100分求助，按完OneMoreTime钮按后，再用键盘改变方向就不好使了

[wangdong20]

RT

package 贪食蛇;
import javax.swing.*;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.GridLayout;
import java.awt.Point;
import java.awt.event.*;

public class TestSnake extends JFrame 
					implements ActionListener{
	private JButton jbtOneMoreTime=new JButton("One more time");
	private JButton jbtExit=new JButton("Exit"); 
	TableLabel tl=new TableLabel();
	
    public TestSnake(){
    	
    	JPanel panel=new JPanel();
    	panel.setLocation(new Point(220,150));
        
    	panel.setLayout(new GridLayout(2,1,5,5));
    	panel.add(jbtOneMoreTime);
    	panel.add(jbtExit);
    	
    	add(tl,BorderLayout.CENTER);
    	add(panel,BorderLayout.EAST);
        
        
        //Register listener with buttons
        jbtOneMoreTime.addActionListener(this);
        jbtExit.addActionListener(this);
    }
    
    
    
    public void actionPerformed(ActionEvent e){
    	if(e.getSource()==jbtOneMoreTime){
    		Snakes s=tl.getSnakes();
    		s.setFocusable(true);
    		jbtOneMoreTime.setFocusable(false);

    		s.initial();
    	}
    		
    	else if(e.getSource()==jbtExit)
    		System.exit(0);
    }

    public static void main(String[] args) {
        // TODO 自动生成方法存根
        TestSnake frame=new TestSnake();
        
        frame.setTitle("Snakes1");
        frame.setSize(360,260);
        frame.setLocationRelativeTo(null);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setVisible(true);
    }

}

Snakes类

package 贪食蛇;
import java.awt.*;
import java.util.*;
import java.awt.event.*;

import javax.swing.*;

public class Snakes extends JPanel{
	/**蛇的头*/
	private Point head=new Point(50,50);
	/**蛇的身体*/
	private ArrayList<Point> body=new ArrayList<Point>();
	/**蛇的方向*/
	private int oldDirection=RIGHT;
	private int newDirection=LEFT;
	/**蛇的生命状况*/
	boolean live=true;
	/**方向上*/
	public static final int UP=1;
	/**方向下*/
	public static final int DOWN=-1;
	/**方向左*/
	public static final int LEFT=2;
	/**方向右*/
	public static final int RIGHT=-2;
	/**分数*/
	private int score=0;
	/**蛇的运动速度*/
	private int speed;
	
	public Snakes(){
		head=new Point(50,50);
		body=new ArrayList<Point>();
		oldDirection=RIGHT;
		newDirection=LEFT;
		live=true;
		score=0;
		//body加上蛇的头部
		body.add(head);
		//body加上蛇的其他部分
		for(int i=40;i>=20;i-=10){
			body.add(new Point(i,50));
		}
		
		addKeyListener(new KeyAdapter(){
    		public void keyPressed(KeyEvent e){
    			switch(e.getKeyCode()){
    			case KeyEvent.VK_UP:    newDirection=UP;   break;
    			case KeyEvent.VK_DOWN:  newDirection=DOWN; break;
    			case KeyEvent.VK_LEFT:  newDirection=LEFT; break;
    			case KeyEvent.VK_RIGHT: newDirection=RIGHT;break;
    			default:  break;
    			}
    		}
    	});
	}
	
	/**蛇的运动*/
	public void move(){
		if(live){
			for(int i=body.size()-1;i>=1;i--){
				bodyMove(body.get(i-1),body.get(i));
			}
			switch(oldDirection){
			case UP:    head.translate(0, -10);  break;
			case DOWN:  head.translate(0, 10);   break;
			case LEFT:  head.translate(-10, 0);  break;
			case RIGHT: head.translate(10, 0);   break;
			default: break;
			}
		}
	}
	
	/**改变蛇的运动方向*/
	public void changeDirection(){
		if(live){
			if(oldDirection+newDirection!=0){
				oldDirection=newDirection;
			}
		}
	}
	
	/**蛇有没有吃到苹果*/
	public boolean isEatApple(Apple a){
		if(head.equals(a.getPoint())){
			score+=10;
			return true;
		}
		else
			return false;
	}
	
	/**获取蛇头*/
	public Point getHead(){
		return head;
	}
	
	/**获取newDIrection*/
	public int getNewDirection(){
		return newDirection;
	}
	
	/**比较两个Point的相对位置,并将后一个Point移动到前一个Point的位置*/
	public void bodyMove(Point previous,Point current){
		if(current.getX()!=previous.getX()){
			int temp=(int) (previous.getX()-current.getX());
			current.translate(temp, 0);
		}
		
		if(current.getY()!=previous.getY()){
			int temp=(int) (previous.getY()-current.getY());
			current.translate(0,temp);
		}
	}
	
	/**获取body*/
	public ArrayList<Point> getBody(){
		return body;
	}
	
	/**获取蛇的尾巴*/
	public Point getTail(){
		return body.get(body.size()-1);
	}
	
	/**检查有没有吃到自己*/
	public boolean isEatItself(){
		for(int i=1;i<body.size()-1;i++){
			if(head.equals(body.get(i)))
				return true;
		}
		return false;
	}
	
	/**判断蛇有没有撞墙*/
	public boolean isBeyondBound(){
		if(head.x>=220||head.y>=220||
				head.x<0||head.y<0)
			return true;
		else
			return false;
	}
	
	public int getScore(){
		return score;
	}
	
	public void initial(){
		head=new Point(50,50);
		body=new ArrayList<Point>();
		oldDirection=RIGHT;
		newDirection=LEFT;
		live=true;
		score=0;
		//body加上蛇的头部
		body.add(head);
		//body加上蛇的其他部分
		for(int i=40;i>=20;i-=10){
			body.add(new Point(i,50));
		}
		
		this.addKeyListener(new KeyAdapter(){
    		public void keyPressed(KeyEvent e){
    			switch(e.getKeyCode()){
    			case KeyEvent.VK_UP:    newDirection=UP;   break;
    			case KeyEvent.VK_DOWN:  newDirection=DOWN; break;
    			case KeyEvent.VK_LEFT:  newDirection=LEFT; break;
    			case KeyEvent.VK_RIGHT: newDirection=RIGHT;break;
    			default:  break;
    			}
    		}
    	});
	}
	
}

[MiceRice]

焦点丢失，你需要在jbtOneMoreTime事件处理代码段的最后一句话，让你的蛇Snakes重新得到focus，也就是在： s.initial(); 和 } 之间，增加s.requestFocus();

[wangdong20]

[Quote=引用楼主 wangdong20 的回复:]
RT

Java code


package 贪食蛇;
import javax.swing.*;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.GridLayout;
import java.awt.Point;
import java.awt.event.*;

publ……
[/Quote]
果然是这样，高手就是高手啊