# newgrf_engine.h

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    00001 /* $Id$ */
    00002
    00003 /*
    00004  * This file is part of OpenTTD.
    00005  * 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.
    00006  * 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.
    00007  * 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/>.
    00008  */
    00009
    00012 #ifndef NEWGRF_ENGINE_H
    00013 #define NEWGRF_ENGINE_H
    00014
    00015 #include "direction_type.h"
    00016 #include "newgrf_callbacks.h"
    00017 #include "newgrf_properties.h"
    00018
    00019 enum {
    00020   TRAININFO_DEFAULT_VEHICLE_WIDTH = 29,
    00021   ROADVEHINFO_DEFAULT_VEHICLE_WIDTH = 28,
    00022   VEHICLEINFO_FULL_VEHICLE_WIDTH = 32,
    00023 };
    00024
    00025 void SetWagonOverrideSprites(EngineID engine, CargoID cargo, const struct SpriteGroup *group, EngineID *train_id, uint trains);
    00026 const SpriteGroup *GetWagonOverrideSpriteSet(EngineID engine, CargoID cargo, EngineID overriding_engine);
    00027 void SetCustomEngineSprites(EngineID engine, byte cargo, const struct SpriteGroup *group);
    00028 SpriteID GetCustomEngineSprite(EngineID engine, const Vehicle *v, Direction direction);
    00029 SpriteID GetRotorOverrideSprite(EngineID engine, const struct Aircraft *v, bool info_view);
    00030 #define GetCustomRotorSprite(v, i) GetRotorOverrideSprite(v->engine_type, v, i)
    00031 #define GetCustomRotorIcon(et) GetRotorOverrideSprite(et, NULL, true)
    00032
    00033 /* Forward declaration of GRFFile, to avoid unnecessary inclusion of newgrf.h
    00034  * elsewhere... */
    00035 struct GRFFile;
    00036
    00037 void SetEngineGRF(EngineID engine, const struct GRFFile *file);
    00038 const struct GRFFile *GetEngineGRF(EngineID engine);
    00039 uint32 GetEngineGRFID(EngineID engine);
    00040
    00041 uint16 GetVehicleCallback(CallbackID callback, uint32 param1, uint32 param2, EngineID engine, const Vehicle *v);
    00042 uint16 GetVehicleCallbackParent(CallbackID callback, uint32 param1, uint32 param2, EngineID engine, const Vehicle *v, const Vehicle *parent);
    00043 bool UsesWagonOverride(const Vehicle *v);
    00044 #define GetCustomVehicleSprite(v, direction) GetCustomEngineSprite(v->engine_type, v, direction)
    00045 #define GetCustomVehicleIcon(et, direction) GetCustomEngineSprite(et, NULL, direction)
    00046
    00047 /* Handler to Evaluate callback 36. If the callback fails (i.e. most of the
    00048  * time) orig_value is returned */
    00049 uint GetVehicleProperty(const Vehicle *v, PropertyID property, uint orig_value);
    00050 uint GetEngineProperty(EngineID engine, PropertyID property, uint orig_value);
    00051
    00052 enum VehicleTrigger {
    00053   VEHICLE_TRIGGER_NEW_CARGO     = 0x01,
    00054   /* Externally triggered only for the first vehicle in chain */
    00055   VEHICLE_TRIGGER_DEPOT         = 0x02,
    00056   /* Externally triggered only for the first vehicle in chain, only if whole chain is empty */
    00057   VEHICLE_TRIGGER_EMPTY         = 0x04,
    00058   /* Not triggered externally (called for the whole chain if we got NEW_CARGO) */
    00059   VEHICLE_TRIGGER_ANY_NEW_CARGO = 0x08,
    00060   /* Externally triggered for each vehicle in chain */
    00061   VEHICLE_TRIGGER_CALLBACK_32   = 0x10,
    00062 };
    00063 void TriggerVehicle(Vehicle *veh, VehicleTrigger trigger);
    00064
    00065 void UnloadWagonOverrides(Engine *e);
    00066
    00067 uint ListPositionOfEngine(EngineID engine);
    00068 void AlterVehicleListOrder(EngineID engine, EngineID target);
    00069 void CommitVehicleListOrderChanges();
    00070
    00071 EngineID GetNewEngineID(const GRFFile *file, VehicleType type, uint16 internal_id);
    00072
    00073 #endif /* NEWGRF_ENGINE_H */