/* * This file is part of OpenTTD. * 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. * 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. * 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 . */ /** @file newgrf_engine.cpp NewGRF handling of engines. */ #include "stdafx.h" #include "debug.h" #include "train.h" #include "roadveh.h" #include "company_func.h" #include "newgrf_cargo.h" #include "newgrf_spritegroup.h" #include "date_func.h" #include "vehicle_func.h" #include "core/random_func.hpp" #include "aircraft.h" #include "station_base.h" #include "company_base.h" #include "newgrf_railtype.h" #include "newgrf_roadtype.h" #include "ship.h" #include "safeguards.h" struct WagonOverride { EngineID *train_id; uint trains; CargoID cargo; const SpriteGroup *group; }; void SetWagonOverrideSprites(EngineID engine, CargoID cargo, const SpriteGroup *group, EngineID *train_id, uint trains) { Engine *e = Engine::Get(engine); WagonOverride *wo; assert(cargo < NUM_CARGO + 2); // Include CT_DEFAULT and CT_PURCHASE pseudo cargoes. e->overrides_count++; e->overrides = ReallocT(e->overrides, e->overrides_count); wo = &e->overrides[e->overrides_count - 1]; wo->group = group; wo->cargo = cargo; wo->trains = trains; wo->train_id = MallocT(trains); memcpy(wo->train_id, train_id, trains * sizeof *train_id); } const SpriteGroup *GetWagonOverrideSpriteSet(EngineID engine, CargoID cargo, EngineID overriding_engine) { const Engine *e = Engine::Get(engine); for (uint i = 0; i < e->overrides_count; i++) { const WagonOverride *wo = &e->overrides[i]; if (wo->cargo != cargo && wo->cargo != CT_DEFAULT) continue; for (uint j = 0; j < wo->trains; j++) { if (wo->train_id[j] == overriding_engine) return wo->group; } } return nullptr; } /** * Unload all wagon override sprite groups. */ void UnloadWagonOverrides(Engine *e) { for (uint i = 0; i < e->overrides_count; i++) { WagonOverride *wo = &e->overrides[i]; free(wo->train_id); } free(e->overrides); e->overrides_count = 0; e->overrides = nullptr; } void SetCustomEngineSprites(EngineID engine, byte cargo, const SpriteGroup *group) { Engine *e = Engine::Get(engine); assert(cargo < lengthof(e->grf_prop.spritegroup)); if (e->grf_prop.spritegroup[cargo] != nullptr) { grfmsg(6, "SetCustomEngineSprites: engine %d cargo %d already has group -- replacing", engine, cargo); } e->grf_prop.spritegroup[cargo] = group; } /** * Tie a GRFFile entry to an engine, to allow us to retrieve GRF parameters * etc during a game. * @param engine Engine ID to tie the GRFFile to. * @param file Pointer of GRFFile to tie. */ void SetEngineGRF(EngineID engine, const GRFFile *file) { Engine *e = Engine::Get(engine); e->grf_prop.grffile = file; } static int MapOldSubType(const Vehicle *v) { switch (v->type) { case VEH_TRAIN: if (Train::From(v)->IsEngine()) return 0; if (Train::From(v)->IsFreeWagon()) return 4; return 2; case VEH_ROAD: case VEH_SHIP: return 0; case VEH_AIRCRAFT: case VEH_DISASTER: return v->subtype; case VEH_EFFECT: return v->subtype << 1; default: NOT_REACHED(); } } /* TTDP style aircraft movement states for GRF Action 2 Var 0xE2 */ enum TTDPAircraftMovementStates { AMS_TTDP_HANGAR, AMS_TTDP_TO_HANGAR, AMS_TTDP_TO_PAD1, AMS_TTDP_TO_PAD2, AMS_TTDP_TO_PAD3, AMS_TTDP_TO_ENTRY_2_AND_3, AMS_TTDP_TO_ENTRY_2_AND_3_AND_H, AMS_TTDP_TO_JUNCTION, AMS_TTDP_LEAVE_RUNWAY, AMS_TTDP_TO_INWAY, AMS_TTDP_TO_RUNWAY, AMS_TTDP_TO_OUTWAY, AMS_TTDP_WAITING, AMS_TTDP_TAKEOFF, AMS_TTDP_TO_TAKEOFF, AMS_TTDP_CLIMBING, AMS_TTDP_FLIGHT_APPROACH, AMS_TTDP_UNUSED_0x11, AMS_TTDP_FLIGHT_TO_TOWER, AMS_TTDP_UNUSED_0x13, AMS_TTDP_FLIGHT_FINAL, AMS_TTDP_FLIGHT_DESCENT, AMS_TTDP_BRAKING, AMS_TTDP_HELI_TAKEOFF_AIRPORT, AMS_TTDP_HELI_TO_TAKEOFF_AIRPORT, AMS_TTDP_HELI_LAND_AIRPORT, AMS_TTDP_HELI_TAKEOFF_HELIPORT, AMS_TTDP_HELI_TO_TAKEOFF_HELIPORT, AMS_TTDP_HELI_LAND_HELIPORT, }; /** * Map OTTD aircraft movement states to TTDPatch style movement states * (VarAction 2 Variable 0xE2) */ static byte MapAircraftMovementState(const Aircraft *v) { const Station *st = GetTargetAirportIfValid(v); if (st == nullptr) return AMS_TTDP_FLIGHT_TO_TOWER; const AirportFTAClass *afc = st->airport.GetFTA(); uint16 amdflag = afc->MovingData(v->pos)->flag; switch (v->state) { case HANGAR: /* The international airport is a special case as helicopters can land in * front of the hangar. Helicopters also change their air.state to * AMED_HELI_LOWER some time before actually descending. */ /* This condition only occurs for helicopters, during descent, * to a landing by the hangar of an international airport. */ if (amdflag & AMED_HELI_LOWER) return AMS_TTDP_HELI_LAND_AIRPORT; /* This condition only occurs for helicopters, before starting descent, * to a landing by the hangar of an international airport. */ if (amdflag & AMED_SLOWTURN) return AMS_TTDP_FLIGHT_TO_TOWER; /* The final two conditions apply to helicopters or aircraft. * Has reached hangar? */ if (amdflag & AMED_EXACTPOS) return AMS_TTDP_HANGAR; /* Still moving towards hangar. */ return AMS_TTDP_TO_HANGAR; case TERM1: if (amdflag & AMED_EXACTPOS) return AMS_TTDP_TO_PAD1; return AMS_TTDP_TO_JUNCTION; case TERM2: if (amdflag & AMED_EXACTPOS) return AMS_TTDP_TO_PAD2; return AMS_TTDP_TO_ENTRY_2_AND_3_AND_H; case TERM3: case TERM4: case TERM5: case TERM6: case TERM7: case TERM8: /* TTDPatch only has 3 terminals, so treat these states the same */ if (amdflag & AMED_EXACTPOS) return AMS_TTDP_TO_PAD3; return AMS_TTDP_TO_ENTRY_2_AND_3_AND_H; case HELIPAD1: case HELIPAD2: case HELIPAD3: /* Will only occur for helicopters.