+
−/* $Id$ */
+
−
+
−/*
+
− * 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_order.cpp Implementation of AIOrder. */
+
−
+
−#include "../../stdafx.h"
+
−#include "ai_order.hpp"
+
−#include "ai_vehicle.hpp"
+
−#include "../ai_instance.hpp"
+
−#include "../../debug.h"
+
−#include "../../vehicle_base.h"
+
−#include "../../roadstop_base.h"
+
−#include "../../depot_base.h"
+
−#include "../../station_base.h"
+
−#include "../../waypoint_base.h"
+
−
+
−/**
+
− * Gets the order type given a tile
+
− * @param t the tile to get the order from
+
− * @return the order type, or OT_END when there is no order
+
− */
+
−static OrderType GetOrderTypeByTile(TileIndex t)
+
−{
+
−	if (!::IsValidTile(t)) return OT_END;
+
−
+
−	switch (::GetTileType(t)) {
+
−		default: break;
+
−		case MP_STATION:
+
−			if (IsBuoy(t) || IsRailWaypoint(t)) return OT_GOTO_WAYPOINT;
+
−			if (IsHangar(t)) return OT_GOTO_DEPOT;
+
−			return OT_GOTO_STATION;
+
−
+
−		case MP_WATER:   if (::IsShipDepot(t)) return OT_GOTO_DEPOT; break;
+
−		case MP_ROAD:    if (::GetRoadTileType(t) == ROAD_TILE_DEPOT) return OT_GOTO_DEPOT; break;
+
−		case MP_RAILWAY:
+
−			if (IsRailDepot(t)) return OT_GOTO_DEPOT;
+
−			break;
+
−	}
+
−
+
−	return OT_END;
+
−}
+
−
+
−/* static */ bool AIOrder::IsValidVehicleOrder(VehicleID vehicle_id, OrderPosition order_position)
+
−{
+
−	return AIVehicle::IsValidVehicle(vehicle_id) && order_position >= 0 && (order_position < ::Vehicle::Get(vehicle_id)->GetNumOrders() || order_position == ORDER_CURRENT);
+
−}
+
−
+
−/**
+
− * Get the current order the vehicle is executing. If the current order is in
+
− *  the order list, return the order from the orderlist. If the current order
+
− *  was a manual order, return the current order.
+
− */
+
−static const Order *ResolveOrder(VehicleID vehicle_id, AIOrder::OrderPosition order_position)
+
−{
+
−	const Vehicle *v = ::Vehicle::Get(vehicle_id);
+
−	if (order_position == AIOrder::ORDER_CURRENT) {
+
−		const Order *order = &v->current_order;
+
−		if (order->GetType() == OT_GOTO_DEPOT && !(order->GetDepotOrderType() & ODTFB_PART_OF_ORDERS)) return order;
+
−		order_position = AIOrder::ResolveOrderPosition(vehicle_id, order_position);
+
−		if (order_position == AIOrder::ORDER_INVALID) return NULL;
+
−	}
+
−	return v->GetOrder(order_position);
+
−}
+
−
+
−/* static */ bool AIOrder::IsGotoStationOrder(VehicleID vehicle_id, OrderPosition order_position)
+
−{
+
−	if (!IsValidVehicleOrder(vehicle_id, order_position)) return false;
+
−
+
−	const Order *order = ::ResolveOrder(vehicle_id, order_position);
+
−	return order != NULL && order->GetType() == OT_GOTO_STATION;
+
−}
+
−
+
−/* static */ bool AIOrder::IsGotoDepotOrder(VehicleID vehicle_id, OrderPosition order_position)
+
−{
+
−	if (!IsValidVehicleOrder(vehicle_id, order_position)) return false;
+
−
+
−	const Order *order = ::ResolveOrder(vehicle_id, order_position);
+
−	return order != NULL && order->GetType() == OT_GOTO_DEPOT;
+
−}
+
−
+
−/* static */ bool AIOrder::IsGotoWaypointOrder(VehicleID vehicle_id, OrderPosition order_position)
+
−{
+
−	if (!IsValidVehicleOrder(vehicle_id, order_position)) return false;
+
−
+
−	const Order *order = ::ResolveOrder(vehicle_id, order_position);
