java语言-俄罗斯方块Java源码案例

2019-11-14 21:58:54

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import java.awt.*;import java.applet.Applet;public class Blocks extends Applet implements Runnable{Dimension d;Font largefont= new Font("Helvetica", Font.BOLD, 28);Font smallfont= new Font("Helvetica", Font.BOLD, 10);Color textcolor1=new Color(96,128,255);Color textcolor2=new Color(255,160,64);FontMetrics fmsmall, fmlarge;Graphics goff;Image ii;Threadthethread;boolean ingame=false;final short xblocks=10;final short yblocks=20;final int blocksize=16;final int width=xblocks*blocksize;final int height=yblocks*blocksize;short[][] screendata;final short maxcolors=6;Color[] blocks;final int barwidth=8;final Color barcolor=new Color(128,255,64);final Color background=new Color(0,0,0);int score;short emptyline;int objectx, objecty;int objectx;short objecttype;short objectcolor;int objectrotation;int objectrotationd=0;short objectptr;short checkptr;final short itemcount=7;final short itemrotlen=8;final short itemlen=itemrotlen*4;short count;final short maxcount=5;short curcount;boolean fast=false;final short screendelay=40;short screencount=40;boolean showtitle=true;int items[]={0,0, -1,0, 0,-1, -1,-1, //四方形，正常状态0,0, -1,0, 0,1, -1,1, //被旋转90度0,0, 1,0, 0,1, 1,1,0,0, 1,0, 0,-1, 1,-1,0,0, 0,-1, 0,-2, 0,-3,0,0, -1,0, -2,0, -3,0,0,0, 0,1, 0,2, 0,3,0,0, 1,0, 2,0, 3,0,0,0, 1,0, 0,-1, -1,-1,0,0, 0,-1, -1,0, -1,1,0,0, -1,0, 0,1, 1,1,0,0, 0,1, 1,0, 1,-1,0,0, -1,0, 0,-1, 1,-1,0,0, 0,1, -1,0, -1,-1,0,0, 1,0, 0,1, -1,1,0,0, 0,-1, 1,0, 1,1,0,0, 1,0, -1,0, 0,-1,0,0, 0,1, 0,-1, -1,0,0,0, 0,1, -1,0, 1,0,0,0, 1,0, 0,-1, 0,1,0,0, 0,-1, 1,-1, 0,1,0,0, -1,0, -1,-1, 1,0,0,0, -1,1, 0,1, 0,-1,0,0, -1,0, 1,0, 1,1,0,0, 0,1, 0,-1, -1,-1,0,0, 1,0, -1,0, -1,1,0,0, 0,-1, 0,1, 1,1,0,0, -1,0, 1,0, 1,-1,};int checks[]={-1,1, 0,1, -1,1, 0,1,-1,2, 0,2, -1,2, 0,2,0,2, 1,2, 0,2, 1,2,0,1, 1,1, 0,1, 1,1,0,1, 0,1, 0,1, 0,1,0,1, -1,1, -2,1, -3,1,0,4, 0,4, 0,4, 0,4,0,1, 1,1, 2,1, 3,1,0,1, -1,0, 1,1, 0,1,0,1, -1,2, 0,1, -1,2,0,2, 1,2, -1,2, 0,2,0,2, 1,1, 0,2, 1,1,-1,1, 0,1, 1,0, 1,0,-1,1, 0,2, 0,2, -1,1,-1,2, 0,2, 1,1, 1,1,0,1, 1,2, 0,1, 1,2,-1,1, 0,1, 1,1, 1,1,-1,1, 0,2, 0,2, -1,1,-1,1, 0,2, 1,1, 1,1,0,2, 1,1, 0,2, 1,1,0,2, 1,0, 1,0, 0,2,-1,1, 0,1, 1,1, 1,1,-1,2, 0,2, 0,2, -1,2,-1,1, 0,1, 1,2, 1,2,-1,0, 0,2, 0,2, -1,0,-1,2, 0,1, 1,1, 1,1,0,2, 1,2, 1,2, 0,2,-1,1, 0,1, 1,1, 1,1,};public string getAppletInfo(){return("Blocks - by Ali");}//初始化appletpublic void init(){short i;screendata=new short[xblocks][yblocks];blocks=new Color[maxcolors+1];//设置背景色blocks[0]=background;//设置方块颜色blocks[1]=new Color(255,0,0);blocks[2]=new Color(0,255,0);blocks[3]=new Color(0,0,255);blocks[4]=new Color(255,255,0);blocks[5]=new Color(255,0,255);blocks[6]=new Color(0,255,255);Graphics g;resize(width+2*barwidth,height+30);d=size();setBackground(background);g=getGraphics();g.setFont(smallfont);fmsmall=g.getFontMetrics();g.setFont(largefont);fmlarge=g.getFontMetrics();gameInit();}//初始化游戏public boid gameInit(){short