*/ if (amdflag & AMED_HELI_LOWER) return AMS_TTDP_HELI_LAND_AIRPORT; // Descending. if (amdflag & AMED_SLOWTURN) return AMS_TTDP_FLIGHT_TO_TOWER; // Still hasn't started descent. return AMS_TTDP_TO_JUNCTION; // On the ground. case TAKEOFF: // Moving to takeoff position. return AMS_TTDP_TO_OUTWAY; case STARTTAKEOFF: // Accelerating down runway. return AMS_TTDP_TAKEOFF; case ENDTAKEOFF: // Ascent return AMS_TTDP_CLIMBING; case HELITAKEOFF: // Helicopter is moving to take off position. if (afc->delta_z == 0) { return amdflag & AMED_HELI_RAISE ? AMS_TTDP_HELI_TAKEOFF_AIRPORT : AMS_TTDP_TO_JUNCTION; } else { return AMS_TTDP_HELI_TAKEOFF_HELIPORT; } case FLYING: return amdflag & AMED_HOLD ? AMS_TTDP_FLIGHT_APPROACH : AMS_TTDP_FLIGHT_TO_TOWER; case LANDING: // Descent return AMS_TTDP_FLIGHT_DESCENT; case ENDLANDING: // On the runway braking if (amdflag & AMED_BRAKE) return AMS_TTDP_BRAKING; /* Landed - moving off runway */ return AMS_TTDP_TO_INWAY; case HELILANDING: case HELIENDLANDING: // Helicoptor is descending. if (amdflag & AMED_HELI_LOWER) { return afc->delta_z == 0 ? AMS_TTDP_HELI_LAND_AIRPORT : AMS_TTDP_HELI_LAND_HELIPORT; } else { return AMS_TTDP_FLIGHT_TO_TOWER; } default: return AMS_TTDP_HANGAR; } } /* TTDP style aircraft movement action for GRF Action 2 Var 0xE6 */ enum TTDPAircraftMovementActions { AMA_TTDP_IN_HANGAR, AMA_TTDP_ON_PAD1, AMA_TTDP_ON_PAD2, AMA_TTDP_ON_PAD3, AMA_TTDP_HANGAR_TO_PAD1, AMA_TTDP_HANGAR_TO_PAD2, AMA_TTDP_HANGAR_TO_PAD3, AMA_TTDP_LANDING_TO_PAD1, AMA_TTDP_LANDING_TO_PAD2, AMA_TTDP_LANDING_TO_PAD3, AMA_TTDP_PAD1_TO_HANGAR, AMA_TTDP_PAD2_TO_HANGAR, AMA_TTDP_PAD3_TO_HANGAR, AMA_TTDP_PAD1_TO_TAKEOFF, AMA_TTDP_PAD2_TO_TAKEOFF, AMA_TTDP_PAD3_TO_TAKEOFF, AMA_TTDP_HANGAR_TO_TAKOFF, AMA_TTDP_LANDING_TO_HANGAR, AMA_TTDP_IN_FLIGHT, }; /** * Map OTTD aircraft movement states to TTDPatch style movement actions * (VarAction 2 Variable 0xE6) * This is not fully supported yet but it's enough for Planeset. */ static byte MapAircraftMovementAction(const Aircraft *v) { switch (v->state) { case HANGAR: return (v->cur_speed > 0) ? AMA_TTDP_LANDING_TO_HANGAR : AMA_TTDP_IN_HANGAR; case TERM1: case HELIPAD1: return (v->current_order.IsType(OT_LOADING)) ? AMA_TTDP_ON_PAD1 : AMA_TTDP_LANDING_TO_PAD1; case TERM2: case HELIPAD2: return (v->current_order.IsType(OT_LOADING)) ? AMA_TTDP_ON_PAD2 : AMA_TTDP_LANDING_TO_PAD2; case TERM3: case TERM4: case TERM5: case TERM6: case TERM7: case TERM8: case HELIPAD3: return (v->current_order.IsType(OT_LOADING)) ? AMA_TTDP_ON_PAD3 : AMA_TTDP_LANDING_TO_PAD3; case TAKEOFF: // Moving to takeoff position case STARTTAKEOFF: // Accelerating down runway case ENDTAKEOFF: // Ascent case HELITAKEOFF: /* @todo Need to find which terminal (or hangar) we've come from. How? */ return AMA_TTDP_PAD1_TO_TAKEOFF; case FLYING: return AMA_TTDP_IN_FLIGHT; case LANDING: // Descent case ENDLANDING: // On the runway braking case HELILANDING: case HELIENDLANDING: /* @todo Need to check terminal we're landing to. Is it known yet? */ return (v->current_order.IsType(OT_GOTO_DEPOT)) ? AMA_TTDP_LANDING_TO_HANGAR : AMA_TTDP_LANDING_TO_PAD1; default: return AMA_TTDP_IN_HANGAR; } } /* virtual */ uint32 VehicleScopeResolver::GetRandomBits() const { return this->v == nullptr ? 0 : this->v->random_bits; } /* virtual */ uint32 VehicleScopeResolver::GetTriggers() const { return this->v == nullptr ? 0 : this->v->waiting_triggers; } /* virtual */ ScopeResolver *VehicleResolverObject::GetScope(VarSpriteGroupScope scope, byte relative) { switch (scope) { case VSG_SCOPE_SELF: return &this->self_scope; case VSG_SCOPE_PARENT: return &this->parent_scope; case VSG_SCOPE_RELATIVE: { int32 count = GB(relative, 0, 4); if (this->self_scope.v != nullptr && (relative != this->cached_relative_count || count == 0)) { /* Note: This caching only works as long as the VSG_SCOPE_RELATIVE cannot be used in * VarAct2 with procedure calls. */ if (count == 0) count = GetRegister(0x100); const Vehicle *v = nullptr; switch (GB(relative, 6, 2)) { default: NOT_REACHED(); case 0x00: // count back (away from the engine), starting at this vehicle v = this->self_scope.v; break; case 0x01: // count forward (toward the engine), starting at this vehicle v = this->self_scope.v; count = -count; break; case 0x02: // count back, starting at the engine v = this->parent_scope.v; break; case 0x03: { // count back, starting at the first vehicle in this chain of vehicles with the same ID, as for vehicle variable 41 const Vehicle *self = this->self_scope.v; for (const Vehicle *u = self->First(); u != self; u = u->Next()) { if (u->engine_type != self->engine_type) { v = nullptr; } else { if (v == nullptr) v = u; } } if (v == nullptr) v = self; break; } } this->relative_scope.SetVehicle(v->Move(count)); } return &this->relative_scope; } default: return ResolverObject::GetScope(scope, relative); } } /** * Determines the livery of an engine. * * This always uses dual company colours independent of GUI settings. So it is desync-safe. * * @param engine Engine type * @param v Vehicle, nullptr in purchase list. * @return Livery to use */ static const Livery *LiveryHelper(EngineID engine, const Vehicle *v) { const Livery *l; if (v == nullptr) { if (!Company::IsValidID(_current_company)) return