java编写的贪吃蛇游戏源码

1、1、 函数程序结构图 贪吃蛇 MapYardTextSnakePaintThreadNodeKeyMonitorFoodDirectionDrawMian函数paintScoreCheck.stopgetscoresetscoreprocessKeyDeadifTailaddDeltailHeadaddTailadd()Deltail()HeadadddrawmoveeatkeyPressedRunPauseRestartgo_onisPausesetPauseinstallDrawreAppeargetMsetMgetNsetNDrawKeypressed定义方向变量L,U,D,R 二、题目

2、分析通过分析该程序基本需要以下几个类：Text（Main方法）、Snake（蛇）、Food（食物）、Yard（窗口）、Map（地图）、Node（节点）、PaintThread（线程）、Dir（方向）、KeyMonitor（键盘监听）。主要实现蛇运动的基本操作和一些事件反应、游戏分数的记录、暂停、重新开始、更改蛇蛇颜色，蛇的移动速度，地图、死亡模式的改变等功能。本程序运用Java语言知识，用面向对象的思维设计“贪吃蛇”游戏。3、 结果分析运行程序出现游戏界面，蛇（Snake）头自动向前移动，用键盘的上（Up）下（Down）左（Left）右（Right）键控制蛇头的移动方向。游戏窗体中在随机位置出

3、现紫色的食物（Food）。1、每吃一个加5分2、默认撞墙不死3、默认速度34、默认地图15、默认普通蛇身6、默认30分提升一个速度档次7、默认每个速度都走完后更换地图并且速度恢复默认，积分归零功能键：1、按F1重新开始2、按空格键暂停/继续3、按1/2/3/4/5数字键设置蛇的移动速度（逐渐变快）4、按F2更换地图（3种）5、按F3普通蛇/彩蛇的切换6、按F4更换游戏模式（蛇撞到最外围为死亡还是从另一端返回）该程序初步完成了“贪吃蛇”的游戏雏形，但是缺乏完善。比如：界面效果十分粗糙、屏幕闪烁、缺少声音等。但是，我们通过编写贪吃蛇，能更好的运用面向对象的思维方式了，并学到了许多有用的经验。四、

4、附录（程序清单）1、 Snake.javaimport java.awt.Color;import java.awt.Graphics;import java.awt.event.KeyEvent;public class Snake Node head = null;Node tail = null;int size = 0;Yard y;Node n = new Node(1, 2, Dir.D);public Snake(Yard y) head = n;tail = n;size = 1;this.y = y;for(int i=0;i<3;i+)this.Headadd();p

5、ublic void Tailadd() Node node = null;switch (tail.dir) case L :node = new Node(tail.m+1, tail.n, tail.dir);break;case U :node = new Node(tail.m, tail.n+1, tail.dir);break;case R :node = new Node(tail.m-1, tail.n, tail.dir);break;case D :node = new Node(tail.m, tail.n+1, tail.dir);break;tail.next =

6、node;node.pre = tail;tail = node;size +;public void Deltail() if (size = 0)return;tail = tail.pre;tail.next = null;public void Headadd() Node node = null;switch (head.dir) case L:node = new Node(head.m - 1, head.n, head.dir);break;case U:node = new Node(head.m, head.n - 1, head.dir);break;case R:nod

7、e = new Node(head.m + 1, head.n, head.dir);break;case D:node = new Node(head.m, head.n + 1, head.dir);break;node.next = head;head.pre = node;head = node;size+;public void draw(Graphics g) if (size <= 0)return;move();for (Node n = head; n != null; n = n.next) if(head=n)g.setColor(Color.BLUE);if(n.

8、dir=Dir.L|n.dir=Dir.R)g.fillOval(n.m*Yard.B_WIDTH, n.n*Yard.B_WIDTH, Yard.B_WIDTH, Yard.B_WIDTH-3);elseg.fillOval(n.m*Yard.B_WIDTH, n.n*Yard.B_WIDTH, Yard.B_WIDTH-3, Yard.B_WIDTH);elsen.draw(g);public void Deadif() switch(Yard.STYLE)case 2:if (head.m < 0 | head.n < 30/Yard.B_WIDTH | head.m >

9、;= (Yard.WIDTH / Yard.B_WIDTH)| head.n >= (Yard.HEIGHT / Yard.B_WIDTH) y.stop();break;case 1:int cols = Yard.WIDTH / Yard.B_WIDTH;int rows = Yard.HEIGHT / Yard.B_WIDTH;if(head.m < 0) head.m = cols;else if (head.m >= cols) head.m = 0;else if (head.n < 30/Yard.B_WIDTH) head.n = rows;else i

10、f (head.n >= rows) head.n = 30/Yard.B_WIDTH;break;for (Node p = head.next; p != null; p = p.next) if (head.m = p.m && head.n = p.n) y.stop();switch (Yard.MAP) case 1:/地图1break;case 2:/地图2for (int j = 10; j < Yard.WIDTH/Yard.B_WIDTH-10; j +)if(head.m=j&&head.n=10)y.stop();for (i

