gamecanvas.java

俄罗斯方块游戏J2ME手机游戏源代码_俄罗斯方块

		
		repaint();
	}
	public void addscore( int number)
	{
		score += number ;
		repaint();
	}
	public void left()
	{
		int tempx , tempy ;
		int i , j;
		tempx = this.currentblockx - 1 ;
		tempy = this.currentblocky ;
		
		//看看有没有超过左边的边界
		
		if( tempx < 0)
		{
			int outcount = -tempx - 1 ;//出来的那一列部分
			for( j = 0; j < 4 ; j ++ )
				if(this.currentblock[j][outcount] == 1)
					return ;
		}
		
		//加入没有出界的话就检测有没有和其他的相碰
		
		 for( j = 0; j < 4; j ++ ) //|
			for( i = 0; i < 4 ; i ++)//-
			{
				if( this.currentblock[j][i] == 0 )
					continue ;
				if(tempx + i > 9 || tempx + i < 0)
					continue ;
				if( tempy + j > 17 || tempy + j < 0)
					continue ;
				if( chess[tempx + i][tempy + j] == 1 )
					return ;
			}
		
		//加入左边没有什么问题的话，就开始往左移动
		this.currentblockx -- ;
		repaint();
		
	}
	public void right()
	{
		int tempx , tempy ;
		int i , j;
		tempx = this.currentblockx + 1 ;
		tempy = this.currentblocky ;
		
		//看看有没有超过右边的边界
		
		if( tempx + 3 > 9)
		{
			int outcount = 10 - tempx ;//出来的那一列部分
			for( j = 0; j < 4 ; j ++ )
				if(this.currentblock[j][outcount] == 1)
					return ;
			
		}
		
		//加入没有出界的话就检测有没有和其他的相碰
		
		for( j = 0; j < 4; j ++ )
			for( i = 0; i < 4; i ++)
			{
				if( this.currentblock[j][i] == 0 )
					continue ;
				if(tempx + i > 9 || tempx + i < 0)
					continue ;
				if( tempy + j > 17 || tempy + j < 0)
					continue ;
				
				if( chess[tempx + i][tempy + j] == 1 )
					return ;
			}
		
		//加入左边没有什么问题的话，就开始往左移动
		this.currentblockx ++ ;
		repaint();
	}
	
	public void Timerrun()
	{
		if( this.currentstate != this.GAME_START)
			return ;
		Timercount = ( Timercount + 1 ) % level ;
		if(Timercount == 0)
		{
			if(!down())
			this.getnextblock() ;
		}
	}
	
	public boolean down()
	{
		int tempx , tempy ;
		int i , j;
		tempx = this.currentblockx  ;
		tempy = this.currentblocky + 1;
		
		//看看有没有超过下边的边界
		
		if( tempy + 3 > 17)
		{
			int outcount = 18 - tempy ;//出来的那一列部分
			for( j = 0; j < 4 ; j ++ )
				if(this.currentblock[outcount][j] == 1)
					return false;
			
		}
		
		//加入没有出界的话就检测有没有和其他的相碰
		
		for( j = 0; j < 4; j ++ )
			for( i = 0; i < 4; i ++)
			{
				if( this.currentblock[j][i] == 0 )
					continue ;
				if(tempx + i > 9 || tempx + i < 0)
					continue ;
				if( tempy + j > 17 || tempy + j < 0)
					continue ;
				
				if( chess[tempx + i][tempy + j] == 1 )
					return false;
			}
		
		//加入左边没有什么问题的话，就开始往左移动
		this.currentblocky ++  ;
		
		repaint();
		return true ;
	}
	public GameCanvas()
	{
		
		
		
		//读取图片数据
		int i , j;
		for( i = 0 ;i < 10; i ++)
			for( j = 0; j < 18; j ++)
				chess[i][j] = 0 ;
		if( !readpictures())
		{
			currentstate = this.GAME_ERR;
			return ;
		}
		//初始化数据
		wide = this.getWidth() ;
		height = this.getHeight() ;
		 
		if(wide > imageground.getWidth())
		{
			backgroundx = ( wide - imageground.getWidth()) / 2 ;
			backgroundy = ( height - imageground.getHeight()) / 2 ;
		}
		else
		{
			backgroundx = backgroundy = 0 ;
		}
		
		offscreen = Image.createImage(wide,height);
		//产生下一个方块
		this.createnextblock() ;
		this.getnextblock() ;
//		初始化当前的方块，并且产生下一个方块
		this.updatecurrentblock() ;
		
		//test	
		
		timer = new Timer();
		gametask = new GameTask(this);
		timer.schedule(gametask, 300, 300);
		
		this.addCommand(pausecommand);
		this.addCommand(exitcommand) ;
		
		this.setCommandListener(this);
		
