animated_tile_sl.cpp

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00001 /* $Id: animated_tile_sl.cpp 17248 2009-08-21 20:21:05Z rubidium $ */
00002 
00003 /*
00004  * This file is part of OpenTTD.
00005  * 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.
00006  * 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.
00007  * 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/>.
00008  */
00009 
00012 #include "../stdafx.h"
00013 #include "../tile_type.h"
00014 #include "../core/alloc_func.hpp"
00015 
00016 #include "saveload.h"
00017 
00018 extern TileIndex *_animated_tile_list;
00019 extern uint _animated_tile_count;
00020 extern uint _animated_tile_allocated;
00021 
00025 static void Save_ANIT()
00026 {
00027   SlSetLength(_animated_tile_count * sizeof(*_animated_tile_list));
00028   SlArray(_animated_tile_list, _animated_tile_count, SLE_UINT32);
00029 }
00030 
00034 static void Load_ANIT()
00035 {
00036   /* Before version 80 we did NOT have a variable length animated tile table */
00037   if (CheckSavegameVersion(80)) {
00038     /* In pre version 6, we has 16bit per tile, now we have 32bit per tile, convert it ;) */
00039     SlArray(_animated_tile_list, 256, CheckSavegameVersion(6) ? (SLE_FILE_U16 | SLE_VAR_U32) : SLE_UINT32);
00040 
00041     for (_animated_tile_count = 0; _animated_tile_count < 256; _animated_tile_count++) {
00042       if (_animated_tile_list[_animated_tile_count] == 0) break;
00043     }
00044     return;
00045   }
00046 
00047   _animated_tile_count = (uint)SlGetFieldLength() / sizeof(*_animated_tile_list);
00048 
00049   /* Determine a nice rounded size for the amount of allocated tiles */
00050   _animated_tile_allocated = 256;
00051   while (_animated_tile_allocated < _animated_tile_count) _animated_tile_allocated *= 2;
00052 
00053   _animated_tile_list = ReallocT<TileIndex>(_animated_tile_list, _animated_tile_allocated);
00054   SlArray(_animated_tile_list, _animated_tile_count, SLE_UINT32);
00055 }
00056 
00061 extern const ChunkHandler _animated_tile_chunk_handlers[] = {
00062   { 'ANIT', Save_ANIT, Load_ANIT, NULL, CH_RIFF | CH_LAST},
00063 };

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