11、nt j = 10; j < Yard.WIDTH/Yard.B_WIDTH-10; j +)if(head.m=j&&head.n=20)y.stop();break;case 3:/地图3for (int j = 10; j < Yard.WIDTH/Yard.B_WIDTH-10; j +)if(head.m=j&&head.n=10)y.stop();for (int j = 10; j < Yard.WIDTH/Yard.B_WIDTH-10; j +)if(head.m=j&&head.n=20)y.stop();f

12、or (int j = 20; j < 26; j +)if(head.m=Yard.WIDTH/Yard.B_WIDTH-10&&head.n=j)y.stop();for (int j = 5; j < 10; j +)if(head.m=10&&head.n=j)y.stop();break;default:break;void move() Yard.MOVECHECK = true;Headadd();Deltail();Deadif();public void eat(food e) if (y.f.getM() = y.s.head.m

13、 && y.f.getN() = y.s.head.n)e.reAppear();this.Tailadd();y.setscore(y.getscore() + 5);public void keyPressed(KeyEvent e) int key = e.getKeyCode();switch (key) case KeyEvent.VK_LEFT:if (head.dir != Dir.R)head.dir = Dir.L;break;case KeyEvent.VK_UP:if (head.dir != Dir.D)head.dir = Dir.U;break;ca

14、se KeyEvent.VK_RIGHT:if (head.dir != Dir.L)head.dir = Dir.R;break;case KeyEvent.VK_DOWN:if (head.dir != Dir.U)head.dir = Dir.D;break;2、 Food.javaimport java.awt.Color;import java.awt.Graphics;import java.util.Random;public class Food public static int FOODSTYLE = 1;private int m = r.nextInt(Yard.WID

15、TH / Yard.B_WIDTH);/ 横格private int n = r.nextInt(Yard.HEIGHT / Yard.B_WIDTH - 30/Yard.B_WIDTH) + 30/Yard.B_WIDTH;/ 竖格public static Random r = new Random();public int getM() return m;public void setM(int m) this.m = m;public int getN() return n;public void setN(int n) this.n = n;public void reAppear(

16、) this.m = r.nextInt(Yard.WIDTH / Yard.B_WIDTH);this.n = r.nextInt(Yard.HEIGHT / Yard.B_WIDTH - 30/Yard.B_WIDTH) + 30/Yard.B_WIDTH;public void draw(Graphics g) switch (Yard.MAP) case 2:/地图1for (int j = 10; j < Yard.WIDTH/Yard.B_WIDTH-10; j +)if(m=j&&n=10)this.reAppear();for (int j = 10; j

17、 < Yard.WIDTH/Yard.B_WIDTH-10; j +)if(m=j&&n=20)this.reAppear();break;case 3:/地图2for (int j = 10; j < Yard.WIDTH/Yard.B_WIDTH-10; j +)if(m=j&&n=10)this.reAppear();for (int j = 10; j < Yard.WIDTH/Yard.B_WIDTH-10; j +)if(m=j&&n=20)this.reAppear();for (int j = 20; j <

18、; 26; j +)if(m=Yard.WIDTH/Yard.B_WIDTH-10&&n=j)this.reAppear();for (int j = 5; j < 10; j +)if(m=10&&n=j)this.reAppear();break;default:break;Color old = g.getColor();g.setColor(new Color(100, 13, 250);g.fillOval(m * Yard.B_WIDTH, n * Yard.B_WIDTH, Yard.B_WIDTH,Yard.B_WIDTH);g.setCo

19、lor(old);3、 Yard.javaimport java.awt.Color;import java.awt.Font;import java.awt.Frame;import java.awt.Graphics;import java.awt.event.KeyEvent;import java.awt.event.WindowAdapter;import java.awt.event.WindowEvent;public class Yard extends Frame public static final int WIDTH = 600;public static final

20、int HEIGHT = 480;public static final int B_WIDTH = 15;private int score = 0;public static int MAP =1;/地形public static int STYLE =1;/模式public static int SBODY =1;/蛇身颜色模式public static boolean MOVECHECK= true;PaintThread th = new PaintThread(this);private boolean gameover = false;public boolean isGameo

21、ver() return gameover;public void setGameover(boolean gameover) this.gameover = gameover;public Yard()Color c = new Color(0,166,0);this.setTitle("贪吃蛇");this.setLocation(200, 200);this.setSize(WIDTH, HEIGHT);this.setBackground(c);this.setResizable(false);this.setVisible(true);this.addWindow

22、Listener(new WindowAdapter() / 匿名的局部类Overridepublic void windowClosing(WindowEvent e) setVisible(false);System.exit(0););this.addKeyListener(new KeyMonitor();th.start();Food f = new Food();Snake s = new Snake(this);Overridepublic void paint(Graphics g) / 画格Color old = g.getColor();Map.draw(g);f.draw

