bubblebreakercanvas.java

是sun公司做的开源项目

package org.bubblebreaker.view;

import org.bubblebreaker.model.*;
import org.bubblebreaker.config.*;
import javax.microedition.lcdui.Image;
import javax.microedition.lcdui.Graphics;
import javax.microedition.lcdui.game.*;
import javax.microedition.media.*;
import javax.microedition.media.control.*;
import javax.microedition.lcdui.Canvas;
import javax.microedition.lcdui.Font;

import java.io.IOException;

public class BubbleBreakerCanvas extends GameCanvas{

	int cRows= 10;
	int cColumns = 10;
	int nColors= 5;
	int colWidth = 18;
	int rowHeight = 18;
	boolean keeprunning = true;
	Model m_model;
	BlinkBall ballBlinker;
	public BubbleBreakerCanvas() {
		super(false);//check later
	}
	public void start() {
		Ball.createBalls(Settings.getBallsType());
		rowHeight=colWidth=Ball.REDBALL.getDiameter();

		nColors=Ball.balls.length;

		cColumns = (getWidth())/colWidth; //if last column is 75% of ball width we take it
		cRows = getHeight()/rowHeight;

		m_model = Model.createModel(cRows,cColumns,nColors, Settings.getModelBuilder());
		Graphics g=getGraphics();
		if(ballBlinker != null)
		{
			ballBlinker.stop();
		}
		ballBlinker =new BlinkBall(g,m_model);
		updateGameScreen(g, true);
	}
	void drawBall(Graphics g, int row, int col, Ball ball)
	{
		ball.draw(g,row,col,rowHeight,colWidth);
	}
	void updateGameScreen(Graphics g, boolean all) {
		if(all)
		{
			//create the background
			g.setColor(Color.GREY.getCode());
			g.fillRect(0,0,getWidth(),getHeight());
			g.setColor(Color.WHITE.getCode());
			g.fillRect(0,0,colWidth*cColumns,rowHeight*cRows);



			//draw balls
			for(int row=0;row<cRows;row++)
				for(int col=0;col<cColumns;col++)
				{
					drawBall(g, row, col, m_model.currentBoard.data[row][col]);
				}
		}
		
		//write score and time
		long timeElapsedMillis=System.currentTimeMillis() - m_model.startTimeInMillis;
		System.out.println("Time elapsed : "+timeElapsedMillis);
		
		String timeBuf;

		//ms
		timeBuf=""+timeElapsedMillis%1000;
		timeElapsedMillis/=1000;

		//seconds, minutes, hours
		for(int k=0;k<3;k++)
		{
			if(timeElapsedMillis==0)
			{
				break;
			}
			timeBuf=timeElapsedMillis%60+":"+timeBuf;
			timeElapsedMillis/=60;
		}

		//days
		if(timeElapsedMillis!=0)
		{
			timeBuf=timeElapsedMillis+":"+timeBuf;
		}

		setTitle("Bubble Breaker ("+m_model.getScore()+") "+timeBuf);
		/*
		g.setColor(Color.BLACK.getCode());
		System.out.println("writing score at "+colWidth/2+","+rowHeight/2);
		Font font=g.getFont();
		font = Font.getFont(font.getFace(),Font.STYLE_BOLD,Font.SIZE_LARGE);
		g.setFont(font);
		g.drawString(""+m_model.getScore(),5,5,g.LEFT|g.TOP);
		*/

		if(m_model.isGameEnded())
		{
			ballBlinker.stop();
			Font font=g.getFont();
			font = Font.getFont(font.getFace(),Font.STYLE_BOLD,Font.SIZE_LARGE);
			g.setFont(font);
			g.drawString("Final Score : "+m_model.getScore(),getWidth()/2-40,getHeight()/2-10,g.LEFT|g.TOP);
		}

