181 /*

   182  * Some functions to query rail tiles

   183  */

   184 

   185 

   186 /**

   187  * Checks if a rail tile has signals.

   188  */

   189 static inline bool HasSignals(TileIndex tile)

   190 {

   191 	return GetRailTileType(tile) == RAIL_TYPE_SIGNALS;

   192 }

   193 

   194 /**

   195  * Returns the RailTileSubtype of a given rail tile with type

   196  * RAIL_TYPE_DEPOT_WAYPOINT

   197  */

   198 static inline RailTileSubtype GetRailTileSubtype(TileIndex tile)

   199 {

   200 	assert(GetRailTileType(tile) == RAIL_TYPE_DEPOT_WAYPOINT);

   201 	return (RailTileSubtype)(_m[tile].m5 & RAIL_SUBTYPE_MASK);

   202 }

   203 

   204 /**

   205  * Returns whether this is plain rails, with or without signals. Iow, if this

   206  * tiles RailTileType is RAIL_TYPE_NORMAL or RAIL_TYPE_SIGNALS.

   207  */

   208 static inline bool IsPlainRailTile(TileIndex tile)

   209 {

   210 	RailTileType rtt = GetRailTileType(tile);

   211 	return rtt == RAIL_TYPE_NORMAL || rtt == RAIL_TYPE_SIGNALS;

   212 }

   213 

   214 

   215 /**

   216  * Returns whether the given track is present on the given tile. Tile must be

   217  * a plain rail tile (IsPlainRailTile()).

   218  */

   219 static inline bool HasTrack(TileIndex tile, Track track)

   220 {

   221 	assert(IsValidTrack(track));

   222 	return HASBIT(GetTrackBits(tile), track);

   223 }