nullptr; l = GetEngineLivery(engine, _current_company, INVALID_ENGINE, nullptr, LIT_ALL); } else if (v->IsGroundVehicle()) { l = GetEngineLivery(v->engine_type, v->owner, v->GetGroundVehicleCache()->first_engine, v, LIT_ALL); } else { l = GetEngineLivery(v->engine_type, v->owner, INVALID_ENGINE, v, LIT_ALL); } return l; } /** * Helper to get the position of a vehicle within a chain of vehicles. * @param v the vehicle to get the position of. * @param consecutive whether to look at the whole chain or the vehicles * with the same 'engine type'. * @return the position in the chain from front and tail and chain length. */ static uint32 PositionHelper(const Vehicle *v, bool consecutive) { const Vehicle *u; byte chain_before = 0; byte chain_after = 0; for (u = v->First(); u != v; u = u->Next()) { chain_before++; if (consecutive && u->engine_type != v->engine_type) chain_before = 0; } while (u->Next() != nullptr && (!consecutive || u->Next()->engine_type == v->engine_type)) { chain_after++; u = u->Next(); } return chain_before | chain_after << 8 | (chain_before + chain_after + consecutive) << 16; } static uint32 VehicleGetVariable(Vehicle *v, const VehicleScopeResolver *object, byte variable, uint32 parameter, bool *available) { /* Calculated vehicle parameters */ switch (variable) { case 0x25: // Get engine GRF ID return v->GetGRFID(); case 0x40: // Get length of consist if (!HasBit(v->grf_cache.cache_valid, NCVV_POSITION_CONSIST_LENGTH)) { v->grf_cache.position_consist_length = PositionHelper(v, false); SetBit(v->grf_cache.cache_valid, NCVV_POSITION_CONSIST_LENGTH); } return v->grf_cache.position_consist_length; case 0x41: // Get length of same consecutive wagons if (!HasBit(v->grf_cache.cache_valid, NCVV_POSITION_SAME_ID_LENGTH)) { v->grf_cache.position_same_id_length = PositionHelper(v, true); SetBit(v->grf_cache.cache_valid, NCVV_POSITION_SAME_ID_LENGTH); } return v->grf_cache.position_same_id_length; case 0x42: { // Consist cargo information if (!HasBit(v->grf_cache.cache_valid, NCVV_CONSIST_CARGO_INFORMATION)) { const Vehicle *u; byte cargo_classes = 0; uint8 common_cargoes[NUM_CARGO]; uint8 common_subtypes[256]; byte user_def_data = 0; CargoID common_cargo_type = CT_INVALID; uint8 common_subtype = 0xFF; // Return 0xFF if nothing is carried /* Reset our arrays */ memset(common_cargoes, 0, sizeof(common_cargoes)); memset(common_subtypes, 0, sizeof(common_subtypes)); for (u = v; u != nullptr; u = u->Next()) { if (v->type == VEH_TRAIN) user_def_data |= Train::From(u)->tcache.user_def_data; /* Skip empty engines */ if (!u->GetEngine()->CanCarryCargo()) continue; cargo_classes |= CargoSpec::Get(u->cargo_type)->classes; common_cargoes[u->cargo_type]++; } /* Pick the most common cargo type */ uint common_cargo_best_amount = 0; for (CargoID cargo = 0; cargo < NUM_CARGO; cargo++) { if (common_cargoes[cargo] > common_cargo_best_amount) { common_cargo_best_amount = common_cargoes[cargo]; common_cargo_type = cargo; } } /* Count subcargo types of common_cargo_type */ for (u = v; u != nullptr; u = u->Next()) { /* Skip empty engines and engines not carrying common_cargo_type */ if (u->cargo_type != common_cargo_type || !u->GetEngine()->CanCarryCargo()) continue; common_subtypes[u->cargo_subtype]++; } /* Pick the most common subcargo type*/ uint common_subtype_best_amount = 0; for (uint i = 0; i < lengthof(common_subtypes); i++) { if (common_subtypes[i] > common_subtype_best_amount) { common_subtype_best_amount = common_subtypes[i]; common_subtype = i; } } /* Note: We have to store the untranslated cargotype in the cache as the cache can be read by different NewGRFs, * which will need different translations */ v->grf_cache.consist_cargo_information = cargo_classes | (common_cargo_type << 8) | (common_subtype << 16) | (user_def_data << 24); SetBit(v->grf_cache.cache_valid, NCVV_CONSIST_CARGO_INFORMATION); } /* The cargo translation is specific to the accessing GRF, and thus cannot be cached. */ CargoID common_cargo_type = (v->grf_cache.consist_cargo_information >> 8) & 0xFF; /* Note: * - Unlike everywhere else the cargo translation table is only used since grf version 8, not 7. * - For translating the cargo type we need to use the GRF which is resolving the variable, which * is object->ro.grffile. * In case of CBID_TRAIN_ALLOW_WAGON_ATTACH this is not the same as v->GetGRF(). * - The grffile == nullptr case only happens if this function is called for default vehicles. * And this is only done by CheckCaches(). */ const GRFFile *grffile = object->ro.grffile; uint8 common_bitnum = (common_cargo_type == CT_INVALID) ? 