i,j;for(i=0;i<xblocks;i++){for(j=0;j<yblocks;j++){screendata[i][j]=0;}}score=0;emptyline=-1;newObject();fast=false;curcount=maxcount;}public void newObject(){short i;int y;objectx=xblocks/2-1;objectdx=0;objecty=0;objecttype=(short)(Math.random()*itemcount);if (objecttype>=itemcount)objecttype=itemcount-1;objectptr=(short)(objecttype*itemlen);checkptr=(short)(Mat.random()*maxcolors+1);if (objectcolor>maxcolors)objectcolor=maxcolors;objectrotation=0;count=maxcount;//判断游戏是否结束for(i=0;i<4;i++){y=items[objectptr+i*2+1];if(y>=0&&screendata[objectx+items[objectptr+i*2]][y]!=0){ingame=false;showtitle=true;}}}//判断键盘是否被按下,并且处理事件public boolean keyDown(Event e, int key){if(ingame){if(Key==Event.LEFT){objectdx=-1;}else if (Key==Event.RIGHT){objectdx=1;}else if (Key==Event.UP){objectrotationd=1;}else if (Key==Event.DOWN){fast=true;}else if (Key==Event.ESCAPE){ingame=false;}}else{if(Key==&PRime;s′||Key==′S′){ingame=true;gameInit();}}return true;}//处理键盘抬起事件public boolean keyUp(Event e, int key){if(Key==Event.DOWN){fast=false;}return true;}//paint()方法public void paint(Graphics g){Graphics gg;if (goff==null&&d.width>0&&d.height>0){ii=createImage(d.width, d.height);goff=ii.getGraphics();}if(goff==null||ii==null)return;//设置背景色goff.setColor(background);goff.fillRect(0, 0, d.width, d.height);//如果游戏已经开始if(ingame)//调用playGame()方法playGame();else//否则,显示其他信息//显示初始信息showIntro();// 显示得分showScore();g.drawImage(ii, 0, 0, this);}//实现游戏public void playGame(){boolean bottomreached=false;boolean stillscrolling=false;if(emptyline<0){bottomreached=drawObject();}else{scrollDown();stillscrolling=true;}drawBars();drawBlocks();if(stillscrolling||bottomreached){checkFull();}}//显示初始信息public void showIntro(){String s;drawBars();drawBlocks();if (showtitle){goff.setFont(largefont);s="俄罗斯方块"goff.setColor(textcolor1);goff.drawString(s, barwidth+(width-fmlarge.stringWidth(s))/2-2,height/2-22);goff.setColor(Color.white);goff.drawString(s, barwidth+(width-fmlarge.stringWidth(s))/2,height/2-20);}else{goff.setFont(smallfont);s="请按下′S′键开始游戏";goff.setColor(textcolor1);goff.drawString(s,barwidth+(width-fmsmall.stringWidth(s))/2-1,height/2-31);goff.setColor(Color.white);goff.drawString(s,barwidth+(width-fmsmall.stringWidth(s))/2,height/2-30);s="使用左右方向键控制运动";goff.setColor(textcolor2);goff.drawString(s,barwidth+(width-fmsmall.stringWidth(s))/2-1,height/2-11);goff.setColor(Color.white);goff.drawString(s,barwidth+(width-fmsmall.stringWidth(s))/2,height/2-10);s="使用向下的方向键实现旋转";goff.setColor(textcolor2);goff.drawString(s,barwidth+(width-fmsmall.stringWidth(s))/2-1,height/2+9);goff.setColor(Color.white);goff.drawString(s,barwidth+(width-fmsmall.stringWidth(s))/2,height/2+10);s="使用向下的方向键实现下降";goff.setColor(textcolor2);goff.drawString(s,barwidth+(width-fmsmall.stringWidth(s))/2-1,height/2+29);goff.setColor(Color.white);goff.drawString(s,barwidth+(width-fmsmall.stringWidth(s))/2,height/2+30);}screencount--;if(screencount<=0){ screencount=screendelay; showtitle=!showtitle; }}public void