OpenTTD Source  20241120-master-g6d3adc6169
articulated_vehicles.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 #include "core/bitmath_func.hpp"
12 #include "core/random_func.hpp"
13 #include "train.h"
14 #include "roadveh.h"
15 #include "vehicle_func.h"
16 #include "engine_func.h"
17 #include "company_func.h"
18 #include "newgrf.h"
19 
20 #include "table/strings.h"
21 
22 #include "safeguards.h"
23 
24 static const uint MAX_ARTICULATED_PARTS = 100;
25 
34 static EngineID GetNextArticulatedPart(uint index, EngineID front_type, Vehicle *front = nullptr, bool *mirrored = nullptr)
35 {
36  assert(front == nullptr || front->engine_type == front_type);
37 
38  const Engine *front_engine = Engine::Get(front_type);
39 
40  uint16_t callback = GetVehicleCallback(CBID_VEHICLE_ARTIC_ENGINE, index, 0, front_type, front);
41  if (callback == CALLBACK_FAILED) return INVALID_ENGINE;
42 
43  if (front_engine->GetGRF()->grf_version < 8) {
44  /* 8 bits, bit 7 for mirroring */
45  callback = GB(callback, 0, 8);
46  if (callback == 0xFF) return INVALID_ENGINE;
47  if (mirrored != nullptr) *mirrored = HasBit(callback, 7);
48  callback = GB(callback, 0, 7);
49  } else {
50  /* 15 bits, bit 14 for mirroring */
51  if (callback == 0x7FFF) return INVALID_ENGINE;
52  if (mirrored != nullptr) *mirrored = HasBit(callback, 14);
53  callback = GB(callback, 0, 14);
54  }
55 
56  return GetNewEngineID(front_engine->GetGRF(), front_engine->type, callback);
57 }
58 
64 bool IsArticulatedEngine(EngineID engine_type)
65 {
66  return HasBit(EngInfo(engine_type)->callback_mask, CBM_VEHICLE_ARTIC_ENGINE);
67 }
68 
75 uint CountArticulatedParts(EngineID engine_type, bool purchase_window)
76 {
77  if (!HasBit(EngInfo(engine_type)->callback_mask, CBM_VEHICLE_ARTIC_ENGINE)) return 0;
78 
79  /* If we can't allocate a vehicle now, we can't allocate it in the command
80  * either, so it doesn't matter how many articulated parts there are. */
81  if (!Vehicle::CanAllocateItem()) return 0;
82 
83  Vehicle *v = nullptr;
84  if (!purchase_window) {
85  v = new Vehicle();
86  v->engine_type = engine_type;
88  }
89 
90  uint i;
91  for (i = 1; i < MAX_ARTICULATED_PARTS; i++) {
92  if (GetNextArticulatedPart(i, engine_type, v) == INVALID_ENGINE) break;
93  }
94 
95  delete v;
96 
97  return i - 1;
98 }
99 
100 
107 static inline uint16_t GetVehicleDefaultCapacity(EngineID engine, CargoID *cargo_type)
108 {
109  const Engine *e = Engine::Get(engine);
110  CargoID cargo = (e->CanCarryCargo() ? e->GetDefaultCargoType() : INVALID_CARGO);
111  if (cargo_type != nullptr) *cargo_type = cargo;
112  if (!IsValidCargoID(cargo)) return 0;
113  return e->GetDisplayDefaultCapacity();
114 }
115 
122 static inline CargoTypes GetAvailableVehicleCargoTypes(EngineID engine, bool include_initial_cargo_type)
123 {
124  const Engine *e = Engine::Get(engine);
125  if (!e->CanCarryCargo()) return 0;
126 
127  CargoTypes cargoes = e->info.refit_mask;
128 
129  if (include_initial_cargo_type) {
130  SetBit(cargoes, e->GetDefaultCargoType());
131  }
132 
133  return cargoes;
134 }
135 
142 {
143  CargoArray capacity{};
144  const Engine *e = Engine::Get(engine);
145 
146  CargoID cargo_type;
147  uint16_t cargo_capacity = GetVehicleDefaultCapacity(engine, &cargo_type);
148  if (cargo_type < NUM_CARGO) capacity[cargo_type] = cargo_capacity;
149 
150  if (!e->IsGroundVehicle()) return capacity;
151 
152  if (!HasBit(e->info.callback_mask, CBM_VEHICLE_ARTIC_ENGINE)) return capacity;
153 
