java编写简易贪吃蛇游戏
本文实例为大家分享了java编写的贪吃蛇源码,供大家参考,具体内容如下
程序共包含以下两个文件:
文件:ShellWin.java
import java.awt.Color; import java.awt.Dimension; import java.awt.FlowLayout; import java.awt.Graphics; import java.awt.event.*; import javax.swing.Box; import javax.swing.JButton; import javax.swing.JOptionPane; import javax.swing.JPanel; @SuppressWarnings("serial") public class ShellWin extends JPanel implements Runnable{ //实现了键盘与鼠标两个接口 int direction; int length; int score=0; boolean control=false; int[] xs=new int[400]; //蛇的个数,xy,坐标控制 int[] ys=new int[400]; int douX;int douY; Thread thread; public ShellWin() { setPreferredSize(new Dimension(600, 600)); setLocation(100, 100); setBackground(Color.GREEN); thread=new Thread(this); //为这个类添加一个线程 create_snake(); create_bean(); } public void paintComponent(Graphics g) //绘制 { super.paintComponent(g); //Jpanel内的方法,起到清屏的作用 g.drawString("分数:"+score, 50, 50); g.drawRect(0,0, 600, 600); show_snake(g); show_bean(g); } //能不能吃豆,能不能死 void die() { JOptionPane.showMessageDialog(null, "game over", "游戏结束", JOptionPane.ERROR_MESSAGE); } void eat() { length++; this.score+=100; create_bean(); } boolean out_bounds() { if(xs[0]==-10||xs[0]==600||ys[0]==-10||ys[0]==600) //出界即死 { return true; } return false; } void change_direction(int new_direction) //控制方向 { if(direction%2!=new_direction%2||direction==0) // 2 4 3 1 上下左右 { direction=new_direction; } } boolean eat_self() { for (int i = 1; i < length; i++) { if(xs[0]==xs[i]&&ys[0]==ys[i]) { return true; } } return false; } boolean can_eat() { if(xs[0]==douX&&ys[0]==douY) { return true; } return false; } void create_snake() { direction=0;length=5; for (int i = 0; i < length; i++) { xs[i]=400; ys[i]=400+10*i; } } void create_bean() { douX=10*(int)(Math.random()*60); douY=10*(int)(Math.random()*60); for (int i = 0; i < length; i++) { if(xs[i]==douX&&ys[i]==douY) { create_bean(); return; } } } void show_bean(Graphics g) //仍然得要写入到paintComponent方法内 { g.setColor(Color.RED); g.fillOval(douX, douY, 10, 10); } void crawl() { if(direction!=0) for (int i = length-1; i >0; i--) { // 2 4 3 1 上下左右 xs[i]=xs[i-1]; //后一个替代前一个 4=3; ys[i]=ys[i-1]; } switch (direction) { case 1: xs[0]=xs[0]+10; break; case 2: ys[0]=ys[0]-10; break; case 3: xs[0]=xs[0]-10; break; case 4: ys[0]=ys[0]+10; break; default: break; } } void show_snake(Graphics g) { for (int i = 0; i < length; i++) { g.setColor(Color.BLUE); if(i==0){ g.drawOval(xs[i], ys[i], 10, 10); continue; } g.drawRect(xs[i], ys[i], 10, 10); //蛇的长度与大小 } } @Override public void run() { while(control) { try { if(can_eat()) { eat(); } if(out_bounds()) { die(); return; } if(eat_self()) { die(); return; } crawl(); Thread.sleep(200); repaint(); } catch (InterruptedException e) { e.printStackTrace(); } } } class panel extends JPanel implements ActionListener,KeyListener{ JButton startGame=new JButton("开始"); JButton stopGame=new JButton("停止"); Box box1; //盒式布局 panel(){ setLayout(new FlowLayout()); box1=Box.createHorizontalBox(); box1.add(startGame); box1.add(Box.createHorizontalStrut(2)); box1.add(stopGame); setSize(800,800); setBackground(Color.black); addKeyListener(this); //为ShellWin 对象注册一个侦听器 startGame.addActionListener(this); //为开始按钮添加侦听器,this指代的是Actionistener这个类所创建的对象 stopGame.addActionListener(this); //为结束按钮添加侦听器,this指代的是Actionistener这个类所创建的对象 } @Override public void actionPerformed(ActionEvent e) { if(e.getSource()==startGame) { this.requestFocus(); //将光标添加到该控件中 control=true; thread.start(); //线程开始 //*********************************** this.repaint(100,100, 600, 600); } if(e.getSource()==stopGame) { this.requestFocus(); //将光标添加到该控件中 control=false; //线程结束 } } @Override public void keyPressed(KeyEvent e) { switch (e.getKeyCode()) { case KeyEvent.VK_UP: change_direction(2); break; case KeyEvent.VK_DOWN: if(direction!=0) change_direction(4); break; case KeyEvent.VK_LEFT: change_direction(3); break; case KeyEvent.VK_RIGHT: change_direction(1); break; default: break; } } @Override public void keyReleased(KeyEvent e) { // TODO Auto-generated method stub } @Override public void keyTyped(KeyEvent e) { // TODO Auto-generated method stub } } }
文件:ShellMain.java
import javax.swing.Box; import javax.swing.JFrame; @SuppressWarnings("serial") public class ShellMain extends JFrame { ShellWin win=new ShellWin(); ShellWin.panel pan=win.new panel(); Box box,box2; ShellMain(){ box2=Box.createHorizontalBox(); box2.add(win); box=Box.createVerticalBox(); box.add(pan.box1); box.add(Box.createVerticalStrut(8)); box.add(box2); pan.add(box); setTitle("贪吃蛇"); setSize(800,800); setVisible(true); setLayout(null); add(pan); setLocation(0,0); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); } public static void main(String[] args) { new ShellMain(); } }
更多精彩游戏,请参考专题《java经典小游戏》
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