) ;

  headSanke.setPoint_x(headSanke.getPoint_x()+Snake_Direction.SNAKE_SIZE);

 }  

 else

 {  

  headSanke.setDirection(Snake_Direction.LEFT) ;

  headSanke.setPoint_x(headSanke.getPoint_x()-Snake_Direction.SNAKE_SIZE);  

 }

 }

 else

 headSanke.setPoint_Y(headSanke.getPoint_Y()+Snake_Direction.SNAKE_SIZE)  ;

 }