grids.java

J2ME编程的50个例子,适合掌上系统的编程

package demo;
import javax.microedition.lcdui.Graphics;
import javax.microedition.lcdui.Image;
import javax.microedition.lcdui.game.TiledLayer;

public class Grids {
	private TiledLayer		m_BuidingTL;					//不能通过的格子
	private TiledLayer		m_BeanTL;						//可通过的格子，上面有豆
	
	//构造方法，参数scrWidth、scrHeight分别是屏幕的宽和高
	public Grids( int scrWidth, int scrHeight ){
		try{
			//读取Tile图片
			Image img = Image.createImage("/demo/grid.png");
			m_BuidingTL = new TiledLayer( 9, 9, img, 15, 15  );
			m_BeanTL = new TiledLayer( 9, 9, img, 15, 15  );
			int x = scrWidth/2 - m_BeanTL.getWidth()/2;
			int y = scrHeight/2 - m_BeanTL.getHeight()/2;
			m_BuidingTL.setPosition(x, y);
			m_BeanTL.setPosition(x, y);
		}
		catch(Exception exception){}
	}
	//重新设置背景格子
	public void Reset(){
		int a[][] = 
		{ { 1, 1, 1, 1, 0, 1, 1, 1, 1 },
		  { 1, 0, 2, 2, 2, 2, 2, 0, 1 },
		  { 1, 2, 4, 1, 2, 1, 4, 2, 1 },
		  { 1, 2, 1, 1, 2, 1, 1, 2, 1 },
		  { 0, 3, 2, 2, 0, 2, 2, 3, 0 },
		  { 1, 2, 1, 1, 2, 1, 1, 2, 1 },
		  { 1, 2, 4, 1, 2, 1, 4, 2, 1 },
		  { 1, 0, 2, 2, 2, 2, 2, 0, 1 },
		  { 1, 1, 1, 1, 0, 1, 1, 1, 1 } };
		for( int col = 0; col < a[0].length; col ++ ){
			for( int row = 0; row < a.length; row ++ ){
				if( a[row][col] == 1 ){
					m_BuidingTL.setCell(col, row, a[row][col] );
					m_BeanTL.setCell(col, row, 0 );
				}
				else{
					m_BuidingTL.setCell(col, row, 0 );
					m_BeanTL.setCell(col, row, a[row][col] );
				}
			}
		}
	}
	//获取不能通过的格子对象
	public TiledLayer getBuiding(){
		return m_BuidingTL;
	}
	//获取有豆的格子对象
	public TiledLayer getBeanTL(){
		return m_BeanTL;
	}
	//获取背景左上角的X坐标
	public int getX(){
		return m_BeanTL.getX();
	}
	//获取背景左上角的Y坐标
	public int getY(){
		return m_BeanTL.getY();
	}
	//获取背景宽度
	public int getWidth(){
		return m_BeanTL.getWidth();
	}
	//获取背景高度
	public int getHeight(){
		return m_BeanTL.getHeight();
	}
	//获取单元格子的宽度
	public int getCellWidth(){
		return m_BeanTL.getCellWidth();
	}
	//获取单元格子的高度
	public int getCellHeight(){
		return m_BeanTL.getCellHeight();
	}
	//显示背景格子
	public void Paint(Graphics g){
		m_BeanTL.paint(g);
		m_BuidingTL.paint(g);
	}
}