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/*
Copyright (C) 1997-2001 Id Software, Inc.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
// Created on 24.07.2004 by RST.
// $Id: QuakeFile.java,v 1.3 2004-09-10 19:02:56 salomo Exp $
package jake2.util;
import jake2.game.Game;
import jake2.game.SuperAdapter;
import jake2.game.edict_t;
import jake2.game.gitem_t;
import jake2.qcommon.Com;
import java.io.*;
/**
* RandomAccessFile, but handles readString/WriteString specially and
* offers other helper functions
*/
public class QuakeFile extends RandomAccessFile
{
/** Standard Constructor.*/
public QuakeFile(String filename, String mode) throws FileNotFoundException
{
super(filename, mode);
}
/** Writes a Vector to a RandomAccessFile. */
public void writeVector(float v[]) throws IOException
{
for (int n= 0; n < 3; n++)
writeFloat(v[n]);
}
/** Writes a Vector to a RandomAccessFile. */
public float[] readVector() throws IOException
{
float res[]= { 0, 0, 0 };
for (int n= 0; n < 3; n++)
res[n]= readFloat();
return res;
}
/** Reads a length specified string from a file. */
public String readString() throws IOException
{
int len= readInt();
if (len == -1)
return null;
if (len == 0)
return "";
byte bb[]= new byte[len];
super.read(bb, 0, len);
return new String(bb, 0, len);
}
/** Writes a length specified string to a file. */
public void writeString(String s) throws IOException
{
if (s == null)
{
writeInt(-1);
return;
}
writeInt(s.length());
if (s.length() != 0)
writeBytes(s);
}
/** Writes the edict reference. */
public void writeEdictRef(edict_t ent) throws IOException
{
if (ent == null)
writeInt(-1);
else
{
writeInt(ent.s.number);
}
}
/**
* Reads an edict index from a file and returns the edict.
*/
public edict_t readEdictRef() throws IOException
{
int i= readInt();
// handle -1
if (i < 0)
return null;
if (i > Game.g_edicts.length)
{
Com.DPrintf("jake2: illegal edict num:" + i + "\n");
return null;
}
// valid edict.
return Game.g_edicts[i];
}
/** Writes the Adapter-ID to the file. */
public void writeAdapter(SuperAdapter a) throws IOException
{
writeInt(3988);
if (a == null)
writeString(null);
else
{
String str= a.getID();
if (a == null)
{
Com.DPrintf("writeAdapter: invalid Adapter id for " + a + "\n");
}
writeString(str);
}
}
/** Reads the adapter id and returns the adapter. */
public SuperAdapter readAdapter() throws IOException
{
if (readInt() != 3988)
Com.DPrintf("wrong read position: readadapter 3988 \n");
String id= readString();
if (id == null)
{
// null adapter. :-)
return null;
}
return SuperAdapter.getFromID(id);
}
/** Writes an item reference. */
public void writeItem(gitem_t item) throws IOException
{
if (item == null)
writeInt(-1);
else
writeInt(item.index);
}
/** Reads the item index and returns the game item. */
public gitem_t readItem() throws IOException
{
int ndx= readInt();
if (ndx == -1)
return null;
else
return Game.itemlist[ndx];
}
}
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