blob: b14b1c59621af941cd7b088ccc41af2fc6844ef2 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
|
/* 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
|
