shrimpplayer.java

刚刚编的j2me 小游戏

import javax.microedition.lcdui.game.Layer;
import javax.microedition.lcdui.game.LayerManager;
import javax.microedition.lcdui.game.Sprite;


public class ShrimpPlayer extends Sprite 
{
	public final static int Shrimp_UP=0;
	public final static int Shrimp_DOWN=1;
	public final static int Shrimp_LEFT=3;
	public final static int Shrimp_RIGHT=2;
	
	private LayerManager lm;
	
	int dir=Shrimp_UP;
	
	private int step=16;
	
	private int[][] Shrimpapp=
					{
						{0,1},
						{2,3},
						{4,5},
						{6,7}			
					};
	
	public ShrimpPlayer(LayerManager lm) 
	{
		super(ShrimpImage.shrimp,16,16);
		this.lm=lm;
		this.changeDir(dir);
		new TankScroll().start();
	}
	
	public void setLayer(LayerManager lm)
	{
		this.lm=lm;
	}
	
	class TankScroll extends Thread
	{
		public void run()
		{
			while(true)
			{
				ShrimpPlayer.this.nextFrame();
				try 
				{
					Thread.sleep(500);
				} catch (InterruptedException e) 
				{
					e.printStackTrace();
				}
			}
		}
	}
	
	public void changeDir(int dir)
	{
		this.dir=dir;
		switch(dir)
		{		
			case Shrimp_UP:
				this.setFrameSequence(Shrimpapp[0]);
				break;
			case Shrimp_DOWN:
				this.setFrameSequence(Shrimpapp[1]);
				break;
			case Shrimp_LEFT:
				this.setFrameSequence(Shrimpapp[3]);
				break;
			case Shrimp_RIGHT:
				this.setFrameSequence(Shrimpapp[2]);
				break;
		}	
	}
	
	public void move(LayerManager lm)
	{
		switch(dir)
		{
			case Shrimp_UP:
				this.move(0,-step);
				break;
			case Shrimp_DOWN:
				this.move(0,step);
				break;
			case Shrimp_LEFT:
				this.move(-step,0);
				break;
			case Shrimp_RIGHT:
				this.move(step,0);
				break;
		}
		
		if(isTouch(lm))
		{
			moveR();
		}
	}
	
	public void moveR()
	{
		switch(dir)
		{
			case Shrimp_UP:
				this.move(0,step);
				break;
			case Shrimp_DOWN:
				this.move(0,-step);
				break;
			case Shrimp_LEFT:
				this.move(step,0);
				break;
			case Shrimp_RIGHT:
				this.move(-step,0);
				break;
		}	
	}
	
	public boolean isTouch(LayerManager lm)
	{
		boolean re=false;
		for(int i=0;i<lm.getSize();i++)
		{
			{
				Layer ly=lm.getLayerAt(i);
				if(ly instanceof ShrimpLayer) 
				{
					ShrimpLayer sl = (ShrimpLayer)ly;
					if(sl.getName().equals("Wall"))
					{
						if(this.collidesWith(sl,false))
						{
							re=true;
							break;
						}
					}
				}
			}
		}
		return re;
	}
	
	public boolean isDead(LayerManager lm)
	{
		boolean re=false;
		for(int i=0;i<lm.getSize();i++)
		{
			{
				Layer ly=lm.getLayerAt(i);
				if(ly instanceof ShrimpLayer) 
				{
					ShrimpLayer sl = (ShrimpLayer)ly;
					if(sl.getName().equals("Lava"))
					{
						if(this.collidesWith(sl,false))
						{
							re=true;
							break;
						}
					}
				}
			}
		}
		return re;
	}
	
	public boolean ishome(LayerManager lm)
	{
		boolean re=false;
		for(int i=0;i<lm.getSize();i++)
		{
			{
				Layer ly=lm.getLayerAt(i);
				if(ly instanceof ShrimpLayer) 
				{
					ShrimpLayer sl = (ShrimpLayer)ly;
					if(sl.getName().equals("Home"))
					{
						if(this.collidesWith(sl,false))
						{
							re=true;
							break;
						}
					}
				}
			}
		}
		return re;
	}	
}