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/* $Id$ */
/** @file road_map.cpp */
#include "stdafx.h"
#include "openttd.h"
#include "bridge_map.h"
#include "functions.h"
#include "landscape.h"
#include "road_map.h"
#include "station.h"
#include "tunnel_map.h"
#include "station_map.h"
#include "depot.h"
RoadBits GetAnyRoadBits(TileIndex tile, RoadType rt)
{
if (!HASBIT(GetRoadTypes(tile), rt)) return ROAD_NONE;
switch (GetTileType(tile)) {
case MP_STREET:
switch (GetRoadTileType(tile)) {
default:
case ROAD_TILE_NORMAL: return GetRoadBits(tile, rt);
case ROAD_TILE_CROSSING: return GetCrossingRoadBits(tile);
case ROAD_TILE_DEPOT: return DiagDirToRoadBits(GetRoadDepotDirection(tile));
}
case MP_STATION:
if (!IsRoadStopTile(tile)) return ROAD_NONE;
if (IsDriveThroughStopTile(tile)) return (GetRoadStopDir(tile) == DIAGDIR_NE) ? ROAD_X : ROAD_Y;
return DiagDirToRoadBits(GetRoadStopDir(tile));
case MP_TUNNELBRIDGE:
if (IsTunnel(tile)) {
if (GetTunnelTransportType(tile) != TRANSPORT_ROAD) return ROAD_NONE;
return DiagDirToRoadBits(ReverseDiagDir(GetTunnelDirection(tile)));
} else {
if (GetBridgeTransportType(tile) != TRANSPORT_ROAD) return ROAD_NONE;
return DiagDirToRoadBits(ReverseDiagDir(GetBridgeRampDirection(tile)));
}
default: return ROAD_NONE;
}
}
TrackBits GetAnyRoadTrackBits(TileIndex tile, RoadType rt)
{
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) && !IsDriveThroughStopTile(tile)) || !HASBIT(GetRoadTypes(tile), rt)) {
return TRACK_BIT_NONE;
}
r = GetTileTrackStatus(tile, TRANSPORT_ROAD);
return (TrackBits)(byte)(r | (r >> 8));
}
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