Question

初学java 尝试写一个贪吃蛇小游戏，怎么让“蛇”不停的动起来 现在是按一个键动一下

import java.awt.*;
import java.awt.event.KeyEvent;

import javax.swing.JOptionPane;

public class Snake {
static int x,y;
static int X_SPEED=10,Y_SPEED=10,width=10,height=10;
enum Direction {UP,LEFT,DOWN,RIGHT,STOP};
Direction dir=Direction.DOWN;
boolean isEatSelf,isLive=true,L,U,D,R;
GameClient gc;
Snake(int x,int y,GameClient gc){
this.x=x;
this.y=y;
this.gc=gc;
}

void move(){

switch(dir){
case UP:
y-=Y_SPEED;
break;
case DOWN:
y+=Y_SPEED;
System.out.print("mark");
break;
case LEFT:
x-=X_SPEED;
break;
case RIGHT:
x+=X_SPEED;
break;

}
if(x<=0 || y<=0 || x>gc.FRAME_WIDTH || y>=gc.FRAME_HEIGHT ){
isLive=false;

JOptionPane.showMessageDialog(null, "GAME OVER!");

}

}

boolean eatFood(Food food){
if(this.getRec().intersects(food.getRec())) return true;
else return false;
}

Rectangle getRec() {
return new Rectangle(x,y,width,height);
}

void direction(){
if(L&&!U&&!R&&!D) dir=Direction.LEFT;
else if(U && !L && !R && ! D) dir=Direction.UP;
else if(R &&!U && !L && !D) dir=Direction.RIGHT;
else if(D &&!L && !U && !R) dir=Direction.DOWN;

move();
}

void keyPressed(KeyEvent e){
int key=e.getKeyCode();
switch(key){
case KeyEvent.VK_LEFT:
L=true;
D=false;
U=false;
R=false;
break;
case KeyEvent.VK_DOWN:
L=false;
D=true;
U=false;
R=false;
break;
case KeyEvent.VK_UP:
L=false;
D=false;
U=true;
R=false;
System.out.print("mark2");
break;
case KeyEvent.VK_RIGHT:
L=false;
D=false;
U=false;
R=true;
break;

}
direction();

}

void drawMe(Graphics g){
Color c=g.getColor();
g.setColor(Color.BLACK);
g.fillRect(x, y, width, height);
g.setColor(c);
//move();

}

class moveThread implements Runnable{

@Override
public void run() {

move();
System.out.print(D+"ttt");

try{
Thread.sleep(200);
}catch(InterruptedException e){
e.printStackTrace();
}

}

}

void start(){
System.out.print("tett");
new Thread(new moveThread()).start();
}

}

Answer 1

添加循环，跳出循环的条件设置为按了其他方向的按键或撞墙

Answer 2

代码没粘全啊，开头应该给出一个默认运动方向，线程里应该调用direction()函数。你看看这个吧：http://wenku.baidu.com/view/2093560c90c69ec3d5bb753d.html#39124-qzone-1-25161-f00cdc7f4857236c67481f200187bab5

Answer 3

while（true）{

}