		flushGraphics();
	}

	public final static int UP =1;
	public final static int DOWN =2;
	public final static int LEFT =3;
	public final static int RIGHT =4;
	public void keyPressed(int keyCode) {
		if(m_model.isGameEnded())
			return;
		Graphics g= getGraphics();
		System.out.println("key pressed : "+keyCode);
		//g.setColor(Color.BLACK.getCode());
		//g.drawString("key pressed : "+keyCode,colWidth/2,0,g.LEFT|g.TOP);
		boolean alreadyInFiredState=false;
		if(null!=m_model.currentBoard.selectedCells)
		{
			alreadyInFiredState=true;
		}
		switch (getGameAction(keyCode)) {
		case Canvas.UP:
			m_model.move(UP);
			break;
		case Canvas.DOWN:
			m_model.move(DOWN);
			break;
		case Canvas.LEFT:
			m_model.move(LEFT);
			break;
		case Canvas.RIGHT:
			m_model.move(RIGHT);
			break;
		case Canvas.FIRE:
			if(alreadyInFiredState)
			{
				m_model.deleteCells();
				updateGameScreen(getGraphics(),true);
				playMusic();
			}else
			{
				m_model.fire();
			}
			break;
		case 0:
			// There is no game action.. Use keypad constants instead
			switch (keyCode) {
			case Canvas.KEY_NUM2:
				m_model.move(UP);
				break;
			case Canvas.KEY_NUM8:
				m_model.move(DOWN);
				break;
			case Canvas.KEY_NUM4:
				m_model.move(LEFT);
				break;
			case Canvas.KEY_NUM6:
				m_model.move(RIGHT);
				break;
			case Canvas.KEY_NUM5:
				if(alreadyInFiredState)
				{
					m_model.deleteCells();
					updateGameScreen(getGraphics(),true);
					playMusic();
				}else
				{
					m_model.fire();
				}
				break;
			}
		break;
		}
		System.out.println(""+m_model.currentBoard.currentCell.row+","+m_model.currentBoard.currentCell.col);
		ballBlinker.restart();

		updateGameScreen(getGraphics(), false);

		System.out.println("done");
	}
	private void playMusic()
	{
		if(Settings.isMusicOff())
		{
			return;
		}
 		try {
			for(int i=60; i < 70; i+=2){
  				Manager.playTone(i, 50, 100);
  			}
 		} catch (MediaException me) { }
	}

	int m_level=5;
	public void setLevel(int level)
	{
		m_level=level;
		/*
		cRows=10*(m_level/5) + m_level%5;
		cColumns=cRows;
		*/
		System.out.println("new level : "+m_level+","+cRows+","+cColumns);
	}
	public int getLevel()
	{
		return m_level;
	}
	public void undo()
	{
		m_model.undo();
		updateGameScreen(getGraphics(),true);
	}
	public void changeBall()
	{
		m_model.changeBall();
		updateGameScreen(getGraphics(),true);
	}
class BlinkBall extends java.util.TimerTask{
	java.util.Timer timer;
	Graphics g;
	Model model;
	boolean blinkStateShow=false;
	java.util.Vector cellsToRedraw=new java.util.Vector();
	public BlinkBall(Graphics g, Model model)
	{
		this.g=g;
		this.model=model;
		blinkStateShow=false;
		timer=new java.util.Timer();
		timer.scheduleAtFixedRate(this,0,1500);
	}
	public void stop()
	{
		if(null!=timer)
			timer.cancel();
		redrawCells();
	}
	public void redrawCells()
	{
		int size=cellsToRedraw.size();
		System.out.println("Redrawing "+size+" cells");
		for(int i=0;i<size;i++)
		{
			Cell cell = (Cell)cellsToRedraw.elementAt(i);
			drawBall(g, cell.row, cell.col, model.currentBoard.data[cell.row][cell.col]);
		}
		cellsToRedraw.removeAllElements();
	}
	void blinkBall(Cell cell)
	{
		if(blinkStateShow)
		{
			model.currentBoard.data[cell.row][cell.col].draw(g,cell.row,cell.col);
			cellsToRedraw.removeElement(cell);
		}else
		{
			Ball.FUNNYBALL.draw(g,cell.row,cell.col);
			/*g.setColor(Color.WHITE.getCode());
			g.fillRect(
					cell.col*colWidth,
					cell.row*rowHeight,
					Ball.REDBALL.getDiameter(), Ball.REDBALL.getDiameter());
					*/
			cellsToRedraw.addElement(cell);
		}
	}
	public void restart()
	{
		blinkStateShow=false;
		run();
	}
	public void run()
	{
		redrawCells();
		if(model.currentBoard.selectedCells!=null)
		{
			int size=model.currentBoard.selectedCells.length;
			for(int i=0;i<size;i++)
			{
				Cell cell=model.currentBoard.selectedCells[i];
				blinkBall(cell);
			}
		}else
		{
			Cell cell=model.currentBoard.currentCell;
			blinkBall(cell);
		}
		flushGraphics();
		blinkStateShow=!blinkStateShow;
	}
}
}