1 /* $Id$ */

     2 

     3 #ifndef ROAD_H

     4 #define ROAD_H

     5 

     6 #include "macros.h"

     7 #include "rail.h"

     8 #include "tile.h"

     9 

    10 typedef enum RoadBits {

    11 	ROAD_NW  = 1,

    12 	ROAD_SW  = 2,

    13 	ROAD_SE  = 4,

    14 	ROAD_NE  = 8,

    15 	ROAD_X   = ROAD_SW | ROAD_NE,

    16 	ROAD_Y   = ROAD_NW | ROAD_SE,

    17 	ROAD_ALL = ROAD_X  | ROAD_Y

    18 } RoadBits;

    19 

    20 static inline RoadBits ComplementRoadBits(RoadBits r)

    21 {

    22 	return ROAD_ALL ^ r;

    23 }

    24 

    25 static inline RoadBits GetRoadBits(TileIndex tile)

    26 {

    27 	return GB(_m[tile].m5, 0, 4);

    28 }

    29 

    30 static inline RoadBits GetCrossingRoadBits(TileIndex tile)

    31 {

    32 	return _m[tile].m5 & 8 ? ROAD_Y : ROAD_X;

    33 }

    34 

    35 static inline TrackBits GetCrossingRailBits(TileIndex tile)

    36 {

    37 	return _m[tile].m5 & 8 ? TRACK_BIT_X : TRACK_BIT_Y;

    38 }

    39 

    40 

    41 typedef enum RoadType {

    42 	ROAD_NORMAL,

    43 	ROAD_CROSSING,

    44 	ROAD_DEPOT

    45 } RoadType;

    46 

    47 static inline RoadType GetRoadType(TileIndex tile)

    48 {

    49 	return GB(_m[tile].m5, 4, 4);

    50 }

    51 

    52 

    53 static inline void MakeRoadNormal(TileIndex t, Owner owner, RoadBits bits, uint town)

    54 {

    55 	SetTileType(t, MP_STREET);

    56 	SetTileOwner(t, owner);

    57 	_m[t].m2 = town;

    58 	_m[t].m3 = 0;

    59 	_m[t].m4 = 0 << 7 | 0 << 4 | 0;

    60 	_m[t].m5 = ROAD_NORMAL << 4 | bits;

    61 }

    62 

    63 

    64 static inline void MakeRoadCrossing(TileIndex t, Owner road, Owner rail, Axis roaddir, RailType rt, uint town)

    65 {

    66 	SetTileType(t, MP_STREET);

    67 	SetTileOwner(t, rail);

    68 	_m[t].m2 = town;

    69 	_m[t].m3 = road;

    70 	_m[t].m4 = 0 << 7 | 0 << 4 | rt;

    71 	_m[t].m5 = ROAD_CROSSING << 4 | roaddir << 3 | 0 << 2;

    72 }

    73 

    74 

    75 static inline void MakeRoadDepot(TileIndex t, Owner owner, DiagDirection dir)

    76 {

    77 	SetTileType(t, MP_STREET);

    78 	SetTileOwner(t, owner);

    79 	_m[t].m2 = 0;

    80 	_m[t].m3 = 0;

    81 	_m[t].m4 = 0;

    82 	_m[t].m5 = ROAD_DEPOT << 4 | dir;

    83 }

    84 

    85 #endif