0xFF : (grffile == nullptr || grffile->grf_version < 8) ? CargoSpec::Get(common_cargo_type)->bitnum : grffile->cargo_map[common_cargo_type]; return (v->grf_cache.consist_cargo_information & 0xFFFF00FF) | common_bitnum << 8; } case 0x43: // Company information if (!HasBit(v->grf_cache.cache_valid, NCVV_COMPANY_INFORMATION)) { v->grf_cache.company_information = GetCompanyInfo(v->owner, LiveryHelper(v->engine_type, v)); SetBit(v->grf_cache.cache_valid, NCVV_COMPANY_INFORMATION); } return v->grf_cache.company_information; case 0x44: // Aircraft information if (v->type != VEH_AIRCRAFT || !Aircraft::From(v)->IsNormalAircraft()) return UINT_MAX; { const Vehicle *w = v->Next(); uint16 altitude = ClampToU16(v->z_pos - w->z_pos); // Aircraft height - shadow height byte airporttype = ATP_TTDP_LARGE; const Station *st = GetTargetAirportIfValid(Aircraft::From(v)); if (st != nullptr && st->airport.tile != INVALID_TILE) { airporttype = st->airport.GetSpec()->ttd_airport_type; } return (Clamp(altitude, 0, 0xFF) << 8) | airporttype; } case 0x45: { // Curvature info /* Format: xxxTxBxF * F - previous wagon to current wagon, 0 if vehicle is first * B - current wagon to next wagon, 0 if wagon is last * T - previous wagon to next wagon, 0 in an S-bend */ if (!v->IsGroundVehicle()) return 0; const Vehicle *u_p = v->Previous(); const Vehicle *u_n = v->Next(); DirDiff f = (u_p == nullptr) ? DIRDIFF_SAME : DirDifference(u_p->direction, v->direction); DirDiff b = (u_n == nullptr) ? DIRDIFF_SAME : DirDifference(v->direction, u_n->direction); DirDiff t = ChangeDirDiff(f, b); return ((t > DIRDIFF_REVERSE ? t | 8 : t) << 16) | ((b > DIRDIFF_REVERSE ? b | 8 : b) << 8) | ( f > DIRDIFF_REVERSE ? f | 8 : f); } case 0x46: // Motion counter return v->motion_counter; case 0x47: { // Vehicle cargo info /* Format: ccccwwtt * tt - the cargo type transported by the vehicle, * translated if a translation table has been installed. * ww - cargo unit weight in 1/16 tons, same as cargo prop. 0F. * cccc - the cargo class value of the cargo transported by the vehicle. */ const CargoSpec *cs = CargoSpec::Get(v->cargo_type); /* Note: * For translating the cargo type we need to use the GRF which is resolving the variable, which * is object->ro.grffile. * In case of CBID_TRAIN_ALLOW_WAGON_ATTACH this is not the same as v->GetGRF(). */ return (cs->classes << 16) | (cs->weight << 8) | object->ro.grffile->cargo_map[v->cargo_type]; } case 0x48: return v->GetEngine()->flags; // Vehicle Type Info case 0x49: return v->build_year; case 0x4A: switch (v->type) { case VEH_TRAIN: { RailType rt = GetTileRailType(v->tile); return (HasPowerOnRail(Train::From(v)->railtype, rt) ? 0x100 : 0) | GetReverseRailTypeTranslation(rt, object->ro.grffile); } case VEH_ROAD: { RoadType rt = GetRoadType(v->tile, GetRoadTramType(RoadVehicle::From(v)->roadtype)); return 0x100 | GetReverseRoadTypeTranslation(rt, object->ro.grffile); } default: return 0; } case 0x4B: // Long date of last service return v->date_of_last_service; case 0x4C: // Current maximum speed in NewGRF units if (!v->IsPrimaryVehicle()) return 0; return v->GetCurrentMaxSpeed(); case 0x4D: // Position within articulated vehicle if (!HasBit(v->grf_cache.cache_valid, NCVV_POSITION_IN_VEHICLE)) { byte artic_before = 0; for (const Vehicle *u = v; u->IsArticulatedPart(); u = u->Previous()) artic_before++; byte artic_after = 0; for (const Vehicle *u = v; u->HasArticulatedPart(); u = u->Next()) artic_after++; v->grf_cache.position_in_vehicle = artic_before | artic_after << 8; SetBit(v->grf_cache.cache_valid, NCVV_POSITION_IN_VEHICLE); } return v->grf_cache.position_in_vehicle; /* Variables which use the parameter */ case 0x60: // Count consist's engine ID occurrence if (v->type != VEH_TRAIN) return v->GetEngine()->grf_prop.local_id == parameter ? 1 : 0; { uint count = 0; for (; v != nullptr; v = v->Next()) { if (v->GetEngine()->grf_prop.local_id == parameter) count++; } return count; } case 0x61: // Get variable of n-th vehicle in chain [signed number relative to vehicle] if (!v->IsGroundVehicle() || parameter == 0x61) { /* Not available */ break; } /* Only allow callbacks that don't change properties to avoid circular dependencies. */ if (object->ro.callback == CBID_NO_CALLBACK || object->ro.callback == CBID_RANDOM_TRIGGER || object->ro.callback == CBID_TRAIN_ALLOW_WAGON_ATTACH || object->ro.callback == CBID_VEHICLE_START_STOP_CHECK || object->ro.callback == CBID_VEHICLE_32DAY_CALLBACK || object->ro.callback == CBID_VEHICLE_COLOUR_MAPPING || object->ro.callback == CBID_VEHICLE_SPAWN_VISUAL_EFFECT) { Vehicle *u = v->Move((int32)GetRegister(0x10F)); if (u == nullptr) return 0; // available, but zero if (parameter == 0x5F) { /* This seems to be the only variable that makes sense to access via var 61, but is not handled by VehicleGetVariable */ return (u->random_bits << 8) | u->waiting_triggers; } else { return VehicleGetVariable(u, object, parameter, GetRegister(0x10E), available); } } /* Not available */ break; case 0x62: { // Curvature/position difference for n-th vehicle in chain [signed number relative to vehicle] /* Format: zzyyxxFD * zz - Signed difference of z position between the selected and this vehicle. * yy - Signed difference of y position between the selected and this vehicle. * xx - Signed difference of x position between the selected and this vehicle. * F - Flags, bit 7 corresponds to VS_HIDDEN. * D - Dir difference, like in 0x45. */ if (!v->IsGroundVehicle()) return 0; const Vehicle *u = v->Move((int8)parameter); if (u == nullptr) return 0; /* Get direction difference. */ bool prev = (int8)parameter < 0; uint32 ret = prev ? DirDifference(u->direction, v->direction) : DirDifference(v->direction, u->direction); if (ret > DIRDIFF_REVERSE) ret |= 0x08; if (u->vehstatus & VS_HIDDEN) ret |= 0x80; /* Get position difference. */ ret |= ((prev ? u->x_pos - v->x_pos : v->x_pos - u->x_pos) & 0xFF) << 8; ret |= ((prev ? u->y_pos - v->y_pos : v->y_pos - u->y_pos) & 0xFF) << 16; ret |= ((prev ? u->z_pos - v->z_pos : v->z_pos - u->z_pos) & 0xFF) << 24; return ret; } case 0xFE: case 0xFF: { uint16 modflags = 0; if (v->type == VEH_TRAIN) { const