boardview.java

这是个j2me的手机炸弹人JAVA源码好游戏

package com.mot.j2me.midlets.jbombman;

import javax.microedition.lcdui.*;

public class BoardView extends Canvas {
	private Board oBoard;
	private Player oPlayer;
	private Enemy oEnemy;
	
	private final int BackgroundColor = 0xffffff;
	private final int iCellSize = 20;
	private final int iLeft = 10;
	private final int iTop = 10;
	
	public BoardView( Board board ) {
		oBoard = board;
	}
	
	public void setPlayer( Player player ) {
		oPlayer = player;
	}
	
	public void setEnemy( Enemy enemy ) {
		oEnemy = enemy;
	}
	
	public void paint( Graphics g ) {
		synchronized( g ) {
			if( oBoard.isGameOver )
				paintGameOver( g );
			else if( oBoard.isWin )
				paintWin( g );
			else
				paintBoard( g );
		}
	}
	
	private void paintGameOver( Graphics g ) {
		g.drawImage( Img.imgGameOver, 60, 100, Graphics.LEFT|Graphics.TOP );
	}
	
	private void paintWin( Graphics g ) {
		g.drawImage( Img.imgCongratulation, 60, 100, Graphics.LEFT|Graphics.TOP );
	}
	
	private void paintFrame( Graphics g ) {
		g.drawRect( 0, 0, 239, 239 );
		g.drawRect( 1, 1, 237, 237 );
		g.drawRect( 2, 2, 235, 235 );
		g.drawRect( 3, 3, 233, 233 );

		g.drawRect( 7, 7, 225, 225 );
		g.drawRect( 8, 8, 223, 223 );
	}
	
	private void paintBoard( Graphics g ) {
		if( g.getClipX() == 0 )
			paintFrame( g );
	
		int x = ( g.getClipX() - iLeft ) / iCellSize;
		int y = ( g.getClipY() - iTop ) / iCellSize;
		int w = g.getClipWidth() / iCellSize;
		int h = g.getClipHeight() / iCellSize;

		System.out.println( "paint: x=" + x + ", y=" + y 
								+ ", w=" + w + ", h=" + h );
		
		if( h>oBoard.iRows )
			h = oBoard.iRows;
		
		for( int i=x; i<x+w; i++ )
			for( int j=y; j<y+h; j++ )
				switch( oBoard.chBoard[i][j] ) {
				  case 'N': //N - None
					g.setColor( BackgroundColor );
					g.fillRect( iLeft + i*iCellSize, iTop + j*iCellSize, 
									iCellSize, iCellSize );
					break;
				  case 'W': //W - Wall
					g.drawImage( Img.imgWall, iLeft + i*iCellSize, iTop + j*iCellSize, 
									Graphics.LEFT|Graphics.TOP );
					break;
				  case 'L': //L - Pillar
					g.drawImage( Img.imgPillar, iLeft + i*iCellSize, iTop + j*iCellSize, 
									Graphics.LEFT|Graphics.TOP );
					break;
				  case 'P': //P - Player
				  case 'U': //U - Bomb under player
					g.drawImage( Img.imgPlayer, iLeft + i*iCellSize, iTop + j*iCellSize, 
									Graphics.LEFT|Graphics.TOP );
					break;
				  case 'E': //E - Enemy
					g.drawImage( Img.imgEnemy, iLeft + i*iCellSize, iTop + j*iCellSize, 
									Graphics.LEFT|Graphics.TOP );
					break;
				  case 'B': //B - Bomb
					g.drawImage( Img.imgBomb, iLeft + i*iCellSize, iTop + j*iCellSize, 
									Graphics.LEFT|Graphics.TOP );
					break;
				  case 'X': //X - Exploding
					g.drawImage( Img.imgExploding, iLeft + i*iCellSize, iTop + j*iCellSize, 
									Graphics.LEFT|Graphics.TOP );
					break;
				}
	}
	
	public void keyPressed( int code ) {
		if( oBoard.isGameOver||oBoard.isWin )
			keyForInit( getGameAction(code) );
		else
			keyForPlay( getGameAction(code) );
	}

	private void keyForInit( int action ) {
		if( action != FIRE )
			return;
		
		oBoard.init();
		oEnemy.init();
		oPlayer.init();
		
		repaint();
	}

	private void keyForPlay( int action ) {
		switch( action ){
		  case FIRE:
			oPlayer.fire();
			break;
		  case LEFT:
			oPlayer.left();
			break;
		  case RIGHT:
			oPlayer.right();
			break;
		  case UP:
			oPlayer.up();
			break;
		  case DOWN:
			oPlayer.down();
			break;
		}
	}
	
	public void repaintCells( int x, int y, int w, int h ) {
		if( x < 0 )
			x = 0;
	
		if( x >= oBoard.iCols )
			x = oBoard.iCols - 1;
		
		if( x + w > oBoard.iCols )
			w = oBoard.iCols - x;
		
		if( y < 0 )
			y = 0;
	
		if( y >= oBoard.iRows )
			y = oBoard.iRows - 1;
		
		if( y + h > oBoard.iRows )
			h = oBoard.iRows - y;
		
		repaint( iLeft + x*iCellSize, iTop + y*iCellSize, 
					w*iCellSize, h*iCellSize );
	}
}