23、(g);/ 画蛋s.draw(g);/ 画蛇s.eat(f);g.setColor(Color.YELLOW);g.drawString("score:" + score, 10, 60);g.setFont(new Font("宋体", Font.BOLD, 50);if (gameover) g.setColor(Color.black);g.fillRect(0, 0, WIDTH, HEIGHT);g.setColor(Color.YELLOW);g.drawString("游戏结束！", 200, 180);g.setFon

24、t(new Font("宋体", Font.BOLD, 30);g.drawString("score:" + score, 10, 60);th.pause();g.setColor(old);this.ScoreCheck(g);public void ScoreCheck(Graphics g)if(score = 30) th.install(90);if(score =60) th.install(60);if(score = 90)th.install(120);MAP+;if(MAP = 4)g.setColor(Color.black);

25、g.fillRect(0, 0, WIDTH, HEIGHT);g.setColor(Color.YELLOW);g.drawString("恭喜你通全关了！", 130, 180);g.setFont(new Font("宋体", Font.BOLD, 30);g.drawString("score:" + score, 10, 60);th.pause();elseg.setColor(Color.black);g.fillRect(0, 0, WIDTH, HEIGHT);g.setColor(Color.YELLOW);g.d

26、rawString("恭喜你过关了！", 130, 180);g.drawString("下一关载入中.", 130, 280);g.setFont(new Font("宋体", Font.BOLD, 30);g.drawString("score:" + score, 10, 60);try th.sleep(3000); catch (InterruptedException e) e.printStackTrace();f.reAppear();th.reStart();public void stop()

27、gameover = true;public int getscore() return score;public void setscore(int i) score = i;public void processKey(int key, KeyEvent e) if(MOVECHECK)s.keyPressed(e);MOVECHECK = false;switch (key) case KeyEvent.VK_SPACE:if (!th.isPause()th.pause();elseth.go_on();break;case KeyEvent.VK_F1:th.reStart();br

28、eak;case KeyEvent.VK_1:th.install(300);break;case KeyEvent.VK_2:th.install(200);break;case KeyEvent.VK_3:th.install(120);break;case KeyEvent.VK_4:th.install(90);break;case KeyEvent.VK_5:th.install(50);break;case KeyEvent.VK_F2:MAP = MAP%3+1;f.reAppear();th.reStart();break;case KeyEvent.VK_F4:STYLE =

29、 STYLE%2+1;f.reAppear();th.reStart();break;case KeyEvent.VK_F3:SBODY = SBODY%2+1;break;default :break;4、 Map.javaimport java.awt.Color;import java.awt.Graphics;public class Map public static void draw(Graphics g)Color old = g.getColor();g.setColor(new Color(100, 0, 0);switch (Yard.MAP) case 1:/地图1br

30、eak;case 2:/地图2for (int j = 10; j < Yard.WIDTH/Yard.B_WIDTH-10; j +)g.fillRect(j*Yard.B_WIDTH, 10*Yard.B_WIDTH, Yard.B_WIDTH, Yard.B_WIDTH);for (int j = 10; j < Yard.WIDTH/Yard.B_WIDTH-10; j +)g.fillRect(j*Yard.B_WIDTH, 20*Yard.B_WIDTH, Yard.B_WIDTH, Yard.B_WIDTH);break;case 3:/地图3for (int j =

31、 10; j < Yard.WIDTH/Yard.B_WIDTH-10; j +)g.fillRect(j*Yard.B_WIDTH, 10*Yard.B_WIDTH, Yard.B_WIDTH, Yard.B_WIDTH);for (int j = 10; j < Yard.WIDTH/Yard.B_WIDTH-10; j +)g.fillRect(j*Yard.B_WIDTH, 20*Yard.B_WIDTH, Yard.B_WIDTH, Yard.B_WIDTH);for (int j = 20; j < 26; j +)g.fillRect(Yard.WIDTH/Ya

32、rd.B_WIDTH-10)*Yard.B_WIDTH, j*Yard.B_WIDTH, Yard.B_WIDTH, Yard.B_WIDTH);for (int j = 5; j < 10; j +)g.fillRect(10*Yard.B_WIDTH, j*Yard.B_WIDTH, Yard.B_WIDTH, Yard.B_WIDTH);break;default :break;g.setColor(old);5、PaintThread.javaclass PaintThread extends Thread private boolean pause = false;privat

33、e int speed = 120;Yard y;public PaintThread(Yard y) this.y = y;public void go_on() this.pause = false;public boolean isPause() return pause;public void pause() this.pause = true;public void reStart() this.install(120);y.setscore(0);this.pause = false;y.s = new Snake(y);y.setGameover(false);public void install(int i) this.speed = i;Overri