OpenTTD Source  1.11.2
engine_sl.cpp
Go to the documentation of this file.
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 #include "saveload_internal.h"
12 #include "../engine_base.h"
13 #include "../string_func.h"
14 #include <vector>
15 
16 #include "../safeguards.h"
17 
18 static const SaveLoad _engine_desc[] = {
19  SLE_CONDVAR(Engine, intro_date, SLE_FILE_U16 | SLE_VAR_I32, SL_MIN_VERSION, SLV_31),
20  SLE_CONDVAR(Engine, intro_date, SLE_INT32, SLV_31, SL_MAX_VERSION),
21  SLE_CONDVAR(Engine, age, SLE_FILE_U16 | SLE_VAR_I32, SL_MIN_VERSION, SLV_31),
22  SLE_CONDVAR(Engine, age, SLE_INT32, SLV_31, SL_MAX_VERSION),
23  SLE_VAR(Engine, reliability, SLE_UINT16),
24  SLE_VAR(Engine, reliability_spd_dec, SLE_UINT16),
25  SLE_VAR(Engine, reliability_start, SLE_UINT16),
26  SLE_VAR(Engine, reliability_max, SLE_UINT16),
27  SLE_VAR(Engine, reliability_final, SLE_UINT16),
28  SLE_VAR(Engine, duration_phase_1, SLE_UINT16),
29  SLE_VAR(Engine, duration_phase_2, SLE_UINT16),
30  SLE_VAR(Engine, duration_phase_3, SLE_UINT16),
31 
33  SLE_VAR(Engine, flags, SLE_UINT8),
34  SLE_CONDNULL(1, SL_MIN_VERSION, SLV_179), // old preview_company_rank
35  SLE_CONDVAR(Engine, preview_asked, SLE_UINT16, SLV_179, SL_MAX_VERSION),
36  SLE_CONDVAR(Engine, preview_company, SLE_UINT8, SLV_179, SL_MAX_VERSION),
37  SLE_VAR(Engine, preview_wait, SLE_UINT8),
39  SLE_CONDVAR(Engine, company_avail, SLE_FILE_U8 | SLE_VAR_U16, SL_MIN_VERSION, SLV_104),
40  SLE_CONDVAR(Engine, company_avail, SLE_UINT16, SLV_104, SL_MAX_VERSION),
41  SLE_CONDVAR(Engine, company_hidden, SLE_UINT16, SLV_193, SL_MAX_VERSION),
43 
44  SLE_CONDNULL(16, SLV_2, SLV_144), // old reserved space
45 
46  SLE_END()
47 };
48 
49 static std::vector<Engine*> _temp_engine;
50 
57 {
58  uint8 *zero = CallocT<uint8>(sizeof(Engine));
59  Engine *engine = new (zero) Engine();
60  return engine;
61 }
62 
67 static void FreeEngine(Engine *e)
68 {
69  if (e != nullptr) {
70  e->~Engine();
71  free(e);
72  }
73 }
74 
75 Engine *GetTempDataEngine(EngineID index)
76 {
77  if (index < _temp_engine.size()) {
78  return _temp_engine[index];
79  } else if (index == _temp_engine.size()) {
80  _temp_engine.push_back(CallocEngine());
81  return _temp_engine[index];
82  } else {
83  NOT_REACHED();
84  }
85 }
86 
87 static void Save_ENGN()
88 {
89  for (Engine *e : Engine::Iterate()) {
90  SlSetArrayIndex(e->index);
91  SlObject(e, _engine_desc);
92  }
93 }
94 
95 static void Load_ENGN()
96 {
97  /* As engine data is loaded before engines are initialized we need to load
98  * this information into a temporary array. This is then copied into the
99  * engine pool after processing NewGRFs by CopyTempEngineData(). */
100  int index;
101  while ((index = SlIterateArray()) != -1) {
102  Engine *e = GetTempDataEngine(index);
103  SlObject(e, _engine_desc);
104 
106  /* preview_company_rank was replaced with preview_company and preview_asked.
