java基于Swing的贪吃蛇游戏源代码＋报告

package MySnake; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.border.EmptyBorder; import org.eclipse.jface.text.WhitespaceCharacterPainter; import javax.swing.JLabel; import java.awt.Font; import java.awt.Graphics; import java.awt.Graphics2D; import javax.swing.JButton; import java.awt.event.ActionListener; import java.util.Random; import java.awt.event.ActionEvent; import java.awt.Color; import java.awt.event.KeyAdapter; import java.awt.event.KeyEvent; import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.File; import java.io.FileNotFoundException; import java.io.FileReader; import java.io.FileWriter; import java.io.IOException; public class SnakeFrame extends JFrame { private int xx = 370;//地图宽度 private int yy = 280;//地图长度 int level = 0; //设置游戏难度（改变速度） JPanel panel; private File f = new File("data"); //用于存储游戏记录的File对象 private JPanel contentPane; //内容面板 private static Snake snake; //地图里的蛇 private static Body food; //地图里的食物 Thread t1 = null; //蛇行线程 JLabel now_score = new JLabel(""); //当前长度 JLabel best_score = new JLabel(""); //历史记录 public static void main(String[] args) { new SnakeFrame().setVisible(true); } public SnakeFrame() { super("我的小小贪吃蛇"); //显示窗口标题 setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setBounds(250, 100, 620, 390); //设置窗口位置及大小 contentPane = new JPanel(); //JFrame的内容面板 setContentPane(contentPane); contentPane.setLayout(null); JLabel label = new JLabel("小小贪吃蛇"); //显示标题 label.setBounds(152, 10, 123, 29); label.setFont(new Font("宋体", Font.BOLD, 20)); //宋体粗体 contentPane.add(label); //重开按钮 JButton jb1 = new JButton("新游戏"); jb1.setBounds(426, 44, 109, 48); jb1.setFont(new Font("宋体", Font.BOLD, 16)); jb1.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { writeHis(); //写入历史记录 Initial(); //重新初始化 } }); contentPane.add(jb1); jb1.addKeyListener(new KeyAdapter() {//KeyAdapter实现了接口KeyListener，用来接收处理键盘事件 public void keyPressed(KeyEvent e) { changeDirection(e); } }); //暂停按钮 JButton jb2 = new JButton("暂停"); jb2.addKeyListener(new KeyAdapter() { public void keyPressed(KeyEvent e) { changeDirection(e); } }); jb2.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { if(t1!=null) { if(jb2.getText().equals("暂停")) { t1.suspend(); //使得线程进入阻塞状态，并且不会自动恢复 jb2.setText("继续"); } else if(jb2.getText().equals("继续")) { t1.resume(); //使线程重新进入可执行状态 jb2.setText("暂停"); } } } }); jb2.setBounds(426, 95, 109, 48); //设置“暂停”、“继续”按钮位置及大小 jb2.setFont(new Font("宋体", Font.BOLD, 16)); //宋体加粗 contentPane.add(jb2); //增加难度 JButton jb3 = new JButton("增加难度"); jb3.setBounds(426, 148, 109, 48); //设置“增加难度”按钮位置及大小 jb3.setFont(new Font("宋体", Font.BOLD, 16)); //宋体加粗 jb3.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { writeHis(); //写入历史记录 level = level + 20 ; //提高速度 Initial(); //重新初始化 } }); contentPane.add(jb3); jb3.addKeyListener(new KeyAdapter() { public void keyPressed(KeyEvent e) { changeDirection(e); } }); panel = new JPanel() { public void paint(Graphics g) { super.paint(g); Graphics2D g2 = (Graphics2D) g; //利用Graphics2D类 g2.setColor(new Color(50, 50,50)); //画网格线 for(int i=0;i<=xx;i+=10) { g2.drawLine(i, 0, i, yy+10); }//画纵向的线 for(int i=0;i<=yy+10;i+=10) { g2.drawLine(0, i, xx+10, i); }//画横线的线 for(int