/* Copyright (C) 1994-2003 Revolution Software Ltd
*
* 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.
*
* $Header$
*/
#include <stdio.h>
//#include <windows.h>
#include "stdafx.h"
//#include "src\driver96.h"
#include "console.h"
#include "debug.h"
#include "defs.h"
#include "header.h"
#include "logic.h"
#include "memory.h"
#include "protocol.h"
#include "resman.h"
//-----------------------------------------------------------------------------------------------------------------------
// returns a pointer to the first palette entry, given the pointer to the start of the screen file
// assumes it has been passed a pointer to a valid screen file
uint8 *FetchPalette(uint8 *screenFile) // Chris 04Oct96
{
uint8 *palette;
_multiScreenHeader *mscreenHeader = (_multiScreenHeader *) (screenFile + sizeof(_standardHeader));
palette = (uint8 *)mscreenHeader + mscreenHeader->palette;
palette[0] = 0; // always set colour 0 to black
palette[1] = 0; // because most background screen palettes have a bright colour 0
palette[2] = 0; // although it should come out as black in the game!
palette[3] = 0;
return palette;
}
//-----------------------------------------------------------------------------------------------------------------------
// returns a pointer to the start of the palette match table, given the pointer to the start of the screen file
// assumes it has been passed a pointer to a valid screen file
uint8 *FetchPaletteMatchTable(uint8 *screenFile) // James 09dec96
{
_multiScreenHeader *mscreenHeader = (_multiScreenHeader *) (screenFile + sizeof(_standardHeader));
return (uint8 *) mscreenHeader + mscreenHeader->paletteTable;
}
//-----------------------------------------------------------------------------------------------------------------------
// returns a pointer to the screen header, given the pointer to the start of the screen file
// assumes it has been passed a pointer to a valid screen file
_screenHeader *FetchScreenHeader(uint8 *screenFile) //Chris 04Oct96
{
// Get the table
_multiScreenHeader *mscreenHeader = (_multiScreenHeader *) (screenFile + sizeof(_standardHeader));
return (_screenHeader*) ((uint8 *) mscreenHeader + mscreenHeader->screen);
}
//-----------------------------------------------------------------------------------------------------------------------
// returns a pointer to the requested layer header, given the pointer to the start of the screen file
// drops out if the requested layer number exceeds the number of layers on this screen
// assumes it has been passed a pointer to a valid screen file
_layerHeader *FetchLayerHeader(uint8 *screenFile, uint16 layerNo) //Chris 04Oct96
{
_screenHeader *screenHead;
screenHead = FetchScreenHeader(screenFile);
#ifdef _SWORD2_DEBUG
if (layerNo > (screenHead->noLayers-1)) // layer number too large!
Con_fatal_error("FetchLayerHeader(%d) invalid layer number! (%s line %u)",layerNo,__FILE__,__LINE__);
#endif
_multiScreenHeader *mscreenHeader = (_multiScreenHeader *) (screenFile + sizeof(_standardHeader));
return (_layerHeader *) ((uint8 *) mscreenHeader + mscreenHeader->layers + (layerNo * sizeof(_layerHeader)));
}
//---------------------------------------------------------------
// returns a pointer to the start of the shading mask, given the pointer to the start of the screen file
// assumes it has been passed a pointer to a valid screen file
uint8 *FetchShadingMask(uint8 *screenFile) // James 08apr97
{
_multiScreenHeader *mscreenHeader = (_multiScreenHeader *) (screenFile + sizeof(_standardHeader));
return (uint8 *) mscreenHeader + mscreenHeader->maskOffset;
}
//-----------------------------------------------------------------------------------------------------------------------
// returns a pointer to the anim header, given the pointer to the start of the anim file
// assumes it has been passed a pointer to a valid anim file
_animHeader *FetchAnimHeader(uint8 *animFile) // (25sep96JEL)
{
return (_animHeader *) (animFile + sizeof(_standardHeader));
}
//---------------------------------------------------------------
// returns a pointer to the requested frame number's cdtEntry, given the pointer to the start of the anim file
// drops out if the requested frame number exceeds the number of frames in this anim
// assumes it has been passed a pointer to a valid anim file
_cdtEntry *FetchCdtEntry(uint8 *animFile, uint16 frameNo) // Chris 09Oct96
{
_animHeader *animHead;
animHead = FetchAnimHeader(animFile);
#ifdef _SWORD2_DEBUG
if (frameNo > (animHead->noAnimFrames-1)) // frame number too large!
