road_map.cpp

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/*
 * This file is part of OpenTTD.
 * 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.
 * 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.
 * 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/>.
 */
 
#include "stdafx.h"
#include "station_map.h"
#include "tunnelbridge_map.h"
 
#include "safeguards.h"
 
 
RoadBits GetAnyRoadBits(Tile tile, RoadTramType rtt, bool straight_tunnel_bridge_entrance)
{
  if (!MayHaveRoad(tile) || !HasTileRoadType(tile, rtt)) return ROAD_NONE;
 
  switch (GetTileType(tile)) {
    case MP_ROAD:
      switch (GetRoadTileType(tile)) {
        default:
        case ROAD_TILE_NORMAL:   return GetRoadBits(tile, rtt);
        case ROAD_TILE_CROSSING: return GetCrossingRoadBits(tile);
        case ROAD_TILE_DEPOT:    return DiagDirToRoadBits(GetRoadDepotDirection(tile));
      }
 
    case MP_STATION:
      if (!IsAnyRoadStopTile(tile)) return ROAD_NONE;
      if (IsDriveThroughStopTile(tile)) return (GetRoadStopDir(tile) == DIAGDIR_NE) ? ROAD_X : ROAD_Y;
      return DiagDirToRoadBits(GetRoadStopDir(tile));
 
    case MP_TUNNELBRIDGE:
      if (GetTunnelBridgeTransportType(tile) != TRANSPORT_ROAD) return ROAD_NONE;
      return straight_tunnel_bridge_entrance ?
          AxisToRoadBits(DiagDirToAxis(GetTunnelBridgeDirection(tile))) :
          DiagDirToRoadBits(ReverseDiagDir(GetTunnelBridgeDirection(tile)));
 
    default: return ROAD_NONE;
  }
}