Java小游戏实现:贪吃蛇

package com.xxh.snake; import java.awt.Graphics; import java.awt.Image; import java.awt.Point; import java.awt.event.KeyEvent; import java.awt.event.KeyListener; import java.util.LinkedList; import javax.swing.ImageIcon; import javax.swing.JButton; import javax.swing.JPanel; /** * 游戏界面 * 当按下一个键时会调用KeyPressed处理器，当松开一个键时会调用KeyReleased处理器， * 当输入一个统一编码时会调用KeyTyped处理器。如果这个键不是统一码(如功能键，修改键，动作键和控制键) * 每个按键事件有一个相关的按键字符和按键代码，分别由KeyEvent中的getKeyChar()和getKeyCode()方法返回 */ public class Game extends JPanel implements Runnable, KeyListener { private static final long serialVersionUID = 3982837981892208868L; Sound sd = new Sound(); Map map = new Map(); Score se = new Score(); Food fd = new Food(); ReadAndWriter mt = new ReadAndWriter(); int snakex = 160; int snakey = 220; int snakeNumber = 3; int movex = 0; int movey = 0; int fail_y = 520; int score = 0; int pause_y = 550; int timeRow1 = 0; int timeRow2 = 0; int velocity = 200; int mode; int back_y = 60; int foodNumber = 0; int barrierMap = 1; String strMap = "历险模式1"; boolean time = false; boolean start = false; private Image greenstar, greenstar1, greenstar2, greenstar3, greenstar4; private Image score1; private Image redstar; private Image game_over; private Image pause; private Image grid1; private Image snakebg; private Image timeRow; private Image wall; private Image back; private ImageIcon img1; JButton bt1; private LinkedList<Point> body = new LinkedList<>(); private LinkedList<Point> body1 = new LinkedList<>();// 为了解决贪食蛇撞到身体后出现的bug // 构造方法 public Game() { this.setLayout(null); greenstar1 = new ImageIcon(getClass().getResource("/image/greenstar1.png")).getImage(); greenstar2 = new ImageIcon(getClass().getResource("/image/greenstar2.png")).getImage(); greenstar3 = new ImageIcon(getClass().getResource("/image/greenstar3.png")).getImage(); greenstar4 = new ImageIcon(getClass().getResource("/image/greenstar4.png")).getImage(); redstar = new ImageIcon(getClass().getResource("/image/redstar.png")).getImage(); game_over = new ImageIcon(getClass().getResource("/image/game_over.png")).getImage(); pause = new ImageIcon(getClass().getResource("/image/pause.png")).getImage(); grid1 = new ImageIcon(getClass().getResource("/image/grid1.png")).getImage(); snakebg = new ImageIcon(getClass().getResource("/image/snakebg.png")).getImage(); score1 = new ImageIcon(getClass().getResource("/image/score1.png")).getImage(); timeRow = new ImageIcon(getClass().getResource("/image/timerow0.png")).getImage(); wall = new ImageIcon(getClass().getResource("/image/wall.png")).getImage(); back = new ImageIcon(getClass().getResource("/image/back.png")).getImage(); img1 = new ImageIcon(getClass().getResource("/image/back.png")); greenstar = greenstar4; for (int a = 1; a < 4; a++) { body.add(new Point(snakex - a * 20, snakey)); body1.add(new Point(snakex - a * 20, snakey)); } bt1 = new JButton(img1); this.add(bt1); } @Override public void paint(Graphics g) { super.paint(g); // 背景 g.drawImage(snakebg, 0, 0, this); // 网格 //g.drawImage(grid1, 0, 0, this); // 分数 g.drawImage(score1, 0, 4, this); g.drawImage(se.score2, 35 + 25 * se.score_x, 4, this); g.drawImage(se.score3, 60 + 25 * se.score_x, 4, this); g.drawImage(se.score4, 85 + 25 * se.score_x, 4, this); g.drawImage(se.score5, 110 + 25 * se.score_x, 4, this); // 进度条 g.drawImage(timeRow, 610, 448, this); // 蛇头 g.drawImage(greenstar, snakex, snakey, this); // 身体 for (Point p : body) { g.drawImage(redstar, p.x, p.y, this); } // 食物 g.drawImage(fd.food, fd.foodx + 1, fd.foody, this); // 地图 for (Point p : map.map) { g.drawImage(wall, p.x, p.y, this); } // 游戏失败 g.drawImage(game_over, 200, fail_y, this); // 游戏暂停 g.drawImage(pause, 240, pause_y, this); // 返回按钮 g.drawImage(back, 780, 430 + back_y, this); } // 失败方法 public void fail() { start = false; snakex = 1000;// 蛇撞到自身会剩下蛇头 snakey = 1000; if (body.size() > 0 && null != body) body.remove(0); if (fail_y == 520) { sd.sound("fail"); back_y = 0; bt1.setBounds(780, 430 + back_y, 47, 34); } if (fail_y <= 200) { } else { fail_y -= 5; } maxScore(); } // 最高分判定与写入 public void maxScore() { String str = mt.bufferedReader(); // 拆分字符串，获取元素，为了比较，转换为Integer类型 String[] newstr = str.split(","); int a = Integer.parseInt(newstr[0]); int b = Integer.parseInt(newstr[1]); int c = Integer.parseInt(newstr[2]); switch (mode) { case 0: if (score > a) a = score; break; case 1: if (score > b) b = score; break; case 2: if (score > c) c = score; break; } mt.bufferedWriter(a, b, c); } // 暂停功能 public void pause() { if (pause_y == 550) { pause_y = 170; back_y = 0; bt1.setBounds(780, 430 + back_y, 47, 34); start = false; } else { pause_y = 550; back_y = 60; bt1.setBounds(780, 430 + back_y, 47, 34); start = true; } } // 进度条功能 public void timeRow() { if (timeRow1 == 0) { sd.sound("reward"); } timeRow1 += 5; if (timeRow1 % 10 == 0 && start) { timeRow2++; timeRow = new ImageIcon(getClass().getResource("/image/timerow" + timeRow2 + ".png")).getImage(); } // 进度条读完，重新生成食物 if (timeRow2 == 16) { time = false; fd.food = fd.food1; fd.foodx = (int) (Math.random() * 42) * 20; fd.foody = (int) (Math.random() * 24) * 20; timeRow1 = 0; timeRow2 = 1; timeRow = new ImageIcon(getClass().getResource("/image/timerow0.png")).getImage(); sd.sound("closeReward"); } } // 速度方法 public void velocity() { if (foodNumber % 5 == 0) velocity -= 20; if (mode == 2 && foodNumber % 10 == 0) changeMap();// 冒险模式下，更换地图 } // 更换地图，重置贪食蛇坐标 public void changeMap() { if (barrierMap == 4) { barrierMap = 1; } else { barrierMap++; } strMap = "历险模式" + barrierMap; map.map(strMap); body.clear(); body1.clear(); snakex = 160; snakey = 220; movex = 20; movey = 0; greenstar = greenstar4; } // 重置游戏，因为不会点击按钮实现点击