OpenTTD Source  20241121-master-g67a0fccfad
newgrf_engine.h
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1 /*
2  * This file is part of OpenTTD.
3  * 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.
4  * 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.
5  * 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/>.
6  */
7 
10 #ifndef NEWGRF_ENGINE_H
11 #define NEWGRF_ENGINE_H
12 
13 #include "direction_type.h"
14 #include "newgrf_callbacks.h"
15 #include "newgrf_properties.h"
16 #include "vehicle_type.h"
17 #include "engine_type.h"
18 #include "gfx_type.h"
19 #include "newgrf_spritegroup.h"
20 
23  const struct Vehicle *v;
25  bool rotor_in_gui;
26 
36  {
37  }
38 
39  void SetVehicle(const Vehicle *v) { this->v = v; }
40 
41  uint32_t GetRandomBits() const override;
42  uint32_t GetVariable(uint8_t variable, [[maybe_unused]] uint32_t parameter, bool &available) const override;
43  uint32_t GetTriggers() const override;
44 };
45 
54  };
55 
58 
61 
62  VehicleResolverObject(EngineID engine_type, const Vehicle *v, WagonOverride wagon_override, bool rotor_in_gui = false,
64 
65  ScopeResolver *GetScope(VarSpriteGroupScope scope = VSG_SCOPE_SELF, uint8_t relative = 0) override;
66 
67  const SpriteGroup *ResolveReal(const RealSpriteGroup *group) const override;
68 
69  GrfSpecFeature GetFeature() const override;
70  uint32_t GetDebugID() const override;
71 };
72 
73 static const uint TRAININFO_DEFAULT_VEHICLE_WIDTH = 29;
74 static const uint ROADVEHINFO_DEFAULT_VEHICLE_WIDTH = 32;
75 static const uint VEHICLEINFO_FULL_VEHICLE_WIDTH = 32;
76 
77 struct VehicleSpriteSeq;
78 
79 void SetWagonOverrideSprites(EngineID engine, CargoID cargo, const struct SpriteGroup *group, std::span<EngineID> engine_ids);
80 const SpriteGroup *GetWagonOverrideSpriteSet(EngineID engine, CargoID cargo, EngineID overriding_engine);
81 void SetCustomEngineSprites(EngineID engine, uint8_t cargo, const struct SpriteGroup *group);
82 
83 void GetCustomEngineSprite(EngineID engine, const Vehicle *v, Direction direction, EngineImageType image_type, VehicleSpriteSeq *result);
84 #define GetCustomVehicleSprite(v, direction, image_type, result) GetCustomEngineSprite(v->engine_type, v, direction, image_type, result)
85 #define GetCustomVehicleIcon(et, direction, image_type, result) GetCustomEngineSprite(et, nullptr, direction, image_type, result)
86 
87 void GetRotorOverrideSprite(EngineID engine, const struct Aircraft *v, EngineImageType image_type, VehicleSpriteSeq *result);
88 #define GetCustomRotorSprite(v, image_type, result) GetRotorOverrideSprite(v->engine_type, v, image_type, result)
89 #define GetCustomRotorIcon(et, image_type, result) GetRotorOverrideSprite(et, nullptr, image_type, result)
90 
91 /* Forward declaration of GRFFile, to avoid unnecessary inclusion of newgrf.h
92  * elsewhere... */
93 struct GRFFile;
94 
95 void SetEngineGRF(EngineID engine, const struct GRFFile *file);
96 
97 uint16_t GetVehicleCallback(CallbackID callback, uint32_t param1, uint32_t param2, EngineID engine, const Vehicle *v);
98 uint16_t GetVehicleCallbackParent(CallbackID callback, uint32_t param1, uint32_t param2, EngineID engine, const Vehicle *v, const Vehicle *parent);
99 bool UsesWagonOverride(const Vehicle *v);
100 
101 /* Handler to Evaluate callback 36. If the callback fails (i.e. most of the
102  * time) orig_value is returned */
103 int GetVehicleProperty(const Vehicle *v, PropertyID property, int orig_value, bool is_signed = false);
104 int GetEngineProperty(EngineID engine, PropertyID property, int orig_value, const Vehicle *v = nullptr, bool is_signed = false);
105 
106 enum class BuildProbabilityType {
107  Reversed = 0,
108 };
109 
110 bool TestVehicleBuildProbability(Vehicle *v, EngineID engine, BuildProbabilityType type);
111 
112 enum VehicleTrigger {
113  VEHICLE_TRIGGER_NEW_CARGO = 0x01,
114  /* Externally triggered only for the first vehicle in chain */
115  VEHICLE_TRIGGER_DEPOT = 0x02,
116  /* Externally triggered only for the first vehicle in chain, only if whole chain is empty */
117  VEHICLE_TRIGGER_EMPTY = 0x04,
118  /* Not triggered externally (called for the whole chain if we got NEW_CARGO) */
119  VEHICLE_TRIGGER_ANY_NEW_CARGO = 0x08,
120  /* Externally triggered for each vehicle in chain */
121  VEHICLE_TRIGGER_CALLBACK_32 = 0x10,
122 };
123 void TriggerVehicle(Vehicle *veh, VehicleTrigger trigger);
124 
125 void AlterVehicleListOrder(EngineID engine, uint target);
127 
128 EngineID GetNewEngineID(const GRFFile *file, VehicleType type, uint16_t internal_id);
129 
130 void FillNewGRFVehicleCache(const Vehicle *v);
131 
132 #endif /* NEWGRF_ENGINE_H */
uint8_t CargoID
Cargo slots to indicate a cargo type within a game.
Definition: cargo_type.h:22
Different types to 'show' directions.
