/* $Id$ */ /* * 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 <http://www.gnu.org/licenses/>. */ /** @file newgrf_airport.cpp NewGRF handling of airports. */ #include "stdafx.h" #include "debug.h" #include "date_func.h" #include "newgrf.h" #include "newgrf_spritegroup.h" #include "newgrf_text.h" #include "station_base.h" #include "newgrf_class_func.h" /** * Reset airport classes to their default state. * This includes initialising the defaults classes with an empty * entry, for standard airports. */ template <typename Tspec, typename Tid, Tid Tmax> /* static */ void NewGRFClass<Tspec, Tid, Tmax>::InsertDefaults() { AirportClass::SetName(AirportClass::Allocate('SMAL'), STR_AIRPORT_CLASS_SMALL); AirportClass::SetName(AirportClass::Allocate('LARG'), STR_AIRPORT_CLASS_LARGE); AirportClass::SetName(AirportClass::Allocate('HUB_'), STR_AIRPORT_CLASS_HUB); AirportClass::SetName(AirportClass::Allocate('HELI'), STR_AIRPORT_CLASS_HELIPORTS); } INSTANTIATE_NEWGRF_CLASS_METHODS(AirportClass, AirportSpec, AirportClassID, APC_MAX) AirportOverrideManager _airport_mngr(NEW_AIRPORT_OFFSET, NUM_AIRPORTS, AT_INVALID); AirportSpec AirportSpec::specs[NUM_AIRPORTS]; ///< Airport specifications. /** * Retrieve airport spec for the given airport. If an override is available * it is returned. * @param type index of airport * @return A pointer to the corresponding AirportSpec */ /* static */ const AirportSpec *AirportSpec::Get(byte type) { assert(type < lengthof(AirportSpec::specs)); const AirportSpec *as = &AirportSpec::specs[type]; if (type >= NEW_AIRPORT_OFFSET && !as->enabled) { byte subst_id = _airport_mngr.GetSubstituteID(type); if (subst_id == AT_INVALID) return as; as = &AirportSpec::specs[subst_id]; } if (as->grf_prop.override != AT_INVALID) return &AirportSpec::specs[as->grf_prop.override]; return as; } /** * Retrieve airport spec for the given airport. Even if an override is * available the base spec is returned. * @param type index of airport * @return A pointer to the corresponding AirportSpec */ /* static */ AirportSpec *AirportSpec::GetWithoutOverride(byte type) { assert(type < lengthof(AirportSpec::specs)); return &AirportSpec::specs[type]; } /** Check whether this airport is available to build. */ bool AirportSpec::IsAvailable() const { if (!this->enabled) return false; if (_cur_year < this->min_year) return false; if (_settings_game.station.never_expire_airports) return true; return _cur_year <= this->max_year; } /** * This function initialize the airportspec array. */ void AirportSpec::ResetAirports() { extern const AirportSpec _origin_airport_specs[]; memset(&AirportSpec::specs, 0, sizeof(AirportSpec::specs)); memcpy(&AirportSpec::specs, &_origin_airport_specs, sizeof(AirportSpec) * NEW_AIRPORT_OFFSET); _airport_mngr.ResetOverride(); } /** * Tie all airportspecs to their class. */ void BindAirportSpecs() { for (int i = 0; i < NUM_AIRPORTS; i++) { AirportSpec *as = AirportSpec::GetWithoutOverride(i); if (as->enabled) AirportClass::Assign(as); } } void AirportOverrideManager::SetEntitySpec(AirportSpec *as) { byte airport_id = this->AddEntityID(as->grf_prop.local_id, as->grf_prop.grffile->grfid, as->grf_prop.subst_id); if (airport_id == invalid_ID) { grfmsg(1, "Airport.SetEntitySpec: Too many airports allocated. Ignoring."); return; } memcpy(AirportSpec::GetWithoutOverride(airport_id), as, sizeof(*as)); /* Now add the overrides. */ for (int i = 0; i < max_offset; i++) { AirportSpec *overridden_as = AirportSpec::GetWithoutOverride(i); if (entity_overrides[i] != as->grf_prop.local_id || grfid_overrides[i] != as->grf_prop.grffile->grfid) continue; overridden_as->grf_prop.override = airport_id; overridden_as->enabled = false; entity_overrides[i] = invalid_ID; grfid_overrides[i] = 0; } } uint32 AirportGetVariable(const ResolverObject *object, byte variable, byte parameter, bool *available) { const Station *st = object->u.airport.st; byte layout = object->u.airport.layout; if (object->scope == VSG_SCOPE_PARENT) { DEBUG(grf, 1, "Parent scope for airports unavailable"); *available = false; return UINT_MAX; } switch (variable) { case 0x40: return layout; } if (st == NULL) { *available = false; return UINT_MAX; } switch (variable) { /* Get a variable from the persistent storage */ case 0x7C: return st->airport.psa.Get(parameter); case 0xF0: return st->facilities; case 0xFA: return Clamp(st->build_date - DAYS_TILL_ORIGINAL_BASE_YEAR, 0, 65535); } return st->GetNewGRFVariable(object, variable, parameter, available); } static const SpriteGroup *AirportResolveReal(const ResolverObject *object, const RealSpriteGroup *group) { /* Airport action 2s should always have only 1 "loaded" state, but some * times things don't follow the spec... */ if (group->num_loaded > 0) return group->loaded[0]; if (group->num_loading > 0) return group->loading[0]; return NULL; } static uint32 AirportGetRandomBits(const ResolverObject *object) { const Station *st = object->u.airport.st; const TileIndex tile = object->u.airport.tile; return (st == NULL ? 0 : st->random_bits) | (tile == INVALID_TILE ? 0 : GetStationTileRandomBits(tile) << 16); } static uint32 AirportGetTriggers(const ResolverObject *object) { return 0; } static void AirportSetTriggers(const ResolverObject *object, int triggers) { } static void NewAirportResolver(ResolverObject *res, TileIndex tile, Station *st, byte airport_id, byte layout) { res->GetRandomBits = AirportGetRandomBits; res->GetTriggers = AirportGetTriggers; res->SetTriggers = AirportSetTriggers; res->GetVariable = AirportGetVariable; res->ResolveReal = AirportResolveReal; res->psa = st != NULL ? &st->airport.psa : NULL; res->u.airport.st = st; res->u.airport.airport_id = airport_id; res->u.airport.layout = layout; res->u.airport.tile = tile; res->callback = CBID_NO_CALLBACK; res->callback_param1 = 0; res->callback_param2 = 0; res->last_value = 0; res->trigger = 0; res->reseed = 0; res->count = 0; const AirportSpec *as = AirportSpec::Get(airport_id); res->grffile = as->grf_prop.grffile; } SpriteID GetCustomAirportSprite(const AirportSpec *as, byte layout) { const SpriteGroup *group; ResolverObject object; NewAirportResolver(&object, INVALID_TILE, NULL, as->GetIndex(), layout); group = SpriteGroup::Resolve(as->grf_prop.spritegroup[0], &object); if (group == NULL) return as->preview_sprite; return group->GetResult(); } uint16 GetAirportCallback(CallbackID callback, uint32 param1, uint32 param2, Station *st, TileIndex tile) { ResolverObject object; NewAirportResolver(&object, tile, st, st->airport.type, st->airport.layout); object.callback = callback; object.callback_param1 = param1; object.callback_param2 = param2; const SpriteGroup *group = SpriteGroup::Resolve(st->airport.GetSpec()->grf_prop.spritegroup[0], &object); if (group == NULL) return CALLBACK_FAILED; return group->GetCallbackResult(); } StringID GetAirportTextCallback(const AirportSpec *as, byte layout, uint16 callback) { const SpriteGroup *group; ResolverObject object; NewAirportResolver(&object, INVALID_TILE, NULL, as->GetIndex(), layout); object.callback = (CallbackID)callback; group = SpriteGroup::Resolve(as->grf_prop.spritegroup[0], &object); if (group == NULL) return STR_UNDEFINED; return GetGRFStringID(as->grf_prop.grffile->grfid, 0xD000 + group->GetResult()); }