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/* $Id$ */
/*
* This file is part of OpenTTD.
* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
* OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
*/
/** @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"
#include "ai_basestation.hpp"
/**
* Class that handles all waypoint related functions.
*/
class AIWaypoint : public AIBaseStation {
public:
static const char *GetClassName() { return "AIWaypoint"; }
/**
* Type of waypoints known in the game.
*/
enum WaypointType {
/* Values are important, as they represent the internal state of the game. */
WAYPOINT_RAIL = 0x01, //!< Rail waypoint
WAYPOINT_BUOY = 0x10, //!< Buoy
WAYPOINT_ANY = 0x11, //!< All waypoint types
};
/**
* All waypoint related error messages.
*/
enum ErrorMessages {
/** Base for waypoint related errors */
ERR_WAYPOINT_BASE = AIError::ERR_CAT_WAYPOINT << AIError::ERR_CAT_BIT_SIZE,
/** The waypoint is build too close to another waypoint */
ERR_WAYPOINT_TOO_CLOSE_TO_ANOTHER_WAYPOINT, // [STR_ERROR_TOO_CLOSE_TO_ANOTHER_WAYPOINT]
/** The waypoint would join more than one existing waypoint together. */
ERR_WAYPOINT_ADJOINS_MULTIPLE_WAYPOINTS, // [STR_ERROR_WAYPOINT_ADJOINS_MORE_THAN_ONE_EXISTING]
};
/**
* 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(StationID waypoint_id);
/**
* Get the StationID of a tile.
* @param tile The tile to find the StationID of.
* @pre AIRail::IsRailWaypointTile(tile).
* @return StationID of the waypoint.
*/
static StationID GetWaypointID(TileIndex tile);
/**
* Check if any part of the waypoint contains a waypoint of the type waypoint_type
* @param waypoint_id The waypoint to look at.
* @param waypoint_type The WaypointType to look for.
* @return True if the waypoint has a waypoint part of the type waypoint_type.
*/
static bool HasWaypointType(StationID waypoint_id, WaypointType waypoint_type);
};
DECLARE_ENUM_AS_BIT_SET(AIWaypoint::WaypointType)
#endif /* AI_WAYPOINT_HPP */
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