mirror of
https://github.com/DrBeef/Raze.git
synced 2024-11-16 09:21:12 +00:00
373 lines
10 KiB
C
373 lines
10 KiB
C
//-------------------------------------------------------------------------
|
|
/*
|
|
Copyright (C) 1996, 2003 - 3D Realms Entertainment
|
|
|
|
This file is part of Duke Nukem 3D version 1.5 - Atomic Edition
|
|
|
|
Duke Nukem 3D 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.
|
|
|
|
Original Source: 1996 - Todd Replogle
|
|
Prepared for public release: 03/21/2003 - Charlie Wiederhold, 3D Realms
|
|
Modifications for JonoF's port by Jonathon Fowler (jonof@edgenetwk.com)
|
|
*/
|
|
//-------------------------------------------------------------------------
|
|
|
|
#include "compat.h"
|
|
#include "types.h"
|
|
#include "develop.h"
|
|
#include "util_lib.h"
|
|
#include "animlib.h"
|
|
|
|
//****************************************************************************
|
|
//
|
|
// GLOBALS
|
|
//
|
|
//****************************************************************************
|
|
|
|
//****************************************************************************
|
|
//
|
|
// LOCALS
|
|
//
|
|
//****************************************************************************
|
|
static anim_t * anim=NULL;
|
|
static boolean Anim_Started = false;
|
|
|
|
//****************************************************************************
|
|
//
|
|
// CheckAnimStarted ()
|
|
//
|
|
//****************************************************************************
|
|
|
|
static void CheckAnimStarted(char * funcname)
|
|
{
|
|
if (!Anim_Started)
|
|
Error("ANIMLIB_%s: Anim has not been initialized\n",funcname);
|
|
}
|
|
//****************************************************************************
|
|
//
|
|
// findpage ()
|
|
// - given a frame number return the large page number it resides in
|
|
//
|
|
//****************************************************************************
|
|
|
|
uint16 findpage(uint16 framenumber)
|
|
{
|
|
uint16 i;
|
|
|
|
CheckAnimStarted("findpage");
|
|
for (i=0; i<anim->lpheader.nLps; i++)
|
|
{
|
|
if
|
|
(
|
|
anim->LpArray[i].baseRecord <= framenumber &&
|
|
anim->LpArray[i].baseRecord + anim->LpArray[i].nRecords > framenumber
|
|
)
|
|
return(i);
|
|
}
|
|
return(i);
|
|
}
|
|
|
|
|
|
//****************************************************************************
|
|
//
|
|
// loadpage ()
|
|
// - seek out and load in the large page specified
|
|
//
|
|
//****************************************************************************
|
|
|
|
void loadpage(uint16 pagenumber, uint16 *pagepointer)
|
|
{
|
|
int32 size;
|
|
byte * buffer;
|
|
|
|
CheckAnimStarted("loadpage");
|
|
buffer = anim->buffer;
|
|
if (anim->curlpnum != pagenumber)
|
|
{
|
|
anim->curlpnum = pagenumber;
|
|
buffer += 0xb00 + (pagenumber*0x10000);
|
|
size = sizeof(lp_descriptor);
|
|
/*
|
|
Bmemcpy(&anim->curlp,buffer,size);
|
|
|
|
// JBF: why didn't this get read from the LpArray[] table?