Train *t = Train::From(v); bool is_powered_wagon = HasBit(t->flags, VRF_POWEREDWAGON); const Train *u = is_powered_wagon ? t->First() : t; // for powered wagons the engine defines the type of engine (i.e. railtype) RailType railtype = GetRailType(v->tile); bool powered = t->IsEngine() || is_powered_wagon; bool has_power = HasPowerOnRail(u->railtype, railtype); if (powered && has_power) SetBit(modflags, 5); if (powered && !has_power) SetBit(modflags, 6); if (HasBit(t->flags, VRF_TOGGLE_REVERSE)) SetBit(modflags, 8); } if (HasBit(v->vehicle_flags, VF_CARGO_UNLOADING)) SetBit(modflags, 1); if (HasBit(v->vehicle_flags, VF_BUILT_AS_PROTOTYPE)) SetBit(modflags, 10); return variable == 0xFE ? modflags : GB(modflags, 8, 8); } } /* General vehicle properties */ switch (variable - 0x80) { case 0x00: return v->type + 0x10; case 0x01: return MapOldSubType(v); case 0x04: return v->index; case 0x05: return GB(v->index, 8, 8); case 0x0A: return v->current_order.MapOldOrder(); case 0x0B: return v->current_order.GetDestination(); case 0x0C: return v->GetNumOrders(); case 0x0D: return v->cur_real_order_index; case 0x10: case 0x11: { uint ticks; if (v->current_order.IsType(OT_LOADING)) { ticks = v->load_unload_ticks; } else { switch (v->type) { case VEH_TRAIN: ticks = Train::From(v)->wait_counter; break; case VEH_AIRCRAFT: ticks = Aircraft::From(v)->turn_counter; break; default: ticks = 0; break; } } return (variable - 0x80) == 0x10 ? ticks : GB(ticks, 8, 8); } case 0x12: return Clamp(v->date_of_last_service - DAYS_TILL_ORIGINAL_BASE_YEAR, 0, 0xFFFF); case 0x13: return GB(Clamp(v->date_of_last_service - DAYS_TILL_ORIGINAL_BASE_YEAR, 0, 0xFFFF), 8, 8); case 0x14: return v->GetServiceInterval(); case 0x15: return GB(v->GetServiceInterval(), 8, 8); case 0x16: return v->last_station_visited; case 0x17: return v->tick_counter; case 0x18: case 0x19: { uint max_speed; switch (v->type) { case VEH_AIRCRAFT: max_speed = Aircraft::From(v)->GetSpeedOldUnits(); // Convert to old units. break; default: max_speed = v->vcache.cached_max_speed; break; } return (variable - 0x80) == 0x18 ? max_speed : GB(max_speed, 8, 8); } case 0x1A: return v->x_pos; case 0x1B: return GB(v->x_pos, 8, 8); case 0x1C: return v->y_pos; case 0x1D: return GB(v->y_pos, 8, 8); case 0x1E: return v->z_pos; case 0x1F: return object->info_view ? DIR_W : v->direction; case 0x28: return 0; // cur_image is a potential desyncer due to Action1 in static NewGRFs. case 0x29: return 0; // cur_image is a potential desyncer due to Action1 in static NewGRFs. case 0x32: return v->vehstatus; case 0x33: return 0; // non-existent high byte of vehstatus case 0x34: return v->type == VEH_AIRCRAFT ? (v->cur_speed * 10) / 128 : v->cur_speed; case 0x35: return GB(v->type == VEH_AIRCRAFT ? (v->cur_speed * 10) / 128 : v->cur_speed, 8, 8); case 0x36: return v->subspeed; case 0x37: return v->acceleration; case 0x39: return v->cargo_type; case 0x3A: return v->cargo_cap; case 0x3B: return GB(v->cargo_cap, 8, 8); case 0x3C: return ClampToU16(v->cargo.StoredCount()); case 0x3D: return GB(ClampToU16(v->cargo.StoredCount()), 8, 8); case 0x3E: return v->cargo.Source(); case 0x3F: return ClampU(v->cargo.DaysInTransit(), 0, 0xFF); case 0x40: return ClampToU16(v->age); case 0x41: return GB(ClampToU16(v->age), 8, 8); case 0x42: return ClampToU16(v->max_age); case 0x43: return GB(ClampToU16(v->max_age), 8, 8); case 0x44: return Clamp(v->build_year, ORIGINAL_BASE_YEAR, ORIGINAL_MAX_YEAR) - ORIGINAL_BASE_YEAR; case 0x45: return v->unitnumber; case 0x46: return v->GetEngine()->grf_prop.local_id; case 0x47: return GB(v->GetEngine()->grf_prop.local_id, 8, 8); case 0x48: if (v->type != VEH_TRAIN || v->spritenum != 0xFD) return v->spritenum; return HasBit(Train::From(v)->flags, VRF_REVERSE_DIRECTION) ? 0xFE : 0xFD; case 0x49: return v->day_counter; case 0x4A: return v->breakdowns_since_last_service; case 0x4B: return v->breakdown_ctr; case 0x4C: return v->breakdown_delay; case 0x4D: return v->breakdown_chance; case 0x4E: return v->reliability; case 0x4F: return GB(v->reliability, 8, 8); case 0x50: return v->reliability_spd_dec; case 0x51: return GB(v->reliability_spd_dec, 8, 8); case 0x52: return ClampToI32(v->GetDisplayProfitThisYear()); case 0x53: return GB(ClampToI32(v->GetDisplayProfitThisYear()), 8, 24); case 0x54: return GB(ClampToI32(v->GetDisplayProfitThisYear()), 16, 16); case 0x55: return GB(ClampToI32(v->GetDisplayProfitThisYear()), 24, 8); case 0x56: return ClampToI32(v->GetDisplayProfitLastYear()); case 0x57: return GB(ClampToI32(v->GetDisplayProfitLastYear()), 8, 24); case 0x58: return GB(ClampToI32(v->GetDisplayProfitLastYear()), 16, 16); case 0x59: return GB(ClampToI32(v->GetDisplayProfitLastYear()), 24, 8); case 0x5A: return v->Next() == nullptr ? INVALID_VEHICLE : v->Next()->index; case 0x5C: return ClampToI32(v->value); case 0x5D: return GB(ClampToI32(v->value), 8, 24); case 0x5E: return GB(ClampToI32(v->value), 16, 16); case 0x5F: return GB(ClampToI32(v->value), 24, 8); case 0x72: return v->cargo_subtype; case 0x7A: return v->random_bits; case 0x7B: return v->waiting_triggers; } /* Vehicle specific properties */ switch (v->type) { case VEH_TRAIN: { Train *t = Train::From(v); switch (variable - 0x80) { case 0x62: return t->track; case 0x66: return t->railtype; case 0x73: return 0x80 + VEHICLE_LENGTH - t->gcache.cached_veh_length; case 0x74: return