Files @ r15321:b66ded98380f
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Location: cpp/openttd-patchpack/source/src/saveload/animated_tile_sl.cpp

frosch
(svn r19972) -Change: Use the md5sum from the previous save of the game for BaNaNaS instead of the initial (when the grf was added) md5sum from the gamelog. Neither method is 'better', but this way it is independent from the gamelog.
/* $Id$ */

/*
 * This file is part of OpenTTD.
 * 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.
 * 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.
 * 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/>.
 */

/** @file animated_tile_sl.cpp Code handling saving and loading of animated tiles */

#include "../stdafx.h"
#include "../tile_type.h"
#include "../core/alloc_func.hpp"

#include "saveload.h"

extern TileIndex *_animated_tile_list;
extern uint _animated_tile_count;
extern uint _animated_tile_allocated;

/**
 * Save the ANIT chunk.
 */
static void Save_ANIT()
{
	SlSetLength(_animated_tile_count * sizeof(*_animated_tile_list));
	SlArray(_animated_tile_list, _animated_tile_count, SLE_UINT32);
}

/**
 * Load the ANIT chunk; the chunk containing the animated tiles.
 */
static void Load_ANIT()
{
	/* Before version 80 we did NOT have a variable length animated tile table */
	if (CheckSavegameVersion(80)) {
		/* In pre version 6, we has 16bit per tile, now we have 32bit per tile, convert it ;) */
		SlArray(_animated_tile_list, 256, CheckSavegameVersion(6) ? (SLE_FILE_U16 | SLE_VAR_U32) : SLE_UINT32);

		for (_animated_tile_count = 0; _animated_tile_count < 256; _animated_tile_count++) {
			if (_animated_tile_list[_animated_tile_count] == 0) break;
		}
		return;
	}

	_animated_tile_count = (uint)SlGetFieldLength() / sizeof(*_animated_tile_list);

	/* Determine a nice rounded size for the amount of allocated tiles */
	_animated_tile_allocated = 256;
	while (_animated_tile_allocated < _animated_tile_count) _animated_tile_allocated *= 2;

	_animated_tile_list = ReallocT<TileIndex>(_animated_tile_list, _animated_tile_allocated);
	SlArray(_animated_tile_list, _animated_tile_count, SLE_UINT32);
}

/**
 * "Definition" imported by the saveload code to be able to load and save
 * the animated tile table.
 */
extern const ChunkHandler _animated_tile_chunk_handlers[] = {
	{ 'ANIT', Save_ANIT, Load_ANIT, NULL, CH_RIFF | CH_LAST},
};