OpenTTD Source  20241108-master-g80f628063a
newgrf_house.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_HOUSE_H
11 #define NEWGRF_HOUSE_H
12 
13 #include "newgrf_callbacks.h"
14 #include "tile_cmd.h"
15 #include "house_type.h"
16 #include "newgrf_spritegroup.h"
17 #include "newgrf_town.h"
18 
27  int view;
28 
43  {
44  }
45 
46  uint32_t GetRandomBits() const override;
47  uint32_t GetVariable(uint8_t variable, [[maybe_unused]] uint32_t parameter, bool &available) const override;
48  uint32_t GetTriggers() const override;
49 };
50 
53  HouseScopeResolver house_scope;
54  TownScopeResolver town_scope;
55 
56  HouseResolverObject(HouseID house_id, TileIndex tile, Town *town,
57  CallbackID callback = CBID_NO_CALLBACK, uint32_t param1 = 0, uint32_t param2 = 0,
58  bool not_yet_constructed = false, uint8_t initial_random_bits = 0, CargoTypes watched_cargo_triggers = 0, int view = 0);
59 
60  ScopeResolver *GetScope(VarSpriteGroupScope scope = VSG_SCOPE_SELF, uint8_t relative = 0) override
61  {
62  switch (scope) {
63  case VSG_SCOPE_SELF: return &this->house_scope;
64  case VSG_SCOPE_PARENT: return &this->town_scope;
65  default: return ResolverObject::GetScope(scope, relative);
66  }
67  }
68 
69  GrfSpecFeature GetFeature() const override;
70  uint32_t GetDebugID() const override;
71 };
72 
87  uint32_t grfid;
88  uint8_t class_id;
89 };
90 
91 void ResetHouseClassIDs();
92 HouseClassID AllocateHouseClassID(uint8_t grf_class_id, uint32_t grfid);
93 
96 void IncreaseBuildingCount(Town *t, HouseID house_id);
97 void DecreaseBuildingCount(Town *t, HouseID house_id);
98 std::span<const uint> GetBuildingHouseIDCounts();
99 
100 void DrawNewHouseTile(TileInfo *ti, HouseID house_id);
101 void AnimateNewHouseTile(TileIndex tile);
102 void AnimateNewHouseConstruction(TileIndex tile);
103 
104 uint16_t GetHouseCallback(CallbackID callback, uint32_t param1, uint32_t param2, HouseID house_id, Town *town, TileIndex tile,
105  bool not_yet_constructed = false, uint8_t initial_random_bits = 0, CargoTypes watched_cargo_triggers = 0, int view = 0);
106 void WatchedCargoCallback(TileIndex tile, CargoTypes trigger_cargoes);
107 
108 bool CanDeleteHouse(TileIndex tile);
109 
110 bool NewHouseTileLoop(TileIndex tile);
111 
112 enum HouseTrigger {
113  /* The tile of the house has been triggered during the tileloop. */
114  HOUSE_TRIGGER_TILE_LOOP = 0x01,
115  /*
116  * The top tile of a (multitile) building has been triggered during and all
117  * the tileloop other tiles of the same building get the same random value.
118  */
119  HOUSE_TRIGGER_TILE_LOOP_TOP = 0x02,
120 };
121 void TriggerHouse(TileIndex t, HouseTrigger trigger);
122 
123 #endif /* NEWGRF_HOUSE_H */
declaration of basic house types and enums
uint16_t HouseClassID
Classes of houses.
Definition: house_type.h:14
uint16_t HouseID
OpenTTD ID of house types.
Definition: house_type.h:13
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 DecreaseBuildingCount(Town *t, HouseID house_id)
DecreaseBuildingCount() Decrease the number of a building when it is deleted.
void IncreaseBuildingCount(Town *t, HouseID house_id)
IncreaseBuildingCount() Increase the count of a building when it has been added by a town.
void WatchedCargoCallback(TileIndex tile, CargoTypes trigger_cargoes)
Run watched cargo accepted callback for a house.
std::span< const uint > GetBuildingHouseIDCounts()
Get read-only span of total HouseID building counts.
void InitializeBuildingCounts()
Initialise global building counts and all town building counts.
Action 2 handling.
VarSpriteGroupScope
@ VSG_SCOPE_SELF
Resolved object itself.
@ VSG_SCOPE_PARENT
Related object of the resolved one.
Functions to handle the town part of NewGRF towns.
Makes class IDs unique to each GRF file.
Definition: newgrf_house.h:86
uint8_t class_id
The class id within the grf file.
Definition: newgrf_house.h:88
uint32_t grfid
The GRF ID of the file this class belongs to.
Definition: newgrf_house.h:87
Resolver object to be used for houses (feature 07 spritegroups).
Definition: newgrf_house.h:52
HouseResolverObject(HouseID house_id, TileIndex tile, Town *town, CallbackID callback=CBID_NO_CALLBACK, uint32_t param1=0, uint32_t param2=0, bool not_yet_constructed=false, uint8_t initial_random_bits=0, CargoTypes watched_cargo_triggers=0, int view=0)
Construct a resolver for a house.
ScopeResolver * GetScope(VarSpriteGroupScope scope=VSG_SCOPE_SELF, uint8_t relative=0) override
Get a resolver for the scope.
Definition: newgrf_house.h:60
uint32_t GetDebugID() const override
Get an identifier for the item being resolved.
GrfSpecFeature GetFeature() const override
Get the feature number being resolved for.
Scope resolver for houses.
Definition: newgrf_house.h:20
int view
View when house does yet exist.
Definition: newgrf_house.h:27
Town * town
Town of this house.
Definition: newgrf_house.h:23
TileIndex tile
Tile of this house.
Definition: newgrf_house.h:22
CargoTypes watched_cargo_triggers
Cargo types that triggered the watched cargo callback.
Definition: newgrf_house.h:26
HouseScopeResolver(ResolverObject &ro, HouseID house_id, TileIndex tile, Town *town, bool not_yet_constructed, uint8_t initial_random_bits, CargoTypes watched_cargo_triggers, int view)
Constructor of a house scope resolver.
Definition: newgrf_house.h:39
uint16_t initial_random_bits
Random bits during construction checks.
Definition: newgrf_house.h:25
uint32_t GetRandomBits() const override
Get a few random bits.
HouseID house_id
Type of house being queried.
Definition: newgrf_house.h:21
uint32_t GetTriggers() const override
Get the triggers.
bool not_yet_constructed
True for construction check.
Definition: newgrf_house.h:24
uint32_t GetVariable(uint8_t variable, [[maybe_unused]] uint32_t parameter, bool &available) const override
Interface for SpriteGroup-s to access the gamestate.
CallbackID callback
Callback being resolved.
virtual ScopeResolver * GetScope(VarSpriteGroupScope scope=VSG_SCOPE_SELF, uint8_t relative=0)
Get a resolver for the scope.
Interface to query and set values specific to a single VarSpriteGroupScope (action 2 scope).
ResolverObject & ro
Surrounding resolver object.
Tile information, used while rendering the tile.
Definition: tile_cmd.h:43
Scope resolver for a town.
Definition: newgrf_town.h:22
Town data structure.
Definition: town.h:54
Generic 'commands' that can be performed on all tiles.