+
−	return order != NULL && order->GetType() == OT_GOTO_WAYPOINT;
+
−}
+
−
+
−/* static */ bool AIOrder::IsConditionalOrder(VehicleID vehicle_id, OrderPosition order_position)
+
−{
+
−	if (order_position == ORDER_CURRENT) return false;
+
−	if (!IsValidVehicleOrder(vehicle_id, order_position)) return false;
+
−
+
−	const Order *order = Vehicle::Get(vehicle_id)->GetOrder(order_position);
+
−	return order->GetType() == OT_CONDITIONAL;
+
−}
+
−
+
−/* static */ bool AIOrder::IsVoidOrder(VehicleID vehicle_id, OrderPosition order_position)
+
−{
+
−	if (order_position == ORDER_CURRENT) return false;
+
−	if (!IsValidVehicleOrder(vehicle_id, order_position)) return false;
+
−
+
−	const Order *order = Vehicle::Get(vehicle_id)->GetOrder(order_position);
+
−	return order->GetType() == OT_DUMMY;
+
−}
+
−
+
−/* static */ bool AIOrder::IsCurrentOrderPartOfOrderList(VehicleID vehicle_id)
+
−{
+
−	if (AIVehicle::IsValidVehicle(vehicle_id)) return false;
+
−	if (GetOrderCount(vehicle_id) == 0) return false;
+
−
+
−	const Order *order = &::Vehicle::Get(vehicle_id)->current_order;
+
−	if (order->GetType() != OT_GOTO_DEPOT) return true;
+
−	return (order->GetDepotOrderType() & ODTFB_PART_OF_ORDERS) != 0;
+
−}
+
−
+
−/* static */ AIOrder::OrderPosition AIOrder::ResolveOrderPosition(VehicleID vehicle_id, OrderPosition order_position)
+
−{
+
−	if (!AIVehicle::IsValidVehicle(vehicle_id)) return ORDER_INVALID;
+
−
+
−	if (order_position == ORDER_CURRENT) return (AIOrder::OrderPosition)::Vehicle::Get(vehicle_id)->cur_order_index;
+
−	return (order_position >= 0 && order_position < ::Vehicle::Get(vehicle_id)->GetNumOrders()) ? order_position : ORDER_INVALID;
+
−}
+
−
+
−
+
−/* static */ bool AIOrder::AreOrderFlagsValid(TileIndex destination, AIOrderFlags order_flags)
+
−{
+
−	OrderType ot = (order_flags & AIOF_GOTO_NEAREST_DEPOT) ? OT_GOTO_DEPOT : ::GetOrderTypeByTile(destination);
+
−	switch (ot) {
+
−		case OT_GOTO_STATION:
+
−			return (order_flags & ~(AIOF_NON_STOP_FLAGS | AIOF_UNLOAD_FLAGS | AIOF_LOAD_FLAGS)) == 0 &&
+
−					/* Test the different mutual exclusive flags. */
+
−					((order_flags & AIOF_TRANSFER)      == 0 || (order_flags & AIOF_UNLOAD)    == 0) &&
+
−					((order_flags & AIOF_TRANSFER)      == 0 || (order_flags & AIOF_NO_UNLOAD) == 0) &&
+
−					((order_flags & AIOF_UNLOAD)        == 0 || (order_flags & AIOF_NO_UNLOAD) == 0) &&
+
−					((order_flags & AIOF_UNLOAD)        == 0 || (order_flags & AIOF_NO_UNLOAD) == 0) &&
+
−					((order_flags & AIOF_NO_UNLOAD)     == 0 || (order_flags & AIOF_NO_LOAD)   == 0) &&
+
−					((order_flags & AIOF_FULL_LOAD_ANY) == 0 || (order_flags & AIOF_NO_LOAD)   == 0);
+
−
+
−		case OT_GOTO_DEPOT:
+
−			return (order_flags & ~(AIOF_NON_STOP_FLAGS | AIOF_DEPOT_FLAGS)) == 0 &&
+
−					((order_flags & AIOF_SERVICE_IF_NEEDED) == 0 || (order_flags & AIOF_STOP_IN_DEPOT) == 0);
+
−
+
−		case OT_GOTO_WAYPOINT: return (order_flags & ~(AIOF_NON_STOP_FLAGS)) == 0;
+
−		default:               return false;
+
−	}
+
−}
+
−
+
−/* static */ bool AIOrder::IsValidConditionalOrder(OrderCondition condition, CompareFunction compare)
+
−{
+
−	switch (condition) {
+
−		case OC_LOAD_PERCENTAGE:
