# road_map.cpp

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    00001 /* $Id: road_map.cpp 12390 2008-03-22 10:56:08Z rubidium $ */
    00002
    00005 #include "stdafx.h"
    00006 #include "openttd.h"
    00007 #include "bridge_map.h"
    00008 #include "tile_cmd.h"
    00009 #include "road_map.h"
    00010 #include "station.h"
    00011 #include "tunnel_map.h"
    00012 #include "station_map.h"
    00013 #include "depot.h"
    00014 #include "tunnelbridge_map.h"
    00015
    00016
    00017 RoadBits GetAnyRoadBits(TileIndex tile, RoadType rt, bool straight_tunnel_bridge_entrance)
    00018 {
    00019   if (!HasTileRoadType(tile, rt)) return ROAD_NONE;
    00020
    00021   switch (GetTileType(tile)) {
    00022     case MP_ROAD:
    00023       switch (GetRoadTileType(tile)) {
    00024         default:
    00025         case ROAD_TILE_NORMAL:   return GetRoadBits(tile, rt);
    00026         case ROAD_TILE_CROSSING: return GetCrossingRoadBits(tile);
    00027         case ROAD_TILE_DEPOT:    return DiagDirToRoadBits(GetRoadDepotDirection(tile));
    00028       }
    00029
    00030     case MP_STATION:
    00031       if (!IsRoadStopTile(tile)) return ROAD_NONE;
    00032       if (IsDriveThroughStopTile(tile)) return (GetRoadStopDir(tile) == DIAGDIR_NE) ? ROAD_X : ROAD_Y;
    00033       return DiagDirToRoadBits(GetRoadStopDir(tile));
    00034
    00035     case MP_TUNNELBRIDGE:
    00036       if (GetTunnelBridgeTransportType(tile) != TRANSPORT_ROAD) return ROAD_NONE;
    00037       return straight_tunnel_bridge_entrance ?
    00038           AxisToRoadBits(DiagDirToAxis(GetTunnelBridgeDirection(tile))) :
    00039           DiagDirToRoadBits(ReverseDiagDir(GetTunnelBridgeDirection(tile)));
    00040
    00041     default: return ROAD_NONE;
    00042   }
    00043 }
    00044
    00045
    00046 TrackBits GetAnyRoadTrackBits(TileIndex tile, RoadType rt)
    00047 {
    00048   /* Don't allow local authorities to build roads through road depots or road stops. */
    00049   if (IsRoadDepotTile(tile) || (IsTileType(tile, MP_STATION) && !IsDriveThroughStopTile(tile)) || !HasTileRoadType(tile, rt)) {
    00050     return TRACK_BIT_NONE;
    00051   }
    00052
    00053   return TrackStatusToTrackBits(GetTileTrackStatus(tile, TRANSPORT_ROAD, RoadTypeToRoadTypes(rt)));
    00054 }