aimanager.java

一款新手改造的J2me手机游戏项目

package com.ejoy;


import java.util.Random;
import java.util.Vector;

import javax.microedition.lcdui.Image;

//Download by http://www.codefans.net


public class AIManager implements Runnable
{
	public Vector m_NPCPool; 
	public int m_currentXPos;
	private MySprite m_role;//主角精灵
	
	
	public final static int npcNum=2;//npc总量
	public Random rd;//随机量
	
	//两精灵在x轴，y轴的最小间距
	public final static int ySpace=50;
	public final static int xSpace=30;
	
	//移动速度
	public final int npcSpeed=3;
	
	
	public int frame=0;
	
	public AIManager(MySprite ms)
	{
		m_NPCPool=new Vector();
		m_role=ms;
		rd=new Random();
		System.out.println("AIManager构造函数！");
	}
	
	public void setCurrentXPos()
	{
		m_currentXPos=m_role.getRefPixelY();
	}
	
	
	public void run()
	{
		System.out.println("AIManager::run()函数");
		while(true)
		{
						
			createNPCCondition();
			long lastTime=System.currentTimeMillis();
			logic();
			long currentTime=System.currentTimeMillis();
			int esp=(int)(currentTime-lastTime);
			if(esp<1000/GameMIDlet.FPS)
			{
				try
				{
					Thread.sleep(1000/GameMIDlet.FPS-esp);
				}
				catch(Exception e)
				{
					e.printStackTrace();
				}
			}
		}
	}
	
	
	//npc出现条件，根据主角行走的位移决定
	public void createNPCCondition()
	{	
		setCurrentXPos();
		switch(m_currentXPos)
		{
			case GameMIDlet.SCREEN_HEIGHT/2:
				createNPC();
				initNPCPosition();
				break;
			case GameMIDlet.SCREEN_HEIGHT:
				if(m_NPCPool.isEmpty())
				{				
					createNPC();
					initNPCPosition();
				}
				break;
			case GameMIDlet.SCREEN_HEIGHT*3/2:
				if(m_NPCPool.isEmpty())
				{
					createNPC();
					initNPCPosition();
				}
				break;				
		}
	}
	
	//产生npc，包括产生兵种类型及个数，总数不超过3个，
	public void createNPC() 
	{
		System.out.println("createNPC函数");
		int npcNameStyle=rd.nextInt(4)+2;
		int npcnum=rd.nextInt(npcNum)+1;
		try
		{
			switch(npcNameStyle)
			{
				
					case MySprite.NPC_CB:
						for(int i=1;i<=npcnum;i++)
							m_NPCPool.addElement(new MySprite(Image.createImage(GameMIDlet.PATH_CB_STAND),MySprite.NPC_CB_SPWIDTH,MySprite.NPC_CB_SPHEIGHT,MySprite.NPC_CB));
						break;
					case MySprite.NPC_DB:
						for(int i=1;i<=npcnum;i++)
							m_NPCPool.addElement(new MySprite(Image.createImage(GameMIDlet.PATH_DB_STAND),MySprite.NPC_DB_SPWIDTH,MySprite.NPC_DB_SPHEIGHT,MySprite.NPC_DB));
						break;
					case MySprite.NPC_TM:
						for(int i=1;i<npcnum;i++)
							m_NPCPool.addElement(new MySprite(Image.createImage(GameMIDlet.PATH_TM_STAND),MySprite.NPC_TM_SPWIDTH,MySprite.NPC_TM_SPHEIGHT,MySprite.NPC_TM));
						break;
					case MySprite.NPC_ZL:
						m_NPCPool.addElement(new MySprite(Image.createImage(GameMIDlet.PATH_ZL_STAND),MySprite.NPC_ZL_SPWIDTH,MySprite.NPC_ZL_SPHEIGHT,MySprite.NPC_ZL));
						break;
				
			}
		}
		catch(Exception e)
		{
			e.printStackTrace();
		}
	}
	
	//初始化npc精灵的初始位置
	public void initNPCPosition()
	{
		System.out.println("initNPCPosition函数");
		MySprite tmp=null;
		int rondomX=rd.nextInt(GameMIDlet.SCREEN_WIDTH-tmp.spriteWidth);//npc随机出现的宽度值
		if(!m_NPCPool.isEmpty())
		{
			for(int i=0;i<m_NPCPool.size();i++)
			{
				tmp=(MySprite)m_NPCPool.elementAt(i);
				tmp.setRefPixelPosition(GameMIDlet.SCREEN_WIDTH-tmp.spriteWidth/2-rondomX, GameMIDlet.SCREEN_HEIGHT-tmp.spriteHeight/2);
			}
		}
	}
	
	
	//AI action
	public void logic()
	{
		System.out.println("logic函数");
		MySprite tmp=null;
		if(!m_NPCPool.isEmpty())
		{
			for(int i=0;i<m_NPCPool.size();i++)
			{
				int dir=rd.nextInt(2);
				tmp=(MySprite)m_NPCPool.elementAt(i);
				switch(dir)
				{
					case 0://x方向					
						for(int j=0;j<3;j++)//防止频繁的改变方向
						{
							if(tmp.getXDistanceFromSprite(m_role)>npcSpeed)
							{
								tmp.changeToWalkSprite();
								tmp.setRefPixelPosition(tmp.getRefPixelX()-npcSpeed, tmp.getRefPixelY());
							}
							if(tmp.getXDistanceFromSprite(m_role)<-npcSpeed)
							{
								tmp.changeToWalkSprite();
								tmp.setRefPixelPosition(tmp.getRefPixelX()+npcSpeed, tmp.getRefPixelY());
							}

						}
						break;
					case 1://y方向
						for(int j=0;j<5;j++)//防止频繁的改变方向
						{
							if(tmp.getYDistanceFromSprite(m_role)>npcSpeed)
							{
								tmp.setRefPixelPosition(tmp.getRefPixelX(),tmp.getRefPixelY()-npcSpeed);							
							}
							if(tmp.getYDistanceFromSprite(m_role)<-npcSpeed)
							{
								tmp.setRefPixelPosition(tmp.getRefPixelX(), tmp.getRefPixelY()+npcSpeed);
							}
						}
						break;
						
				}
				tmp.setFrame((frame++)%tmp.getFrameSequenceLength());
				
			}
		}
		
	}
	
	
	public boolean adjustAndCollision()
	{
		return false;
	}

}