Files @ r15321:b66ded98380f
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Location: cpp/openttd-patchpack/source/src/saveload/map_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 map_sl.cpp Code handling saving and loading of map */

#include "../stdafx.h"
#include "../map_func.h"
#include "../core/alloc_type.hpp"
#include "../core/bitmath_func.hpp"

#include "saveload.h"

static uint32 _map_dim_x;
static uint32 _map_dim_y;

static const SaveLoadGlobVarList _map_dimensions[] = {
	SLEG_CONDVAR(_map_dim_x, SLE_UINT32, 6, SL_MAX_VERSION),
	SLEG_CONDVAR(_map_dim_y, SLE_UINT32, 6, SL_MAX_VERSION),
	    SLEG_END()
};

static void Save_MAPS()
{
	_map_dim_x = MapSizeX();
	_map_dim_y = MapSizeY();
	SlGlobList(_map_dimensions);
}

static void Load_MAPS()
{
	SlGlobList(_map_dimensions);
	AllocateMap(_map_dim_x, _map_dim_y);
}

static const uint MAP_SL_BUF_SIZE = 4096;

static void Load_MAPT()
{
	SmallStackSafeStackAlloc<byte, MAP_SL_BUF_SIZE> buf;
	TileIndex size = MapSize();

	for (TileIndex i = 0; i != size;) {
		SlArray(buf, MAP_SL_BUF_SIZE, SLE_UINT8);
		for (uint j = 0; j != MAP_SL_BUF_SIZE; j++) _m[i++].type_height = buf[j];
	}
}

static void Save_MAPT()
{
	SmallStackSafeStackAlloc<byte, MAP_SL_BUF_SIZE> buf;
	TileIndex size = MapSize();

	SlSetLength(size);
	for (TileIndex i = 0; i != size;) {
		for (uint j = 0; j != MAP_SL_BUF_SIZE; j++) buf[j] = _m[i++].type_height;
		SlArray(buf, MAP_SL_BUF_SIZE, SLE_UINT8);
	}
}

static void Load_MAP1()
{
	SmallStackSafeStackAlloc<byte, MAP_SL_BUF_SIZE> buf;
	TileIndex size = MapSize();

	for (TileIndex i = 0; i != size;) {
		SlArray(buf, MAP_SL_BUF_SIZE, SLE_UINT8);
		for (uint j = 0; j != MAP_SL_BUF_SIZE; j++) _m[i++].m1 = buf[j];
	}
}

static void Save_MAP1()
{
	SmallStackSafeStackAlloc<byte, MAP_SL_BUF_SIZE> buf;
	TileIndex size = MapSize();

	SlSetLength(size);
	for (TileIndex i = 0; i != size;) {
		for (uint j = 0; j != MAP_SL_BUF_SIZE; j++) buf[j] = _m[i++].m1;
		SlArray(buf, MAP_SL_BUF_SIZE, SLE_UINT8);
	}
}

static void Load_MAP2()
{
	SmallStackSafeStackAlloc<uint16, MAP_SL_BUF_SIZE> buf;
	TileIndex size = MapSize();

	for (TileIndex i = 0; i != size;) {
		SlArray(buf, MAP_SL_BUF_SIZE,
			/* In those versions the m2 was 8 bits */
			CheckSavegameVersion(5) ? SLE_FILE_U8 | SLE_VAR_U16 : SLE_UINT16
		);
		for (uint j = 0; j != MAP_SL_BUF_SIZE; j++) _m[i++].m2 = buf[j];
	}
}

static void Save_MAP2()
{
	SmallStackSafeStackAlloc<uint16, MAP_SL_BUF_SIZE> buf;
	TileIndex size = MapSize();

	SlSetLength(size * sizeof(uint16));
	for (TileIndex i = 0; i != size;) {
		for (uint j = 0; j != MAP_SL_BUF_SIZE; j++) buf[j] = _m[i++].m2;
		SlArray(buf, MAP_SL_BUF_SIZE, SLE_UINT16);
	}
}

static void Load_MAP3()
{
	SmallStackSafeStackAlloc<byte, MAP_SL_BUF_SIZE> buf;
	TileIndex size = MapSize();

	for (TileIndex i = 0; i != size;) {
		SlArray(buf, MAP_SL_BUF_SIZE, SLE_UINT8);
		for (uint j = 0; j != MAP_SL_BUF_SIZE; j++) _m[i++].m3 = buf[j];
	}
}

static void Save_MAP3()
{
	SmallStackSafeStackAlloc<byte, MAP_SL_BUF_SIZE> buf;
	TileIndex size = MapSize();