	}
	
	public GameCanvas( Block block)
	{
		this.block = block ;
//		读取图片数据
		int i , j;
		for( i = 0 ;i < 10; i ++)
			for( j = 0; j < 18; j ++)
				chess[i][j] = 0 ;
		if( !readpictures())
		{
			currentstate = this.GAME_ERR;
			return ;
		}
		//初始化数据
		wide = this.getWidth() ;
		height = this.getHeight() ;
		 
		if(wide > imageground.getWidth())
		{
			backgroundx = ( wide - imageground.getWidth()) / 2 ;
			backgroundy = ( height - imageground.getHeight()) / 2 ;
		}
		else
		{
			backgroundx = backgroundy = 0 ;
		}
		
		offscreen = Image.createImage(wide,height);
		//产生下一个方块
		this.createnextblock() ;
		this.getnextblock() ;
//		初始化当前的方块，并且产生下一个方块
		this.updatecurrentblock() ;
		
		//test	
		
		timer = new Timer();
		gametask = new GameTask(this);
		timer.schedule(gametask, 300, 300);
		
		this.addCommand(pausecommand);
		this.addCommand(exitcommand) ;
		
		this.setCommandListener(this);
	}
	public  void gamestart( Graphics g)
	{
		int i , j ;
			
		Graphics gg = offscreen.getGraphics() ;
		this.clearCanvas(gg);
		gg.drawImage(imageground,backgroundx,backgroundy,0);
		//gg.setColor(175,75,168);
		gg.setColor(this.colorlib[this.currentcolor][0],this.colorlib[this.currentcolor][1],this.colorlib[this.currentcolor][2]);
		
		for( i = 0 ;i < 4 ; i ++ )
			for( j = 0 ; j < 4 ; j ++ )
				if( this.currentblock[i][j] == 1)
				{
					gg.fillRect(convertx(this.currentblockx+j),converty(this.currentblocky+i),7,7);
				}
		for( i = 0 ;i < 10 ;i ++)
			for( j = 0 ; j < 18 ;j ++)
				if( chess[i][j] == 1)
				{
					gg.setColor(this.colorlib[this.chesscolor[i][j]][0],this.colorlib[this.chesscolor[i][j]][1],this.colorlib[this.chesscolor[i][j]][2]);
					gg.fillRect(convertx(i),converty(j),7,7);
				}

		drawscore(gg) ;
		drawnextblock(gg);
		
		g.drawImage(offscreen,0,0,0);
	}
	protected void paint(Graphics g) {
		// TODO Auto-generated method stub
		switch( currentstate)
		{
			case 0:  // GAME_START
				gamestart(g);
				break ;
			case 1://GAME_PAUSE:
				break ;
			case 2://GAME_HIGHLIGHT:
				break ;
			
			case 3://GAME_EXIT:
				break ;
			case 4://GAME_ERR:
				break ;
			case 5: //GAME_OVER
				char Buffer[] = {'G','a','m','e',' ','O','v','e','r','!'};
				g.drawChars(Buffer,0,9,wide/2-20,height/2,0);
				this.removeCommand(pausecommand) ;
		}
	}
	
	
	protected synchronized void keyPressed(int keyCode)
	{
		int i ;
		if(this.currentstate != GAME_START) return ;
	    switch(this.getGameAction(keyCode))
		 {
			 case Canvas.LEFT:
				 left();
				 break ;
			 case Canvas.RIGHT:
				 right();
				 break ;
			 case Canvas.UP:
				 turn();
				 break ;
			 case Canvas.DOWN:
				 while(true)
				 {
					 if( !down() )
						 break;
				 }
				 this.getnextblock() ;
				 
				
		 }
	    
	   
		//System.out.print(this.currentblockx + ":" + this.currentblocky);
		///System.out.println("AND "+this.currentblocklibx+":"+this.currentblockliby);
	}
	
	public void pause()
	{
		 this.currentstate = this.GAME_PAUSE ;
	}
	public void start()
	{
		this.currentstate = this.GAME_START ;
	}
	 public void commandAction(Command c, Displayable d)
	 {
	    	if(c.getLabel().equals("Start"))
	    	{
	    		this.removeCommand(startcommand) ;
	    		this.addCommand(pausecommand) ;
	    		this.start();
	    		repaint() ;
	    	}
	    	else if(c.getLabel().equals("Pause"))
	    	{
	    		this.pause() ;
	    		this.removeCommand(pausecommand) ;
	    		this.addCommand(startcommand) ;
	    	}
	    	else if(c.getLabel().equals("Exit"))
	    	{
	    		block.mangeaction(2,1);
	    	}
	 }
}