+
−		case OC_RELIABILITY:
+
−		case OC_MAX_SPEED:
+
−		case OC_AGE:
+
−			return compare >= CF_EQUALS && compare <= CF_MORE_EQUALS;
+
−
+
−		case OC_REQUIRES_SERVICE:
+
−			return compare == CF_IS_TRUE || compare == CF_IS_FALSE;
+
−
+
−		case OC_UNCONDITIONALLY:
+
−			return true;
+
−
+
−		default: return false;
+
−	}
+
−}
+
−
+
−/* static */ int32 AIOrder::GetOrderCount(VehicleID vehicle_id)
+
−{
+
−	return AIVehicle::IsValidVehicle(vehicle_id) ? ::Vehicle::Get(vehicle_id)->GetNumOrders() : -1;
+
−}
+
−
+
−/* static */ TileIndex AIOrder::GetOrderDestination(VehicleID vehicle_id, OrderPosition order_position)
+
−{
+
−	if (!IsValidVehicleOrder(vehicle_id, order_position)) return INVALID_TILE;
+
−
+
−	const Order *order = ::ResolveOrder(vehicle_id, order_position);
+
−	if (order == NULL || order->GetType() == OT_CONDITIONAL) return INVALID_TILE;
+
−	const Vehicle *v = ::Vehicle::Get(vehicle_id);
+
−
+
−	switch (order->GetType()) {
+
−		case OT_GOTO_DEPOT: {
+
−			/* We don't know where the nearest depot is... (yet) */
+
−			if (order->GetDepotActionType() & ODATFB_NEAREST_DEPOT) return INVALID_TILE;
+
−
+
−			if (v->type != VEH_AIRCRAFT) return ::Depot::Get(order->GetDestination())->xy;
+
−			/* Aircraft's hangars are referenced by StationID, not DepotID */
+
−			const Station *st = ::Station::Get(order->GetDestination());
+
−			if (!st->airport.HasHangar()) return INVALID_TILE;
+
−			return st->airport.GetHangarTile(0);
+
−		}
+
−
+
−		case OT_GOTO_STATION: {
+
−			const Station *st = ::Station::Get(order->GetDestination());
+
−			if (st->train_station.tile != INVALID_TILE) {
+
−				TILE_AREA_LOOP(t, st->train_station) {
+
−					if (st->TileBelongsToRailStation(t)) return t;
+
−				}
+
−			} else if (st->dock_tile != INVALID_TILE) {
+
−				return st->dock_tile;
+
−			} else if (st->bus_stops != NULL) {
+
−				return st->bus_stops->xy;
+
−			} else if (st->truck_stops != NULL) {
+
−				return st->truck_stops->xy;
+
−			} else if (st->airport.tile != INVALID_TILE) {
+
−				TILE_AREA_LOOP(tile, st->airport) {
+
−					if (st->TileBelongsToAirport(tile) && !::IsHangar(tile)) return tile;
+
−				}
+
−			}
+
−			return INVALID_TILE;
+
−		}
+
−
+
−		case OT_GOTO_WAYPOINT: {
+
−			const Waypoint *wp = ::Waypoint::Get(order->GetDestination());
+
−			if (wp->train_station.tile != INVALID_TILE) {
+
−				TILE_AREA_LOOP(t, wp->train_station) {
+
−					if (wp->TileBelongsToRailStation(t)) return t;
+
−				}
+
−			}
+
−			/* If the waypoint has no rail waypoint tiles, it must have a buoy */
+
−			return wp->xy;
+
−		}
+
−		default:               return INVALID_TILE;
+
−	}
+
−}
+
−
+
−/* static */ AIOrder::AIOrderFlags AIOrder::GetOrderFlags(VehicleID vehicle_id, OrderPosition order_position)
+
−{
+
−	if (!IsValidVehicleOrder(vehicle_id, order_position)) return AIOF_INVALID;
+
−
+
−	const Order *order = ::ResolveOrder(vehicle_id, order_position);
+
−	if (order == NULL || order->GetType() == OT_CONDITIONAL || order->GetType() == OT_DUMMY) return AIOF_INVALID;
+
−
+
−	AIOrderFlags order_flags = AIOF_NONE;
+
−	order_flags |= (AIOrderFlags)order->GetNonStopType();
+
−	switch (order->GetType()) {
+
−		case OT_GOTO_DEPOT:
+
