mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-21 09:21:08 +00:00
81 lines
2.3 KiB
C++
81 lines
2.3 KiB
C++
/* ScummVM - Graphic Adventure Engine
|
|
*
|
|
* ScummVM is the legal property of its developers, whose names
|
|
* are too numerous to list here. Please refer to the COPYRIGHT
|
|
* file distributed with this source distribution.
|
|
*
|
|
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
*
|
|
* $URL$
|
|
* $Id$
|
|
*
|
|
* A (some would say very) small collection of utility functions.
|
|
*/
|
|
|
|
#include "common/endian.h"
|
|
#include "common/util.h"
|
|
|
|
#include "tinsel/dw.h"
|
|
#include "tinsel/film.h"
|
|
#include "tinsel/handle.h"
|
|
#include "tinsel/multiobj.h"
|
|
#include "tinsel/scn.h"
|
|
#include "tinsel/tinsel.h" // for _vm
|
|
|
|
namespace Tinsel {
|
|
|
|
/**
|
|
* Given a scene handle and a chunk id, gets the scene in RAM and
|
|
* locates the requested chunk.
|
|
* @param handle Scene handle
|
|
* @param chunk Chunk Id
|
|
*/
|
|
byte *FindChunk(SCNHANDLE handle, uint32 chunk) {
|
|
byte *bptr = LockMem(handle);
|
|
uint32 *lptr = (uint32 *)bptr;
|
|
uint32 add;
|
|
|
|
// V1 chunk types can be found by substracting 2 from the
|
|
// chunk type. Note that CHUNK_STRING and CHUNK_BITMAP are
|
|
// the same in V1 and V2
|
|
if (_vm->getVersion() == TINSEL_V1 &&
|
|
chunk != CHUNK_STRING && chunk != CHUNK_BITMAP)
|
|
chunk -= 0x2L;
|
|
|
|
while (1) {
|
|
if (READ_LE_UINT32(lptr) == chunk)
|
|
return (byte *)(lptr + 2);
|
|
|
|
++lptr;
|
|
add = READ_LE_UINT32(lptr);
|
|
if (!add)
|
|
return NULL;
|
|
|
|
lptr = (uint32 *)(bptr + add);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Get the actor id from a film (column 0)
|
|
*/
|
|
int extractActor(SCNHANDLE film) {
|
|
const FILM *pfilm = (const FILM *)LockMem(film);
|
|
const FREEL *preel = &pfilm->reels[0];
|
|
const MULTI_INIT *pmi = (const MULTI_INIT *)LockMem(FROM_LE_32(preel->mobj));
|
|
return (int)FROM_LE_32(pmi->mulID);
|
|
}
|
|
|
|
} // end of namespace Tinsel
|