t->gcache.cached_power; case 0x75: return GB(t->gcache.cached_power, 8, 24); case 0x76: return GB(t->gcache.cached_power, 16, 16); case 0x77: return GB(t->gcache.cached_power, 24, 8); case 0x7C: return t->First()->index; case 0x7D: return GB(t->First()->index, 8, 8); case 0x7F: return 0; // Used for vehicle reversing hack in TTDP } break; } case VEH_ROAD: { RoadVehicle *rv = RoadVehicle::From(v); switch (variable - 0x80) { case 0x62: return rv->state; case 0x64: return rv->blocked_ctr; case 0x65: return GB(rv->blocked_ctr, 8, 8); case 0x66: return rv->overtaking; case 0x67: return rv->overtaking_ctr; case 0x68: return rv->crashed_ctr; case 0x69: return GB(rv->crashed_ctr, 8, 8); } break; } case VEH_SHIP: { Ship *s = Ship::From(v); switch (variable - 0x80) { case 0x62: return s->state; } break; } case VEH_AIRCRAFT: { Aircraft *a = Aircraft::From(v); switch (variable - 0x80) { case 0x62: return MapAircraftMovementState(a); // Current movement state case 0x63: return a->targetairport; // Airport to which the action refers case 0x66: return MapAircraftMovementAction(a); // Current movement action } break; } default: break; } DEBUG(grf, 1, "Unhandled vehicle variable 0x%X, type 0x%X", variable, (uint)v->type); *available = false; return UINT_MAX; } /* virtual */ uint32 VehicleScopeResolver::GetVariable(byte variable, uint32 parameter, bool *available) const { if (this->v == nullptr) { /* Vehicle does not exist, so we're in a purchase list */ switch (variable) { case 0x43: return GetCompanyInfo(_current_company, LiveryHelper(this->self_type, nullptr)); // Owner information case 0x46: return 0; // Motion counter case 0x47: { // Vehicle cargo info const Engine *e = Engine::Get(this->self_type); CargoID cargo_type = e->GetDefaultCargoType(); if (cargo_type != CT_INVALID) { const CargoSpec *cs = CargoSpec::Get(cargo_type); return (cs->classes << 16) | (cs->weight << 8) | this->ro.grffile->cargo_map[cargo_type]; } else { return 0x000000FF; } } case 0x48: return Engine::Get(this->self_type)->flags; // Vehicle Type Info case 0x49: return _cur_year; // 'Long' format build year case 0x4B: return _date; // Long date of last service case 0x92: return Clamp(_date - DAYS_TILL_ORIGINAL_BASE_YEAR, 0, 0xFFFF); // Date of last service case 0x93: return GB(Clamp(_date - DAYS_TILL_ORIGINAL_BASE_YEAR, 0, 0xFFFF), 8, 8); case 0xC4: return Clamp(_cur_year, ORIGINAL_BASE_YEAR, ORIGINAL_MAX_YEAR) - ORIGINAL_BASE_YEAR; // Build year case 0xDA: return INVALID_VEHICLE; // Next vehicle case 0xF2: return 0; // Cargo subtype } *available = false; return UINT_MAX; } return VehicleGetVariable(const_cast(this->v), this, variable, parameter, available); } /* virtual */ const SpriteGroup *VehicleResolverObject::ResolveReal(const RealSpriteGroup *group) const { const Vehicle *v = this->self_scope.v; if (v == nullptr) { if (group->num_loading > 0) return group->loading[0]; if (group->num_loaded > 0) return group->loaded[0]; return nullptr; } bool in_motion = !v->First()->current_order.IsType(OT_LOADING); uint totalsets = in_motion ? group->num_loaded : group->num_loading; if (totalsets == 0) return nullptr; uint set = (v->cargo.StoredCount() * totalsets) / max((uint16)1, v->cargo_cap); set = min(set, totalsets - 1); return in_motion ? group->loaded[set] : group->loading[set]; } /** * Get the grf file associated with an engine type. * @param engine_type Engine to query. * @return grf file associated with the engine. */ static const GRFFile *GetEngineGrfFile(EngineID engine_type) { const Engine *e = Engine::Get(engine_type); return (e != nullptr) ? e->GetGRF() : nullptr; } /** * Resolver of a vehicle (chain). * @param engine_type Engine type * @param v %Vehicle being resolved. * @param wagon_override Application of wagon overrides. * @param info_view Indicates if the item is being drawn in an info window. * @param callback Callback ID. * @param callback_param1 First parameter (var 10) of the callback. * @param callback_param2 Second parameter (var 18) of the callback. */ VehicleResolverObject::VehicleResolverObject(EngineID engine_type, const Vehicle *v, WagonOverride wagon_override, bool info_view, CallbackID callback, uint32 callback_param1, uint32 callback_param2) : ResolverObject(GetEngineGrfFile(engine_type), callback, callback_param1, callback_param2), self_scope(*this, engine_type, v, info_view), parent_scope(*this, engine_type, ((v != nullptr) ? v->First() : v), info_view), relative_scope(*this, engine_type, v, info_view), cached_relative_count(0) { if (wagon_override == WO_SELF) { this->root_spritegroup = GetWagonOverrideSpriteSet(engine_type, CT_DEFAULT, engine_type); } else { if (wagon_override != WO_NONE && v != nullptr && v->IsGroundVehicle()) { assert(v->engine_type == engine_type); // overrides make little sense with fake scopes /* For trains we always use cached value, except for callbacks because the override spriteset * to use may be different than the one cached. It happens for callback 0x15 (refit engine), * as v->cargo_type is temporary changed to the new type */ if (wagon_override == WO_CACHED && v->type == VEH_TRAIN) { this->root_spritegroup = Train::From(v)->tcache.cached_override; } else { this->root_spritegroup = GetWagonOverrideSpriteSet(v->engine_type, v->cargo_type, v->GetGroundVehicleCache()->first_engine); } } if (this->root_spritegroup == nullptr) { const Engine *e = Engine::Get(engine_type); CargoID