road_map.cpp

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00001 /* $Id: road_map.cpp 16804 2009-07-13 10:16:50Z rubidium $ */
00002 
00005 #include "stdafx.h"
00006 #include "station_map.h"
00007 #include "tunnelbridge_map.h"
00008 
00009 
00010 RoadBits GetAnyRoadBits(TileIndex tile, RoadType rt, bool straight_tunnel_bridge_entrance)
00011 {
00012   if (!HasTileRoadType(tile, rt)) return ROAD_NONE;
00013 
00014   switch (GetTileType(tile)) {
00015     case MP_ROAD:
00016       switch (GetRoadTileType(tile)) {
00017         default:
00018         case ROAD_TILE_NORMAL:   return GetRoadBits(tile, rt);
00019         case ROAD_TILE_CROSSING: return GetCrossingRoadBits(tile);
00020         case ROAD_TILE_DEPOT:    return DiagDirToRoadBits(GetRoadDepotDirection(tile));
00021       }
00022 
00023     case MP_STATION:
00024       if (!IsRoadStopTile(tile)) return ROAD_NONE;
00025       if (IsDriveThroughStopTile(tile)) return (GetRoadStopDir(tile) == DIAGDIR_NE) ? ROAD_X : ROAD_Y;
00026       return DiagDirToRoadBits(GetRoadStopDir(tile));
00027 
00028     case MP_TUNNELBRIDGE:
00029       if (GetTunnelBridgeTransportType(tile) != TRANSPORT_ROAD) return ROAD_NONE;
00030       return straight_tunnel_bridge_entrance ?
00031           AxisToRoadBits(DiagDirToAxis(GetTunnelBridgeDirection(tile))) :
00032           DiagDirToRoadBits(ReverseDiagDir(GetTunnelBridgeDirection(tile)));
00033 
00034     default: return ROAD_NONE;
00035   }
00036 }

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