1

/* $Id$ */

     2

     3

/** @file newgrf_house.h */

     4

     5

#ifndef NEWGRF_HOUSE_H

     6

#define NEWGRF_HOUSE_H

     7

     8

#include "town.h"

     9

#include "newgrf_callbacks.h"

    10

    11

/**

    12

 * Makes class IDs unique to each GRF file.

    13

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

    14

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

    15

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

    16

 * game. An array of HouseClassMapping structs is created, and the array index

    17

 * of the struct that matches both the GRF ID and the class ID is the class ID

    18

 * used in the game.

    19

 *

    20

 * Although similar to the HouseIDMapping struct above, this serves a different

    21

 * purpose. Since the class ID is not saved anywhere, this mapping does not

    22

 * need to be persistent; it just needs to keep class ids unique.

    23

 */

    24

struct HouseClassMapping {

    25

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

    26

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

    27

};

    28

    29

void CheckHouseIDs();

    30

    31

HouseClassID AllocateHouseClassID(byte grf_class_id, uint32 grfid);

    32

    33

void InitializeBuildingCounts();

    34

void IncreaseBuildingCount(Town *t, HouseID house_id);

    35

void DecreaseBuildingCount(Town *t, HouseID house_id);

    36

void AfterLoadCountBuildings();

    37

    38

void DrawNewHouseTile(TileInfo *ti, HouseID house_id);

    39

void AnimateNewHouseTile(TileIndex tile);

    40

void ChangeHouseAnimationFrame(TileIndex tile, uint16 callback_result);

    41

    42

uint16 GetHouseCallback(CallbackID callback, uint32 param1, uint32 param2, HouseID house_id, Town *town, TileIndex tile);

    43

    44

bool CanDeleteHouse(TileIndex tile);

    45

    46

bool NewHouseTileLoop(TileIndex tile);

    47

    59

#endif /* NEWGRF_HOUSE_H */