java实现简单贪吃蛇小游戏

本文实例为大家分享了java实现贪吃蛇小游戏，供大家参考，具体内容如下

有两个类，放在同一文件下下即可，背景图片，标题，蛇尾可自行更改

import java.awt.*;
import javax.swing.*;

import java.awt.event.*;
public class myjframe extends jframe{

 public myjframe() {
  
  int x= toolkit.getdefaulttoolkit().getscreensize().width;
  int y = toolkit.getdefaulttoolkit().getscreensize().height;
  setlocation((x-800)/2, (y-800)/2);
  setsize(800,800);
  setvisible(true);
  setdefaultcloseoperation(exit_on_close);
  settitle("贪吃蛇");
  
  setlayout(null);
  
  getlayeredpane().setlayout(null);
  jlabel background = new jlabel(new imageicon("c:\\users\\hp\\desktop\\javaa\\background3.jpg"));//注意此处路径
  jlabel title = new jlabel(new imageicon("c:\\users\\hp\\desktop\\javaa\\title1.jpg"));//注意此处路径
  background.setbounds(20,80,750,650);
  title.setbounds(0,0,800,75);
  getlayeredpane().add(background,new integer(integer.min_value));
  getlayeredpane().add(title,new integer(integer.min_value+1));
  
  ((jpanel)getcontentpane()).setopaque(false);
  
  mypanel mypanel = new mypanel();
  mypanel.setbounds(0,0,getwidth(),getheight());
  add(mypanel);
 
 }
 
 public static void main(string[] args) {
  new myjframe();
 }
}

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.util.random;

public class mypanel extends jpanel implements actionlistener{
 int lenght ;
 int score1;
 boolean jieshux = false;

 jlabel scorel = new jlabel("分数："+score1);
 jlabel lenghl = new jlabel("长度："+lenght);
 
 jlabel shibai = new jlabel("按下空格开始游戏!");
 jlabel jieshu = new jlabel("游戏失败！按空格重新开始！");
 
 string dir = "r";
 boolean isstart = false;
 int[][] snake = new int[300][2];
 
 random r = new random();
 int x,y;
 
 //初始化
 public void initialize() {
  snake[0][0]=70;
  snake[0][1]=80;
  snake[1][0]=45;
  snake[1][1]=80;
  snake[2][0]=20;
  snake[2][1]=80;
  isstart = true;
  jieshux = false;
  lenght = 3;
  score1 = 0;
  dir = "r";
  repaint();
 }
 
 public mypanel() {
  
  setlayout(null);
  scorel.setbounds(700, 20, 50, 30);
  lenghl.setbounds(700, 40, 50, 30);
  shibai.setbounds(300,400,200,60);
  shibai.setfont(new font("黑体",font.bold,20));
  jieshu.setfont(new font("黑体",font.bold,20));
  jieshu.setvisible(false);
  jieshu.setbounds(250,400,300,60);
  
  add(scorel);
  add(lenghl);
  add(shibai);
  add(jieshu);
  
  x = r.nextint(29)*25+20;
  y = r.nextint(25)*25+80;
  
  //this.setfocusable(true); //焦点获取
  setopaque(false);
  
  initialize();
  
  timer t = new timer(200,this);
  this.addkeylistener(new keyadapter() {
   public void keypressed(keyevent e) {
    if(e.getkeycode()==keyevent.vk_space && isstart==false) {
     isstart=true;
    }else if(e.getkeycode()==keyevent.vk_space && isstart==true &&jieshux == false){
     isstart = false;
    }else if(e.getkeycode()==keyevent.vk_w && isstart==true && dir!="d"&&jieshux == false) {
     dir="u";
    }else if(e.getkeycode()==keyevent.vk_a && isstart==true && dir!="r"&&jieshux == false) {
     dir="l";
    }else if(e.getkeycode()==keyevent.vk_d && isstart==true && dir!="l"&&jieshux == false) {
     dir="r";
    }else if(e.getkeycode()==keyevent.vk_s && isstart==true && dir!="u"&&jieshux == false) {
     dir="d";
    }else if(e.getkeycode()==keyevent.vk_space && jieshux==true) {
     initialize();
    }
   }
  });
  t.start();