Direction
Defines the 8 directions on the map.
Types related to engines.
uint16_t EngineID
Unique identification number of an engine.
Definition: engine_type.h:21
Types related to the graphics and/or input devices.
GrfSpecFeature
Definition: newgrf.h:67
Callbacks that NewGRFs could implement.
CallbackID
List of implemented NewGRF callbacks.
@ CBID_NO_CALLBACK
Set when using the callback resolve system, but not to resolve a callback.
void SetEngineGRF(EngineID engine, const GRFFile *file)
Tie a GRFFile entry to an engine, to allow us to retrieve GRF parameters etc during a game.
void FillNewGRFVehicleCache(const Vehicle *v)
Fill the grf_cache of the given vehicle.
void AlterVehicleListOrder(EngineID engine, uint target)
Record a vehicle ListOrderChange.
uint16_t GetVehicleCallbackParent(CallbackID callback, uint32_t param1, uint32_t param2, EngineID engine, const Vehicle *v, const Vehicle *parent)
Evaluate a newgrf callback for vehicles with a different vehicle for parent scope.
bool UsesWagonOverride(const Vehicle *v)
Check if a wagon is currently using a wagon override.
EngineID GetNewEngineID(const GRFFile *file, VehicleType type, uint16_t internal_id)
Return the ID of a new engine.
Definition: newgrf.cpp:704
bool TestVehicleBuildProbability(Vehicle *v, EngineID engine, BuildProbabilityType type)
Test for vehicle build probablity type.
uint16_t GetVehicleCallback(CallbackID callback, uint32_t param1, uint32_t param2, EngineID engine, const Vehicle *v)
Evaluate a newgrf callback for vehicles.
void CommitVehicleListOrderChanges()
Deternine default engine sorting and execute recorded ListOrderChanges from AlterVehicleListOrder.
Properties of NewGRF Action 0.
PropertyID
List of NewGRF properties used in Action 0 or Callback 0x36 (CBID_VEHICLE_MODIFY_PROPERTY).
Action 2 handling.
VarSpriteGroupScope
@ VSG_SCOPE_SELF
Resolved object itself.
Aircraft, helicopters, rotors and their shadows belong to this class.
Definition: aircraft.h:72
Dynamic data of a loaded NewGRF.
Definition: newgrf.h:108
Interface for SpriteGroup-s to access the gamestate.
uint32_t callback_param2
Second parameter (var 18) of the callback.
CallbackID callback
Callback being resolved.
uint32_t callback_param1
First parameter (var 10) of the callback.
Interface to query and set values specific to a single VarSpriteGroupScope (action 2 scope).
ResolverObject & ro
Surrounding resolver object.
Resolver for a vehicle (chain)
Definition: newgrf_engine.h:47
VehicleScopeResolver self_scope
Scope resolver for the indicated vehicle.
Definition: newgrf_engine.h:56
ScopeResolver * GetScope(VarSpriteGroupScope scope=VSG_SCOPE_SELF, uint8_t relative=0) override
Get a resolver for the scope.
const SpriteGroup * ResolveReal(const RealSpriteGroup *group) const override
Get the real sprites of the grf.
VehicleScopeResolver parent_scope
Scope resolver for its parent vehicle.
Definition: newgrf_engine.h:57
GrfSpecFeature GetFeature() const override
Get the feature number being resolved for.
VehicleResolverObject(EngineID engine_type, const Vehicle *v, WagonOverride wagon_override, bool rotor_in_gui=false, CallbackID callback=CBID_NO_CALLBACK, uint32_t callback_param1=0, uint32_t callback_param2=0)
Resolver of a vehicle (chain).
VehicleScopeResolver relative_scope
Scope resolver for an other vehicle in the chain.
Definition: newgrf_engine.h:59
@ WO_NONE
Resolve no wagon overrides.
Definition: newgrf_engine.h:50
@ WO_SELF
Resolve self-override (helicopter rotors and such).
Definition: newgrf_engine.h:53
@ WO_UNCACHED
Resolve wagon overrides.
Definition: newgrf_engine.h:51
@ WO_CACHED
Resolve wagon overrides using TrainCache::cached_override.
Definition: newgrf_engine.h:52
uint32_t GetDebugID() const override
Get an identifier for the item being resolved.
uint8_t cached_relative_count
Relative position of the other vehicle.
Definition: newgrf_engine.h:60
Resolver for a vehicle scope.
Definition: newgrf_engine.h:22
bool rotor_in_gui
Helicopter rotor is drawn in GUI.
Definition: newgrf_engine.h:25
uint32_t GetTriggers() const override
Get the triggers.
const struct Vehicle * v
The vehicle being resolved.
Definition: newgrf_engine.h:23
EngineID self_type
Type of the vehicle.
Definition: newgrf_engine.h:24
uint32_t GetVariable(uint8_t variable, [[maybe_unused]] uint32_t parameter, bool &available) const override
Get a variable value.
VehicleScopeResolver(ResolverObject &ro, EngineID engine_type, const Vehicle *v, bool rotor_in_gui)
Scope resolver of a single vehicle.
Definition: newgrf_engine.h:34
uint32_t GetRandomBits() const override
Get a few random bits.
Sprite sequence for a vehicle part.
Definition: vehicle_base.h:135
Vehicle data structure.
Definition: vehicle_base.h:244
EngineID engine_type
The type of engine used for this vehicle.
Definition: vehicle_base.h:323
Types related to vehicles.
EngineImageType
Visualisation contexts of vehicles and engines.
Definition: vehicle_type.h:78
VehicleType
Available vehicle types.
Definition: vehicle_type.h:21