107  * Just cancel any previews. */
108  e->flags &= ~4; // ENGINE_OFFER_WINDOW_OPEN
110  e->preview_asked = (CompanyMask)-1;
111  }
112  }
113 }
114 
119 {
120  for (Engine *e : Engine::Iterate()) {
121  if (e->index >= _temp_engine.size()) break;
122 
123  const Engine *se = GetTempDataEngine(e->index);
124  e->intro_date = se->intro_date;
125  e->age = se->age;
126  e->reliability = se->reliability;
134  e->flags = se->flags;
135  e->preview_asked = se->preview_asked;
137  e->preview_wait = se->preview_wait;
138  e->company_avail = se->company_avail;
140  e->name = se->name;
141  }
142 
143  ResetTempEngineData();
144 }
145 
146 void ResetTempEngineData()
147 {
148  /* Get rid of temporary data */
149  for (std::vector<Engine*>::iterator it = _temp_engine.begin(); it != _temp_engine.end(); ++it) {
150  FreeEngine(*it);
151  }
152  _temp_engine.clear();
153 }
154 
155 static void Load_ENGS()
156 {
157  /* Load old separate String ID list into a temporary array. This
158  * was always 256 entries. */
159  StringID names[256];
160 
161  SlArray(names, lengthof(names), SLE_STRINGID);
162 
163  /* Copy each string into the temporary engine array. */
164  for (EngineID engine = 0; engine < lengthof(names); engine++) {
165  Engine *e = GetTempDataEngine(engine);
166  e->name = CopyFromOldName(names[engine]);
167  }
168 }
169 
172  SLE_VAR(EngineIDMapping, grfid, SLE_UINT32),
173  SLE_VAR(EngineIDMapping, internal_id, SLE_UINT16),
174  SLE_VAR(EngineIDMapping, type, SLE_UINT8),
175  SLE_VAR(EngineIDMapping, substitute_id, SLE_UINT8),
176  SLE_END()
177 };
178 
179 static void Save_EIDS()
180 {
181  uint index = 0;
182  for (EngineIDMapping &eid : _engine_mngr) {
183  SlSetArrayIndex(index);
185  index++;
186  }
187 }
188 
189 static void Load_EIDS()
190 {
191  _engine_mngr.clear();
192 
193  while (SlIterateArray() != -1) {
194  EngineIDMapping *eid = &_engine_mngr.emplace_back();
196  }
197 }
198 
199 extern const ChunkHandler _engine_chunk_handlers[] = {
200  { 'EIDS', Save_EIDS, Load_EIDS, nullptr, nullptr, CH_ARRAY },
201  { 'ENGN', Save_ENGN, Load_ENGN, nullptr, nullptr, CH_ARRAY },
202  { 'ENGS', nullptr, Load_ENGS, nullptr, nullptr, CH_RIFF | CH_LAST },
203 };
SLV_144
@ SLV_144
144 20334
Definition: saveload.h:215
Engine::reliability_max
uint16 reliability_max
Maximal reliability of the engine.
Definition: engine_base.h:28
Engine::duration_phase_3
uint16 duration_phase_3
Third reliability phase in months, decaying to reliability_final.
Definition: engine_base.h:32
SL_MIN_VERSION
@ SL_MIN_VERSION
First savegame version.
Definition: saveload.h:31
Engine::reliability_spd_dec
uint16 reliability_spd_dec
Speed of reliability decay between services (per day).
Definition: engine_base.h:26
SLE_CONDSSTR
#define SLE_CONDSSTR(base, variable, type, from, to)
Storage of a std::string in some savegame versions.
Definition: saveload.h:594
Engine::company_avail
CompanyMask company_avail
Bit for each company whether the engine is available for that company.
Definition: engine_base.h:37
Pool::PoolItem::index
Tindex index
Index of this pool item.
Definition: pool_type.hpp:227
SLE_CONDVAR
#define SLE_CONDVAR(base, variable, type, from, to)
Storage of a variable in some savegame versions.
Definition: saveload.h:552
SLV_84
@ SLV_84
84 11822
Definition: saveload.h:143
Engine::duration_phase_1
uint16 duration_phase_1
First reliability phase in months, increasing reliability from reliability_start to reliability_max.
Definition: engine_base.h:30
SLE_STR
#define SLE_STR(base, variable, type, length)
Storage of a string in every savegame version.
Definition: saveload.h:648
Engine::reliability_start
uint16 reliability_start
Initial reliability of the engine.
Definition: engine_base.h:27
CH_LAST
@ CH_LAST
Last chunk in this array.
Definition: saveload.h:411
SLV_104
@ SLV_104
104 14735
Definition: saveload.h:167
Engine::preview_company
CompanyID preview_company
Company which is currently being offered a preview INVALID_COMPANY means no company.
Definition: engine_base.h:35
Engine
Definition: engine_base.h:21
ChunkHandler
Handlers and description of chunk.