cargo = v != nullptr ? v->cargo_type : CT_PURCHASE; assert(cargo < lengthof(e->grf_prop.spritegroup)); this->root_spritegroup = e->grf_prop.spritegroup[cargo] != nullptr ? e->grf_prop.spritegroup[cargo] : e->grf_prop.spritegroup[CT_DEFAULT]; } } } void GetCustomEngineSprite(EngineID engine, const Vehicle *v, Direction direction, EngineImageType image_type, VehicleSpriteSeq *result) { VehicleResolverObject object(engine, v, VehicleResolverObject::WO_CACHED, false, CBID_NO_CALLBACK); result->Clear(); bool sprite_stack = HasBit(EngInfo(engine)->misc_flags, EF_SPRITE_STACK); uint max_stack = sprite_stack ? lengthof(result->seq) : 1; for (uint stack = 0; stack < max_stack; ++stack) { object.ResetState(); object.callback_param1 = image_type | (stack << 8); const SpriteGroup *group = object.Resolve(); uint32 reg100 = sprite_stack ? GetRegister(0x100) : 0; if (group != nullptr && group->GetNumResults() != 0) { result->seq[result->count].sprite = group->GetResult() + (direction % group->GetNumResults()); result->seq[result->count].pal = GB(reg100, 0, 16); // zero means default recolouring result->count++; } if (!HasBit(reg100, 31)) break; } } void GetRotorOverrideSprite(EngineID engine, const struct Aircraft *v, bool info_view, EngineImageType image_type, VehicleSpriteSeq *result) { const Engine *e = Engine::Get(engine); /* Only valid for helicopters */ assert(e->type == VEH_AIRCRAFT); assert(!(e->u.air.subtype & AIR_CTOL)); VehicleResolverObject object(engine, v, VehicleResolverObject::WO_SELF, info_view, CBID_NO_CALLBACK); result->Clear(); uint rotor_pos = v == nullptr || info_view ? 0 : v->Next()->Next()->state; bool sprite_stack = HasBit(e->info.misc_flags, EF_SPRITE_STACK); uint max_stack = sprite_stack ? lengthof(result->seq) : 1; for (uint stack = 0; stack < max_stack; ++stack) { object.ResetState(); object.callback_param1 = image_type | (stack << 8); const SpriteGroup *group = object.Resolve(); uint32 reg100 = sprite_stack ? GetRegister(0x100) : 0; if (group != nullptr && group->GetNumResults() != 0) { result->seq[result->count].sprite = group->GetResult() + (rotor_pos % group->GetNumResults()); result->seq[result->count].pal = GB(reg100, 0, 16); // zero means default recolouring result->count++; } if (!HasBit(reg100, 31)) break; } } /** * Check if a wagon is currently using a wagon override * @param v The wagon to check * @return true if it is using an override, false otherwise */ bool UsesWagonOverride(const Vehicle *v) { assert(v->type == VEH_TRAIN); return Train::From(v)->tcache.cached_override != nullptr; } /** * Evaluate a newgrf callback for vehicles * @param callback The callback to evaluate * @param param1 First parameter of the callback * @param param2 Second parameter of the callback * @param engine Engine type of the vehicle to evaluate the callback for * @param v The vehicle to evaluate the callback for, or nullptr if it doesn't exist yet * @return The value the callback returned, or CALLBACK_FAILED if it failed */ uint16 GetVehicleCallback(CallbackID callback, uint32 param1, uint32 param2, EngineID engine, const Vehicle *v) { VehicleResolverObject object(engine, v, VehicleResolverObject::WO_UNCACHED, false, callback, param1, param2); return object.ResolveCallback(); } /** * Evaluate a newgrf callback for vehicles with a different vehicle for parent scope. * @param callback The callback to evaluate * @param param1 First parameter of the callback * @param param2 Second parameter of the callback * @param engine Engine type of the vehicle to evaluate the callback for * @param v The vehicle to evaluate the callback for, or nullptr if it doesn't exist yet * @param parent The vehicle to use for parent scope * @return The value the callback returned, or CALLBACK_FAILED if it failed */ uint16 GetVehicleCallbackParent(CallbackID callback, uint32 param1, uint32 param2, EngineID engine, const Vehicle *v, const Vehicle *parent) { VehicleResolverObject object(engine, v, VehicleResolverObject::WO_NONE, false, callback, param1, param2); object.parent_scope.SetVehicle(parent); return object.ResolveCallback(); } /* Callback 36 handlers */ uint GetVehicleProperty(const Vehicle *v, PropertyID property, uint orig_value) { return GetEngineProperty(v->engine_type, property, orig_value, v); } uint GetEngineProperty(EngineID engine, PropertyID property, uint orig_value, const Vehicle *v) { uint16 callback = GetVehicleCallback(CBID_VEHICLE_MODIFY_PROPERTY, property, 0, engine, v); if (callback != CALLBACK_FAILED) return callback; return orig_value; } static void DoTriggerVehicle(Vehicle *v, VehicleTrigger trigger, byte base_random_bits, bool first) { /* We can't trigger a non-existent vehicle... */ assert(v != nullptr); VehicleResolverObject object(v->engine_type, v, VehicleResolverObject::WO_CACHED, false, CBID_RANDOM_TRIGGER); object.waiting_triggers = v->waiting_triggers | trigger; v->waiting_triggers = object.waiting_triggers; // store now for var 5F const SpriteGroup *group = object.Resolve(); if (group == nullptr) return; /* Store remaining triggers. */ v->waiting_triggers = object.GetRemainingTriggers(); /* Rerandomise bits. Scopes other than SELF are invalid for rerandomisation. For bug-to-bug-compatibility with TTDP we ignore the scope. */ byte new_random_bits = Random(); uint32 reseed = object.GetReseedSum(); v->random_bits &= ~reseed; v->random_bits |= (first ? new_random_bits : base_random_bits) & reseed; switch (trigger) { case VEHICLE_TRIGGER_NEW_CARGO: /* All vehicles in chain get ANY_NEW_CARGO trigger now. * So we call it for the first one and they will recurse. * Indexing part of vehicle random bits needs to be * same for all triggered vehicles in the chain (to get * all the random-cargo wagons carry the same cargo, * i.e.), so we give them all the NEW_CARGO triggered * vehicle's portion of random bits. */ assert(first); DoTriggerVehicle(v->First(), VEHICLE_TRIGGER_ANY_NEW_CARGO, new_random_bits, false); break; case VEHICLE_TRIGGER_DEPOT: /* We now trigger the next vehicle in chain recursively. * The random bits portions may be different for each * vehicle in chain. */ if (v->Next() != nullptr) DoTriggerVehicle(v->Next(), trigger, 0, true); break; case VEHICLE_TRIGGER_EMPTY: /* We now trigger the next vehicle in chain * recursively. The random bits portions must be same * for each vehicle in chain, so we give them all * first chained vehicle's portion of random bits. */ if (v->Next() != nullptr) DoTriggerVehicle(v->Next(), trigger, first ? new_random_bits : base_random_bits, false); break; case VEHICLE_TRIGGER_ANY_NEW_CARGO: /* Now pass the trigger recursively to the next vehicle * in chain. */ assert(!first); if (v->Next() != nullptr) DoTriggerVehicle(v->Next(), VEHICLE_TRIGGER_ANY_NEW_CARGO, base_random_bits, false); break; case VEHICLE_TRIGGER_CALLBACK_32: /* Do not do any recursion */ break; } } void TriggerVehicle(Vehicle *v, VehicleTrigger trigger) { if (trigger == VEHICLE_TRIGGER_DEPOT) { /* store that the vehicle entered a depot this tick */ VehicleEnteredDepotThisTick(v); } v->InvalidateNewGRFCacheOfChain(); DoTriggerVehicle(v, trigger, 0, true); v->InvalidateNewGRFCacheOfChain(); } /* Functions for changing the order of vehicle purchase lists */ struct ListOrderChange { EngineID engine; uint target; ///< local ID }; static std::vector _list_order_changes; /** * Record a vehicle ListOrderChange. * @param engine Engine to move * @param target Local engine ID to move \a engine in front of * @note All sorting is done later in CommitVehicleListOrderChanges */ void AlterVehicleListOrder(EngineID engine, uint target) { /* Add the list order change to a queue */ _list_order_changes.push_back({engine, target}); } /** * Comparator function to sort engines via scope-GRFID and local ID. * @param a left side * @param b right side * @return comparison result */ static bool EnginePreSort(const EngineID &a, const EngineID &b) { const EngineIDMapping &id_a = _engine_mngr.at(a); const EngineIDMapping &id_b = _engine_mngr.at(b); /* 1. Sort by engine type */ if (id_a.type != id_b.type) return (int)id_a.type < (int)id_b.type; /* 2. Sort by scope-GRFID */ if (id_a.grfid != id_b.grfid) return id_a.grfid < id_b.grfid; /* 3. Sort by local ID */ return (int)id_a.internal_id < (int)id_b.internal_id; } /** * Deternine default engine sorting and execute recorded ListOrderChanges from AlterVehicleListOrder. */ void CommitVehicleListOrderChanges() { /* Pre-sort engines by scope-grfid and local index */ std::vector ordering; for (const Engine *e : Engine::Iterate()) { ordering.push_back(e->index); } std::sort(ordering.begin(), ordering.end(), EnginePreSort); /* Apply Insertion-Sort operations */ for (const ListOrderChange &it : _list_order_changes) { EngineID source = it.engine; uint local_target = it.target; const EngineIDMapping *id_source = _engine_mngr.data() + source; if (id_source->internal_id == local_target) continue; EngineID target = _engine_mngr.GetID(id_source->type, local_target, id_source->grfid); if (target == INVALID_ENGINE) continue; int source_index = find_index(ordering, source); int target_index = find_index(ordering, target); assert(source_index >= 0 && target_index >= 0); assert(source_index != target_index); EngineID *list = ordering.data(); if (source_index < target_index) { --target_index; for (int i = source_index; i < target_index; ++i) list[i] = list[i + 1]; list[target_index] = source; } else { for (int i = source_index; i > target_index; --i) list[i] = list[i - 1]; list[target_index] = source; } } /* Store final sort-order */ uint index = 0; for (const EngineID &eid : ordering) { Engine::Get(eid)->list_position = index; ++index; } /* Clear out the queue */ _list_order_changes.clear(); _list_order_changes.shrink_to_fit(); } /** * Fill the grf_cache of the given vehicle. * @param v The vehicle to fill the cache for. */ void FillNewGRFVehicleCache(const Vehicle *v) { VehicleResolverObject ro(v->engine_type, v, VehicleResolverObject::WO_NONE); /* These variables we have to check; these are the ones with a cache. */ static const int cache_entries[][2] = { { 0x40, NCVV_POSITION_CONSIST_LENGTH }, { 0x41, NCVV_POSITION_SAME_ID_LENGTH }, { 0x42, NCVV_CONSIST_CARGO_INFORMATION }, { 0x43, NCVV_COMPANY_INFORMATION }, { 0x4D, NCVV_POSITION_IN_VEHICLE }, }; assert_compile(NCVV_END == lengthof(cache_entries)); /* Resolve all the variables, so their caches are set. */ for (size_t i = 0; i < lengthof(cache_entries); i++) { /* Only resolve when the cache isn't valid. */ if (HasBit(v->grf_cache.cache_valid, cache_entries[i][1])) continue; bool stub; ro.GetScope(VSG_SCOPE_SELF)->GetVariable(cache_entries[i][0], 0, &stub); } /* Make sure really all bits are set. */ assert(v->grf_cache.cache_valid == (1 << NCVV_END) - 1); }