贪吃蛇java代码.docx

1、贪吃蛇java代码用mvc方式实现的贪吃蛇游戏，共有4个类。运行greedsnake运行即可。主要是观察者模式的使用， 已经添加了很多注释了。1、/* 程序名称：贪食蛇* 原作者：bigf* 修改者：algo* 说明： 以前也用c写过这个程序，现在看到bigf用java写的这个，发现虽然作者自称是java的初学者，* 但是明显编写程序的素养不错，程序结构写得很清晰，有些细微得地方也写得很简洁，一时兴起之* 下， 认真解读了这个程序，发现数据和表现分开得很好，而 近日正在学习mvc设计模式，* 因此尝试把程序得结构改了一下，用mvc模式来实现，对源程序得改动不多。* 同时也为程序增加了一些自己理

2、解得注释，希望对大家阅读有帮助。*/package mvctest;/* author wangyu* version 1.0* description:* * create on :date :2005-6-13 time:15:57:16* lastmodified:* history:*/public class greedsnake public static void main(string args) snakemodel model = new snakemodel(20,30); snakecontrol control = new snakecontrol(model); s

3、nakeview view = new snakeview(model,control); /添加一个观察者，让view成为model的观察者 model.addobserver(view); (new thread(model).start(); -2、package mvctest;/snakecontrol.javaimport java.awt.event.keyevent;import java.awt.event.keylistener;/* mvc中的controler，负责接收用户的操作，并把用户操作通知model*/public class snakecontrol impl

4、ements keylistener snakemodel model; public snakecontrol(snakemodel model) this.model = model; public void keypressed(keyevent e) int keycode = e.getkeycode(); if (model.running) / 运行状态下，处理的按键 switch (keycode) case keyevent.vk_up: model.changedirection(snakemodel.up); break; case keyevent.vk_down: m

5、odel.changedirection(snakemodel.down); break; case keyevent.vk_left: model.changedirection(snakemodel.left); break; case keyevent.vk_right: model.changedirection(snakemodel.right); break; case keyevent.vk_add: case keyevent.vk_page_up: model.speedup(); break; case keyevent.vk_subtract: case keyevent

6、.vk_page_down: model.speeddown(); break; case keyevent.vk_space: case keyevent.vk_p: model.changepausestate(); break; default: / 任何情况下处理的按键，按键导致重新启动游戏 if (keycode = keyevent.vk_r | keycode = keyevent.vk_s | keycode = keyevent.vk_enter) model.reset(); public void keyreleased(keyevent e) public void k

7、eytyped(keyevent e) -3、/*/package mvctest;/* 游戏的model类，负责所有游戏相关数据及运行* author wangyu* version 1.0* description:* * create on :date :2005-6-13 time:15:58:33* lastmodified:* history:*/snakemodel.javaimport javax.swing.*;import java.util.arrays;import java.util.linkedlist;import java.util.observable;imp

8、ort java.util.random;/* 游戏的model类，负责所有游戏相关数据及运行*/class snakemodel extends observable implements runnable boolean matrix; / 指示位置上有没蛇体或食物 linkedlist nodearray = new linkedlist(); / 蛇体 node food; int maxx; int maxy; int direction = 2; / 蛇运行的方向 boolean running = false; / 运行状态 int timeinterval = 200; / 时

9、间间隔，毫秒 double speedchangerate = 0.75; / 每次得速度变化率 boolean paused = false; / 暂停标志 int score = 0; / 得分 int countmove = 0; / 吃到食物前移动的次数 / up and down should be even / right and left should be odd public static final int up = 2; public static final int down = 4; public static final int left = 1; public s

10、tatic final int right = 3; public snakemodel( int maxx, int maxy) this.maxx = maxx; this.maxy = maxy; reset(); public void reset() direction = snakemodel.up; / 蛇运行的方向 timeinterval = 200; / 时间间隔，毫秒 paused = false; / 暂停标志 score = 0; / 得分 countmove = 0; / 吃到食物前移动的次数 / initial matirx, 全部清0 matrix = new

11、booleanmaxx; for (int i = 0; i 20 ? 10 : maxx / 2; nodearray.clear(); for (int i = 0; i initarraylength; +i) int x = maxx / 2 + i;/maxx被初始化为20 int y = maxy / 2; /maxy被初始化为30 /nodearrayx,y: 10,15-11,15-12，1520,15 /默认的运行方向向上，所以游戏一开始nodearray就变为： / 10，14-10，15-11，15-12，1519，15 nodearray.addlast(new nod

12、e(x, y); matrixxy = true; / 创建食物 food = createfood(); matrixfood.xfood.y = true; public void changedirection(int newdirection) / 改变的方向不能与原来方向同向或反向 if (direction % 2 != newdirection % 2) direction = newdirection; /* * 运行一次 * return */ public boolean moveon() node n = (node) nodearray.getfirst(); int

13、x = n.x; int y = n.y; / 根据方向增减坐标值 switch (direction) case up: y-; break; case down: y+; break; case left: x-; break; case right: x+; break; / 如果新坐标落在有效范围内，则进行处理 if (0 = x & x maxx) & (0 = y & y 0 ? scoreget : 10; countmove = 0; food = createfood(); / 创建新的食物 matrixfood.xfood.y = true; / 设置食物所在位置 retu

14、rn true; else / 吃到蛇体自身，失败 return false; else / 如果新坐标的点上没有东西（蛇体），移动蛇体 nodearray.addfirst(new node(x, y); matrixxy = true; n = (node) nodearray.removelast(); matrixn.xn.y = false; countmove+; return true; return false; / 触到边线，失败 public void run() running = true; while (running) try thread.sleep(timein

15、terval); catch (exception e) break; if (!paused) if (moveon() setchanged(); / model通知view数据已经更新 notifyobservers(); else joptionpane.showmessagedialog(null, you failed, game over, joptionpane.information_message); break; running = false; private node createfood() int x = 0; int y = 0; / 随机获取一个有效区域内的与

16、蛇体和食物不重叠的位置 do random r = new random(); x = r.nextint(maxx); y = r.nextint(maxy); while (matrixxy); return new node(x, y); public void speedup() timeinterval *= speedchangerate; public void speeddown() timeinterval /= speedchangerate; public void changepausestate() paused = !paused; public string to

17、string() string result = ; for (int i = 0; i nodearray.size(); +i) node n = (node) nodearray.get(i); result += + n.x + , + n.y + ; return result; class node int x; int y; node(int x, int y) this.x = x; this.y = y; -4、package mvctest;/snakeview.javaimport javax.swing.*;import java.awt.*;import java.u

18、til.iterator;import java.util.linkedlist;import java.util.observable;import java.util.observer;/* mvc模式中得viewer，只负责对数据的显示,而不用理会游戏的控制逻辑*/public class snakeview implements observer snakecontrol control = null; snakemodel model = null; jframe mainframe; canvas paintcanvas; jlabel labelscore; public sta

19、tic final int canvaswidth = 200; public static final int canvasheight = 300; public static final int nodewidth = 10; public static final int nodeheight = 10; public snakeview(snakemodel model, snakecontrol control) this.model = model; this.control = control; mainframe = new jframe(greedsnake); container cp = mainframe.getcontentpane(); / 创建顶部的分数显示 labelscore = new jlabel(score:); cp.add(labelscore, borderlayout.north); / 创建中间的游戏显示区域 paintcanvas = new canvas(); paintcanvas.setsize(canvaswidth + 1, canvasheight + 1); pa