101 /**

   102  * Get the manhattan distance to a tile for entries in an AITileList instance.

   103  * @note resulting items are of the type distance

   104  * @note the input items are of the type TileIndex

   105  */

   106 class AITileListDistanceManhattanToTile : public AIAbstractList::Valuator {

   107 public:

   108 	/**

   109 	 * The name of the class, needed by several sub-processes.

   110 	 */

   111 	static const char *GetClassName() { return "AITileListDistanceManhattanToTile"; }

   112 

   113 	/**

   114 	 * Custom constructor, we want a tile as parameter.

   115 	 */

   116 	AITileListDistanceManhattanToTile(TileIndex tile) { this->tile = tile; }

   117 

   118 private:

   119 	TileIndex tile;

   120 

   121 	int32 Valuate(int32 station) const;

   122 };

   123 

   124 /**

   125  * Get the sqsuare distance to a tile for entries in an AITileList instance.

   126  * @note resulting items are of the type distance

   127  * @note the input items are of the type TileIndex

   128  */

   129 class AITileListDistanceSquareToTile : public AIAbstractList::Valuator {

   130 public:

   131 	/**

   132 	 * The name of the class, needed by several sub-processes.

   133 	 */

   134 	static const char *GetClassName() { return "AITileListDistanceSquareToTile"; }

   135 

   136 	/**

   137 	 * Custom constructor, we want a tile as parameter.

   138 	 */

   139 	AITileListDistanceSquareToTile(TileIndex tile) { this->tile = tile; }

   140 

   141 private:

   142 	TileIndex tile;

   143 

   144 	int32 Valuate(int32 station) const;

   145 };

   146 

   147