maedhros@6332: /* $Id$ */
maedhros@6332: 
rubidium@9111: /** @file newgrf_house.h Functions related to NewGRF houses. */
maedhros@6332: 
maedhros@6332: #ifndef NEWGRF_HOUSE_H
maedhros@6332: #define NEWGRF_HOUSE_H
maedhros@6332: 
rubidium@8213: #include "town_type.h"
rubidium@7327: #include "newgrf_callbacks.h"
maedhros@6332: 
maedhros@6332: /**
maedhros@6332:  * Makes class IDs unique to each GRF file.
maedhros@6332:  * Houses can be assigned class IDs which are only comparable within the GRF
maedhros@6332:  * file they were defined in. This mapping ensures that if two houses have the
maedhros@6332:  * same class as defined by the GRF file, the classes are different within the
maedhros@6332:  * game. An array of HouseClassMapping structs is created, and the array index
maedhros@6332:  * of the struct that matches both the GRF ID and the class ID is the class ID
maedhros@6332:  * used in the game.
maedhros@6332:  *
maedhros@6332:  * Although similar to the HouseIDMapping struct above, this serves a different
maedhros@6332:  * purpose. Since the class ID is not saved anywhere, this mapping does not
maedhros@6332:  * need to be persistent; it just needs to keep class ids unique.
maedhros@6332:  */
maedhros@6332: struct HouseClassMapping {
maedhros@6332: 	uint32 grfid;     ////< The GRF ID of the file this class belongs to
maedhros@6332: 	uint8  class_id;  ////< The class id within the grf file
maedhros@6332: };
maedhros@6332: 
skidd13@8707: void UpdateHousesAndTowns();
maedhros@6332: 
maedhros@6332: HouseClassID AllocateHouseClassID(byte grf_class_id, uint32 grfid);
maedhros@6332: 
maedhros@6332: void InitializeBuildingCounts();
maedhros@6332: void IncreaseBuildingCount(Town *t, HouseID house_id);
maedhros@6332: void DecreaseBuildingCount(Town *t, HouseID house_id);
maedhros@6332: 
maedhros@6332: void DrawNewHouseTile(TileInfo *ti, HouseID house_id);
maedhros@6332: void AnimateNewHouseTile(TileIndex tile);
rubidium@9018: void ChangeHouseAnimationFrame(const struct GRFFile *file, TileIndex tile, uint16 callback_result);
maedhros@6332: 
rubidium@7327: uint16 GetHouseCallback(CallbackID callback, uint32 param1, uint32 param2, HouseID house_id, Town *town, TileIndex tile);
maedhros@6332: 
maedhros@6332: bool CanDeleteHouse(TileIndex tile);
maedhros@6332: 
maedhros@6332: bool NewHouseTileLoop(TileIndex tile);
maedhros@6332: 
rubidium@7861: enum HouseTrigger {
rubidium@7861: 	/* The tile of the house has been triggered during the tileloop. */
rubidium@7861: 	HOUSE_TRIGGER_TILE_LOOP     = 0x01,
rubidium@7861: 	/*
rubidium@7861: 	 * The top tile of a (multitile) building has been triggered during and all
rubidium@7861: 	 * the tileloop other tiles of the same building get the same random value.
rubidium@7861: 	 */
rubidium@7861: 	HOUSE_TRIGGER_TILE_LOOP_TOP = 0x02,
rubidium@7861: };
rubidium@7861: void TriggerHouse(TileIndex t, HouseTrigger trigger);
rubidium@7861: 
maedhros@6332: #endif /* NEWGRF_HOUSE_H */