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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_vehiclelist.cpp Implementation of AIVehicleList and friends. */

#include "ai_vehiclelist.hpp"
#include "ai_group.hpp"
#include "ai_map.hpp"
#include "ai_station.hpp"
#include "ai_vehicle.hpp"
#include "../../company_func.h"
#include "../../depot_base.h"
#include "../../depot_map.h"
#include "../../vehicle_base.h"

AIVehicleList::AIVehicleList()
{
	const Vehicle *v;
	FOR_ALL_VEHICLES(v) {
		if (v->owner == _current_company && v->IsPrimaryVehicle()) this->AddItem(v->index);
	}
}

AIVehicleList_Station::AIVehicleList_Station(StationID station_id)
{
	if (!AIBaseStation::IsValidBaseStation(station_id)) return;

	const Vehicle *v;
	FOR_ALL_VEHICLES(v) {
		if (v->owner == _current_company && v->IsPrimaryVehicle()) {
			const Order *order;

			FOR_VEHICLE_ORDERS(v, order) {
				if ((order->IsType(OT_GOTO_STATION) || order->IsType(OT_GOTO_WAYPOINT)) && order->GetDestination() == station_id) {
					this->AddItem(v->index);
					break;
				}
			}
		}
	}
}

AIVehicleList_Depot::AIVehicleList_Depot(TileIndex tile)
{
	if (!AIMap::IsValidTile(tile)) return;

	DestinationID dest;
	VehicleType type;

	switch (GetTileType(tile)) {
		case MP_STATION: // Aircraft
			if (!IsAirport(tile)) return;
			type = VEH_AIRCRAFT;
			dest = GetStationIndex(tile);
			break;

		case MP_RAILWAY:
			if (!IsRailDepot(tile)) return;
			type = VEH_TRAIN;
			dest = GetDepotIndex(tile);
			break;

		case MP_ROAD:
			if (!IsRoadDepot(tile)) return;
			type = VEH_ROAD;
			dest = GetDepotIndex(tile);
			break;

		case MP_WATER:
			if (!IsShipDepot(tile)) return;
			type = VEH_SHIP;
			dest = GetDepotIndex(tile);
			break;

		default: // No depot
			return;
	}

	const Vehicle *v;
	FOR_ALL_VEHICLES(v) {
		if (v->owner == _current_company && v->IsPrimaryVehicle() && v->type == type) {
			const Order *order;

			FOR_VEHICLE_ORDERS(v, order) {
				if (order->IsType(OT_GOTO_DEPOT) && order->GetDestination() == dest) {
					this->AddItem(v->index);
					break;
				}
			}
		}
	}
}

AIVehicleList_SharedOrders::AIVehicleList_SharedOrders(VehicleID vehicle_id)
{
	if (!AIVehicle::IsValidVehicle(vehicle_id)) return;

	for (const Vehicle *v = Vehicle::Get(vehicle_id)->FirstShared(); v != NULL; v = v->NextShared()) {
		this->AddItem(v->index);
	}
}

AIVehicleList_Group::AIVehicleList_Group(GroupID group_id)
{
	if (!AIGroup::IsValidGroup((AIGroup::GroupID)group_id)) return;

	const Vehicle *v;
	FOR_ALL_VEHICLES(v) {
		if (v->owner == _current_company && v->IsPrimaryVehicle()) {
			if (v->group_id == group_id) this->AddItem(v->index);
		}
	}
}

AIVehicleList_DefaultGroup::AIVehicleList_DefaultGroup(AIVehicle::VehicleType vehicle_type)
{
	if (vehicle_type < AIVehicle::VT_RAIL || vehicle_type > AIVehicle::VT_AIR) return;

	const Vehicle *v;
	FOR_ALL_VEHICLES(v) {
		if (v->owner == _current_company && v->IsPrimaryVehicle()) {
			if (v->type == vehicle_type && v->group_id == AIGroup::GROUP_DEFAULT) this->AddItem(v->index);
		}
	}
}