154  for (uint i = 1; i < MAX_ARTICULATED_PARTS; i++) {
155  EngineID artic_engine = GetNextArticulatedPart(i, engine);
156  if (artic_engine == INVALID_ENGINE) break;
157 
158  cargo_capacity = GetVehicleDefaultCapacity(artic_engine, &cargo_type);
159  if (cargo_type < NUM_CARGO) capacity[cargo_type] += cargo_capacity;
160  }
161 
162  return capacity;
163 }
164 
171 {
172  CargoTypes cargoes = 0;
173  const Engine *e = Engine::Get(engine);
174 
175  CargoID cargo_type;
176  uint16_t cargo_capacity = GetVehicleDefaultCapacity(engine, &cargo_type);
177  if (cargo_type < NUM_CARGO && cargo_capacity > 0) SetBit(cargoes, cargo_type);
178 
179  if (!e->IsGroundVehicle()) return cargoes;
180 
181  if (!HasBit(e->info.callback_mask, CBM_VEHICLE_ARTIC_ENGINE)) return cargoes;
182 
183  for (uint i = 1; i < MAX_ARTICULATED_PARTS; i++) {
184  EngineID artic_engine = GetNextArticulatedPart(i, engine);
185  if (artic_engine == INVALID_ENGINE) break;
186 
187  cargo_capacity = GetVehicleDefaultCapacity(artic_engine, &cargo_type);
188  if (cargo_type < NUM_CARGO && cargo_capacity > 0) SetBit(cargoes, cargo_type);
189  }
190 
191  return cargoes;
192 }
193 
200 {
201  if (IsEngineRefittable(engine)) return true;
202 
203  const Engine *e = Engine::Get(engine);
204  if (!e->IsGroundVehicle()) return false;
205 
206  if (!HasBit(e->info.callback_mask, CBM_VEHICLE_ARTIC_ENGINE)) return false;
207 
208  for (uint i = 1; i < MAX_ARTICULATED_PARTS; i++) {
209  EngineID artic_engine = GetNextArticulatedPart(i, engine);
210  if (artic_engine == INVALID_ENGINE) break;
211 
212  if (IsEngineRefittable(artic_engine)) return true;
213  }
214 
215  return false;
216 }
217 
225 void GetArticulatedRefitMasks(EngineID engine, bool include_initial_cargo_type, CargoTypes *union_mask, CargoTypes *intersection_mask)
226 {
227  const Engine *e = Engine::Get(engine);
228  CargoTypes veh_cargoes = GetAvailableVehicleCargoTypes(engine, include_initial_cargo_type);
229  *union_mask = veh_cargoes;
230  *intersection_mask = (veh_cargoes != 0) ? veh_cargoes : ALL_CARGOTYPES;
231 
232  if (!e->IsGroundVehicle()) return;
233  if (!HasBit(e->info.callback_mask, CBM_VEHICLE_ARTIC_ENGINE)) return;
234 
235  for (uint i = 1; i < MAX_ARTICULATED_PARTS; i++) {
236  EngineID artic_engine = GetNextArticulatedPart(i, engine);
237  if (artic_engine == INVALID_ENGINE) break;
238 
239  veh_cargoes = GetAvailableVehicleCargoTypes(artic_engine, include_initial_cargo_type);
240  *union_mask |= veh_cargoes;
241  if (veh_cargoes != 0) *intersection_mask &= veh_cargoes;
242  }
243 }
244 
251 CargoTypes GetUnionOfArticulatedRefitMasks(EngineID engine, bool include_initial_cargo_type)
252 {
253  CargoTypes union_mask, intersection_mask;
254  GetArticulatedRefitMasks(engine, include_initial_cargo_type, &union_mask, &intersection_mask);
255  return union_mask;
256 }
257 
265 CargoTypes GetCargoTypesOfArticulatedVehicle(const Vehicle *v, CargoID *cargo_type)
266 {
267  CargoTypes cargoes = 0;
268  CargoID first_cargo = INVALID_CARGO;
269 
270  do {
271  if (IsValidCargoID(v->cargo_type) && v->GetEngine()->CanCarryCargo()) {
272  SetBit(cargoes, v->cargo_type);
273  if (!IsValidCargoID(first_cargo)) first_cargo = v->cargo_type;
274  if (first_cargo != v->cargo_type) {
275  if (cargo_type != nullptr) {
276  *cargo_type = INVALID_CARGO;
277  cargo_type = nullptr;
278  }
279  }
280  }
281 
282  v = v->HasArticulatedPart() ? v->GetNextArticulatedPart() : nullptr;
283  } while (v != nullptr);
