javaswing实现贪吃蛇源码

package com.wuzihao.snake; import javax.swing.*; import java.awt.*; import java.awt.event.KeyAdapter; import java.awt.event.KeyEvent; import java.util.LinkedList; import java.util.Timer; import java.util.TimerTask; public class MainFrame extends JFrame { private Snake snake; private Timer timer; private JPanel jPanel; private Node food; public MainFrame() throws HeadlessException { initFrame(); initGamePanel(); //初始化蛇 initSnake(); //设置定时器，让蛇在定时时间内移动 initTimer(); //初始化食物 initFood(); //设置键盘监听时间 setKeyListener(); } private void setKeyListener() { addKeyListener(new KeyAdapter() { //当键盘按下时，会自动掉此方法 @Override public void keyPressed(KeyEvent e) { //键盘中的一个键都有一个编号 switch (e.getKeyCode()){ case KeyEvent.VK_UP: //上键 if(snake.getDirection()!=Direction.DOWN){ snake.setDirection(Direction.UP); } break; case KeyEvent.VK_DOWN: //下键 if(snake.getDirection()!=Direction.UP){ snake.setDirection(Direction.DOWN); } break; case KeyEvent.VK_LEFT: //左键 if(snake.getDirection()!=Direction.RIGHT){ snake.setDirection(Direction.LEFT); } break; case KeyEvent.VK_RIGHT: //右键 if(snake.getDirection()!=Direction.LEFT){ snake.setDirection(Direction.RIGHT); } break; } } }); } //初始化食物 private void initFood() { food=new Node(); food.random(); } private void initTimer() { this.timer = new Timer(); TimerTask timerTask = new TimerTask(){ @Override public void run() { snake.move(); //判断蛇头是否和食物重合 Node head = snake.getBody().getFirst(); if(head.getX()==food.getX()&&head.getY()==food.getY()){ snake.eat(food); food.random(); } //重新绘制棋盘 jPanel.repaint(); } }; //每100毫秒，执行一次监听事件 timer.scheduleAtFixedRate(timerTask,0,100); } private void initSnake() { this.snake = new Snake(); } private void initGamePanel(){ jPanel = new JPanel(){ @Override public void paint(Graphics g) { //清空棋盘 g.clearRect(0,0,600,600); //绘制横线 for (int i = 0; i <= 40; i++) { g.drawLine(0,i*15,600,i*15); } //绘制竖线 for (int i = 0; i <= 40; i++) { g.drawLine(i*15,0,i*15,600); } //绘制蛇 LinkedList<Node> body = snake.getBody(); for (Node node : body) { g.fillRect(node.getX()*15,node.getY()*15,15,15); } //绘制食物 g.fillRect(food.getX()*15,food.getY()*15,15,15); } }; this.add(jPanel); } private void initFrame(){ this.setSize(615,610); this.setLocation(250,10); this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); this.setVisible(true); this.setBackground(new Color(245, 206, 206)); } public static void main(String[] args) { new MainFrame(); } }