|
|
anim->curlp.baseRecord = B_LITTLE16(anim->curlp.baseRecord);
|
|
anim->curlp.nRecords = B_LITTLE16(anim->curlp.nRecords);
|
|
anim->curlp.nBytes = B_LITTLE16(anim->curlp.nBytes);
|
|
*/
|
|
Bmemcpy(&anim->curlp, &anim->LpArray[pagenumber], size);
|
|
|
|
buffer += size + sizeof(uint16);
|
|
Bmemcpy(pagepointer,buffer,anim->curlp.nBytes+(anim->curlp.nRecords*2));
|
|
}
|
|
}
|
|
|
|
|
|
//****************************************************************************
|
|
//
|
|
// CPlayRunSkipDump ()
|
|
// - This version of the decompressor is here for portability to non PC's
|
|
//
|
|
//****************************************************************************
|
|
|
|
void CPlayRunSkipDump(char *srcP, char *dstP)
|
|
{
|
|
signed char cnt;
|
|
uint16 wordCnt;
|
|
byte pixel;
|
|
|
|
|
|
nextOp:
|
|
cnt = (signed char) *srcP++;
|
|
if (cnt > 0)
|
|
goto dump;
|
|
if (cnt == 0)
|
|
goto run;
|
|
cnt -= 0x80;
|
|
if (cnt == 0)
|
|
goto longOp;
|
|
/* shortSkip */
|
|
dstP += cnt; /* adding 7-bit count to 32-bit pointer */
|
|
goto nextOp;
|
|
dump:
|
|
do
|
|
{
|
|
*dstP++ = *srcP++;
|
|
}
|
|
while (--cnt);
|
|
goto nextOp;
|
|
run:
|
|
wordCnt = (byte)*srcP++; /* 8-bit unsigned count */
|
|
pixel = *srcP++;
|
|
do
|
|
{
|
|
*dstP++ = pixel;
|
|
}
|
|
while (--wordCnt);
|
|
|
|
goto nextOp;
|
|
longOp:
|
|
wordCnt = B_LITTLE16(*((uint16 *)srcP));
|
|
srcP += sizeof(uint16);
|
|
if ((int16)wordCnt <= 0)
|
|
goto notLongSkip; /* Do SIGNED test. */
|
|
|
|
/* longSkip. */
|
|
dstP += wordCnt;
|
|
goto nextOp;
|
|
|
|
notLongSkip:
|
|
if (wordCnt == 0)
|
|
goto stop;
|
|
wordCnt -= 0x8000; /* Remove sign bit. */
|
|
if (wordCnt >= 0x4000)
|
|
goto longRun;
|
|
|
|
/* longDump. */
|
|
do
|
|
{
|
|
*dstP++ = *srcP++;
|
|
}
|
|
while (--wordCnt);
|
|
goto nextOp;
|
|
|
|
longRun:
|
|
wordCnt -= 0x4000; /* Clear "longRun" bit. */
|
|
pixel = *srcP++;
|
|
do
|
|
{
|
|
*dstP++ = pixel;
|
|
}
|
|
while (--wordCnt);
|
|
goto nextOp;
|
|
|
|
stop: /* all done */
|
|
;
|
|
}
|
|
|
|
|
|
|
|
//****************************************************************************
|
|
//
|
|
// renderframe ()
|
|
// - draw the frame sepcified from the large page in the buffer pointed to
|
|
//
|
|
//****************************************************************************
|
|
|
|
void renderframe(uint16 framenumber, uint16 *pagepointer)
|
|
{
|
|
uint16 offset=0;
|
|
uint16 i;
|
|
uint16 destframe;
|
|
byte *ppointer;
|
|
|
|
CheckAnimStarted("renderframe");
|
|
destframe = framenumber - anim->curlp.baseRecord;
|
|
|
|
for (i = 0; i < destframe; i++)
|
|
{
|
|
offset += B_LITTLE16(pagepointer[i]);
|
|
}
|
|
ppointer = (byte *)pagepointer;
|
|
|
|
ppointer+=anim->curlp.nRecords*2+offset;
|
|
if (ppointer[1])
|
|
{
|
|
ppointer += (4 + B_LITTLE16(((uint16 *)ppointer)[1]) + (B_LITTLE16(((uint16 *)ppointer)[1]) & 1));
|
|
}
|
|
else
|
|
{
|
|
ppointer+=4;
|
|
}
|
|
|
|
CPlayRunSkipDump((char *)ppointer, (char *)anim->imagebuffer);
|
|
}
|
|
|
|
|
|
//****************************************************************************
|
|
//
|
|
// drawframe ()
|
|
// - high level frame draw routine
|
|
//
|
|
//****************************************************************************
|
|
|
|
void drawframe(uint16 framenumber)
|
|
{
|
|
CheckAnimStarted("drawframe");
|
|
loadpage(findpage(framenumber), anim->thepage);
|
|
renderframe(framenumber, anim->thepage);
|
|
}
|
|
|
|
|
|
//****************************************************************************