284 
285  if (cargo_type != nullptr) *cargo_type = first_cargo;
286  return cargoes;
287 }
288 
298 {
299  const Engine *engine = v->GetEngine();
300 
301  CargoTypes purchase_refit_union, purchase_refit_intersection;
302  GetArticulatedRefitMasks(v->engine_type, true, &purchase_refit_union, &purchase_refit_intersection);
303  CargoArray purchase_default_capacity = GetCapacityOfArticulatedParts(v->engine_type);
304 
305  CargoTypes real_refit_union = 0;
306  CargoTypes real_refit_intersection = ALL_CARGOTYPES;
307  CargoTypes real_default_cargoes = 0;
308 
309  do {
310  CargoTypes refit_mask = GetAvailableVehicleCargoTypes(v->engine_type, true);
311  real_refit_union |= refit_mask;
312  if (refit_mask != 0) real_refit_intersection &= refit_mask;
313 
314  assert(v->cargo_type < NUM_CARGO);
315  if (v->cargo_cap > 0) SetBit(real_default_cargoes, v->cargo_type);
316 
317  v = v->HasArticulatedPart() ? v->GetNextArticulatedPart() : nullptr;
318  } while (v != nullptr);
319 
320  /* Check whether the vehicle carries more cargoes than expected */
321  bool carries_more = false;
322  for (CargoID cid : SetCargoBitIterator(real_default_cargoes)) {
323  if (purchase_default_capacity[cid] == 0) {
324  carries_more = true;
325  break;
326  }
327  }
328 
329  /* show a warning once for each GRF after each game load */
330  if (real_refit_union != purchase_refit_union || real_refit_intersection != purchase_refit_intersection || carries_more) {
331  ShowNewGrfVehicleError(engine->index, STR_NEWGRF_BUGGY, STR_NEWGRF_BUGGY_ARTICULATED_CARGO, GBUG_VEH_REFIT, false);
332  }
333 }
334 
340 {
341  VehicleType type = first->type;
342  if (!HasBit(EngInfo(first->engine_type)->callback_mask, CBM_VEHICLE_ARTIC_ENGINE)) return;
343 
344  Vehicle *v = first;
345  for (uint i = 1; i < MAX_ARTICULATED_PARTS; i++) {
346  bool flip_image;
347  EngineID engine_type = GetNextArticulatedPart(i, first->engine_type, first, &flip_image);
348  if (engine_type == INVALID_ENGINE) return;
349 
350  /* In the (very rare) case the GRF reported wrong number of articulated parts
351  * and we run out of available vehicles, bail out. */
352  if (!Vehicle::CanAllocateItem()) return;
353 
355  gcache->first_engine = v->engine_type; // Needs to be set before first callback
356 
357  const Engine *e_artic = Engine::Get(engine_type);
358  switch (type) {
359  default: NOT_REACHED();
360 
361  case VEH_TRAIN: {
362  Train *front = Train::From(first);
363  Train *t = new Train();
364  v->SetNext(t);
365  v = t;
366 
367  t->subtype = 0;
368  t->track = front->track;
369  t->railtype = front->railtype;
370 
371  t->spritenum = e_artic->u.rail.image_index;
372  if (e_artic->CanCarryCargo()) {
373  t->cargo_type = e_artic->GetDefaultCargoType();
374  t->cargo_cap = e_artic->u.rail.capacity; // Callback 36 is called when the consist is finished
375  } else {
376  t->cargo_type = front->cargo_type; // Needed for livery selection
377  t->cargo_cap = 0;
378  }
379  t->refit_cap = 0;
380 
381  t->SetArticulatedPart();
382  break;
383  }
384 
385  case VEH_ROAD: {
386  RoadVehicle *front = RoadVehicle::From(first);
387  RoadVehicle *rv = new RoadVehicle();
388  v->SetNext(rv);
389  v = rv;
390 
391  rv->subtype = 0;
392  gcache->cached_veh_length = VEHICLE_LENGTH; // Callback is called when the consist is finished
393  rv->state = RVSB_IN_DEPOT;
394 
395  rv->roadtype = front->roadtype;
397 
398  rv->spritenum = e_artic->u.road.image_index;
399  if (e_artic->CanCarryCargo()) {
