# ai_waypoint.cpp

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    00001 /* $Id: ai_waypoint.cpp 19019 2010-02-05 17:05:58Z smatz $ */
    00002
    00003 /*
    00004  * This file is part of OpenTTD.
    00005  * 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.
    00006  * 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.
    00007  * 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/>.
    00008  */
    00009
    00012 #include "ai_waypoint.hpp"
    00013 #include "ai_rail.hpp"
    00014 #include "ai_marine.hpp"
    00015 #include "../../company_func.h"
    00016 #include "../../waypoint_base.h"
    00017
    00018 /* static */ bool AIWaypoint::IsValidWaypoint(StationID waypoint_id)
    00019 {
    00020   const Waypoint *wp = ::Waypoint::GetIfValid(waypoint_id);
    00021   return wp != NULL && (wp->owner == _current_company || wp->owner == OWNER_NONE);
    00022 }
    00023
    00024 /* static */ StationID AIWaypoint::GetWaypointID(TileIndex tile)
    00025 {
    00026   if (!AIRail::IsRailWaypointTile(tile) && !AIMarine::IsBuoyTile(tile)) return STATION_INVALID;
    00027
    00028   return ::GetStationIndex(tile);
    00029 }
    00030
    00031 /* static */ bool AIWaypoint::HasWaypointType(StationID waypoint_id, WaypointType waypoint_type)
    00032 {
    00033   if (!IsValidWaypoint(waypoint_id)) return false;
    00034   if (!HasExactlyOneBit(waypoint_type)) return false;
    00035
    00036   return (::Waypoint::Get(waypoint_id)->facilities & waypoint_type) != 0;
    00037 }