pintu.java

制作拼图游戏,执行本程序后

import java.awt.*;
import java.applet.*;
import java.awt.event.* ;

public class pintu extends Applet	implements 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_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 boolean 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 Image[16];		
		off_buf = new Graphics [16];
		map = new int [4][4];
		ran = new int [15];
		
		for(int a=0;a<16;a++)
			map[a/4][a%4] = a;		
		for(int a=0;a<15;a++)
			ran[a]=a;
		click=new boolean [4][4];
		
		MediaTracker tracker= new MediaTracker (this);
		
		//要载入的图片
		pic[0]=getImage(getCodeBase(),"PICTURE0.JPG");
		pic[1]=getImage(getCodeBase(),"PICTURE1.JPG");
		pic[2]=getImage(getCodeBase(),"PICTURE2.GIF");
		tracker.addImage (pic[0],0);
		tracker.addImage (pic[1],0);
		tracker.addImage (pic[2],0);		
		try{
			tracker.waitForID (0);
		}catch(InterruptedException e){}
	
		//设置字体
		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();
		
		//添加鼠标监听事件
		addMouseListener(this);
		addMouseMotionListener(this);		
	}
	
	//面板初始化
	void initForm()
	{
		this.setBackground (Color.orange);
		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<4;b++)
				{
					if(map[a][b]!=15)
						off_buffer.drawImage (off_pic[map[a][b]],b*width/4,a*height/4,this);
					if(map[a][b]==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(click[a][b])
					{
						off_buffer.setColor(Color.red);
						for(int d=0;d<2;d++)
						off_buffer.drawOval (b*width/4-d,a*height/4-d,width/4+d,height/4+d);
						off_buffer.setColor (Color.black );				
					}
				}
		}
		else{
			off_buffer.setColor (Color.orange );
			off_buffer.fillRect (0,0,640,480);
			off_buffer.setFont (font1);
			off_buffer.setColor(Color.red );
			off_buffer.drawImage (pic[2],30,50,250,180,this);			
			off_buffer.drawImage (pic[0],370,160,250,180,this);
			off_buffer.drawImage (pic[1],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 ());
	}

	//单击鼠标时产生的事件
	public void mouseClicked(MouseEvent evt){}
	
	//鼠标进入某个区域时产生的事件
	public void mouseEntered(MouseEvent evt){}
	
	//鼠标退出某个区域时产生的事件
	public void mouseExited(MouseEvent evt){}
	
	//移动鼠标时产生的事件
	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.orange );
				off_buffer.fillRect (0,0,640,480);
				off_buffer.setFont (font1);
				off_buffer.drawImage (pic[2],25,45,250,180,this);			
				off_buffer.drawImage (pic[0],370,160,250,180,this);
				off_buffer.drawImage (pic[1],60,270,250,180,this);				
				off_buffer.setColor(Color.black );
				off_buffer.fillRect (30,225,250,5);
				off_buffer.fillRect (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_buffer.fillRect (0,0,640,480);
				off_buffer.setFont (font1);
				off_buffer.drawImage (pic[2],30,50,250,180,this);			
				off_buffer.drawImage (pic[0],365,155,250,180,this);
				off_buffer.drawImage (pic[1],60,270,250,180,this);				
				off_buffer.setColor(Color.black );
				off_buffer.fillRect (370,335,250,5);
				off_buffer.fillRect (615,160,5,175);
				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.fillRect (0,0,640,480);
				off_buffer.setFont (font1);
				off_buffer.drawImage (pic[2],30,50,250,180,this);			
				off_buffer.drawImage (pic[0],370,160,250,180,this);
				off_buffer.drawImage (pic[1],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_buffer.setColor(Color.red );
				off_buffer.drawString ("picture 1!",320,100);	
				this.getGraphics ().drawImage (off_screen,0,0,this);								   							
			}	
			else{
				repaint();
			}
		}
	}	
	
	//拖动鼠标时产生的事件
	public void mouseDragged(MouseEvent evt){
		if(!able)
			return;
		if(m_down){	
			Point point;
			Point temp;
			point=evt.getPoint();
			m_drag=true;
			repaint();
			Graphics david = this.getGraphics ();
			if(!not_redraw)
				off_drag_buf.drawImage (off_pic[map[last_downy][last_downx]],0,0,this);							 
			david.drawImage (off_drag,point.x+stepx,point.y+stepy,this);
			not_redraw=true;
		}	
	}		
		
	//按下鼠标时产生的事件
	public void mousePressed(MouseEvent evt){
		if(!able)
			return;
		Point point;
		Point temp;
		point=evt.getPoint();
		if(getarea(point) == point)
			return;
		else {
			temp=getarea(point);
			if(!m_down){
				if(map[temp.y][temp.x]==15)
					return;
				else{
					m_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;
			}
		}
	}

	//放开鼠标时产生的事件
	public void mouseReleased(MouseEvent evt){
	if(able){
		if(m_drag){
			m_down=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(map[temp.y][temp.x]!=15){
					repaint();return;}
				else{
						if(Math.abs (last_downx-temp.x)==1 && last_downy-temp.y==0)
						{
							int david;
							david=map[last_downy][last_downx];						
							map[last_downy][last_downx] =15;
							map[temp.y][temp.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=map[last_downy][last_downx];						
							map[last_downy][last_downx] =15;
							map[temp.y][temp.x]=david;
							if(wingame())
								able=false;							
							repaint();
							return;
						}
						else{repaint(); return;}
				}
			}
		}
	}
		else{
			Point 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 && point.x<310 && point.y>270 && point.y<450)
			{able=true;initmap(1);}
			else return;
		}
	}
	
	//转换坐标
	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);			
	}
	
	//图片初始化
	void initmap(int stage){
		picture = createImage(width,height);
		buffer = picture.getGraphics ();
		buffer.drawImage (pic[stage],0,0,640,480,this);
	
		for(int a=0;a<15;a++)
		{
				off_pic[a] = createImage(width/4,height/4);
				off_buf[a] = off_pic[a].getGraphics ();
				off_buf[a].drawImage (picture,0,0,width/4,height/4,
							(a%4)*width/4,(a/4)*height/4,(a%4+1)*width/4,(a/4+1)*height/4,this);
		}					
		initgame();
		repaint();
	}
	
	//程序是否结束
	boolean wingame(){
		for(int a=0;a<4;a++)
			for(int b=0;b<4;b++)
			{
				if(map[a][b]==a*4+b)
					;
				else return false;
			}
		return true;
	}
	
	//游戏初始化
	void initgame(){		
		for(int a=0;a<4;a++)
			for(int b=0;b<4;b++)
			{
				if(!(a==3 && b==3)){
					map[a][b] = (int)(Math.random()*14);
					if(ran[map[a][b]]==-1)
					{
						int temp=map[a][b];
						while(ran[temp]==-1){
							temp++;
							if(temp>14)
								temp=0;
						}
						map[a][b]=ran[temp];
						ran[temp]=-1;
					}
					else{
						ran[map[a][b]]=-1;
					}
				}
				else map[3][3] = 15;
			}
	}
}