−			if (order->GetDepotOrderType() & ODTFB_SERVICE) order_flags |= AIOF_SERVICE_IF_NEEDED;
+
−			if (order->GetDepotActionType() & ODATFB_HALT) order_flags |= AIOF_STOP_IN_DEPOT;
+
−			if (order->GetDepotActionType() & ODATFB_NEAREST_DEPOT) order_flags |= AIOF_GOTO_NEAREST_DEPOT;
+
−			break;
+
−
+
−		case OT_GOTO_STATION:
+
−			order_flags |= (AIOrderFlags)(order->GetLoadType()   << 5);
+
−			order_flags |= (AIOrderFlags)(order->GetUnloadType() << 2);
+
−			break;
+
−
+
−		default: break;
+
−	}
+
−
+
−	return order_flags;
+
−}
+
−
+
−/* static */ AIOrder::OrderPosition AIOrder::GetOrderJumpTo(VehicleID vehicle_id, OrderPosition order_position)
+
−{
+
−	if (!IsValidVehicleOrder(vehicle_id, order_position)) return ORDER_INVALID;
+
−	if (order_position == ORDER_CURRENT || !IsConditionalOrder(vehicle_id, order_position)) return ORDER_INVALID;
+
−
+
−	const Order *order = Vehicle::Get(vehicle_id)->GetOrder(order_position);
+
−	return (OrderPosition)order->GetConditionSkipToOrder();
+
−}
+
−
+
−/* static */ AIOrder::OrderCondition AIOrder::GetOrderCondition(VehicleID vehicle_id, OrderPosition order_position)
+
−{
+
−	if (!IsValidVehicleOrder(vehicle_id, order_position)) return OC_INVALID;
+
−	if (order_position == ORDER_CURRENT || !IsConditionalOrder(vehicle_id, order_position)) return OC_INVALID;
+
−
+
−	const Order *order = Vehicle::Get(vehicle_id)->GetOrder(order_position);
+
−	return (OrderCondition)order->GetConditionVariable();
+
−}
+
−
+
−/* static */ AIOrder::CompareFunction AIOrder::GetOrderCompareFunction(VehicleID vehicle_id, OrderPosition order_position)
+
−{
+
−	if (!IsValidVehicleOrder(vehicle_id, order_position)) return CF_INVALID;
+
−	if (order_position == ORDER_CURRENT || !IsConditionalOrder(vehicle_id, order_position)) return CF_INVALID;
+
−
+
−	const Order *order = Vehicle::Get(vehicle_id)->GetOrder(order_position);
+
−	return (CompareFunction)order->GetConditionComparator();
+
−}
+
−
+
−/* static */ int32 AIOrder::GetOrderCompareValue(VehicleID vehicle_id, OrderPosition order_position)
+
−{
+
−	if (!IsValidVehicleOrder(vehicle_id, order_position)) return -1;
+
−	if (order_position == ORDER_CURRENT || !IsConditionalOrder(vehicle_id, order_position)) return -1;
+
−
+
−	const Order *order = Vehicle::Get(vehicle_id)->GetOrder(order_position);
+
−	int32 value = order->GetConditionValue();
+
−	if (order->GetConditionVariable() == OCV_MAX_SPEED) value = value * 16 / 10;
+
−	return value;
+
−}
+
−
+
−/* static */ AIOrder::StopLocation AIOrder::GetStopLocation(VehicleID vehicle_id, OrderPosition order_position)
+
−{
+
−	if (!IsValidVehicleOrder(vehicle_id, order_position)) return STOPLOCATION_INVALID;
+
−	if (AIVehicle::GetVehicleType(vehicle_id) != AIVehicle::VT_RAIL) return STOPLOCATION_INVALID;
+
−	if (!IsGotoStationOrder(vehicle_id, order_position)) return STOPLOCATION_INVALID;
+
−
+
−	const Order *order = Vehicle::Get(vehicle_id)->GetOrder(order_position);
+
−	return (AIOrder::StopLocation)order->GetStopLocation();
+
−}
+
−
+
−/* static */ bool AIOrder::SetOrderJumpTo(VehicleID vehicle_id, OrderPosition order_position, OrderPosition jump_to)
+
−{
+
−	EnforcePrecondition(false, IsValidVehicleOrder(vehicle_id, order_position));
