127 lines
5.9 KiB
C
127 lines
5.9 KiB
C
/*
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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_engine.h Functions for NewGRF engines. */
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#ifndef NEWGRF_ENGINE_H
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#define NEWGRF_ENGINE_H
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#include "direction_type.h"
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#include "newgrf_callbacks.h"
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#include "newgrf_properties.h"
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#include "vehicle_type.h"
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#include "engine_type.h"
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#include "gfx_type.h"
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#include "newgrf_spritegroup.h"
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/** Resolver for a vehicle scope. */
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struct VehicleScopeResolver : public ScopeResolver {
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const struct Vehicle *v; ///< The vehicle being resolved.
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EngineID self_type; ///< Type of the vehicle.
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bool rotor_in_gui; ///< Helicopter rotor is drawn in GUI.
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/**
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* Scope resolver of a single vehicle.
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* @param ro Surrounding resolver.
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* @param engine_type Engine type
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* @param v %Vehicle being resolved.
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* @param rotor_in_gui Helicopter rotor is drawn in GUI.
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*/
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VehicleScopeResolver(ResolverObject &ro, EngineID engine_type, const Vehicle *v, bool rotor_in_gui)
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: ScopeResolver(ro), v(v), self_type(engine_type), rotor_in_gui(rotor_in_gui)
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{
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}
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void SetVehicle(const Vehicle *v) { this->v = v; }
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uint32 GetRandomBits() const override;
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uint32 GetVariable(uint16 variable, uint32 parameter, GetVariableExtra *extra) const override;
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uint32 GetTriggers() const override;
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};
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/** Resolver for a vehicle (chain) */
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struct VehicleResolverObject : public ResolverObject {
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/** Application of 'wagon overrides'. */
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enum WagonOverride {
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WO_NONE, //!< Resolve no wagon overrides.
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WO_UNCACHED, //!< Resolve wagon overrides.
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WO_CACHED, //!< Resolve wagon overrides using TrainCache::cached_override.
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WO_SELF, //!< Resolve self-override (helicopter rotors and such).
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};
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VehicleScopeResolver self_scope; ///< Scope resolver for the indicated vehicle.
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VehicleScopeResolver parent_scope; ///< Scope resolver for its parent vehicle.
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VehicleScopeResolver relative_scope; ///< Scope resolver for an other vehicle in the chain.
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VarSpriteGroupScopeOffset cached_relative_count; ///< Relative position of the other vehicle.
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VehicleResolverObject(EngineID engine_type, const Vehicle *v, WagonOverride wagon_override, bool rotor_in_gui = false,
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CallbackID callback = CBID_NO_CALLBACK, uint32 callback_param1 = 0, uint32 callback_param2 = 0);
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ScopeResolver *GetScope(VarSpriteGroupScope scope = VSG_SCOPE_SELF, VarSpriteGroupScopeOffset relative = 0) override;
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const SpriteGroup *ResolveReal(const RealSpriteGroup *group) const override;
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GrfSpecFeature GetFeature() const override;
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uint32 GetDebugID() const override;
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};
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static const uint TRAININFO_DEFAULT_VEHICLE_WIDTH = 29;
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static const uint ROADVEHINFO_DEFAULT_VEHICLE_WIDTH = 32;
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static const uint VEHICLEINFO_FULL_VEHICLE_WIDTH = 32;
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struct VehicleSpriteSeq;
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void SetWagonOverrideSprites(EngineID engine, CargoID cargo, const struct SpriteGroup *group, EngineID *train_id, uint trains);
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const SpriteGroup *GetWagonOverrideSpriteSet(EngineID engine, CargoID cargo, EngineID overriding_engine);
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void SetCustomEngineSprites(EngineID engine, byte cargo, const struct SpriteGroup *group);
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void GetCustomEngineSprite(EngineID engine, const Vehicle *v, Direction direction, EngineImageType image_type, VehicleSpriteSeq *result);
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#define GetCustomVehicleSprite(v, direction, image_type, result) GetCustomEngineSprite(v->engine_type, v, direction, image_type, result)
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#define GetCustomVehicleIcon(et, direction, image_type, result) GetCustomEngineSprite(et, nullptr, direction, image_type, result)
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void GetRotorOverrideSprite(EngineID engine, const struct Aircraft *v, EngineImageType image_type, VehicleSpriteSeq *result);
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#define GetCustomRotorSprite(v, image_type, result) GetRotorOverrideSprite(v->engine_type, v, image_type, result)
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#define GetCustomRotorIcon(et, image_type, result) GetRotorOverrideSprite(et, nullptr, image_type, result)
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/* Forward declaration of GRFFile, to avoid unnecessary inclusion of newgrf.h
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* elsewhere... */
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struct GRFFile;
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void SetEngineGRF(EngineID engine, const struct GRFFile *file);
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uint16 GetVehicleCallback(CallbackID callback, uint32 param1, uint32 param2, EngineID engine, const Vehicle *v);
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uint16 GetVehicleCallbackParent(CallbackID callback, uint32 param1, uint32 param2, EngineID engine, const Vehicle *v, const Vehicle *parent);
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bool UsesWagonOverride(const Vehicle *v);
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/* Handler to Evaluate callback 36. If the callback fails (i.e. most of the
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* time) orig_value is returned */
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int GetVehicleProperty(const Vehicle *v, PropertyID property, int orig_value, bool is_signed = false);
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int GetEngineProperty(EngineID engine, PropertyID property, int orig_value, const Vehicle *v = nullptr, bool is_signed = false);
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enum VehicleTrigger {
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VEHICLE_TRIGGER_NEW_CARGO = 0x01,
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/* Externally triggered only for the first vehicle in chain */
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VEHICLE_TRIGGER_DEPOT = 0x02,
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/* Externally triggered only for the first vehicle in chain, only if whole chain is empty */
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VEHICLE_TRIGGER_EMPTY = 0x04,
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/* Not triggered externally (called for the whole chain if we got NEW_CARGO) */
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VEHICLE_TRIGGER_ANY_NEW_CARGO = 0x08,
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/* Externally triggered for each vehicle in chain */
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VEHICLE_TRIGGER_CALLBACK_32 = 0x10,
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};
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void TriggerVehicle(Vehicle *veh, VehicleTrigger trigger);
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void AlterVehicleListOrder(EngineID engine, uint target);
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void CommitVehicleListOrderChanges();
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EngineID GetNewEngineID(const GRFFile *file, VehicleType type, uint16 internal_id);
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void FillNewGRFVehicleCache(const Vehicle *v);
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#endif /* NEWGRF_ENGINE_H */
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