1 /* $Id$ */

     2 

     3 #include "stdafx.h"

     4 #include "openttd.h"

     5 #include "road_map.h"

     6 #include "station.h"

     7 

     8 

     9 RoadBits GetAnyRoadBits(TileIndex tile)

    10 {

    11 	switch (GetTileType(tile)) {

    12 		case MP_STREET:

    13 			switch (GetRoadType(tile)) {

    14 				default:

    15 				case ROAD_NORMAL:   return GetRoadBits(tile);

    16 				case ROAD_CROSSING: return GetCrossingRoadBits(tile);

    17 				case ROAD_DEPOT:    return DiagDirToRoadBits(GB(_m[tile].m5, 0, 2));

    18 			}

    19 

    20 		case MP_STATION:

    21 			if (!IsRoadStationTile(tile)) return 0;

    22 			return DiagDirToRoadBits(GetRoadStationDir(tile));

    23 

    24 		case MP_TUNNELBRIDGE:

    25 			if (_m[tile].m5 & 0x80) {

    26 				// bridge

    27 				if (_m[tile].m5 & 0x40) {

    28 					// middle part

    29 					if ((_m[tile].m5 & 0x38) != 0x28) return 0; // no road under bridge

    30 					return _m[tile].m5 & 1 ? ROAD_X : ROAD_Y;

    31 				} else {

    32 					// ending

    33 					if (GB(_m[tile].m5, 1, 2) != TRANSPORT_ROAD) return 0; // not a road bridge

    34 					return _m[tile].m5 & 1 ? ROAD_Y : ROAD_X;

    35 				}

    36 			} else {

    37 				// tunnel

    38 				if (GB(_m[tile].m5, 2, 2) != TRANSPORT_ROAD) return 0; // not a road tunnel

    39 				return DiagDirToRoadBits(ReverseDiagDir(GB(_m[tile].m5, 0, 2)));

    40 			}

    41 

    42 		default: return 0;

    43 	}

    44 }