	SlSetLength(size);
	for (TileIndex i = 0; i != size;) {
		for (uint j = 0; j != MAP_SL_BUF_SIZE; j++) buf[j] = _m[i++].m3;
		SlArray(buf, MAP_SL_BUF_SIZE, SLE_UINT8);
	}
}

static void Load_MAP4()
{
	SmallStackSafeStackAlloc<byte, MAP_SL_BUF_SIZE> buf;
	TileIndex size = MapSize();

	for (TileIndex i = 0; i != size;) {
		SlArray(buf, MAP_SL_BUF_SIZE, SLE_UINT8);
		for (uint j = 0; j != MAP_SL_BUF_SIZE; j++) _m[i++].m4 = buf[j];
	}
}

static void Save_MAP4()
{
	SmallStackSafeStackAlloc<byte, MAP_SL_BUF_SIZE> buf;
	TileIndex size = MapSize();

	SlSetLength(size);
	for (TileIndex i = 0; i != size;) {
		for (uint j = 0; j != MAP_SL_BUF_SIZE; j++) buf[j] = _m[i++].m4;
		SlArray(buf, MAP_SL_BUF_SIZE, SLE_UINT8);
	}
}

static void Load_MAP5()
{
	SmallStackSafeStackAlloc<byte, MAP_SL_BUF_SIZE> buf;
	TileIndex size = MapSize();

	for (TileIndex i = 0; i != size;) {
		SlArray(buf, MAP_SL_BUF_SIZE, SLE_UINT8);
		for (uint j = 0; j != MAP_SL_BUF_SIZE; j++) _m[i++].m5 = buf[j];
	}
}

static void Save_MAP5()
{
	SmallStackSafeStackAlloc<byte, MAP_SL_BUF_SIZE> buf;
	TileIndex size = MapSize();

	SlSetLength(size);
	for (TileIndex i = 0; i != size;) {
		for (uint j = 0; j != MAP_SL_BUF_SIZE; j++) buf[j] = _m[i++].m5;
		SlArray(buf, MAP_SL_BUF_SIZE, SLE_UINT8);
	}
}

static void Load_MAP6()
{
	SmallStackSafeStackAlloc<byte, MAP_SL_BUF_SIZE> buf;
	TileIndex size = MapSize();

	if (CheckSavegameVersion(42)) {
		for (TileIndex i = 0; i != size;) {
			/* 1024, otherwise we overflow on 64x64 maps! */
			SlArray(buf, 1024, SLE_UINT8);
			for (uint j = 0; j != 1024; j++) {
				_m[i++].m6 = GB(buf[j], 0, 2);
				_m[i++].m6 = GB(buf[j], 2, 2);
				_m[i++].m6 = GB(buf[j], 4, 2);
				_m[i++].m6 = GB(buf[j], 6, 2);
			}
		}
	} else {
		for (TileIndex i = 0; i != size;) {
			SlArray(buf, MAP_SL_BUF_SIZE, SLE_UINT8);
			for (uint j = 0; j != MAP_SL_BUF_SIZE; j++) _m[i++].m6 = buf[j];
		}
	}
}

static void Save_MAP6()
{
	SmallStackSafeStackAlloc<byte, MAP_SL_BUF_SIZE> buf;
	TileIndex size = MapSize();

	SlSetLength(size);
	for (TileIndex i = 0; i != size;) {
		for (uint j = 0; j != MAP_SL_BUF_SIZE; j++) buf[j] = _m[i++].m6;
		SlArray(buf, MAP_SL_BUF_SIZE, SLE_UINT8);
	}
}

static void Load_MAP7()
{
	SmallStackSafeStackAlloc<byte, MAP_SL_BUF_SIZE> buf;
	TileIndex size = MapSize();

	for (TileIndex i = 0; i != size;) {
		SlArray(buf, MAP_SL_BUF_SIZE, SLE_UINT8);
		for (uint j = 0; j != MAP_SL_BUF_SIZE; j++) _me[i++].m7 = buf[j];
	}
}

static void Save_MAP7()
{
	SmallStackSafeStackAlloc<byte, MAP_SL_BUF_SIZE> buf;
	TileIndex size = MapSize();

	SlSetLength(size);
	for (TileIndex i = 0; i != size;) {
		for (uint j = 0; j != MAP_SL_BUF_SIZE; j++) buf[j] = _me[i++].m7;
		SlArray(buf, MAP_SL_BUF_SIZE, SLE_UINT8);
	}
}

extern const ChunkHandler _map_chunk_handlers[] = {
	{ 'MAPS', Save_MAPS, Load_MAPS, NULL, CH_RIFF },
	{ 'MAPT', Save_MAPT, Load_MAPT, NULL, CH_RIFF },
	{ 'MAPO', Save_MAP1, Load_MAP1, NULL, CH_RIFF },
	{ 'MAP2', Save_MAP2, Load_MAP2, NULL, CH_RIFF },
	{ 'M3LO', Save_MAP3, Load_MAP3, NULL, CH_RIFF },
	{ 'M3HI', Save_MAP4, Load_MAP4, NULL, CH_RIFF },
	{ 'MAP5', Save_MAP5, Load_MAP5, NULL, CH_RIFF },
	{ 'MAPE', Save_MAP6, Load_MAP6, NULL, CH_RIFF },
	{ 'MAP7', Save_MAP7, Load_MAP7, NULL, CH_RIFF | CH_LAST },
};