mirror of
https://github.com/JGRennison/OpenTTD-patches.git
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80 lines
2.4 KiB
C++
80 lines
2.4 KiB
C++
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/*
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* This file is part of OpenTTD.
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* 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.
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* 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.
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* 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/>.
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*/
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/** @file animated_tile_sl.cpp Code handling saving and loading of animated tiles */
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#include "../stdafx.h"
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#include "../animated_tile.h"
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#include "../tile_type.h"
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#include "../core/alloc_func.hpp"
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#include "saveload.h"
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#include "../safeguards.h"
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/**
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* Save the ANIT chunk.
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*/
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static void Save_ANIT()
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{
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uint count = 0;
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for (const auto &it : _animated_tiles) {
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if (!it.second.pending_deletion) count++;
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}
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SlSetLength(count * 5);
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for (const auto &it : _animated_tiles) {
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if (it.second.pending_deletion) continue;
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SlWriteUint32(it.first);
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SlWriteByte(it.second.speed);
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}
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}
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/**
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* Load the ANIT chunk; the chunk containing the animated tiles.
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*/
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static void Load_ANIT()
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{
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/* Before version 80 we did NOT have a variable length animated tile table */
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if (IsSavegameVersionBefore(SLV_80)) {
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/* In pre version 6, we has 16bit per tile, now we have 32bit per tile, convert it ;) */
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TileIndex anim_list[256];
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SlArray(anim_list, 256, IsSavegameVersionBefore(SLV_6) ? (SLE_FILE_U16 | SLE_VAR_U32) : SLE_UINT32);
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for (int i = 0; i < 256; i++) {
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if (anim_list[i] == 0) break;
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_animated_tiles[anim_list[i]] = {};
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}
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return;
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}
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_animated_tiles.clear();
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if (SlXvIsFeaturePresent(XSLFI_ANIMATED_TILE_EXTRA)) {
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uint count = (uint)SlGetFieldLength() / 5;
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for (uint i = 0; i < count; i++) {
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TileIndex tile = SlReadUint32();
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AnimatedTileInfo info = {};
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info.speed = SlReadByte();
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_animated_tiles[tile] = info;
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}
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} else {
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uint count = (uint)SlGetFieldLength() / 4;
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for (uint i = 0; i < count; i++) {
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_animated_tiles[SlReadUint32()] = {};
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}
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}
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}
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/**
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* "Definition" imported by the saveload code to be able to load and save
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* the animated tile table.
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*/
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static const ChunkHandler animated_tile_chunk_handlers[] = {
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{ 'ANIT', Save_ANIT, Load_ANIT, nullptr, nullptr, CH_RIFF },
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};
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extern const ChunkHandlerTable _animated_tile_chunk_handlers(animated_tile_chunk_handlers);
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