i=0;i<snake.list.size();i++) { Body body = snake.list.get(i); if(i==0) g2.setColor(Color.yellow);//设置蛇头颜色为绿色 else g2.setColor(Color.green);//设置身体颜色为绿色 g.fillOval(body.x, body.y, 10, 10); } g.fillOval(food.x, food.y, 10, 10);//将食物绘制到地图上 } }; Initial();//初始化函数 panel.setBackground(Color.DARK_GRAY); panel.setBounds(24, 44, xx, yy); //背景位置大小 panel.setFocusable(true); panel.requestFocus(); panel.addKeyListener(new KeyAdapter() { public void keyPressed(KeyEvent e) { changeDirection(e); } }); contentPane.add(panel); //显示当前长度 JLabel label_1 = new JLabel("当前长度"); label_1.setFont(new Font("宋体", Font.PLAIN, 17)); label_1.setBounds(446, 210, 68, 36); contentPane.add(label_1); //显示当前长度数值 now_score.setForeground(Color.BLACK); now_score.setFont(new Font("宋体", Font.PLAIN, 14)); now_score.setBounds(476, 240, 54, 29); contentPane.add(now_score); //显示最高长度 JLabel best_scoresd = new JLabel("最高长度"); best_scoresd.setFont(new Font("宋体", Font.PLAIN, 17)); best_scoresd.setBounds(446, 260, 68, 36); contentPane.add(best_scoresd); //显示最高长度数值 best_score.setForeground(Color.RED); best_score.setFont(new Font("宋体", Font.PLAIN, 14)); best_score.setBounds(476, 290, 54, 29); contentPane.add(best_score); t1 = new Thread(()->{ //按钮对象注册动作事件侦听者 while(true) { snake.adjustSnakeDirection(); //蛇调整身体方向 snake.move(); if(isTouch()==true) { new MyDialog(SnakeFrame.this,"游戏失败！你撞到墙啦！").setVisible(true); new MyDialog(SnakeFrame.this,"难度为"+ level/20 + "级 " + "最终长度为：" + now_score.getText()).setVisible(true); writeHis();//写入历史记录 Initial(); } else if (isBitten()==true) { new MyDialog(SnakeFrame.this,"游戏失败！你咬到自己啦！").setVisible(true); new MyDialog(SnakeFrame.this,"难度为" + level/20 + "级 " + "最终长度为：" + now_score.getText()).setVisible(true); writeHis();//写入历史记录 Initial(); } else if(isFeeding()==true) {//若蛇头碰到食物 snake.eat(); //吃掉食物 newFood(); //重新生成食物 panel.repaint(); //绘制出食物 now_score.setText(snake.length+""); if(Integer.valueOf(now_score.getText())>Integer.valueOf(best_score.getText()))//判断是否需要记录为最高值 best_score.setText(now_score.getText()); } panel.repaint(); try { Thread.sleep(Snake.timer - level);//每timer毫秒蛇移动一次 同时通过-level来改变难度 } catch (InterruptedException e1) { e1.printStackTrace(); } } }); t1.start(); } public void Initial() {//生成蛇和食物 snake = new Snake(); newFood(); readHis(); //读取记录 now_score.setText(snake.length+""); if(best_score.getText()==null) best_score.setText(now_score.getText()); setResizable(false); } public boolean isTouch() { //判断蛇是否撞墙 Body head = snake.list.get(0); //获取蛇头对象 if(head.x<0||head.x>xx-10) return true; else if(head.y<0||head.y>yy-10) return true; else return false; } public boolean isBitten() { //判断蛇是否咬到自己 Body head = snake.list.get(0); //获取蛇头对象 for(int i=1;i<snake.list.size();i++) { if(head.x==snake.list.get(i).x&&head.y==snake.list.get(i).y){ return true; } } return false; } //随机生成一块新食物 public void newFood() { while(true) { Random r1 = new Random(); Random r2 = new Random(); int x = 10*r1.nextInt(( xx + 1)/10); //随机生成食物的坐标 int y = 10*r2.nextInt(( yy + 1)/10); for(Body body:snake.list) { if(body.x==x && body.y==y) continue; } food = new Body(x, y); //生成新食物 return; } } //判断蛇是否吃到食物 public boolean isFeeding() { Body head = snake.list.get(0); //获取蛇头对象 if(head.x==foo