400  rv->cargo_type = e_artic->GetDefaultCargoType();
401  assert(IsValidCargoID(rv->cargo_type));
402  rv->cargo_cap = e_artic->u.road.capacity; // Callback 36 is called when the consist is finished
403  } else {
404  rv->cargo_type = front->cargo_type; // Needed for livery selection
405  rv->cargo_cap = 0;
406  }
407  rv->refit_cap = 0;
408 
409  rv->SetArticulatedPart();
410  break;
411  }
412  }
413 
414  /* get common values from first engine */
415  v->direction = first->direction;
416  v->owner = first->owner;
417  v->tile = first->tile;
418  v->x_pos = first->x_pos;
419  v->y_pos = first->y_pos;
420  v->z_pos = first->z_pos;
423  v->build_year = first->build_year;
424  v->vehstatus = first->vehstatus & ~VS_STOPPED;
425 
426  v->cargo_subtype = 0;
427  v->max_age = 0;
428  v->engine_type = engine_type;
429  v->value = 0;
430  v->sprite_cache.sprite_seq.Set(SPR_IMG_QUERY);
431  v->random_bits = Random();
432 
433  if (flip_image) v->spritenum++;
434 
435  if (v->type == VEH_TRAIN && TestVehicleBuildProbability(v, v->engine_type, BuildProbabilityType::Reversed)) SetBit(Train::From(v)->flags, VRF_REVERSE_DIRECTION);
436  v->UpdatePosition();
437  }
438 }
CargoTypes GetUnionOfArticulatedRefitMasks(EngineID engine, bool include_initial_cargo_type)
Ors the refit_masks of all articulated parts.
CargoTypes GetCargoTypesOfArticulatedVehicle(const Vehicle *v, CargoID *cargo_type)
Get cargo mask of all cargoes carried by an articulated vehicle.
bool IsArticulatedEngine(EngineID engine_type)
Does a NewGRF report that this should be an articulated vehicle?
static const uint MAX_ARTICULATED_PARTS
Maximum of articulated parts per vehicle, i.e. when to abort calling the articulated vehicle callback...
void AddArticulatedParts(Vehicle *first)
Add the remaining articulated parts to the given vehicle.
CargoArray GetCapacityOfArticulatedParts(EngineID engine)
Get the capacity of the parts of a given engine.
bool IsArticulatedVehicleRefittable(EngineID engine)
Checks whether any of the articulated parts is refittable.
void GetArticulatedRefitMasks(EngineID engine, bool include_initial_cargo_type, CargoTypes *union_mask, CargoTypes *intersection_mask)
Merges the refit_masks of all articulated parts.
void CheckConsistencyOfArticulatedVehicle(const Vehicle *v)
Checks whether the specs of freshly build articulated vehicles are consistent with the information sp...
CargoTypes GetCargoTypesOfArticulatedParts(EngineID engine)
Get the cargo mask of the parts of a given engine.
static EngineID GetNextArticulatedPart(uint index, EngineID front_type, Vehicle *front=nullptr, bool *mirrored=nullptr)
Determines the next articulated part to attach.
uint CountArticulatedParts(EngineID engine_type, bool purchase_window)
Count the number of articulated parts of an engine.
static uint16_t GetVehicleDefaultCapacity(EngineID engine, CargoID *cargo_type)
Returns the default (non-refitted) capacity of a specific EngineID.
static CargoTypes GetAvailableVehicleCargoTypes(EngineID engine, bool include_initial_cargo_type)
Returns all cargoes a vehicle can carry.
Functions related to bit mathematics.
constexpr debug_inline bool HasBit(const T x, const uint8_t y)
Checks if a bit in a value is set.
constexpr T SetBit(T &x, const uint8_t y)
Set a bit in a variable.
constexpr static debug_inline uint GB(const T x, const uint8_t s, const uint8_t n)
Fetch n bits from x, started at bit s.
uint8_t CargoID
Cargo slots to indicate a cargo type within a game.
