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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_station.cpp Implementation of AIStation. */
#include "../../stdafx.h"
#include "ai_station.hpp"
#include "ai_cargo.hpp"
#include "ai_map.hpp"
#include "ai_town.hpp"
#include "../../debug.h"
#include "../../station_base.h"
#include "../../roadstop_base.h"
#include "../../company_func.h"
#include "../../town.h"
/* static */ bool AIStation::IsValidStation(StationID station_id)
{
const Station *st = ::Station::GetIfValid(station_id);
return st != NULL && (st->owner == _current_company || st->owner == OWNER_NONE);
}
/* static */ StationID AIStation::GetStationID(TileIndex tile)
{
if (!::IsValidTile(tile) || !::IsTileType(tile, MP_STATION)) return INVALID_STATION;
return ::GetStationIndex(tile);
}
/* static */ int32 AIStation::GetCargoWaiting(StationID station_id, CargoID cargo_id)
{
if (!IsValidStation(station_id)) return -1;
if (!AICargo::IsValidCargo(cargo_id)) return -1;
return ::Station::Get(station_id)->goods[cargo_id].cargo.Count();
}
/* static */ int32 AIStation::GetCargoRating(StationID station_id, CargoID cargo_id)
{
if (!IsValidStation(station_id)) return -1;
if (!AICargo::IsValidCargo(cargo_id)) return -1;
return ::ToPercent8(::Station::Get(station_id)->goods[cargo_id].rating);
}
/* static */ int32 AIStation::GetCoverageRadius(AIStation::StationType station_type)
{
if (station_type == STATION_AIRPORT) {
DEBUG(ai, 0, "GetCoverageRadius(): coverage radius of airports needs to be requested via AIAirport::GetAirportCoverageRadius(), as it requires AirportType");
return -1;
}
if (!HasExactlyOneBit(station_type)) return -1;
if (!_settings_game.station.modified_catchment) return CA_UNMODIFIED;
switch (station_type) {
case STATION_TRAIN: return CA_TRAIN;
case STATION_TRUCK_STOP: return CA_TRUCK;
case STATION_BUS_STOP: return CA_BUS;
case STATION_DOCK: return CA_DOCK;
default: return CA_NONE;
}
}
/* static */ int32 AIStation::GetDistanceManhattanToTile(StationID station_id, TileIndex tile)
{
if (!IsValidStation(station_id)) return -1;
return AIMap::DistanceManhattan(tile, GetLocation(station_id));
}
/* static */ int32 AIStation::GetDistanceSquareToTile(StationID station_id, TileIndex tile)
{
if (!IsValidStation(station_id)) return -1;
return AIMap::DistanceSquare(tile, GetLocation(station_id));
}
/* static */ bool AIStation::IsWithinTownInfluence(StationID station_id, TownID town_id)
{
if (!IsValidStation(station_id)) return false;
return AITown::IsWithinTownInfluence(town_id, GetLocation(station_id));
}
/* static */ bool AIStation::HasStationType(StationID station_id, StationType station_type)
{
if (!IsValidStation(station_id)) return false;
if (!HasExactlyOneBit(station_type)) return false;
return (::Station::Get(station_id)->facilities & station_type) != 0;
}
/* static */ bool AIStation::HasRoadType(StationID station_id, AIRoad::RoadType road_type)
{
if (!IsValidStation(station_id)) return false;
if (!AIRoad::IsRoadTypeAvailable(road_type)) return false;
::RoadTypes r = RoadTypeToRoadTypes((::RoadType)road_type);
for (const RoadStop *rs = ::Station::Get(station_id)->GetPrimaryRoadStop(ROADSTOP_BUS); rs != NULL; rs = rs->next) {
if ((::GetRoadTypes(rs->xy) & r) != 0) return true;
}
for (const RoadStop *rs = ::Station::Get(station_id)->GetPrimaryRoadStop(ROADSTOP_TRUCK); rs != NULL; rs = rs->next) {
if ((::GetRoadTypes(rs->xy) & r) != 0) return true;
}
return false;
}
/* static */ TownID AIStation::GetNearestTown(StationID station_id)
{
if (!IsValidStation(station_id)) return INVALID_TOWN;
return ::Station::Get(station_id)->town->index;
}
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