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/* $Id$ */
#include "stdafx.h"
#include "openttd.h"
#include "functions.h"
#include "road_map.h"
#include "station.h"
RoadBits GetAnyRoadBits(TileIndex tile)
{
switch (GetTileType(tile)) {
case MP_STREET:
switch (GetRoadType(tile)) {
default:
case ROAD_NORMAL: return GetRoadBits(tile);
case ROAD_CROSSING: return GetCrossingRoadBits(tile);
case ROAD_DEPOT: return DiagDirToRoadBits(GB(_m[tile].m5, 0, 2));
}
case MP_STATION:
if (!IsRoadStationTile(tile)) return 0;
return DiagDirToRoadBits(GetRoadStationDir(tile));
case MP_TUNNELBRIDGE:
if (_m[tile].m5 & 0x80) {
// bridge
if (_m[tile].m5 & 0x40) {
// middle part
if ((_m[tile].m5 & 0x38) != 0x28) return 0; // no road under bridge
return _m[tile].m5 & 1 ? ROAD_X : ROAD_Y;
} else {
// ending
if (GB(_m[tile].m5, 1, 2) != TRANSPORT_ROAD) return 0; // not a road bridge
return _m[tile].m5 & 1 ? ROAD_Y : ROAD_X;
}
} else {
// tunnel
if (GB(_m[tile].m5, 2, 2) != TRANSPORT_ROAD) return 0; // not a road tunnel
return DiagDirToRoadBits(ReverseDiagDir(GB(_m[tile].m5, 0, 2)));
}
default: return 0;
}
}
TrackBits GetAnyRoadTrackBits(TileIndex tile)
{
uint32 r = GetTileTrackStatus(tile, TRANSPORT_ROAD);
return (byte)(r | (r >> 8));
}
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