Definition: cargo_type.h:22
bool IsValidCargoID(CargoID t)
Test whether cargo type is not INVALID_CARGO.
Definition: cargo_type.h:107
static const CargoID NUM_CARGO
Maximum number of cargo types in a game.
Definition: cargo_type.h:74
CompanyID _current_company
Company currently doing an action.
Definition: company_cmd.cpp:53
Functions related to companies.
bool IsEngineRefittable(EngineID engine)
Check if an engine is refittable.
Definition: engine.cpp:1259
Functions related to engines.
static const EngineID INVALID_ENGINE
Constant denoting an invalid engine.
Definition: engine_type.h:206
uint16_t EngineID
Unique identification number of an engine.
Definition: engine_type.h:21
EngineID GetNewEngineID(const GRFFile *file, VehicleType type, uint16_t internal_id)
Return the ID of a new engine.
Definition: newgrf.cpp:704
Base for the NewGRF implementation.
@ CBID_VEHICLE_ARTIC_ENGINE
Builds articulated engines for trains and RVs.
@ CBM_VEHICLE_ARTIC_ENGINE
Add articulated engines (trains and road vehicles)
static const uint CALLBACK_FAILED
Different values for Callback result evaluations.
@ GBUG_VEH_REFIT
Articulated vehicles carry different cargoes resp. are differently refittable than specified in purch...
Definition: newgrf_config.h:44
bool TestVehicleBuildProbability(Vehicle *v, EngineID engine, BuildProbabilityType type)
Test for vehicle build probablity type.
uint16_t GetVehicleCallback(CallbackID callback, uint32_t param1, uint32_t param2, EngineID engine, const Vehicle *v)
Evaluate a newgrf callback for vehicles.
Pseudo random number generator.
Road vehicle states.
@ RVSB_IN_DEPOT
The vehicle is in a depot.
Definition: roadveh.h:38
A number of safeguards to prevent using unsafe methods.
Definition of base types and functions in a cross-platform compatible way.
VehicleType type
Type of vehicle.
Definition: vehicle_type.h:51
Class for storing amounts of cargo.
Definition: cargo_type.h:114
uint16_t callback_mask
Bitmask of vehicle callbacks that have to be called.
Definition: engine_type.h:156
CargoID GetDefaultCargoType() const
Determines the default cargo type of an engine.
Definition: engine_base.h:96
VehicleType type
Vehicle type, ie VEH_ROAD, VEH_TRAIN, etc.
Definition: engine_base.h:56
const GRFFile * GetGRF() const
Retrieve the NewGRF the engine is tied to.
Definition: engine_base.h:167
uint GetDisplayDefaultCapacity(uint16_t *mail_capacity=nullptr) const
Determines the default cargo capacity of an engine for display purposes.
Definition: engine_base.h:116
bool CanCarryCargo() const
Determines whether an engine can carry something.
Definition: engine.cpp:168
bool IsGroundVehicle() const
Check if the engine is a ground vehicle.
Definition: engine_base.h:157
Cached, frequently calculated values.
EngineID first_engine
Cached EngineID of the front vehicle. INVALID_ENGINE for the front vehicle itself.
uint8_t cached_veh_length
Length of this vehicle in units of 1/VEHICLE_LENGTH of normal length. It is cached because this can b...
void SetArticulatedPart()
Set a vehicle to be an articulated part.
VehicleSpriteSeq sprite_seq
Vehicle appearance.
Definition: vehicle_base.h:200
Tindex index
Index of this pool item.
Definition: pool_type.hpp:238
static Titem * Get(size_t index)
Returns Titem with given index.
Definition: pool_type.hpp:339
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
uint8_t capacity
Cargo capacity of vehicle; For multiheaded engines the capacity of each single engine.
Definition: engine_type.h:54
Buses, trucks and trams belong to this class.
Definition: roadveh.h:98
uint8_t state
Definition: roadveh.h:100
RoadTypes compatible_roadtypes
NOSAVE: Roadtypes this consist is powered on.
Definition: roadveh.h:110
RoadType roadtype
NOSAVE: Roadtype of this vehicle.
