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animated_tile_sl.cpp
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1 /* $Id: animated_tile_sl.cpp 26482 2014-04-23 20:13:33Z rubidium $ */
2
3 /*
4 * This file is part of OpenTTD.
5 * OpenTTD 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, version 2.
6 * OpenTTD 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.
7 * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
8 */
9
12 #include "../stdafx.h"
13 #include "../tile_type.h"
14 #include "../core/alloc_func.hpp"
15
16 #include "saveload.h"
17
18 #include "../safeguards.h"
19
20 extern TileIndex *_animated_tile_list;
21 extern uint _animated_tile_count;
22 extern uint _animated_tile_allocated;
23
27 static void Save_ANIT()
28 {
29 SlSetLength(_animated_tile_count * sizeof(*_animated_tile_list));
30 SlArray(_animated_tile_list, _animated_tile_count, SLE_UINT32);
31 }
32
36 static void Load_ANIT()
37 {
38 /* Before version 80 we did NOT have a variable length animated tile table */
39 if (IsSavegameVersionBefore(80)) {
40 /* In pre version 6, we has 16bit per tile, now we have 32bit per tile, convert it ;) */
41 SlArray(_animated_tile_list, 256, IsSavegameVersionBefore(6) ? (SLE_FILE_U16 | SLE_VAR_U32) : SLE_UINT32);
42
43 for (_animated_tile_count = 0; _animated_tile_count < 256; _animated_tile_count++) {
44 if (_animated_tile_list[_animated_tile_count] == 0) break;
45 }
46 return;
47 }
48
49 _animated_tile_count = (uint)SlGetFieldLength() / sizeof(*_animated_tile_list);
50
51 /* Determine a nice rounded size for the amount of allocated tiles */
52 _animated_tile_allocated = 256;
53 while (_animated_tile_allocated < _animated_tile_count) _animated_tile_allocated *= 2;
54
55 _animated_tile_list = ReallocT<TileIndex>(_animated_tile_list, _animated_tile_allocated);
56 SlArray(_animated_tile_list, _animated_tile_count, SLE_UINT32);
57 }
58
63 extern const ChunkHandler _animated_tile_chunk_handlers[] = {
64 { 'ANIT', Save_ANIT, Load_ANIT, NULL, NULL, CH_RIFF | CH_LAST},
65 };