j2me之贪吃蛇源码(2个类)

本源码所用开发工具：netbean,如果你用的是eclipse完全可以移植过去〈首先配置好eclipse手机开发环境）1首先贪吃蛇“画布”类SnakeCanvas.java：importjava.util.Random。importjavax.microedition.lcdui.Canvas。/*Tochangethistemplate,chooseTools|Templatesandopenthetemplateintheeditor.*/importjavax.microedition.lcdui.Graphics。/***@authorAdministrator*/publicclassSnakeCanvasextendsCanvasimplementsRunnable{/**食物左上角X坐标*/privateintfoodX。/**食物左上角Y坐标*/privateintfoodY。/**食物的颜色值*/privateintfoodC。/**贪吃蛇：XYcolor三个属性故200*3*/privateint[]snake=newint[200*3]。/**食物宽*/privatefinalintSNAKE_W=5。/**食物长*/privatefinalintSNAKE_H=5。/**贪吃蛇长度即食物长度*/privateintsnakeNum。/**贪吃蛇移动方向*/privateintdirection。/**上*/privatefinalintDIR_UP=0。/**下*/privatefinalintDIR_DOWN=1。/**左*/privatefinalintDIR_LEFT=2。/**右*/privatefinalintDIR_RIGHT=3。Randomrandom=newRandom(＞。〃控制食物的随即出现privatefinalint[]COLOR={0xff0000,0x00ff00,0xffff00,0xff00ff,0x00ffff,0xff000f,0xffff00}。〃颜色数组，贪吃蛇颜色可选值privateThreadthread。privatebooleanisShow=true。〃控制线程变量privatebooleanisExit=false。〃游戏是否退出控制变量privateintSCREEN_W。〃屏幕宽privateintSCREEN_H。〃屏幕高publicSnakeCanvas(＞{SCREEN_W=this.getWidth(＞。SCREEN_H=this.getHeight(＞。/**初始化贪吃蛇长度以及初始位置*/snakeNum=7。for(inti=0。i＜snakeNum。i++＞{snake[i*3+0]=100-SNAKE_W*i。〃初始化蛇身每个食物的X坐标snake[i*3+1]=40。IN坐标snake[i*3+2]=COLOR[i%7]。}I**初始化方向右移*/direction=DIR_RIGHT。I**初始化食物坐标*/foodX=100。foodY=100。foodC=0xff。thread=newThread(this＞。thread.start(＞。〃启动线程}publicvoidrun(＞{while(true＞{while(isShow＞{longst=System.currentTimeMillis(＞。〃获取每一帧的开始时间main(＞。repaint(>。//serviceRepaints(>。//intct=(int>(System.currentTimeMillis(>-st>。〃main<)repaintv)方法执行所花费的时间if(ct<100>{try{Thread.sleep(300-ct>。}catch(InterruptedExceptionex>{ex.printStackTrace(>。}}}if(isExit>{//游戏退出SnakeMidlet.instance.exitAPP(>。}}}publicvoidmain(>{/**先判断能否吃到食物*/intstepX=0。//贪吃蛇下一步的位移量intstepY=0。//贪吃蛇下一步的位移量switch(direction>{caseDIR_UP:stepY=-SNAKE_H。break。caseDIR_DOWN:stepY=SNAKE_H。break。caseDIR_LEFT:stepX=-SNAKE_W。break。caseDIR_RIGHT:stepX=SNAKE_W。break。}/**得到蛇头的下一步位置*/intnewX=snake[0*3+0]+stepX。intnewY=snake[0*3+1]+stepY。//判断下一步是否有食物有则吞食并随机再在屏幕内、蛇身外生成新的食物if(newX==foodX&&newY==foodY>{snakeNum++。for(inti=snakeNum-1。i>0。i-->{snake[i*3+0]=snake[(i-1>*3+0]。snake[i*3+1]=snake[(i-1>*3+1]。snake[i*3+2]=snake[(i-1>*3+2]。}snake[0*3+0]=foodX。snake[0*3+1]=foodY。snake[0*3+2]=foodC。makeFood(>。}if(isGameOver(>>{isShow=false。isExit=true。return。}/***蛇身移动过程蛇身各个食物坐标传递过程。*/for(inti=snakeNum-1。i>0。i-->{snake[i*3+0]=snake[(i-1>*3+0]。snake[i*3+1]=snake[(i-1>*3+1]。}stepX=0。stepY=0。switch(direction>{caseDIR_UP:stepY=-SNAKE_H。break。caseDIR_DOWN:stepY=SNAKE_H。break。caseDIR_LEFT:stepX=-SNAKE_W。break。caseDIR_RIGHT:stepX=SNAKE_W。break。}snake[0*3+0]+=stepX。snake[0*3+1]+=stepY。}/***生成新的食物*/privatevoidmakeFood(>{//食物坐标：foodX=Math.abs(random.nextInt(>%(SCREEN_W-SNAKE_W+1>>/SNAKE_W*SNAKE_W。foodY=Math.abs(random.nextInt(>%(SCREEN_H-SNAKE_H+1>>/SNAKE_H*SNAKE_H。foodC=COLOR[Math.abs(random.nextInt(>%COLOR.length>]。}/**判断游戏是否结束结束条件：1蛇头超出边界；2蛇头碰到蛇身*/privatebooleanisGameOver(>{//边界判别if(snake[0*3+0]<0||snake[0*3+0]>(SCREEN_W-SNAKE_W>||snake[0*3+1]<0||snake[0*3+1]>(SCREEN_H-SNAKE_H>>{returntrue。}for(inti=4。i<snakeNum。i++>{if(snake[0*3+0]==snake[i*3+0]&&snake[0*3+1]==snake[i*3+1]>{returntrue。}}returnfalse。}/**绘制函数/protectedvoidpaint(Graphicsg>{/**首先是清屏即绘制和屏幕一样尺寸的白色填充矩形*/g.setColor(255,255,255＞。g.fillRect(0,0,SCREEN_W,SCREEN_H＞。//绘制贪吃蛇for(inti=0。ivsnakeNum。i++＞{drawSnake(g,snake[i*3+0],snake[i*3+1],snake[i*3+2]＞。}//绘制食物drawSnake(g,foodX,foodY,foodC＞。}/***控制贪吃蛇和食物；*/privatevoiddrawSnake(Graphicsg,intx,inty,intcolor＞{g.setColor(0xffffff＞。g.fillRect(x,y,SNAKE_W,SNAKE_H＞。g.setColor(color＞。g.fillRect(x+1,y+1,SNAKE_W-1,SNAKE_H-1＞。}/***事件处理*/protectedvoidkeyPressed(intkeyCode＞{intaction=this.getGameAction(keyCode＞。//改变方向＜如果在同一方向上移动同时不能反方向移动)switch(action＞{caseUP:if(direction!=DIR_DOWN＞{direction=DIR_UP。}break。caseDOWN:if(direction!=DIR_UP＞{direction=DIR_DOWN。}break。caseLEFT:if(direction!=DIR_RIGHT＞{direction=DIR_LEFT。}break。caseRIGHT:if(direction!=DIR_LEFT>{direction=DIR_RIGHT。}break。caseFIRE:isShow=!isShow。break。}}}2函数入口类SnakeMidlet.javaimportjavax.microedition.midlet.*。importjavax.microedition.lcdui.*。publicclassSnakeMidletextendsMIDlet{privateDisplaydisplay。privateSnakeCanvassnakeCanvas。publicstaticSnakeMidletinstance。publicSnakeMidlet(>{display=Display.getDi