drawboard.java

小子快跑

import javax.microedition.lcdui.*;
//Download by http://www.codefans.net
public class DrawBoard extends mmae.ui.Base
{
   	public static final int UP = 0;
   	public static final int DOWN = 1;
   	public static final int LEFT = 2;
   	public static final int RIGHT = 3;   	

	private int offSetV,offSetH;
	private Image img;
	private int way,oldWay;
	private boolean is360D;
   	private int imgWidth,imgHeight;
   	private int speed=1;
   	private boolean auto = true;

	public DrawBoard(Image image)
	{
		img = image;
    	imgWidth = img.getWidth();
    	imgHeight = img.getHeight();
    	offSetH = offSetV = 0;
    	is360D = true;
    	way = oldWay = LEFT;
	}
	
	public boolean isAuto()
	{
		return auto;
	}
	
	public void setAuto(boolean Auto)
	{
		auto = Auto;
	}
	
	public void set360(boolean Is360)
	{
		is360D = Is360;
	}
	
	public boolean is360()
	{
		return is360D;
	}
	
	public void setSpeed(int i)
	{
		speed = i;
	}
	
	public int getSpeed()
	{
		return speed;
	}
	
	public void setWay(int Way)
	{
		if (way==2 || way==3) oldWay=way;
		way = Way;
	}
	
	public int getWay()
	{
		return way;
	}
	
	public void move()
	{	
		switch(way)
		{
			case UP://UP
				if( offSetH<0 ) 
					offSetH+=speed;
				else
					if(oldWay==2 || oldWay==3)
						setWay(oldWay);
				break;
			case DOWN://DOWN
				if( offSetH>height-imgHeight )
					offSetH-=speed;
				else
					if(oldWay==2 || oldWay==3)
						setWay(oldWay);					
				break;
			case LEFT://LEFT
				if(is360D)
				{
					offSetV-=speed;
					if( offSetV<(width-imgWidth) ) offSetV=width;								
				}
				else
					if( offSetV<0 ) offSetV+=speed;
				break;
			case RIGHT://RIGHT
				if(is360D)
				{
					offSetV+=speed;
					if( offSetV>imgWidth) offSetV=0;					
				}
				else
					if( offSetV>width-imgWidth ) offSetV-=speed;
				break;
		}
	}
	
    public void draw(Graphics g)
    {
        int i1 = g.getClipX();
        int j1 = g.getClipY();
        int k1 = g.getClipWidth();
        int l1 = g.getClipHeight();
	   	
		g.setClip(left,top,width,height);
    	for(int i=0;i<=width/imgWidth+1;i++)
    		g.drawImage(img,offSetV-i*imgWidth+left,offSetH+top,g.TOP|g.LEFT);
    	
    	g.setClip(i1,j1,k1,l1);
    }		
	
}