javaswing实现贪吃蛇
游戏窗口类
package com.tcs;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.Random;
public class GamePanel extends JPanel {
//绘制面板
//定义蛇结构
int length;//蛇的长度
//蛇横坐标
int [] snakex=new int[600];//蛇的横坐标
//蛇的纵坐标
int [] snakey=new int[600];//蛇的纵坐标
String fx;//初始方向
int foodx;//食物的横坐标
int foody;//食物的纵坐标
int source;//分数
int lv; //等级
int m;//初始速度
Random random=null;
//按下空格开始
boolean isstart;
//失败判定
boolean isdel;
Timer timer=null;
public GamePanel() {
//获得焦点事件
this.setFocusable(true);
timer=new Timer(500, new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
if(isstart==true && isdel==false){
if(foodx==snakex[0]&&foody==snakey[0]){
length=length+1;
source+=10;
random=new Random();
foodx=25+25*random.nextInt(34);
foody=75+25*random.nextInt(24);
}
if (length>10){
lv=1;
m=800;
}else if(length>20){
lv=2;
m=600;
}
//前一节身体向后一节身体移动
for(int i=length-1;i>0;i--){
snakex[i]=snakex[i-1];
snakey[i]=snakey[i-1];
repaint();
}
//向右
if(fx.equals("right")){
snakex[0]=snakex[0]+25;
//边界判断
if(snakex[0]>850){
snakex[0]=25;}
repaint();
}
else if(fx.equals("left")){
snakex[0]=snakex[0]-25;
//边界判断
if(snakex[0]<25){
snakex[0]=850;}
repaint();
}
else if(fx.equals("up")){
snakey[0]=snakey[0]-25;
//边界判断
if(snakey[0]<75){
snakey[0]=650;}
repaint();
}
else if(fx.equals("down")){
snakey[0]=snakey[0]+25;
//边界判断
if(snakey[0]>650){
snakey[0]=75;}
repaint();
}
//重画
for (int i=1;i<length;i++){
if (snakex[0]==snakex[i] && snakey[0]==snakey[i]){
isdel=true;
}
}
repaint();
}
timer.start();
}
});
init();
//获得键盘监听事件
this.addKeyListener(new KeyAdapter() {
@Override
public void keyTyped(KeyEvent e) {
int i=e.getKeyChar();
if(i==KeyEvent.VK_SPACE){
if(isdel){
isdel=false;
init();
}else {
isstart=!isstart;
}
repaint();
}
//上
if (i==119){
fx="up";
}
//下
if (i==115){
fx="down";
}
//左
if (i==97){
fx="left";
}
//右
if (i==100){
fx="right";
}
}
}
);
}
public void init(){
length=3;
snakex[0]=100;snakey[0]=100;
snakex[1]=75; snakey[1]=100;
snakex[2]=50; snakey[2]=100;
fx="right";//定义蛇头的初始方向向右
foodx=300;
foody=300;
isstart=false;
//初始化食物,边界加上游戏界面内的随机一个坐标
random=new Random();
foodx=25+25*random.nextInt(34);
foody=75+25*random.nextInt(24);
timer.start();
isdel=false;
source=0;
lv=0;
m=1000;
}
@Override
//游戏中所有的内容都由这个画笔绘画
protected void paintComponent(Graphics g) {
super.paintComponent(g);//清屏
g.setColor(Color.black);
g.fillRect(25,75,850,650);//游戏界面
GameDate.food.paintIcon(this,g,foodx,foody);
g.setColor(Color.black);
g.setFont(new Font("微软雅黑",Font.BOLD,40));
g.drawString("成长记录",300,45);
//分数
g.setColor(Color.black);
g.setFont(new Font("微软雅黑",Font.BOLD,18));
g.drawString("长度："+length,750,35);
g.drawString("分数："+source,750,50);
g.drawString("等级："+lv,750,75);
if (fx.equals("right")){
GameDate.imageIconKEY_RIGHT.paintIcon(this,g,snakex[0],snakey[0]);
}else if(fx.equals("left")){
GameDate.imageIconKEY_LEFT.paintIcon(this,g,snakex[0],snakey[0]);
}else if(fx.equals("up")){
GameDate.imageIconKEY_UP.paintIcon(this,g,snakex[0],snakey[0]);
}else if(fx.equals("down")){
GameDate.imageIconKEY_DOWN.paintIcon(this,g,snakex[0],snakey[0]);
}
for (int i=1;i<length;i++){
//画蛇的身体
GameDate.body.paintIcon(this,g,snakex[i],snakey[i]);
}
if (!isstart){
g.setColor(Color.white);
g.setFont(new Font("微软雅黑",Font.BOLD,40));
g.drawString("按下空格开始游戏",300,300);
}
if(isdel){
g.setColor(Color.red);
g.setFont(new Font("微软雅黑",Font.BOLD,40));
g.drawString("按下空格重新开始游戏",300,300);
}
}
}
获取图片的类
package com.tcs;
import javax.swing.*;
import java.net.URL;
public class GameDate {
public static final URL KEY_UP =GameDate.class.getResource("20210609002744177.png");
public static ImageIcon imageIconKEY_UP=new ImageIcon(KEY_UP);
public static final URL KEY_DOWN =GameDate.class.getResource("20210609002803353.png");
public static ImageIcon imageIconKEY_DOWN=new ImageIcon(KEY_DOWN);
public static final URL KEY_RIGHT =GameDate.class.getResource("20210609002818339.png");
public static ImageIcon imageIconKEY_RIGHT=new ImageIcon(KEY_RIGHT);
public static final URL KEY_LEFT =GameDate.class.getResource("20210609002812556.png");
public static ImageIcon imageIconKEY_LEFT=new ImageIcon(KEY_LEFT);
public static final URL FOOD=GameDate.class.getResource("20210609002727267.png");
public static ImageIcon food=new ImageIcon(FOOD);
public static final URL SNAKE_BODY=GameDate.class.getResource("20210609002708755.png");
static ImageIcon body=new ImageIcon(SNAKE_BODY);
}