 }
 
 @override
 public void actionperformed(actionevent e) {
  this.requestfocus(true);

   if(isstart&&dir.equals("r")&&!jieshux) {
    for(int i=0;i<lenght-1;i++) {
     if(snake[i][0]>=745) {
      //snake[i][0]=20;
      jieshux = !jieshux;
      //isstart = !isstart;
      break;
     }else {
      snake[lenght-i-1][0]=snake[lenght-i-2][0];
      snake[lenght-i-1][1]=snake[lenght-i-2][1];
     }
    }
    if(!jieshux) snake[0][0]=snake[1][0]+25;
   } else if(isstart&&dir.equals("d")&&!jieshux) {
    for(int i=0;i<lenght-1;i++) {
     if(snake[i][1]>=705) {
      //snake[i][1]=80;
      jieshux = !jieshux;
      //isstart = !isstart;
      break;
     }else {
      snake[lenght-i-1][0]=snake[lenght-i-2][0];
      snake[lenght-i-1][1]=snake[lenght-i-2][1];
     }
    }
    if(!jieshux) snake[0][1]=snake[1][1]+25;
   }else if(isstart&&dir.equals("u")&&!jieshux) {
    for(int i=0;i<lenght-1;i++) {
     if(snake[i][1]<=80) {
      //snake[i][1]=705;
      jieshux = !jieshux;
      //isstart = !isstart;
      break;
     }else {
      snake[lenght-i-1][0]=snake[lenght-i-2][0];
      snake[lenght-i-1][1]=snake[lenght-i-2][1];
     }
    }
    if(!jieshux) snake[0][1]=snake[1][1]-25;
   }else if(isstart&&dir.equals("l")&&!jieshux) {
    for(int i=0;i<lenght-1;i++) {
     if(snake[i][0]<=20) {
      jieshux = !jieshux;
      //isstart = !isstart;
      break;
     }else {
      snake[lenght-i-1][0]=snake[lenght-i-2][0];
      snake[lenght-i-1][1]=snake[lenght-i-2][1];
     }
    }
    if(!jieshux) snake[0][0]=snake[1][0]-25;
   }

   if(snake[0][1]==y&&snake[0][0]==x) {
    x = r.nextint(29)*25+20;
    y = r.nextint(25)*25+80;
    
    score1+=10;
    lenght++;
    snake[lenght-1][1]=snake[lenght-2][1];
    snake[lenght-1][0]=snake[lenght-2][0];

    
    add(scorel);
    add(lenghl);
   }
   
   if(isstart==false) {
    shibai.setvisible(true);
   }else {
    shibai.setvisible(false);
    if(jieshux == false) {
     jieshu.setvisible(false);
    }else {
     jieshu.setvisible(true);
    }
   }
   
   for(int i = 1;i<lenght;i++) {
    if(snake[0][0]==snake[i][0]&&snake[0][1]==snake[i][1]) {
     jieshux=true;
    }
   }
   
   if(isstart&&!jieshux)repaint();
 }
 
 public void paint(graphics g) {
  super.paint(g);
  //边界为（20，80），（770，730）
  scorel.settext("分数："+score1);
  lenghl.settext("长度："+lenght);
  
  g.drawline(18, 78, 18, 732);
  g.drawline(18, 78, 772, 78);
  g.drawline(18, 732, 772, 732);
  g.drawline(772, 78, 772, 732);
  //竖线
  for(int i=20;i<=770;i+=25) {
   g.drawline(i,80,i,730);
   //g.drawline(0,i,600,i);
  }
  
  //横线
  for(int i=80;i<=750;i+=25) {
   //g.drawline(i,50,i,780);
   g.drawline(20,i,770,i);
  }
  
  for(int i = 0;i<lenght;i++) {
   if(i>0) {
    g.drawimage(new imageicon("c:\\users\\hp\\desktop\\javaa\\body.png").getimage(), snake[i][0],snake[i][1],this);//注意此处路径
   }else {
    g.filloval(snake[i][0], snake[i][1], 25, 25);
   }
  }
  
  g.setcolor(color.red);
  g.filloval(x, y, 25, 25);
  
 }

}

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