+
−	EnforcePrecondition(false, order_position != ORDER_CURRENT && IsConditionalOrder(vehicle_id, order_position));
+
−	EnforcePrecondition(false, IsValidVehicleOrder(vehicle_id, jump_to) && jump_to != ORDER_CURRENT);
+
−
+
−	return AIObject::DoCommand(0, vehicle_id | (order_position << 20), MOF_COND_DESTINATION | (jump_to << 4), CMD_MODIFY_ORDER);
+
−}
+
−
+
−/* static */ bool AIOrder::SetOrderCondition(VehicleID vehicle_id, OrderPosition order_position, OrderCondition condition)
+
−{
+
−	EnforcePrecondition(false, IsValidVehicleOrder(vehicle_id, order_position));
+
−	EnforcePrecondition(false, order_position != ORDER_CURRENT && IsConditionalOrder(vehicle_id, order_position));
+
−	EnforcePrecondition(false, condition >= OC_LOAD_PERCENTAGE && condition <= OC_UNCONDITIONALLY);
+
−
+
−	return AIObject::DoCommand(0, vehicle_id | (order_position << 20), MOF_COND_VARIABLE | (condition << 4), CMD_MODIFY_ORDER);
+
−}
+
−
+
−/* static */ bool AIOrder::SetOrderCompareFunction(VehicleID vehicle_id, OrderPosition order_position, CompareFunction compare)
+
−{
+
−	EnforcePrecondition(false, IsValidVehicleOrder(vehicle_id, order_position));
+
−	EnforcePrecondition(false, order_position != ORDER_CURRENT && IsConditionalOrder(vehicle_id, order_position));
+
−	EnforcePrecondition(false, compare >= CF_EQUALS && compare <= CF_IS_FALSE);
+
−
+
−	return AIObject::DoCommand(0, vehicle_id | (order_position << 20), MOF_COND_COMPARATOR | (compare << 4), CMD_MODIFY_ORDER);
+
−}
+
−
+
−/* static */ bool AIOrder::SetOrderCompareValue(VehicleID vehicle_id, OrderPosition order_position, int32 value)
+
−{
+
−	EnforcePrecondition(false, IsValidVehicleOrder(vehicle_id, order_position));
+
−	EnforcePrecondition(false, order_position != ORDER_CURRENT && IsConditionalOrder(vehicle_id, order_position));
+
−	EnforcePrecondition(false, value >= 0 && value < 2048);
+
−	if (GetOrderCondition(vehicle_id, order_position) == OC_MAX_SPEED) value = value * 10 / 16;
+
−
+
−	return AIObject::DoCommand(0, vehicle_id | (order_position << 20), MOF_COND_VALUE | (value << 4), CMD_MODIFY_ORDER);
+
−}
+
−
+
−/* static */ bool AIOrder::SetStopLocation(VehicleID vehicle_id, OrderPosition order_position, StopLocation stop_location)
+
−{
+
−	EnforcePrecondition(false, IsValidVehicleOrder(vehicle_id, order_position));
+
−	EnforcePrecondition(false, AIVehicle::GetVehicleType(vehicle_id) == AIVehicle::VT_RAIL);
+
−	EnforcePrecondition(false, IsGotoStationOrder(vehicle_id, order_position));
+
−	EnforcePrecondition(false, stop_location >= STOPLOCATION_NEAR && stop_location <= STOPLOCATION_FAR);
+
−
+
−	uint32 p1 = vehicle_id | (order_position << 20);
+
−	uint32 p2 = MOF_STOP_LOCATION | (stop_location << 4);
+
−	return AIObject::DoCommand(0, p1, p2, CMD_MODIFY_ORDER);
+
−}
+
−
+
−/* static */ bool AIOrder::AppendOrder(VehicleID vehicle_id, TileIndex destination, AIOrderFlags order_flags)
+
−{
+
−	EnforcePrecondition(false, AIVehicle::IsValidVehicle(vehicle_id));
+
−	EnforcePrecondition(false, AreOrderFlagsValid(destination, order_flags));
+
−
+
−	return InsertOrder(vehicle_id, (AIOrder::OrderPosition)::Vehicle::Get(vehicle_id)->GetNumOrders(), destination, order_flags);
+
−}
+
−
+