|
|
//
|
|
// ANIM_LoadAnim ()
|
|
//
|
|
//****************************************************************************
|
|
|
|
void ANIM_LoadAnim(char * buffer)
|
|
{
|
|
uint16 i;
|
|
int32 size;
|
|
|
|
if (!Anim_Started)
|
|
{
|
|
anim = SafeMalloc(sizeof(anim_t));
|
|
Anim_Started = true;
|
|
}
|
|
|
|
anim->buffer = (unsigned char *)buffer;
|
|
anim->curlpnum = 0xffff;
|
|
anim->currentframe = -1;
|
|
size = sizeof(lpfileheader);
|
|
Bmemcpy(&anim->lpheader, buffer, size);
|
|
|
|
anim->lpheader.id = B_LITTLE32(anim->lpheader.id);
|
|
anim->lpheader.maxLps = B_LITTLE16(anim->lpheader.maxLps);
|
|
anim->lpheader.nLps = B_LITTLE16(anim->lpheader.nLps);
|
|
anim->lpheader.nRecords = B_LITTLE32(anim->lpheader.nRecords);
|
|
anim->lpheader.maxRecsPerLp = B_LITTLE16(anim->lpheader.maxRecsPerLp);
|
|
anim->lpheader.lpfTableOffset = B_LITTLE16(anim->lpheader.lpfTableOffset);
|
|
anim->lpheader.contentType = B_LITTLE32(anim->lpheader.contentType);
|
|
anim->lpheader.width = B_LITTLE16(anim->lpheader.width);
|
|
anim->lpheader.height = B_LITTLE16(anim->lpheader.height);
|
|
anim->lpheader.nFrames = B_LITTLE32(anim->lpheader.nFrames);
|
|
anim->lpheader.framesPerSecond = B_LITTLE16(anim->lpheader.framesPerSecond);
|
|
|
|
buffer += size+128;
|
|
// load the color palette
|
|
for (i = 0; i < 768; i += 3)
|
|
{
|
|
anim->pal[i+2] = *buffer++;
|
|
anim->pal[i+1] = *buffer++;
|
|
anim->pal[i] = *buffer++;
|
|
buffer++;
|
|
}
|
|
// read in large page descriptors
|
|
size = sizeof(anim->LpArray);
|
|
Bmemcpy(&anim->LpArray,buffer,size);
|
|
|
|
for (i = 0; i < size/sizeof(lp_descriptor); i++)
|
|
{
|
|
anim->LpArray[i].baseRecord = B_LITTLE16(anim->LpArray[i].baseRecord);
|
|
anim->LpArray[i].nRecords = B_LITTLE16(anim->LpArray[i].nRecords);
|
|
anim->LpArray[i].nBytes = B_LITTLE16(anim->LpArray[i].nBytes);
|
|
}
|
|
}
|
|
|
|
//****************************************************************************
|
|
//
|
|
// ANIM_FreeAnim ()
|
|
//
|
|
//****************************************************************************
|
|
|
|
void ANIM_FreeAnim(void)
|
|
{
|
|
if (Anim_Started)
|
|
{
|
|
SafeFree(anim);
|
|
Anim_Started = false;
|
|
}
|
|
}
|
|
|
|
//****************************************************************************
|
|
//
|
|
// ANIM_NumFrames ()
|
|
//
|
|
//****************************************************************************
|
|
|
|
int32 ANIM_NumFrames(void)
|
|
{
|
|
CheckAnimStarted("NumFrames");
|
|
return anim->lpheader.nRecords;
|
|
}
|
|
|
|
//****************************************************************************
|
|
//
|
|
// ANIM_DrawFrame ()
|
|
//
|
|
//****************************************************************************
|
|
|
|
byte * ANIM_DrawFrame(int32 framenumber)
|
|
{
|
|
int32 cnt;
|
|
|
|
CheckAnimStarted("DrawFrame");
|
|
if ((anim->currentframe != -1) && (anim->currentframe<=framenumber))
|
|
{
|
|
for (cnt = anim->currentframe; cnt < framenumber; cnt++)
|
|
drawframe(cnt);
|
|
}
|
|
else
|
|
{
|
|
for (cnt = 0; cnt < framenumber; cnt++)
|
|
drawframe(cnt);
|
|
}
|
|
anim->currentframe = framenumber;
|
|
return anim->imagebuffer;
|
|
}
|
|
|
|
//****************************************************************************
|
|
//
|
|
// ANIM_GetPalette ()
|
|
//
|
|
//****************************************************************************
|
|
|
|
byte * ANIM_GetPalette(void)
|
|
{
|
|
CheckAnimStarted("GetPalette");
|
|
return anim->pal;
|
|
}
|