drawBars(){goff.setColor(barcolor);goff.fillRect(0,0,barwidth,blocksize*yblocks);goff.fillRect(barwidth+blocksize*xblocks,0,barwidth,blocksize*yblocks);goff.fillRect(0,blocksize*yblocks,xblocks*blocksize+2*barwidth,barwidth);}public boolean drawObject(){short i;boolean bottomreached=false;int x,y,checkx,checky;//清除旧图形for(i=0;i<4;i++){x=objectx+items[objectptr+i*2+objectrotation*itemrotlen];y=objecty+items[objectptr+i*2+objectrotation*itemrotlen+1];checkx=objectx+checks[objectptr+i*2+objectrotation*itemrotlen];checky=objecty+checks[objectptr+i*2+objectrotation*itemrotlen+1];if(y>=0)screendata[x][y]=0;if(screendata[checks][checky]!=0)bottomreached=true;}if(!bottomreached){count--;if(count<=0||fast){objecty++;count=curcount;}checkRotation();objectdx=0;objectrotationd=0;}//绘制新图形for(i=0;i<4;i++){x=objectx+items[objectptr+i*2+objectrotation*itemrotlen];y=objecty+items[objectptr+i*2+objectrotation*itemrotlen+1];if(y>=0)screendata[x][y]=objectcolor;if(y>=(yblocks-1))bottomreached=true;}if (bottomreached){score++;newObject();}return bottomreached;}public void checkRotation(){int dummyx;int dummyrot;int x,y;short i;boolean cando=true;dummyrot=(objectrotation+objectrotationd)%4;dummyx=objectx+objectdx;//确认该部分不会使屏幕旋转for(i=0;i<4;i++){x=dummyx+items[objectptr+i*2+dummyrot*itemrotlen];if(x>=xblocks)dummyx-=(x-xblocks+1);else if(x<0)dummyx-=x;}for(i=0;(i<4&&cando);i++){x=dummyx+items[objectptr+i*2+dummyrot*itemrotlen];y=objecty+items[objectptr+i*2+dummyrot*itemrotlen+1];if(y>=0)cando=cando&&(screendata[x][y]==0);if(y>=yblocks||x<0||x>=xblocks)cando=false;}if(cando){objectrotation=dummyrot;objectx=dummyx;}}public void drawBlocks(){short x,y;for(x=0;x<xblocks;x++){for(y=0;y<yblocks;y++){goff.setColor(blocks[screendata[x][y]]);goff.drawRect(x*blocksize+barwidth,y*blocksize,blocksize-1,blocksize-1);goff.fillRect(x*blocksize+barwidth+3,y*blocksize+3,blocksize-6,blocksize-6);}}}public void checkFull(){short x,y;boolean found=false;for(y=yblocks-1;(y>=0&&!found);y--){found=true;for(x=0;x<xblocks;x++){if(screendata[x][y]==0)found=false;}if(found){score+=10;//当用户的得分很多时,增加游戏速度if(score>800)curcount=1;else if(score>600)curcount=2;else if(score>400)curcount=3;else if(score>200)curcount=4;for(x=0;x<xblocks;x++){screendata[x][y]=0;}emptyline=y;}}}public void scrollDown(){short x,y;for(y=emptyline;y>0;y--){for(x=0;x<xblocks;x++){screendata[x][y]=screendata[x][y-1];}}for(x=0;x<xblocks;x++){screendata[x][0]=0;}emptyline=-1;}public void showScore(){String s;goff.setFont(smallfont);goff.setColor(Color.white);s="得分: "+score;goff.drawString(s,width/2-40,(yblocks+1)*blocksize+10);}public void run(){long starttime;Graphics g;Thread.currentThread().setPriorit(Thread.MAX_PRIORITY);g=getGraphics();while(true){starttime=System.currentTimeMillis();try{paint(g);starttime+=60;Thread.sleep(Math.max(0,starttime-System.currentTimeMillis()));}catch(InterruptedException e){break;}}}public void start(){if(thethread==null) {thethread=new Thread(this);thethread.start();}}public void stop(){if (thethread!=null) {thethread.stop();thethread=null;}}}

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