rubidium@9500: /* $Id$ */
rubidium@9500: 
rubidium@9500: /** @file ai_order.cpp handles the functions of the AIOrder class */
rubidium@9500: 
rubidium@9500: #include "ai_order.hpp"
rubidium@9500: #include "ai_map.hpp"
rubidium@9500: #include "ai_vehicle.hpp"
rubidium@9500: #include "../../command.h"
rubidium@9500: #include "../../order.h"
glx@9624: #include "../../vehicle.h"
rubidium@9500: #include "../../depot.h"
rubidium@9599: #include "../../landscape.h"
rubidium@9500: #include "../../rail_map.h"
rubidium@9500: #include "../../road_map.h"
rubidium@9500: #include "../../station_map.h"
rubidium@9500: #include "../../water_map.h"
rubidium@9500: #include "../../waypoint.h"
rubidium@9500: 
rubidium@9500: /**
rubidium@9500:  * Gets the order type given a tile
rubidium@9500:  * @param t the tile to get the order from
rubidium@9500:  * @return the order type, or OT_END when there is no order
rubidium@9500:  */
rubidium@9500: static OrderType GetOrderTypeByTile(TileIndex t)
rubidium@9500: {
rubidium@9500: 	if (!::IsValidTile(t)) return OT_END;
rubidium@9500: 
rubidium@9500: 	switch (::GetTileType(t)) {
rubidium@9500: 		default: break;
rubidium@9500: 		case MP_STATION: return OT_GOTO_STATION; break;
rubidium@9500: 		case MP_WATER:   if (::IsShipDepot(t)) return OT_GOTO_DEPOT; break;
rubidium@9694: 		case MP_ROAD:    if (::GetRoadTileType(t) == ROAD_TILE_DEPOT) return OT_GOTO_DEPOT; break;
rubidium@9500: 		case MP_RAILWAY:
rubidium@9500: 			switch (::GetRailTileType(t)) {
rubidium@9500: 				case RAIL_TILE_DEPOT:    return OT_GOTO_DEPOT;
rubidium@9500: 				case RAIL_TILE_WAYPOINT: return OT_GOTO_WAYPOINT;
rubidium@9500: 				default: break;
rubidium@9500: 			}
rubidium@9500: 			break;
rubidium@9500: 	}
rubidium@9500: 
rubidium@9500: 	return OT_END;
rubidium@9500: }
rubidium@9500: 
rubidium@9500: /* static */ bool AIOrder::IsValidVehicleOrder(VehicleID vehicle_id, uint32 order_id)
rubidium@9500: {
rubidium@9500: 	return AIVehicle::IsValidVehicle(vehicle_id) && order_id < ::GetVehicle(vehicle_id)->num_orders;
rubidium@9500: }
rubidium@9500: 
rubidium@9500: /* static */ bool AIOrder::AreOrderFlagsValid(TileIndex destination, AIOrderFlags order_flags)
rubidium@9500: {
rubidium@9500: 	switch (::GetOrderTypeByTile(destination)) {
rubidium@9500: 		case OT_GOTO_DEPOT:    return (order_flags & ~(AIOF_NON_STOP | AIOF_SERVICE_IF_NEEDED)) == 0;
rubidium@9548: 		case OT_GOTO_STATION:  return (order_flags & ~(AIOF_NON_STOP | AIOF_TRANSFER | AIOF_UNLOAD | AIOF_FULL_LOAD)) == 0 && ((order_flags & AIOF_UNLOAD) == 0 || (order_flags & AIOF_FULL_LOAD) == 0);
rubidium@9500: 		case OT_GOTO_WAYPOINT: return (order_flags & ~(AIOF_NON_STOP)) == 0;
rubidium@9500: 		default:               return false;
rubidium@9500: 	}
rubidium@9500: }
rubidium@9500: 
rubidium@9500: int32 AIOrder::GetNumberOfOrders(VehicleID vehicle_id)
rubidium@9500: {
rubidium@9500: 	return AIVehicle::IsValidVehicle(vehicle_id) ? ::GetVehicle(vehicle_id)->num_orders : -1;
rubidium@9500: }
rubidium@9500: 
rubidium@9500: TileIndex AIOrder::GetOrderDestination(VehicleID vehicle_id, uint32 order_id)
rubidium@9500: {
rubidium@9500: 	if (!AIOrder::IsValidVehicleOrder(vehicle_id, order_id)) return INVALID_TILE;
rubidium@9500: 
rubidium@9500: 	Order *order = ::GetVehicle(vehicle_id)->orders;
rubidium@9500: 	for (uint i = 0; i < order_id; i++) order = order->next;
rubidium@9500: 
rubidium@9500: 	switch (order->type) {
rubidium@9500: 		case OT_GOTO_DEPOT:    return ::GetDepot(order->dest)->xy;
rubidium@9500: 		case OT_GOTO_STATION:  return ::GetStation(order->dest)->xy;
rubidium@9500: 		case OT_GOTO_WAYPOINT: return ::GetWaypoint(order->dest)->xy;
rubidium@9500: 		default:               return INVALID_TILE;
rubidium@9500: 	}
rubidium@9500: }
rubidium@9500: 
rubidium@9500: AIOrder::AIOrderFlags AIOrder::GetOrderFlags(VehicleID vehicle_id, uint32 order_id)
rubidium@9500: {
rubidium@9500: 	if (!AIOrder::IsValidVehicleOrder(vehicle_id, order_id)) return AIOF_INVALID;
rubidium@9500: 
