road_map.cpp

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00001 /* $Id$ */
00002 
00003 /*
00004  * This file is part of OpenTTD.
00005  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
00006  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
00007  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
00008  */
00009 
00012 #include "stdafx.h"
00013 #include "station_map.h"
00014 #include "tunnelbridge_map.h"
00015 
00016 
00033 RoadBits GetAnyRoadBits(TileIndex tile, RoadType rt, bool straight_tunnel_bridge_entrance)
00034 {
00035   if (!HasTileRoadType(tile, rt)) return ROAD_NONE;
00036 
00037   switch (GetTileType(tile)) {
00038     case MP_ROAD:
00039       switch (GetRoadTileType(tile)) {
00040         default:
00041         case ROAD_TILE_NORMAL:   return GetRoadBits(tile, rt);
00042         case ROAD_TILE_CROSSING: return GetCrossingRoadBits(tile);
00043         case ROAD_TILE_DEPOT:    return DiagDirToRoadBits(GetRoadDepotDirection(tile));
00044       }
00045 
00046     case MP_STATION:
00047       if (!IsRoadStopTile(tile)) return ROAD_NONE;
00048       if (IsDriveThroughStopTile(tile)) return (GetRoadStopDir(tile) == DIAGDIR_NE) ? ROAD_X : ROAD_Y;
00049       return DiagDirToRoadBits(GetRoadStopDir(tile));
00050 
00051     case MP_TUNNELBRIDGE:
00052       if (GetTunnelBridgeTransportType(tile) != TRANSPORT_ROAD) return ROAD_NONE;
00053       return straight_tunnel_bridge_entrance ?
00054           AxisToRoadBits(DiagDirToAxis(GetTunnelBridgeDirection(tile))) :
00055           DiagDirToRoadBits(ReverseDiagDir(GetTunnelBridgeDirection(tile)));
00056 
00057     default: return ROAD_NONE;
00058   }
00059 }