swordstore.java

j2me手机游戏光盘文件 压缩包里有说明文件

import javax.microedition.rms.*;
import java.lang.String;
import java.io.*;
public class SwordStore
{
	private RecordStore rs=null;
	private byte[] data;
	public SwordStore()
	{
	}

	public  boolean open()
	{
		boolean canOpen=false;
		try
		{
			rs=RecordStore.openRecordStore("sword",true);
			RecordEnumeration re=rs.enumerateRecords(null,null,false);
			if(re.hasNextElement())
			canOpen=true;
			else
			canOpen=false;
			close();
		}
		catch(RecordStoreException rse)
		{
		}
		return(canOpen);
	}	

	public void save()
	{
		int i;
		data=new byte[35];		
		try
		{			
			data[0]=(byte)(MenuCanvas.swordCanvas.life>>8&0xff);
			data[1]=(byte)(MenuCanvas.swordCanvas.life&0xff);
			data[2]=(byte)(MenuCanvas.swordCanvas.energy>>8&0xff);
			data[3]=(byte)(MenuCanvas.swordCanvas.energy&0xff);
			data[4]=(byte)(MenuCanvas.swordCanvas.level);
			data[5]=(byte)(MenuCanvas.swordCanvas.skillpoint);
			data[6]=(byte)(MenuCanvas.swordCanvas.experience>>16&0xff);
			data[7]=(byte)(MenuCanvas.swordCanvas.experience>>8&0xff);
			data[8]=(byte)(MenuCanvas.swordCanvas.experience&0xff);
			data[9]=(byte)(MenuCanvas.swordCanvas.gold>>8&0xff);
			data[10]=(byte)(MenuCanvas.swordCanvas.gold&0xff);
			data[11]=(byte)((MenuCanvas.swordCanvas.isTask2?4:0)+(MenuCanvas.swordCanvas.isTask?2:0)+(MenuCanvas.swordCanvas.hasBoat?1:0));
			data[12]=(byte)(((MenuCanvas.swordCanvas.dlg[0]?1:0)<<6&0xff)+((MenuCanvas.swordCanvas.dlg[1]?1:0)<<5&0xff)
			+((MenuCanvas.swordCanvas.dlg[2]?1:0)<<4&0xff)+((MenuCanvas.swordCanvas.dlg[3]?1:0)<<3&0xff)+((MenuCanvas.swordCanvas.dlg[4]?1:0)<<2&0xff)
			+((MenuCanvas.swordCanvas.dlg[5]?1:0)<<1&0xff)+((MenuCanvas.swordCanvas.dlg[6]?1:0)&0xff));
			for(i=0;i<11;i++)
			data[13+i]=(byte)(MenuCanvas.swordCanvas.skillArray[i]);
			for(i=0;i<5;i++)
			data[24+i]=(byte)(MenuCanvas.swordCanvas.tn[i]);
			for(i=0;i<6;i++)
			data[29+i]=(byte)(MenuCanvas.swordCanvas.weapon[i]);														
			if(open())
			{
				delete();
				rs=RecordStore.openRecordStore("sword",true);
				rs.addRecord(data,0,data.length);	
				close();
			}
			else
			{
				rs=RecordStore.openRecordStore("sword",true);
				rs.addRecord(data,0,data.length);
				close();
			}
			data=null;		
		}
		catch(java.lang.NullPointerException npe)
		{
		}
		catch(javax.microedition.rms.RecordStoreException rec)
		{
		}
	}

	public void read()
	{
		int i;
		try
		{
			rs=RecordStore.openRecordStore("sword",true);
			data=new byte[35];			
			RecordEnumeration re=rs.enumerateRecords(null,null,false);
			int nx=re.nextRecordId();
			data=rs.getRecord(nx);
			MenuCanvas.swordCanvas.life=(data[0]<<8&0xff00)+(data[1]&0xff);
			MenuCanvas.swordCanvas.energy=(data[2]<<8&0xff00)+(data[3]&0xff);
			MenuCanvas.swordCanvas.level=data[4]&0xff;
			MenuCanvas.swordCanvas.skillpoint=data[5]&0xff;
			MenuCanvas.swordCanvas.experience=(data[6]<<16&0xff0000)+(data[7]<<8&0xff00)+(data[8]&0xff);
			MenuCanvas.swordCanvas.gold=(data[9]<<8&0xff00)+(data[10]&0xff);
			MenuCanvas.swordCanvas.isTask2=(data[11]>>2&0x00000001)==1?true:false;
			MenuCanvas.swordCanvas.isTask=(data[11]>>1&0x00000001)==1?true:false;
			MenuCanvas.swordCanvas.hasBoat=(data[11]&0x00000001)==1?true:false;
			for(i=0;i<7;i++)
			MenuCanvas.swordCanvas.dlg[i]=(data[12]>>(6-i)&0x00000001)==1?true:false;
			for(i=0;i<11;i++)
			MenuCanvas.swordCanvas.skillArray[i]=data[13+i]&0xff;
			for(i=0;i<5;i++)
			MenuCanvas.swordCanvas.tn[i]=data[24+i]&0xff;
			for(i=0;i<6;i++)
			MenuCanvas.swordCanvas.weapon[i]=data[29+i];
			data=null;
			close();
		}
		catch(Exception rse)
		{
			System.out.println(rse.toString());
		}					
	}		

	public void delete()
	{
		try
		{
			RecordStore.deleteRecordStore("sword");
		}
		catch(RecordStoreException e)
		{
			System.err.println(e.getMessage());
		}		
	}									        		
       
   	public void close()
    {
		try 
		{
	 		if(rs!=null)
	 	    	{
				rs.closeRecordStore();
	 	    	}		
		} 
		catch (RecordStoreException experience) 
		{
		}
   }		
}