#ifndef NEWGRF_HOUSE_H

#define NEWGRF_HOUSE_H

#include "town_type.h"

#include "newgrf_callbacks.h"

/**

 * Makes class IDs unique to each GRF file.

 * Houses can be assigned class IDs which are only comparable within the GRF

 * file they were defined in. This mapping ensures that if two houses have the

 * same class as defined by the GRF file, the classes are different within the

 */

struct HouseClassMapping {

	uint32 grfid;     ////< The GRF ID of the file this class belongs to

	uint8  class_id;  ////< The class id within the grf file

};

HouseClassID AllocateHouseClassID(byte grf_class_id, uint32 grfid);

void InitializeBuildingCounts();

void IncreaseBuildingCount(Town *t, HouseID house_id);

void DecreaseBuildingCount(Town *t, HouseID house_id);