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/* $Id$ */
/** @file ai_waypoint.hpp Everything to query and build waypoints. */
#ifndef AI_WAYPOINT_HPP
#define AI_WAYPOINT_HPP
#include "ai_object.hpp"
#include "ai_error.hpp"
/**
* Class that handles all waypoint related functions.
*/
class AIWaypoint : public AIObject {
public:
static const char *GetClassName() { return "AIWaypoint"; }
/**
* Special waypoint IDs signalling different kinds of waypoints.
*/
enum SpecialWaypointIDs {
WAYPOINT_INVALID = 0xFFFF, //!< An invalid WaypointID.
};
/**
* Checks whether the given waypoint is valid and owned by you.
* @param waypoint_id The waypoint to check.
* @return True if and only if the waypoint is valid.
*/
static bool IsValidWaypoint(WaypointID waypoint_id);
/**
* Get the WaypointID of a tile.
* @param tile The tile to find the WaypointID of.
* @pre AIRail::IsRailWaypointTile(tile).
* @return WaypointID of the waypoint.
*/
static WaypointID GetWaypointID(TileIndex tile);
/**
* Get the name of a waypoint.
* @param waypoint_id The waypoint to get the name of.
* @pre IsValidWaypoint(waypoint_id).
* @return The name of the waypoint.
*/
static char *GetName(WaypointID waypoint_id);
/**
* Set the name this waypoint.
* @param waypoint_id The waypoint to set the name of.
* @param name The new name of the waypoint.
* @pre IsValidWaypointwaypoint_id).
* @pre 'name' must have at least one character.
* @pre 'name' must have at most 30 characters.
* @exception AIError::ERR_NAME_IS_NOT_UNIQUE
* @return True if the name was changed.
*/
static bool SetName(WaypointID waypoint_id, const char *name);
/**
* Get the current location of a waypoint.
* @param waypoint_id The waypoint to get the location of.
* @pre IsValidWaypoint(waypoint_id).
* @return The tile the waypoint is currently on.
*/
static TileIndex GetLocation(WaypointID waypoint_id);
};
#endif /* AI_WAYPOINT_HPP */
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