gamestore.java

J2ME开发的手机游戏需要安装诺基亚手机模拟器才能正常运行

package org.gamecollege.j2me.rpg;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.util.Vector;

import javax.microedition.rms.RecordStore;
import javax.microedition.rms.RecordStoreException;
import javax.microedition.rms.RecordStoreNotFoundException;

/**
 * 游戏存储类
 *
 */
public class GameStore {
	
	MyGameCanvas mgc;
	public GameStore(MyGameCanvas _mgc){
		mgc=_mgc;
	}
	
	/**
	 * 是否有存盘
	 * @return
	 */
	
	public boolean canLoad(){
		try {
			String[] ds=RecordStore.listRecordStores();
			if(ds==null||ds.length==0){
				return false;
			}else{
				for (int i = 0; i < ds.length; i++) {
					if(ds[i].equals("TXWW")){
						return true;
					}
				}
				
				return false;
			}
		} catch (Exception e) {
			return false;
		}
	}
	
	/**
	 * 删除存盘
	 *
	 */
	
	public void deleteRecord(){
		try {
			RecordStore.deleteRecordStore("TXWW");
		} catch (RecordStoreNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (RecordStoreException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
	
	
	/**
	 * 游戏存盘
	 *
	 */
	public void saveGame(){
		try {
			RecordStore rs=RecordStore.openRecordStore("TXWW",true);
			ByteArrayOutputStream baos=new ByteArrayOutputStream();
			DataOutputStream dos=new DataOutputStream(baos);
			//关卡号
			dos.writeInt(mgc.curLevelNo);
			//地图号
			dos.writeInt(mgc.curLevel.curMap.mapNo);
			//英雄位置
			
			dos.writeInt(mgc.myPlayer.col);
			dos.writeInt(mgc.myPlayer.row);
			//速度
			dos.writeInt(mgc.myPlayer.rate);
			//money
			dos.writeInt(mgc.myPlayer.money);
			//hp
			dos.writeInt(mgc.myPlayer.hp);
			//mp
			dos.writeInt(mgc.myPlayer.mp);
			
			//exp
			dos.writeInt(mgc.myPlayer.exp);
			
			//rank
			
			dos.writeInt(mgc.myPlayer.rank);
			
			//nextExp
			dos.writeInt(mgc.myPlayer.nextExp);
			
			//attackPoint
			dos.writeInt(mgc.myPlayer.attackPoint);
			//defendPoint
			dos.writeInt(mgc.myPlayer.defendPoint);
			
			//当前武器
			dos.writeInt(mgc.myPlayer.curWeaponID);
			//当前护具
			dos.writeInt(mgc.myPlayer.curDefendID);
			//道具和技能
			StringBuffer sb=new StringBuffer();
			Vector v=mgc.myPlayer.weaponVec;
			for (int i = 0; i < v.size(); i++) {
				RPGObject ro=(RPGObject)v.elementAt(i);
				sb.append(ro.ID+"|");
			}
			v=mgc.myPlayer.jacketVec;
			for (int i = 0; i < v.size(); i++) {
				RPGObject ro=(RPGObject)v.elementAt(i);
				sb.append(ro.ID+"|");
			}
			
			v=mgc.myPlayer.medicVec;
			for (int i = 0; i < v.size(); i++) {
				RPGObject ro=(RPGObject)v.elementAt(i);
				sb.append(ro.ID+"|");
			}
			dos.writeUTF(sb.toString());
			
			sb.delete(0,sb.length());
			v=mgc.myPlayer.skillVec;
			for (int i = 0; i < v.size(); i++) {
				RPGObject ro=(RPGObject)v.elementAt(i);
				sb.append(ro.ID+"|");
			}
			dos.writeUTF(sb.toString());
			
			dos.close();
			byte[] data=baos.toByteArray();
			if(rs.getNumRecords()>1){
				rs.setRecord(1,data,0,data.length);
			}else{
				
				rs.addRecord(data,0,data.length);
			}
			
			rs.closeRecordStore();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
	
	/**
	 * 读取存盘
	 *
	 */
	
	public void loadGame(){
		try {
			RecordStore rs=RecordStore.openRecordStore("TXWW",false);
			byte[] data=rs.getRecord(1);
			ByteArrayInputStream bais=new ByteArrayInputStream(data);
			DataInputStream dis=new DataInputStream(bais);
			if(mgc.curLevel==null){
				mgc.curLevel=new Level();
			}
			mgc.curLevel.levelNo=dis.readInt();
			mgc.curLevel.curMapNo=dis.readInt();
			mgc.myPlayer.col=dis.readInt();
			mgc.myPlayer.row=dis.readInt();
			mgc.myPlayer.rate=dis.readInt();
			mgc.myPlayer.money=dis.readInt();
			mgc.myPlayer.hp=dis.readInt();
			mgc.myPlayer.mp=dis.readInt();
			mgc.myPlayer.exp=dis.readInt();
			mgc.myPlayer.rank=dis.readInt();
			
			mgc.myPlayer.nextExp=dis.readInt();
			mgc.myPlayer.attackPoint=dis.readInt();
			mgc.myPlayer.defendPoint=dis.readInt();
			mgc.myPlayer.curWeaponID=dis.readInt();
			mgc.myPlayer.curDefendID=dis.readInt();
			
			mgc.myPlayer.propertyIDs=dis.readUTF();			
			mgc.myPlayer.skillIDs=dis.readUTF();
			
			dis.close();
			rs.closeRecordStore();
			LevelLoader.instance.loadLevel(mgc.curLevel);
			
			
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

}