Con_fatal_error("FetchCdtEntry(animFile,%d) - anim only %d frames (%s line %u)",frameNo,animHead->noAnimFrames,__FILE__,__LINE__);
#endif
return (_cdtEntry *) ( (uint8 *)animHead + sizeof(_animHeader) + frameNo * sizeof(_cdtEntry) );
}
//---------------------------------------------------------------
// returns a pointer to the requested frame number's header, given the pointer to the start of the anim file
// drops out if the requested frame number exceeds the number of frames in this anim
// assumes it has been passed a pointer to a valid anim file
_frameHeader *FetchFrameHeader(uint8 *animFile, uint16 frameNo) // James 31oct96
{
// required address = (address of the start of the anim header) + frameOffset
return (_frameHeader *) (animFile + sizeof(_standardHeader) + (FetchCdtEntry(animFile,frameNo)->frameOffset) );
}
//---------------------------------------------------------------
// Returns a pointer to the requested parallax layer data.
// Assumes it has been passed a pointer to a valid screen file.
_parallax *FetchBackgroundParallaxLayer(uint8 *screenFile, int layer) // Chris 04Oct96
{
_multiScreenHeader *mscreenHeader = (_multiScreenHeader *) (screenFile + sizeof(_standardHeader));
#ifdef _SWORD2_DEBUG
if (mscreenHeader->bg_parallax[layer] == 0)
Con_fatal_error("FetchBackgroundParallaxLayer(%d) - No parallax layer exists (%s line %u)",layer,__FILE__,__LINE__);
#endif
return (_parallax *) ((uint8 *) mscreenHeader + mscreenHeader->bg_parallax[layer]);
}
//---------------------------------------------------------------
_parallax *FetchBackgroundLayer(uint8 *screenFile) // Chris 04Oct96
{
_multiScreenHeader *mscreenHeader = (_multiScreenHeader *) (screenFile + sizeof(_standardHeader));
#ifdef _SWORD2_DEBUG
if (mscreenHeader->screen == 0)
Con_fatal_error("FetchBackgroundLayer (%d) - No background layer exists (%s line %u)",__FILE__,__LINE__);
#endif
return (_parallax *) ((uint8 *) mscreenHeader + mscreenHeader->screen + sizeof(_screenHeader));
}
//---------------------------------------------------------------
_parallax *FetchForegroundParallaxLayer(uint8 *screenFile, int layer) // Chris 04Oct96
{
_multiScreenHeader *mscreenHeader = (_multiScreenHeader *) (screenFile + sizeof(_standardHeader));
#ifdef _SWORD2_DEBUG
if (mscreenHeader->fg_parallax[layer] == 0)
Con_fatal_error("FetchForegroundParallaxLayer(%d) - No parallax layer exists (%s line %u)",layer,__FILE__,__LINE__);
#endif
return (_parallax *) ((uint8 *) mscreenHeader + mscreenHeader->fg_parallax[layer]);
}
//---------------------------------------------------------------
uint8 errorLine[128];
//---------------------------------------------------------------
uint8 *FetchTextLine(uint8 *file, uint32 text_line) //Tony24Oct96
{
// Get the table
_standardHeader *fileHeader;
uint32 *point;
_textHeader *text_header = (_textHeader *) (file + sizeof(_standardHeader));
if (text_line>=text_header->noOfLines) // (James08aug97)
{
fileHeader = (_standardHeader*)file;
sprintf ((char*)errorLine, "xxMissing line %d of %s (only 0..%d)", text_line, fileHeader->name, text_header->noOfLines-1);
errorLine[0]=0; // first 2 chars are NULL so that actor-number comes out as '0'
errorLine[1]=0;
return(errorLine);
// GOT RID OF CON_FATAL_ERROR HERE BECAUSE WE DON'T WANT IT TO CRASH OUT ANY MORE!
// Con_fatal_error("FetchTextLine cannot get %d, only 0..%d avail (%s line %u)", text_line, text_header->noOfLines-1,__FILE__,__LINE__);
}
point=(uint32*) text_header+1; //point to the lookup table
return( (uint8*) (file+ *(point+text_line)) );
}
//---------------------------------------------------------------
// Used for testing text & speech (see FN_I_speak in speech.cpp)
uint8 CheckTextLine(uint8 *file, uint32 text_line) // (James26jun97)
{
_textHeader *text_header = (_textHeader *) (file + sizeof(_standardHeader));
if (text_line>=text_header->noOfLines)
return(0); // out of range => invalid
else
return(1); // valid
}
//---------------------------------------------------------------
uint8 *FetchObjectName(int32 resourceId) // James15jan97
{
_standardHeader *header;
header = (_standardHeader*) res_man.Res_open(resourceId);
res_man.Res_close(resourceId);
return (header->name); // note this pointer is no longer valid, but it should be ok until another resource is opened!
}
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