rubidium@9500: 	Order *order = ::GetVehicle(vehicle_id)->orders;
rubidium@9500: 	for (uint i = 0; i < order_id; i++) order = order->next;
rubidium@9500: 
rubidium@9500: 	return (AIOrder::AIOrderFlags)order->flags;
rubidium@9500: }
rubidium@9500: 
rubidium@9500: bool AIOrder::AppendOrder(VehicleID vehicle_id, TileIndex destination, AIOrderFlags order_flags)
rubidium@9500: {
rubidium@9500: 	if (!AIVehicle::IsValidVehicle(vehicle_id)) return false;
rubidium@9500: 	return this->InsertOrder(vehicle_id, GetVehicle(vehicle_id)->num_orders, destination, order_flags);
rubidium@9500: }
rubidium@9500: 
rubidium@9500: bool AIOrder::InsertOrder(VehicleID vehicle_id, uint32 order_id, TileIndex destination, AIOrder::AIOrderFlags order_flags)
rubidium@9500: {
rubidium@9534: 	/* IsValidVehicleOrder is not good enough because it does not allow appending. */
rubidium@9534: 	if (!AIVehicle::IsValidVehicle(vehicle_id) || order_id > ::GetVehicle(vehicle_id)->num_orders ||
rubidium@9500: 		!this->AreOrderFlagsValid(destination, order_flags)) return false;
rubidium@9500: 
rubidium@9500: 	Order order;
rubidium@9500: 	order.type  = ::GetOrderTypeByTile(destination);
rubidium@9500: 	order.flags = order_flags;
rubidium@9500: 	switch (order.type) {
rubidium@9534: 		case OT_GOTO_DEPOT:    order.dest = ::GetDepotByTile(destination)->index; break;
rubidium@9534: 		case OT_GOTO_STATION:  order.dest = ::GetStationIndex(destination);       break;
rubidium@9534: 		case OT_GOTO_WAYPOINT: order.dest = ::GetWaypointIndex(destination);      break;
rubidium@9500: 		default: NOT_REACHED(); return false;
rubidium@9500: 	}
rubidium@9500: 
rubidium@9500: 	return this->DoCommand(0, vehicle_id | (order_id << 16), PackOrder(&order), CMD_INSERT_ORDER);
rubidium@9500: }
rubidium@9500: 
rubidium@9500: bool AIOrder::RemoveOrder(VehicleID vehicle_id, uint32 order_id)
rubidium@9500: {
rubidium@9500: 	if (!IsValidVehicleOrder(vehicle_id, order_id)) return false;
rubidium@9500: 
rubidium@9500: 	return this->DoCommand(0, vehicle_id, order_id, CMD_DELETE_ORDER);
rubidium@9500: }
rubidium@9500: 
rubidium@9500: bool AIOrder::ChangeOrder(VehicleID vehicle_id, uint32 order_id, AIOrder::AIOrderFlags order_flags)
rubidium@9500: {
rubidium@9500: 	if (!IsValidVehicleOrder(vehicle_id, order_id) ||
rubidium@9500: 		!this->AreOrderFlagsValid(GetOrderDestination(vehicle_id, order_id), order_flags)) return false;
rubidium@9500: 
rubidium@9548: 	for (;;) {
rubidium@9548: 		/* Loop as long as there is a difference between the requested and
rubidium@9548: 		 * the current orders of the vehicle. */
rubidium@9548: 		AIOrderFlags current = this->GetOrderFlags(vehicle_id, order_id);
rubidium@9548: 		AIOrderFlags diff = current ^ order_flags;
rubidium@9548: 		if (diff == 0) return true;
rubidium@9548: 
rubidium@9548: 		bool res = this->DoCommand(0, vehicle_id | (order_id << 16), FIND_FIRST_BIT(diff), CMD_MODIFY_ORDER);
rubidium@9548: 		if (!res) return false;
rubidium@9548: 	}
rubidium@9500: }
rubidium@9500: 
rubidium@9500: bool AIOrder::CopyOrders(VehicleID vehicle_id, VehicleID main_vehicle_id)
rubidium@9500: {
rubidium@9500: 	if (!AIVehicle::IsValidVehicle(vehicle_id) || !AIVehicle::IsValidVehicle(main_vehicle_id)) return false;
rubidium@9500: 
rubidium@9500: 	return this->DoCommand(0, vehicle_id | (main_vehicle_id << 16), CO_COPY, CMD_CLONE_ORDER);
rubidium@9500: }
rubidium@9500: 
rubidium@9500: bool AIOrder::ShareOrders(VehicleID vehicle_id, VehicleID main_vehicle_id)
rubidium@9500: {
rubidium@9500: 	if (!AIVehicle::IsValidVehicle(vehicle_id) || !AIVehicle::IsValidVehicle(main_vehicle_id)) return false;
rubidium@9500: 
rubidium@9500: 	return this->DoCommand(0, vehicle_id | (main_vehicle_id << 16), CO_SHARE, CMD_CLONE_ORDER);
rubidium@9500: }
rubidium@9500: 
rubidium@9500: bool AIOrder::UnshareOrders(VehicleID vehicle_id)
rubidium@9500: {
rubidium@9500: 	if (!AIVehicle::IsValidVehicle(vehicle_id)) return false;
rubidium@9500: 
rubidium@9500: 	return this->DoCommand(0, vehicle_id, CO_UNSHARE, CMD_CLONE_ORDER);
rubidium@9500: }