tron@3146: /* $Id$ */
tron@3146: 
rubidium@10455: /** @file road_map.cpp Complex road accessors. */
glx@9574: 
tron@3146: #include "stdafx.h"
tron@3146: #include "openttd.h"
tron@3196: #include "bridge_map.h"
rubidium@9723: #include "tile_cmd.h"
tron@3146: #include "road_map.h"
tron@3154: #include "tunnel_map.h"
celestar@3404: #include "station_map.h"
rubidium@9723: #include "tunnelbridge_map.h"
tron@3146: 
tron@3146: 
rubidium@9826: RoadBits GetAnyRoadBits(TileIndex tile, RoadType rt, bool straight_tunnel_bridge_entrance)
tron@3146: {
glx@9732: 	if (!HasTileRoadType(tile, rt)) return ROAD_NONE;
glx@9624: 
tron@3146: 	switch (GetTileType(tile)) {
rubidium@9694: 		case MP_ROAD:
rubidium@3793: 			switch (GetRoadTileType(tile)) {
tron@3146: 				default:
glx@9624: 				case ROAD_TILE_NORMAL:   return GetRoadBits(tile, rt);
rubidium@3793: 				case ROAD_TILE_CROSSING: return GetCrossingRoadBits(tile);
rubidium@3793: 				case ROAD_TILE_DEPOT:    return DiagDirToRoadBits(GetRoadDepotDirection(tile));
tron@3146: 			}
tron@3146: 
tron@3146: 		case MP_STATION:
rubidium@5838: 			if (!IsRoadStopTile(tile)) return ROAD_NONE;
rubidium@6338: 			if (IsDriveThroughStopTile(tile)) return (GetRoadStopDir(tile) == DIAGDIR_NE) ? ROAD_X : ROAD_Y;
celestar@3404: 			return DiagDirToRoadBits(GetRoadStopDir(tile));
tron@3146: 
tron@3146: 		case MP_TUNNELBRIDGE:
rubidium@9723: 			if (GetTunnelBridgeTransportType(tile) != TRANSPORT_ROAD) return ROAD_NONE;
rubidium@9826: 			return straight_tunnel_bridge_entrance ?
rubidium@9826: 					AxisToRoadBits(DiagDirToAxis(GetTunnelBridgeDirection(tile))) :
rubidium@9826: 					DiagDirToRoadBits(ReverseDiagDir(GetTunnelBridgeDirection(tile)));
tron@3146: 
rubidium@5838: 		default: return ROAD_NONE;
tron@3146: 	}
tron@3146: }
tron@3150: 
tron@3150: 
glx@9624: TrackBits GetAnyRoadTrackBits(TileIndex tile, RoadType rt)
tron@3150: {
glx@9574: 	/* Don't allow local authorities to build roads through road depots or road stops. */
glx@9732: 	if (IsRoadDepotTile(tile) || (IsTileType(tile, MP_STATION) && !IsDriveThroughStopTile(tile)) || !HasTileRoadType(tile, rt)) {
rubidium@5838: 		return TRACK_BIT_NONE;
KUDr@3927: 	}
peter1138@4233: 
glx@9732: 	return TrackStatusToTrackBits(GetTileTrackStatus(tile, TRANSPORT_ROAD, RoadTypeToRoadTypes(rt)));
tron@3150: }