Definition: roadveh.h:108
Iterable ensemble of each set bit in a value.
static T * From(Vehicle *v)
Converts a Vehicle to SpecializedVehicle with type checking.
'Train' is either a loco or a wagon.
Definition: train.h:89
void Set(SpriteID sprite)
Assign a single sprite to the sequence.
Definition: vehicle_base.h:168
Vehicle data structure.
Definition: vehicle_base.h:244
EngineID engine_type
The type of engine used for this vehicle.
Definition: vehicle_base.h:323
int32_t z_pos
z coordinate.
Definition: vehicle_base.h:306
Direction direction
facing
Definition: vehicle_base.h:307
Vehicle * GetNextArticulatedPart() const
Get the next part of an articulated engine.
Definition: vehicle_base.h:973
const Engine * GetEngine() const
Retrieves the engine of the vehicle.
Definition: vehicle.cpp:747
TimerGameEconomy::Date date_of_last_service
Last economy date the vehicle had a service at a depot.
Definition: vehicle_base.h:295
uint16_t cargo_cap
total capacity
Definition: vehicle_base.h:344
uint8_t subtype
subtype (Filled with values from AircraftSubType/DisasterSubType/EffectVehicleType/GroundVehicleSubty...
Definition: vehicle_base.h:355
uint16_t random_bits
Bits used for randomized variational spritegroups.
Definition: vehicle_base.h:335
bool HasArticulatedPart() const
Check if an engine has an articulated part.
Definition: vehicle_base.h:963
TimerGameCalendar::Date date_of_last_service_newgrf
Last calendar date the vehicle had a service at a depot, unchanged by the date cheat to protect again...
Definition: vehicle_base.h:296
CargoID cargo_type
type of cargo this vehicle is carrying
Definition: vehicle_base.h:342
int32_t y_pos
y coordinate.
Definition: vehicle_base.h:305
int32_t x_pos
x coordinate.
Definition: vehicle_base.h:304
Money value
Value of the vehicle.
Definition: vehicle_base.h:275
uint16_t refit_cap
Capacity left over from before last refit.
Definition: vehicle_base.h:345
uint8_t vehstatus
Status.
Definition: vehicle_base.h:354
GroundVehicleCache * GetGroundVehicleCache()
Access the ground vehicle cache of the vehicle.
Definition: vehicle.cpp:3155
uint8_t spritenum
currently displayed sprite index 0xfd == custom sprite, 0xfe == custom second head sprite 0xff == res...
Definition: vehicle_base.h:315
uint8_t cargo_subtype
Used for livery refits (NewGRF variations)
Definition: vehicle_base.h:343
void SetNext(Vehicle *next)
Set the next vehicle of this vehicle.
Definition: vehicle.cpp:2937
TimerGameCalendar::Date max_age
Maximum age.
Definition: vehicle_base.h:294
MutableSpriteCache sprite_cache
Cache of sprites and values related to recalculating them, see MutableSpriteCache.
Definition: vehicle_base.h:368
TileIndex tile
Current tile index.
Definition: vehicle_base.h:264
void UpdatePosition()
Update the position of the vehicle.
Definition: vehicle.cpp:1693
TimerGameCalendar::Year build_year
Year the vehicle has been built.
Definition: vehicle_base.h:291
Owner owner
Which company owns the vehicle?
Definition: vehicle_base.h:309
Base for the train class.
@ VRF_REVERSE_DIRECTION
Reverse the visible direction of the vehicle.
Definition: train.h:28
void ShowNewGrfVehicleError(EngineID engine, StringID part1, StringID part2, GRFBugs bug_type, bool critical)
Displays a "NewGrf Bug" error message for a engine, and pauses the game if not networking.
Definition: vehicle.cpp:317
@ VS_STOPPED
Vehicle is stopped by the player.
Definition: vehicle_base.h:34
Functions related to vehicles.
VehicleType
Available vehicle types.
Definition: vehicle_type.h:21
@ VEH_ROAD
Road vehicle type.
Definition: vehicle_type.h:25
@ VEH_TRAIN
Train vehicle type.
Definition: vehicle_type.h:24
static const uint VEHICLE_LENGTH
The length of a vehicle in tile units.
Definition: vehicle_type.h:69