OpenTTD Source  20241121-master-g67a0fccfad
autoreplace_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 "../autoreplace_base.h"
16 
17 #include "../safeguards.h"
18 
19 static const SaveLoad _engine_renew_desc[] = {
20  SLE_VAR(EngineRenew, from, SLE_UINT16),
21  SLE_VAR(EngineRenew, to, SLE_UINT16),
22 
24  SLE_CONDVAR(EngineRenew, group_id, SLE_UINT16, SLV_60, SL_MAX_VERSION),
25  SLE_CONDVAR(EngineRenew, replace_when_old, SLE_BOOL, SLV_175, SL_MAX_VERSION),
26 };
27 
29  ERNWChunkHandler() : ChunkHandler('ERNW', CH_TABLE) {}
30 
31  void Save() const override
32  {
33  SlTableHeader(_engine_renew_desc);
34 
35  for (EngineRenew *er : EngineRenew::Iterate()) {
36  SlSetArrayIndex(er->index);
37  SlObject(er, _engine_renew_desc);
38  }
39  }
40 
41  void Load() const override
42  {
43  const std::vector<SaveLoad> slt = SlCompatTableHeader(_engine_renew_desc, _engine_renew_sl_compat);
44 
45  int index;
46 
47  while ((index = SlIterateArray()) != -1) {
48  EngineRenew *er = new (index) EngineRenew();
49  SlObject(er, slt);
50 
51  /* Advanced vehicle lists, ungrouped vehicles got added */
53  er->group_id = ALL_GROUP;
54  } else if (IsSavegameVersionBefore(SLV_71)) {
55  if (er->group_id == DEFAULT_GROUP) er->group_id = ALL_GROUP;
56  }
57  }
58  }
59 
60  void FixPointers() const override
61  {
62  for (EngineRenew *er : EngineRenew::Iterate()) {
63  SlObject(er, _engine_renew_desc);
64  }
65  }
66 };
67 
68 static const ERNWChunkHandler ERNW;
69 static const ChunkHandlerRef autoreplace_chunk_handlers[] = {
70  ERNW,
71 };
72 
73 extern const ChunkHandlerTable _autoreplace_chunk_handlers(autoreplace_chunk_handlers);
Loading for autoreplace chunks before table headers were added.
const SaveLoadCompat _engine_renew_sl_compat[]
Original field order for _engine_renew_desc.
static const GroupID DEFAULT_GROUP
Ungrouped vehicles are in this group.
Definition: group_type.h:17
static const GroupID ALL_GROUP
All vehicles are in this group.
Definition: group_type.h:16
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_REF(base, variable, type)
Storage of a reference in every version of a savegame.
Definition: saveload.h:1004
#define SLE_CONDVAR(base, variable, type, from, to)
Storage of a variable in some savegame versions.
Definition: saveload.h:863
bool IsSavegameVersionBefore(SaveLoadVersion major, uint8_t minor=0)
Checks whether the savegame is below major.
Definition: saveload.h:1239
@ SLV_175
175 24136
Definition: saveload.h:253
@ SLV_71
71 10567
Definition: saveload.h:128
@ SLV_60
60 9874
Definition: saveload.h:115
@ SL_MAX_VERSION
Highest possible saveload version.
Definition: saveload.h:397
@ REF_ENGINE_RENEWS
Load/save a reference to an engine renewal (autoreplace).
Definition: saveload.h:605
#define SLE_VAR(base, variable, type)
Storage of a variable in every version of a savegame.
Definition: saveload.h:987
Handlers and description of chunk.
Definition: saveload.h:461
void FixPointers() const override
Fix the pointers.
void Load() const override
Load the chunk.
void Save() const override
Save the chunk.
Struct to store engine replacements.
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