−/* static */ bool AIOrder::AppendConditionalOrder(VehicleID vehicle_id, OrderPosition jump_to)
+
−{
+
−	EnforcePrecondition(false, AIVehicle::IsValidVehicle(vehicle_id));
+
−	EnforcePrecondition(false, IsValidVehicleOrder(vehicle_id, jump_to));
+
−
+
−	return InsertConditionalOrder(vehicle_id, (AIOrder::OrderPosition)::Vehicle::Get(vehicle_id)->GetNumOrders(), jump_to);
+
−}
+
−
+
−/* static */ bool AIOrder::InsertOrder(VehicleID vehicle_id, OrderPosition order_position, TileIndex destination, AIOrder::AIOrderFlags order_flags)
+
−{
+
−	/* IsValidVehicleOrder is not good enough because it does not allow appending. */
+
−	if (order_position == ORDER_CURRENT) order_position = AIOrder::ResolveOrderPosition(vehicle_id, order_position);
+
−
+
−	EnforcePrecondition(false, AIVehicle::IsValidVehicle(vehicle_id));
+
−	EnforcePrecondition(false, order_position >= 0 && order_position <= ::Vehicle::Get(vehicle_id)->GetNumOrders());
+
−	EnforcePrecondition(false, AreOrderFlagsValid(destination, order_flags));
+
−
+
−	Order order;
+
−	OrderType ot = (order_flags & AIOF_GOTO_NEAREST_DEPOT) ? OT_GOTO_DEPOT : ::GetOrderTypeByTile(destination);
+
−	switch (ot) {
+
−		case OT_GOTO_DEPOT: {
+
−			OrderDepotTypeFlags odtf = (OrderDepotTypeFlags)(ODTFB_PART_OF_ORDERS | ((order_flags & AIOF_SERVICE_IF_NEEDED) ? ODTFB_SERVICE : 0));
+
−			OrderDepotActionFlags odaf = (OrderDepotActionFlags)(ODATF_SERVICE_ONLY | ((order_flags & AIOF_STOP_IN_DEPOT) ? ODATFB_HALT : 0));
+
−			if (order_flags & AIOF_GOTO_NEAREST_DEPOT) odaf |= ODATFB_NEAREST_DEPOT;
+
−			OrderNonStopFlags onsf = (OrderNonStopFlags)((order_flags & AIOF_NON_STOP_INTERMEDIATE) ? ONSF_NO_STOP_AT_INTERMEDIATE_STATIONS : ONSF_STOP_EVERYWHERE);
+
−			if (order_flags & AIOF_GOTO_NEAREST_DEPOT) {
+
−				order.MakeGoToDepot(0, odtf, onsf, odaf);
+
−			} else {
+
−				/* Check explicitly if the order is to a station (for aircraft) or
+
−				 * to a depot (other vehicle types). */
+
−				if (::Vehicle::Get(vehicle_id)->type == VEH_AIRCRAFT) {
+
−					if (!::IsTileType(destination, MP_STATION)) return false;
+
−					order.MakeGoToDepot(::GetStationIndex(destination), odtf, onsf, odaf);
+
−				} else {
+
−					if (::IsTileType(destination, MP_STATION)) return false;
+
−					order.MakeGoToDepot(::GetDepotIndex(destination), odtf, onsf, odaf);
+
−				}
+
−			}
+
−			break;
+
−		}
+
−
+
−		case OT_GOTO_STATION:
+
−			order.MakeGoToStation(::GetStationIndex(destination));
+
−			order.SetLoadType((OrderLoadFlags)GB(order_flags, 5, 3));
+
−			order.SetUnloadType((OrderUnloadFlags)GB(order_flags, 2, 3));
+
−			order.SetStopLocation(OSL_PLATFORM_FAR_END);
+
−			break;
+
−
+
−		case OT_GOTO_WAYPOINT:
+
−			order.MakeGoToWaypoint(::GetStationIndex(destination));
+
−			break;
+
−
+
−		default:
+
−			return false;
+
−	}
+
−
+
−	order.SetNonStopType((OrderNonStopFlags)GB(order_flags, 0, 2));
+
−
+
−	return AIObject::DoCommand(0, vehicle_id | (order_position << 20), order.Pack(), CMD_INSERT_ORDER);
+
−}
+
−
+
−/* static */ bool AIOrder::InsertConditionalOrder(VehicleID vehicle_id, OrderPosition order_position, OrderPosition jump_to)
+
−{
+
−	/* IsValidVehicleOrder is not good enough because it does not allow appending. */
