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/* $Id$ */
#include "stdafx.h"
#include "openttd.h"
#include "bridge_map.h"
#include "functions.h"
#include "road_map.h"
#include "station.h"
#include "tunnel_map.h"
#include "station_map.h"
#include "depot.h"
RoadBits GetAnyRoadBits(TileIndex tile)
{
switch (GetTileType(tile)) {
case MP_STREET:
switch (GetRoadTileType(tile)) {
default:
case ROAD_TILE_NORMAL: return GetRoadBits(tile);
case ROAD_TILE_CROSSING: return GetCrossingRoadBits(tile);
case ROAD_TILE_DEPOT: return DiagDirToRoadBits(GetRoadDepotDirection(tile));
}
case MP_STATION:
if (!IsRoadStopTile(tile)) return 0;
return DiagDirToRoadBits(GetRoadStopDir(tile));
case MP_TUNNELBRIDGE:
if (IsBridge(tile)) {
if (IsBridgeMiddle(tile)) {
if (!IsTransportUnderBridge(tile) ||
GetBridgeTransportType(tile) != TRANSPORT_ROAD) {
return 0;
}
return GetRoadBitsUnderBridge(tile);
} else {
// ending
if (GetBridgeTransportType(tile) != TRANSPORT_ROAD) return 0;
return DiagDirToRoadBits(ReverseDiagDir(GetBridgeRampDirection(tile)));
}
} else {
// tunnel
if (GetTunnelTransportType(tile) != TRANSPORT_ROAD) return 0;
return DiagDirToRoadBits(ReverseDiagDir(GetTunnelDirection(tile)));
}
default: return 0;
}
}
TrackBits GetAnyRoadTrackBits(TileIndex tile)
{
uint32 r;
// Don't allow local authorities to build roads through road depots or road stops.
if ((IsTileType(tile, MP_STREET) && IsTileDepotType(tile, TRANSPORT_ROAD)) || IsTileType(tile, MP_STATION)) {
return 0;
}
r = GetTileTrackStatus(tile, TRANSPORT_ROAD);
return (byte)(r | (r >> 8));
}
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