Java程序設(shè)計制作拼圖游戲

1、java程序設(shè)計實例：制作拼圖游戲本例知識點一句話講解新學(xué)知識使用image類導(dǎo)入圖片使用mouseevent類處理鼠標(biāo)事件已學(xué)知識使用point類轉(zhuǎn)換坐標(biāo)使用graphics類管理屏幕顯示一、練習(xí)具體要求本練習(xí)制作拼圖游戲，運行效果如圖99-1所示。執(zhí)行本實例后，用鼠標(biāo)拖動選中的小圖片進(jìn)行拼接，可以拼成一幅完整的圖片。本實例的知識點有：鼠標(biāo)事件的監(jiān)聽，graphics類和image類的應(yīng)用。二、程序及注釋（1）編程思路：本練習(xí)因為要制作拼圖游戲，所以首先要實現(xiàn)圖片的導(dǎo)入。這是通過getimage()函數(shù)來實現(xiàn)的，該函數(shù)有兩個參數(shù)，第一個參數(shù)指明圖片的路徑，第二個參數(shù)指明圖片的名稱。然后，因為

2、要實現(xiàn)圖片擺放的隨意性，所以要通過initgame()函數(shù)來實現(xiàn)。initgame()函數(shù)是自寫函數(shù)，在函數(shù)體內(nèi)，通過調(diào)用math.random()函數(shù)產(chǎn)生隨機數(shù)，用來達(dá)到圖片位置擺放的隨意性和隨機性。最后，因為要實現(xiàn)人機交互.，所以首先要通過一系列函數(shù)來實現(xiàn)對鼠標(biāo)事件的監(jiān)聽和響應(yīng)，這是通過函數(shù)addmouselistener(this) 和addmousemotionlistener(this)來完成的。這樣程序會區(qū)分用戶對鼠標(biāo)不同的操作，正確執(zhí)行相應(yīng)的功能。 (2) 程序?qū)崿F(xiàn)及注釋：import java.awt.*;import java.applet.*;import java.awt

3、.event.* ;public class pintu extends appletimplements mouselistener,mousemotionlistener private image picture;private graphics buffer;private image pic;private image off_pic;private graphics off_buf;private image off_screen;private graphics off_buffer;private image off_drag;private graphics off_drag

4、_buf;private int map;private int ran;private int width=0;private int height=0;private int lastx;private int lasty;private int last_downx;private int last_downy;private int stepx;private int stepy;private boolean choose;private boolean click;private boolean m_down;private boolean m_drag;private boole

5、an not_redraw;private boolean able;font font1,font2;/程序的初始化public void init()resize(640,480);pic = new image 3;off_pic = new image16;off_buf = new graphics 16;map = new int 44;ran = new int 15;for(int a=0;a<16;a+)mapa/4a%4 = a;for(int a=0;a<15;a+)rana=a;click=new boolean 44;mediatracker tracke

6、r= new mediatracker (this);/要載入的圖片pic0=getimage(getcodebase(),"picture0.jpg");pic1=getimage(getcodebase(),"picture1.jpg");pic2=getimage(getcodebase(),"picture2.gif");tracker.addimage (pic0,0);tracker.addimage (pic1,0);tracker.addimage (pic2,0);trytracker.waitforid (0);c

7、atch(interruptedexception e)/設(shè)置字體font1= new font ("timesroman", font.bold, 48);font2= new font ("timesroman", font.bold, 32);width=640;height=480;/初始化主界面initform();/添加鼠標(biāo)監(jiān)聽事件addmouselistener(this);addmousemotionlistener(this);/面板初始化void initform()this.setbackground (color.orange);

8、if(off_drag=null)off_drag = createimage(width/4,height/4);off_drag_buf = off_drag.getgraphics ();public void paint(graphics g)if(off_screen=null)off_screen = createimage(width,height);off_buffer=off_screen.getgraphics ();if(able)off_buffer.setcolor (color.black );for(int a=0;a<4;a+)for(int b=0;b&

9、lt;4;b+)if(mapab!=15)off_buffer.drawimage (off_picmapab,b*width/4,a*height/4,this);if(mapab=15)off_buffer.fillrect (b*width/4,a*height/4,width/4,height/4);for(int c=0;c<2;c+)off_buffer.drawrect (b*width/4+c,a*height/4+c,width/4-c,height/4-c);if(clickab)off_buffer.setcolor(color.red);for(int d=0;d

10、<2;d+)off_buffer.drawoval (b*width/4-d,a*height/4-d,width/4+d,height/4+d);off_buffer.setcolor (color.black );elseoff_buffer.setcolor (color.orange );off_buffer.fillrect (0,0,640,480);off_buffer.setfont (font1);off_buffer.setcolor(color.red );off_buffer.drawimage (pic2,30,50,250,180,this);off_buff

11、er.drawimage (pic0,370,160,250,180,this);off_buffer.drawimage (pic1,60,270,250,180,this);off_buffer.drawstring ("choose one!",320,100);g.drawimage (off_screen,0,0,this); public void repaint()paint(this.getgraphics ();/單擊鼠標(biāo)時產(chǎn)生的事件public void mouseclicked(mouseevent evt)/鼠標(biāo)進(jìn)入某個區(qū)域時產(chǎn)生的事件public

12、void mouseentered(mouseevent evt)/鼠標(biāo)退出某個區(qū)域時產(chǎn)生的事件public void mouseexited(mouseevent evt)/移動鼠標(biāo)時產(chǎn)生的事件public void mousemoved(mouseevent evt)if(!able)point point;point=evt.getpoint();if(point.x >30 && point.x<280 && point.y>50 && point.y<230)off_buffer.setcolor (color.

