Java实现贪吃蛇游戏源码
本文实例为大家分享了Java实现贪吃蛇游戏源码的具体代码,供大家参考,具体内容如下
1.StartGame
package com.qiang.snake;
import javax.swing.*;
//游戏的主启动类
public class StartGame {
public static void main(String[] args) {
JFrame frame = new JFrame();
frame.setResizable(false); //窗口大小不可变
frame.setBounds(10,10,900,720);
frame.add(new GamePanel());
frame.setVisible(true);
frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
}
}
2.Data
package com.qiang.snake;
import javax.swing.*;
import java.net.URL;
//数据中心
public class Data {
public static URL headerURL = Data.class.getResource("/statics/header.png");
public static URL upURL = Data.class.getResource("/statics/up.png");
public static URL downURL = Data.class.getResource("/statics/down.png");
public static URL leftURL = Data.class.getResource("/statics/left.png");
public static URL rightURL = Data.class.getResource("/statics/right.png");
public static URL bodyURL = Data.class.getResource("/statics/body.png");
public static URL foodURL = Data.class.getResource("/statics/food.png");
public static ImageIcon header = new ImageIcon(headerURL);
public static ImageIcon up = new ImageIcon(upURL);
public static ImageIcon down = new ImageIcon(downURL);
public static ImageIcon left = new ImageIcon(leftURL);
public static ImageIcon right = new ImageIcon(rightURL);
public static ImageIcon body = new ImageIcon(bodyURL);
public static ImageIcon food = new ImageIcon(foodURL);
}
3.GamePanel
package com.qiang.snake;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.util.Random;
public class GamePanel extends JPanel implements KeyListener, ActionListener {
int lenth; //蛇的长度
int[] snakeX = new int[600]; //蛇的坐标x
int[] snakeY = new int[500]; //蛇的坐标y
String fx = "R"; //蛇的方向 : R:右 L:左 U:上 D:下
boolean isStart = false; //游戏是否开始
Timer timer = new Timer(100, this); //定时器:第一个参数,就是定时执行时间
//食物
int foodx;
int foody;
Random random = new Random();
boolean isFail = false; //游戏是否结束
int score; //游戏分数!
//构造方法
public GamePanel(){
init();//初始化
this.setFocusable(true); //获取焦点事件
this.addKeyListener(this); //键盘监听事件
timer.start();
}
//初始化方法
public void init(){
lenth = 3;//初始小蛇有三节,包括小脑袋
//初始化开始的蛇,给蛇定位,
snakeX[0] = 100; snakeY[0] = 100;
snakeX[1] = 75; snakeY[1] = 100;
snakeX[2] = 50; snakeY[2] = 100;
//初始化食物数据
foodx = 25 + 25* random.nextInt(34);
foody = 75 + 25* random.nextInt(24);
score = 0; //初始化游戏分数
}
//画组件
@Override
public void paintComponent(Graphics g){
super.paintComponent(g);//清屏
this.setBackground(Color.WHITE); //设置面板的背景色
Data.header.paintIcon(this,g,25,11); //绘制头部信息区域
g.fillRect(25,75,850,600); //绘制游戏区域
//把小蛇画上去
if (fx.equals("R")){ //蛇的头通过方向变量来判断
Data.right.paintIcon(this,g,snakeX[0],snakeY[0]);
}else if (fx.equals("L")){
Data.left.paintIcon(this,g,snakeX[0],snakeY[0]);
}else if (fx.equals("U")){
Data.up.paintIcon(this,g,snakeX[0],snakeY[0]);
}else if (fx.equals("D")){
Data.down.paintIcon(this,g,snakeX[0],snakeY[0]);
}
for (int i = 1; i < lenth; i++) {
Data.body.paintIcon(this,g,snakeX[i],snakeY[i]); //蛇的身体长度根据lenth来控制
}
//画食物
Data.food.paintIcon(this,g,foodx,foody);
g.setColor(Color.white);
g.setFont(new Font("微软雅黑",Font.BOLD,18));
g.drawString("长度 " + lenth,750,35);
g.drawString("分数 " + score,750,50);
//游戏提示
if (isStart==false){
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);
}
//失败判断
if (isFail){
g.setColor(Color.RED);
g.setFont(new Font("微软雅黑",Font.BOLD,40));
g.drawString("失败, 按下空格重新开始",200,300);
}
}
@Override
public void keyTyped(KeyEvent e) {
}
//键盘监听事件
@Override
public void keyPressed(KeyEvent e) {
int keyCode = e.getKeyCode(); //获取按下的键盘
if (keyCode==KeyEvent.VK_SPACE){ //如果是空格
if (isFail){ //如果游戏失败,从头再来!
isFail = false;
init(); //重新初始化
}else { //否则,暂停游戏
isStart = !isStart;
}
repaint();
}
//键盘控制走向
if (keyCode==KeyEvent.VK_LEFT){
fx = "L";
}else if (keyCode==KeyEvent.VK_RIGHT){
fx = "R";
}else if (keyCode==KeyEvent.VK_UP){
fx = "U";
}else if (keyCode==KeyEvent.VK_DOWN){
fx = "D";
}
}
@Override
public void keyReleased(KeyEvent e) {
}
//定时执行的操作
@Override
public void actionPerformed(ActionEvent e) {
//如果游戏处于开始状态,并且没有结束,则小蛇可以移动
if (isStart && isFail==false){
//右移:即让后一个移到前一个的位置即可 !
for (int i = lenth-1; i > 0; i--) { //除了脑袋都往前移:身体移动
snakeX[i] = snakeX[i-1]; //即第i节(后一节)的位置变为(i-1:前一节)节的位置!
snakeY[i] = snakeY[i-1];
}
//通过方向控制,头部移动
if (fx.equals("R")){
snakeX[0] = snakeX[0]+25;
if (snakeX[0]>850) snakeX[0] = 25;
}else if (fx.equals("L")){
snakeX[0] = snakeX[0]-25;
if (snakeX[0]<25) snakeX[0] = 850;
}else if (fx.equals("U")){
snakeY[0] = snakeY[0]-25;
if (snakeY[0]<75) snakeY[0] = 650;
}else if (fx.equals("D")){
snakeY[0] = snakeY[0]+25;
if (snakeY[0]>650) snakeY[0] = 75;
}
//吃食物:当蛇的头和食物一样时,算吃到食物!
if (snakeX[0]==foodx && snakeY[0]==foody){
//1.长度加一
lenth++;
//每吃一个食物,增加积分
score = score + 10;
//2.重新生成食物
foodx = 25 + 25* random.nextInt(34);
foody = 75 + 25* random.nextInt(24);
}
//结束判断,头和身体撞到了
for (int i = 1; i < lenth; i++) {
//如果头和身体碰撞,那就说明游戏失败
if (snakeX[i]==snakeX[0] && snakeY[i]==snakeY[0] ){
isFail = true;
}
}
repaint(); //需要不断的更新页面实现动画
}
timer.start();//让时间动起来!
}
}
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