OpenTTD Source  20241121-master-g67a0fccfad
storage_sl.cpp
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1 /*
2  * This file is part of OpenTTD.
3  * 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.
4  * 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.
5  * 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/>.
6  */
7 
10 #include "../stdafx.h"
11 
12 #include "saveload.h"
14 
15 #include "../newgrf_storage.h"
16 
17 #include "../safeguards.h"
18 
20 static const SaveLoad _storage_desc[] = {
21  SLE_CONDVAR(PersistentStorage, grfid, SLE_UINT32, SLV_6, SL_MAX_VERSION),
24 };
25 
28  PSACChunkHandler() : ChunkHandler('PSAC', CH_TABLE) {}
29 
30  void Load() const override
31  {
32  const std::vector<SaveLoad> slt = SlCompatTableHeader(_storage_desc, _storage_sl_compat);
33 
34  int index;
35 
36  while ((index = SlIterateArray()) != -1) {
38  PersistentStorage *ps = new (index) PersistentStorage(0, 0, 0);
39  SlObject(ps, slt);
40  }
41  }
42 
43  void Save() const override
44  {
46 
47  /* Write the industries */
49  ps->ClearChanges();
50  SlSetArrayIndex(ps->index);
52  }
53  }
54 };
55 
56 static const PSACChunkHandler PSAC;
57 static const ChunkHandlerRef persistent_storage_chunk_handlers[] = {
58  PSAC,
59 };
60 
61 extern const ChunkHandlerTable _persistent_storage_chunk_handlers(persistent_storage_chunk_handlers);
int SlIterateArray()
Iterate through the elements of an array and read the whole thing.
Definition: saveload.cpp:658
std::vector< SaveLoad > SlCompatTableHeader(const SaveLoadTable &slt, const SaveLoadCompatTable &slct)
Load a table header in a savegame compatible way.
Definition: saveload.cpp:1893
std::vector< SaveLoad > SlTableHeader(const SaveLoadTable &slt)
Save or Load a table header.
Definition: saveload.cpp:1755
void SlObject(void *object, const SaveLoadTable &slt)
Main SaveLoad function.
Definition: saveload.cpp:1702
Functions/types related to saving and loading games.
std::reference_wrapper< const ChunkHandler > ChunkHandlerRef
A reference to ChunkHandler.
Definition: saveload.h:507
std::span< const ChunkHandlerRef > ChunkHandlerTable
A table of ChunkHandler entries.
Definition: saveload.h:510
#define SLE_CONDARR(base, variable, type, length, from, to)
Storage of a fixed-size array of SL_VAR elements in some savegame versions.
Definition: saveload.h:895
#define SLE_CONDVAR(base, variable, type, from, to)
Storage of a variable in some savegame versions.
Definition: saveload.h:863
@ SLV_6
6.0 1721 6.1 1768
Definition: saveload.h:46
@ SL_MAX_VERSION
Highest possible saveload version.
Definition: saveload.h:397
@ SLV_EXTEND_PERSISTENT_STORAGE
201 PR#6885 Extend NewGRF persistent storages.
Definition: saveload.h:285
@ SLV_161
161 22567
Definition: saveload.h:236
static const SaveLoad _storage_desc[]
Description of the data to save and load in PersistentStorage.
Definition: storage_sl.cpp:20
Loading of storage chunks before table headers were added.
const SaveLoadCompat _storage_sl_compat[]
Original field order for _storage_desc.
Handlers and description of chunk.
Definition: saveload.h:461
Persistent storage data.
Definition: storage_sl.cpp:27
void Save() const override
Save the chunk.
Definition: storage_sl.cpp:43
void Load() const override
Load the chunk.
Definition: storage_sl.cpp:30
Class for pooled persistent storage of data.
static bool CanAllocateItem(size_t n=1)
Helper functions so we can use PoolItem::Function() instead of _poolitem_pool.Function()
Definition: pool_type.hpp:309
static Pool::IterateWrapper< Titem > Iterate(size_t from=0)
Returns an iterable ensemble of all valid Titem.
Definition: pool_type.hpp:388
SaveLoad type struct.
Definition: saveload.h:713