+
−	if (order_position == ORDER_CURRENT) order_position = AIOrder::ResolveOrderPosition(vehicle_id, order_position);
+
−
+
−	EnforcePrecondition(false, AIVehicle::IsValidVehicle(vehicle_id));
+
−	EnforcePrecondition(false, IsValidVehicleOrder(vehicle_id, jump_to));
+
−
+
−	Order order;
+
−	order.MakeConditional(jump_to);
+
−
+
−	return AIObject::DoCommand(0, vehicle_id | (order_position << 20), order.Pack(), CMD_INSERT_ORDER);
+
−}
+
−
+
−/* static */ bool AIOrder::RemoveOrder(VehicleID vehicle_id, OrderPosition order_position)
+
−{
+
−	order_position = AIOrder::ResolveOrderPosition(vehicle_id, order_position);
+
−
+
−	EnforcePrecondition(false, IsValidVehicleOrder(vehicle_id, order_position));
+
−
+
−	return AIObject::DoCommand(0, vehicle_id, order_position, CMD_DELETE_ORDER);
+
−}
+
−
+
−/* static */ bool AIOrder::SkipToOrder(VehicleID vehicle_id, OrderPosition next_order)
+
−{
+
−	next_order = AIOrder::ResolveOrderPosition(vehicle_id, next_order);
+
−
+
−	EnforcePrecondition(false, IsValidVehicleOrder(vehicle_id, next_order));
+
−
+
−	return AIObject::DoCommand(0, vehicle_id, next_order, CMD_SKIP_TO_ORDER);
+
−}
+
−
+
−/**
+
− * Callback handler as SetOrderFlags possibly needs multiple DoCommand calls
+
− * to be able to set all order flags correctly. As we need to wait till the
+
− * command has completed before we know the next bits to change we need to
+
− * call the function multiple times. Each time it'll reduce the difference
+
− * between the wanted and the current order.
+
− * @param instance The AI we are doing the callback for.
+
− */
+
−static void _DoCommandReturnSetOrderFlags(class AIInstance *instance)
+
−{
+
−	AIObject::SetLastCommandRes(AIOrder::_SetOrderFlags());
+
−	AIInstance::DoCommandReturn(instance);
+
−}
+
−
+
−/* static */ bool AIOrder::_SetOrderFlags()
+
−{
+
−	/* Make sure we don't go into an infinite loop */
+
−	int retry = AIObject::GetCallbackVariable(3) - 1;
+
−	if (retry < 0) {
+
−		DEBUG(ai, 0, "Possible infinite loop in SetOrderFlags() detected");
+
−		return false;
+
−	}
+
−	AIObject::SetCallbackVariable(3, retry);
+
−
+
−	VehicleID vehicle_id = (VehicleID)AIObject::GetCallbackVariable(0);
+
−	OrderPosition order_position = (OrderPosition)AIObject::GetCallbackVariable(1);
+
−	AIOrderFlags order_flags = (AIOrderFlags)AIObject::GetCallbackVariable(2);
+
−
+
−	order_position = AIOrder::ResolveOrderPosition(vehicle_id, order_position);
+
−
+
−	EnforcePrecondition(false, IsValidVehicleOrder(vehicle_id, order_position));
+
−	EnforcePrecondition(false, AreOrderFlagsValid(GetOrderDestination(vehicle_id, order_position), order_flags));
+
−
+
−	const Order *order = Vehicle::Get(vehicle_id)->GetOrder(order_position);
+
−
+
−	AIOrderFlags current = GetOrderFlags(vehicle_id, order_position);
+
−
+
−	if ((current & AIOF_NON_STOP_FLAGS) != (order_flags & AIOF_NON_STOP_FLAGS)) {
+
−		return AIObject::DoCommand(0, vehicle_id | (order_position << 20), (order_flags & AIOF_NON_STOP_FLAGS) << 4 | MOF_NON_STOP, CMD_MODIFY_ORDER, NULL, &_DoCommandReturnSetOrderFlags);
+
−	}
+
−
+
−	switch (order->GetType()) {
+
−		case OT_GOTO_DEPOT:
+
−			if ((current & AIOF_DEPOT_FLAGS) != (order_flags & AIOF_DEPOT_FLAGS)) {
