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/* $Id$ */

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/** @file ai_tile.hpp tile related functions */

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#ifndef AI_TILE_HPP

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#define AI_TILE_HPP

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#include "ai_abstractlist.hpp"

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/**

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 * Class that handles all tile related functions.

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 */

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class AITile : public AIObject {

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public:

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	/**

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

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	 */

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

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	/**

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	 * Check if this tile is buildable (e.g.: no things on it that needs removing).

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	 * @note Road and rail are considered buildable.

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	 * @pre tile is always positive and smaller than AIMap::GetMapSize().

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	 * @param tile the tile to check on.

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	 * @return true if it is buildable, false if not.

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	 */

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	static bool IsBuildable(TileIndex tile);

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	/**

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	 * Get the slope of a tile.

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	 * @pre tile is always positive and smaller than AIMap::GetMapSize().

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	 * @param tile the tile to check on.

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	 * @return 0 means flat, others indicate internal state of slope.

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	 */

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	static int32 GetSlope(TileIndex tile);

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	/**

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	 * Check how much cargo this tile accepts.

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	 *  It creates a radius around the tile and adds up all acceptance of this

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	 *   cargo and returns that value.

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	 * @pre tile is always positive and smaller than AIMap::GetMapSize().

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	 * @param tile the tile to check on.

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	 * @param cargo_type the cargo to check the acceptance of.

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	 * @return value below 8 means no acceptance; the more the better.

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	 */

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	static int32 GetCargoAcceptance(TileIndex tile, CargoID cargo_type);

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};

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#endif /* AI_TILE_HPP */