Definition: saveload.h:380
Engine::company_hidden
CompanyMask company_hidden
Bit for each company whether the engine is normally hidden in the build gui for that company.
Definition: engine_base.h:38
SLV_179
@ SLV_179
179 24810
Definition: saveload.h:257
SLE_CONDNULL
#define SLE_CONDNULL(length, from, to)
Empty space in some savegame versions.
Definition: saveload.h:678
EngineID
uint16 EngineID
Unique identification number of an engine.
Definition: engine_type.h:21
CallocEngine
static Engine * CallocEngine()
Allocate an Engine structure, but not using the pools.
Definition: engine_sl.cpp:56
SLV_31
@ SLV_31
31 5999
Definition: saveload.h:80
SLE_END
#define SLE_END()
End marker of a struct/class save or load.
Definition: saveload.h:687
CopyFromOldName
std::string CopyFromOldName(StringID id)
Copy and convert old custom names to UTF-8.
Definition: strings_sl.cpp:60
Engine::preview_asked
CompanyMask preview_asked
Bit for each company which has already been offered a preview.
Definition: engine_base.h:34
CopyTempEngineData
void CopyTempEngineData()
Copy data from temporary engine array into the real engine pool.
Definition: engine_sl.cpp:118
IsSavegameVersionBefore
static bool IsSavegameVersionBefore(SaveLoadVersion major, byte minor=0)
Checks whether the savegame is below major.
Definition: saveload.h:816
SLV_45
@ SLV_45
45 8501
Definition: saveload.h:97
FreeEngine
static void FreeEngine(Engine *e)
Deallocate an Engine constructed by CallocEngine.
Definition: engine_sl.cpp:67
SlObject
void SlObject(void *object, const SaveLoad *sld)
Main SaveLoad function.
Definition: saveload.cpp:1612
EngineIDMapping
Definition: engine_base.h:163
SLV_2
@ SLV_2
2.0 0.3.0 2.1 0.3.1, 0.3.2
Definition: saveload.h:34
Engine::reliability_final
uint16 reliability_final
Final reliability of the engine.
Definition: engine_base.h:29
SL_MAX_VERSION
@ SL_MAX_VERSION
Highest possible saveload version.
Definition: saveload.h:329
StringID
uint32 StringID
Numeric value that represents a string, independent of the selected language.
Definition: strings_type.h:16
Engine::name
std::string name
Custom name of engine.
Definition: engine_base.h:22
SLE_VAR
#define SLE_VAR(base, variable, type)
Storage of a variable in every version of a savegame.
Definition: saveload.h:622
Pool::PoolItem<&_engine_pool >::Iterate
static Pool::IterateWrapper< Titem > Iterate(size_t from=0)
Returns an iterable ensemble of all valid Titem.
Definition: pool_type.hpp:378
SLV_193
@ SLV_193
193 26802
Definition: saveload.h:275
_engine_id_mapping_desc
static const SaveLoad _engine_id_mapping_desc[]
Save and load the mapping between the engine id in the pool, and the grf file it came from.
Definition: engine_sl.cpp:171
Engine::preview_wait
byte preview_wait
Daily countdown timer for timeout of offering the engine to the preview_company company.
Definition: engine_base.h:36
saveload_internal.h
lengthof
#define lengthof(x)
Return the length of an fixed size array.
Definition: stdafx.h:369
INVALID_COMPANY
@ INVALID_COMPANY
An invalid company.
Definition: company_type.h:30
SLV_121
@ SLV_121
121 16694
Definition: saveload.h:188
Engine::flags
byte flags
Flags of the engine.
Definition: engine_base.h:33
free
static void free(const void *ptr)
Version of the standard free that accepts const pointers.
Definition: stdafx.h:456
SaveLoad
SaveLoad type struct.
Definition: saveload.h:517
SlArray
void SlArray(void *array, size_t length, VarType conv)
Save/Load an array.
Definition: saveload.cpp:1051
Engine::intro_date
Date intro_date
Date of introduction of the engine.
Definition: engine_base.h:23
SlIterateArray
int SlIterateArray()
Iterate through the elements of an array and read the whole thing.
Definition: saveload.cpp:631
Engine::reliability
uint16 reliability
Current reliability of the engine.
Definition: engine_base.h:25
Engine::duration_phase_2
uint16 duration_phase_2
Second reliability phase in months, keeping reliability_max.
Definition: engine_base.h:31