+
−				uint data = DA_ALWAYS_GO;
+
−				if (order_flags & AIOF_SERVICE_IF_NEEDED) data = DA_SERVICE;
+
−				if (order_flags & AIOF_STOP_IN_DEPOT) data = DA_STOP;
+
−				return AIObject::DoCommand(0, vehicle_id | (order_position << 20), (data << 4) | MOF_DEPOT_ACTION, CMD_MODIFY_ORDER, NULL, &_DoCommandReturnSetOrderFlags);
+
−			}
+
−			break;
+
−
+
−		case OT_GOTO_STATION:
+
−			if ((current & AIOF_UNLOAD_FLAGS) != (order_flags & AIOF_UNLOAD_FLAGS)) {
+
−				return AIObject::DoCommand(0, vehicle_id | (order_position << 20), (order_flags & AIOF_UNLOAD_FLAGS) << 2 | MOF_UNLOAD, CMD_MODIFY_ORDER, NULL, &_DoCommandReturnSetOrderFlags);
+
−			}
+
−			if ((current & AIOF_LOAD_FLAGS) != (order_flags & AIOF_LOAD_FLAGS)) {
+
−				return AIObject::DoCommand(0, vehicle_id | (order_position << 20), (order_flags & AIOF_LOAD_FLAGS) >> 1 | MOF_LOAD, CMD_MODIFY_ORDER, NULL, &_DoCommandReturnSetOrderFlags);
+
−			}
+
−			break;
+
−
+
−		default: break;
+
−	}
+
−
+
−	assert(GetOrderFlags(vehicle_id, order_position) == order_flags);
+
−
+
−	return true;
+
−}
+
−
+
−/* static */ bool AIOrder::SetOrderFlags(VehicleID vehicle_id, OrderPosition order_position, AIOrder::AIOrderFlags order_flags)
+
−{
+
−	AIObject::SetCallbackVariable(0, vehicle_id);
+
−	AIObject::SetCallbackVariable(1, order_position);
+
−	AIObject::SetCallbackVariable(2, order_flags);
+
−	/* In case another client(s) change orders at the same time we could
+
−	 * end in an infinite loop. This stops that from happening ever. */
+
−	AIObject::SetCallbackVariable(3, 8);
+
−	return AIOrder::_SetOrderFlags();
+
−}
+
−
+
−/* static */ bool AIOrder::MoveOrder(VehicleID vehicle_id, OrderPosition order_position_move, OrderPosition order_position_target)
+
−{
+
−	order_position_move   = AIOrder::ResolveOrderPosition(vehicle_id, order_position_move);
+
−	order_position_target = AIOrder::ResolveOrderPosition(vehicle_id, order_position_target);
+
−
+
−	EnforcePrecondition(false, IsValidVehicleOrder(vehicle_id, order_position_move));
+
−	EnforcePrecondition(false, IsValidVehicleOrder(vehicle_id, order_position_target));
+
−
+
−	return AIObject::DoCommand(0, vehicle_id, order_position_move | (order_position_target << 16), CMD_MOVE_ORDER);
+
−}
+
−
+
−/* static */ bool AIOrder::CopyOrders(VehicleID vehicle_id, VehicleID main_vehicle_id)
+
−{
+
−	EnforcePrecondition(false, AIVehicle::IsValidVehicle(vehicle_id));
+
−	EnforcePrecondition(false, AIVehicle::IsValidVehicle(main_vehicle_id));
+
−
+
−	return AIObject::DoCommand(0, vehicle_id | CO_COPY << 30, main_vehicle_id, CMD_CLONE_ORDER);
+
−}
+
−
+
−/* static */ bool AIOrder::ShareOrders(VehicleID vehicle_id, VehicleID main_vehicle_id)
+
−{
+
−	EnforcePrecondition(false, AIVehicle::IsValidVehicle(vehicle_id));
+
−	EnforcePrecondition(false, AIVehicle::IsValidVehicle(main_vehicle_id));
+
−
+
−	return AIObject::DoCommand(0, vehicle_id | CO_SHARE << 30, main_vehicle_id, CMD_CLONE_ORDER);
+
−}
+
−
+
−/* static */ bool AIOrder::UnshareOrders(VehicleID vehicle_id)
+
−{
+
−	EnforcePrecondition(false, AIVehicle::IsValidVehicle(vehicle_id));
+
−
+
−	return AIObject::DoCommand(0, vehicle_id | CO_UNSHARE << 30, 0, CMD_CLONE_ORDER);
+
−}