java编写贪吃蛇小游戏

废话不多说，直接奉上代码：

frame.java

package snake;
 
import java.awt.graphics;
import java.awt.menu;
import java.awt.menubar;
import java.awt.menuitem;
import java.awt.event.actionevent;
import java.awt.event.actionlistener;
import java.awt.event.keyevent;
import java.awt.event.keylistener;
 
import javax.swing.jframe;
 
public class frame extends jframe implements keylistener {
 
  /**
   * 
   */
   
  boolean isalive;
  boolean ispause;
  panel panel;
  character direction;
  private static final long serialversionuid = 1l;
 
  public frame(){
    // todo auto-generated constructor stub
    setdefaultcloseoperation(jframe.exit_on_close);
    setsize(300,300);
    addkeylistener(this);
    panel = new panel();
    add(panel);
    setvisible(true);
    isalive = true;
    ispause = false;
    direction = new character('d'); 
    menubar menubar = new menubar();
    menu menu = new menu("menu");
    menuitem reset = new menuitem("newgame");
    menuitem pause= new menuitem("pause");
     
    pause.addactionlistener(new actionlistener(){
 
      @override
      public void actionperformed(actionevent e) {
        // todo auto-generated method stub
        if(!ispause) ispause= true;
        else     ispause= false; 
      }
       
    }); 
     
    reset.addactionlistener(new actionlistener(){
 
      @override
      public void actionperformed(actionevent e) {
        // todo auto-generated method stub
        reset();
      }
       
    });
     
    menu.add(reset);
    menu.add(pause);
    menubar.add(menu);
    setmenubar(menubar);
     
     
  }
   
  public void reset(){
    panel.reset();
    isalive = true;
  }
 
  @override
  public void keytyped(keyevent e) {
    // todo auto-generated method stub
     
  }
 
  @override
  public void keypressed(keyevent e) {
    // todo auto-generated method stub
    if(e.getkeycode()==keyevent.vk_up)  direction = 'w';
    if(e.getkeycode()==keyevent.vk_down) direction = 's';
    if(e.getkeycode()==keyevent.vk_left) direction = 'a';
    if(e.getkeycode()==keyevent.vk_right) direction = 'd';
  }
 
  @override
  public void keyreleased(keyevent e) {
    // todo auto-generated method stub
     
  }
   
  public void paint(graphics g){
    panel.repaint();
  }
 
}

launch.java

package snake;
 
import java.util.timer;
import java.util.timertask;
 
public class launch extends timertask {
 
  frame frame = new frame();
  public launch() {
    // todo auto-generated constructor stub
     
  }
   
  boolean crashwall(){
    snakebody sb = frame.panel.snake.getfirst();
    if((sb.x<0)||(sb.y<0)||(sb.x>=panel.line)||(sb.y>=panel.line))
      return true;
    else
      return false;
  }
  void initial(){
    frame.panel.snake.add(newbody());
    frame.panel.food = newbody(); 
  }
  @override
  public void run() {
    // todo auto-generated method stub
    if(frame.panel.snake.isempty())
      initial();
    if(frame.isalive)
      if(!frame.ispause){
        if(gostraight())
           frame.isalive = false;
        frame.repaint();
      }
    if(crashwall()) frame.isalive = false;
  }
   
  snakebody newbody(){
    snakebody sb = new snakebody();
 
    boolean overlap = true;
    while(overlap){
      overlap =false;
      sb.x = (int) (math.random()*(panel.line-2)+1);
      sb.y = (int) (math.random()*(panel.line-2)+1);
      if(!frame.panel.snake.isempty())
      for(snakebody s : frame.panel.snake)
        if(sb.equals(s))
          overlap =true;
    }
     
    return sb;
  }
 
   
  void eat(snakebody sb){
    frame.panel.snake.addfirst(sb);
  }
  boolean gostraight(){
     
    boolean result = false;
     
    snakebody sb =new snakebody(frame.panel.snake.getfirst());
    frame.panel.snake.removelast();
    if(frame.direction=='w')
      sb.turnup();
    if(frame.direction=='s')
      sb.turndown();
    if(frame.direction=='a')
      sb.turnleft();
    if(frame.direction=='d')
      sb.turnright();
     
    for(snakebody s : frame.panel.snake){
      if(sb.equals(s)) result = true;
    }
     
    frame.panel.snake.addfirst(sb);
    if(sb.equals(frame.panel.food)){
      if(frame.direction=='w')
        frame.panel.food.turnup();
      if(frame.direction=='s')
        frame.panel.food.turndown();
      if(frame.direction=='a')
        frame.panel.food.turnleft();
      if(frame.direction=='d')
        frame.panel.food.turnright();
      eat(frame.panel.food);
      frame.panel.food = newbody();
    }
     
    return result;
  }
 
   
   
  public static void main(string[] args){
    // todo auto-generated method stub
     launch timertask = new launch();
     timer timer = new timer();
     
     timer.schedule(timertask,0,500);
  }
 
}

panel.java

package snake;
 
import java.awt.color;
import java.awt.graphics;
import java.util.linkedlist;
 
import javax.swing.jpanel;
 
 public class panel extends jpanel {
 
    /**
   * 
   */
  private static final long serialversionuid = 1l;
  public linkedlist<snakebody> snake = new linkedlist<snakebody>();
  static final int line = 10;
  snakebody food = new snakebody(-99,-99);
    
  public panel() {
    // todo auto-generated constructor stub
  }
   
  public void reset(){
    snake.clear();  
  }
   
  public void paint(graphics g){
    g.setcolor(color.white);
    g.fillrect(0, 0, getwidth(), getheight());
 
  
    for(snakebody sb : snake){
      g.setcolor(color.black);
      g.drawrect(sb.x*getwidth()/line,sb.y*getheight()/line,getwidth()/line,getheight()/line);
      g.setcolor(color.orange);
      g.fillrect(sb.x*getwidth()/line,sb.y*getheight()/line,getwidth()/line,getheight()/line);
    }
    g.setcolor(color.red);
    g.fillrect(food.x*getwidth()/line,food.y*getheight()/line,getwidth()/line,getheight()/line);
     
  }
}

snakebody.java

package snake;
 
 class snakebody {
   
  int x;
  int y;
   
  public snakebody() {
    // todo auto-generated constructor stub
    x = 0;
    y = 0;
  }
   
  public snakebody(int a,int b){
    x = a;
    y = b;
  }
  public snakebody(snakebody sb){
    this(sb.x,sb.y);
  }
   
  public void turnup(){
    y--;
  }
  public void turndown(){
    y++;
  }
  public void turnleft(){
    x--;
  }
  public void turnright(){
    x++;
  }
   
  boolean equals(snakebody s){
    if((x==s.x)&&(y==s.y)) return true;
    else          return false;
  }
 
}

以上所述就是本文给大家分享的贪吃蛇的全部代码了，希望能够对大家熟练掌握java有所帮助。