13、orange );off_buffer.fillrect (0,0,640,480);off_buffer.setfont (font1);off_buffer.drawimage (pic2,25,45,250,180,this);off_buffer.drawimage (pic0,370,160,250,180,this);off_buffer.drawimage (pic1,60,270,250,180,this);off_buffer.setcolor(color.black );off_buffer.fillrect (30,225,250,5);off_buffer.fillre

14、ct (275,50,5,176);off_buffer.setcolor(color.red );off_buffer.drawstring ("picture 2!",320,100);this.getgraphics ().drawimage (off_screen,0,0,this); else if(point.x >370 && point.x<620 && point.y>160 && point.y<340)off_buffer.setcolor (color.orange );off_

15、buffer.fillrect (0,0,640,480);off_buffer.setfont (font1);off_buffer.drawimage (pic2,30,50,250,180,this);off_buffer.drawimage (pic0,365,155,250,180,this);off_buffer.drawimage (pic1,60,270,250,180,this);off_buffer.setcolor(color.black );off_buffer.fillrect (370,335,250,5);off_buffer.fillrect (615,160,

16、5,175);off_buffer.setcolor(color.red );off_buffer.drawstring ("picture 0!",320,100);this.getgraphics ().drawimage (off_screen,0,0,this); else if(point.x >60 && point.x<310 && point.y>270 && point.y<450)off_buffer.setcolor (color.orange );off_buffer.fillr

17、ect (0,0,640,480);off_buffer.setfont (font1);off_buffer.drawimage (pic2,30,50,250,180,this);off_buffer.drawimage (pic0,370,160,250,180,this);off_buffer.drawimage (pic1,55,265,250,180,this);off_buffer.setcolor(color.black );off_buffer.fillrect (60,445,250,5);off_buffer.fillrect (305,270,5,175);off_bu

18、ffer.setcolor(color.red );off_buffer.drawstring ("picture 1!",320,100);this.getgraphics ().drawimage (off_screen,0,0,this); elserepaint();/拖動鼠標(biāo)時產(chǎn)生的事件public void mousedragged(mouseevent evt)if(!able)return;if(m_down)point point;point temp;point=evt.getpoint();m_drag=true;repaint();graphics

19、david = this.getgraphics ();if(!not_redraw)off_drag_buf.drawimage (off_picmaplast_downylast_downx,0,0,this); david.drawimage (off_drag,point.x+stepx,point.y+stepy,this);not_redraw=true;/按下鼠標(biāo)時產(chǎn)生的事件public void mousepressed(mouseevent evt)if(!able)return;point point;point temp;point=evt.getpoint();if(g

20、etarea(point) = point)return;else temp=getarea(point);if(!m_down)if(maptemp.ytemp.x=15)return;elsem_down=true;last_downx=temp.x;last_downy=temp.y;stepx=temp.x*160-point.x;stepy=temp.y*120-point.y;else if(m_down)m_down=false;/放開鼠標(biāo)時產(chǎn)生的事件public void mousereleased(mouseevent evt)if(able)if(m_drag)m_down

21、=false;m_drag=false;not_redraw=false;point point;point temp;point=evt.getpoint();if(getarea(point) = point)repaint();return;else temp=getarea(point);if(maptemp.ytemp.x!=15)repaint();return;elseif(math.abs (last_downx-temp.x)=1 && last_downy-temp.y=0)int david;david=maplast_downylast_downx;ma

22、plast_downylast_downx =15;maptemp.ytemp.x=david;if(wingame()able=false;repaint();return;else if(last_downx-temp.x=0 && math.abs (last_downy-temp.y)=1)int david;david=maplast_downylast_downx;maplast_downylast_downx =15;maptemp.ytemp.x=david;if(wingame()able=false;repaint();return;elserepaint(

23、); return;elsepoint point;point=evt.getpoint();if(point.x >30 && point.x<280 && point.y>50 && point.y<230)able=true;initmap(2);if(point.x >370 && point.x<620 && point.y>160 && point.y<340)able=true;initmap(0);if(point.x >60 &

24、amp;& point.x<310 && point.y>270 && point.y<450)able=true;initmap(1);else return;/轉(zhuǎn)換坐標(biāo)public point getarea(point point)if(point.x>640 | point.y>480)return point;else return point = new point (point.x/160,point.y/120);/圖片初始化void initmap(int stage)picture = createima

25、ge(width,height);buffer = picture.getgraphics ();buffer.drawimage (picstage,0,0,640,480,this);for(int a=0;a<15;a+)off_pica = createimage(width/4,height/4);off_bufa = off_pica.getgraphics ();off_bufa.drawimage (picture,0,0,width/4,height/4,(a%4)*width/4,(a/4)*height/4,(a%4+1)*width/4,(a/4+1)*heigh

26、t/4,this);initgame();repaint();/程序是否結(jié)束boolean wingame()for(int a=0;a<4;a+)for(int b=0;b<4;b+)if(mapab=a*4+b);else return false;return true;/游戲初始化void initgame()for(int a=0;a<4;a+)for(int b=0;b<4;b+)if(!(a=3 && b=3)mapab = (int)(math.random()*14);if(ranmapab=-1)int temp=mapab;while(rantemp=-1)temp+;if(temp>14)temp=0;mapab=rantemp;rantemp=-1;elseranmapab=-1;else map33 = 15;三、練習(xí)效