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