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/* $Id$ */

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/** @file order_cmd.cpp Handling of orders. */

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#include "stdafx.h"

     6

#include "openttd.h"

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#include "order_base.h"

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#include "order_func.h"

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#include "airport.h"

    10

#include "order_base.h"

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#include "waypoint.h"

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#include "command_func.h"

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#include "player_func.h"

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#include "news_func.h"

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#include "saveload.h"

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#include "vehicle_gui.h"

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#include "cargotype.h"

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#include "aircraft.h"

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#include "strings_func.h"

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#include "core/alloc_func.hpp"

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#include "functions.h"

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#include "window_func.h"

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#include "settings_type.h"

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#include "string_func.h"

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#include "newgrf_cargo.h"

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#include "timetable.h"

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#include "vehicle_func.h"

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#include "oldpool_func.h"

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#include "depot_base.h"

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#include "table/strings.h"

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/* DestinationID must be at least as large as every these below, because it can

    34

 * be any of them

    35

 */

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assert_compile(sizeof(DestinationID) >= sizeof(DepotID));

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assert_compile(sizeof(DestinationID) >= sizeof(WaypointID));

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assert_compile(sizeof(DestinationID) >= sizeof(StationID));

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TileIndex _backup_orders_tile;

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BackuppedOrders _backup_orders_data;

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DEFINE_OLD_POOL_GENERIC(Order, Order);

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void Order::Free()

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{

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	this->type  = OT_NOTHING;

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	this->flags = 0;

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	this->dest  = 0;

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	this->next  = NULL;

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}

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void Order::MakeGoToStation(StationID destination)

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{

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	this->type = OT_GOTO_STATION;

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	this->flags = 0;

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	this->dest = destination;

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}

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    60

void Order::MakeGoToDepot(DepotID destination, OrderDepotTypeFlags order, CargoID cargo, byte subtype)

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{

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	this->type = OT_GOTO_DEPOT;

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	this->flags = 0;

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	this->SetDepotOrderType(order);

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	if (!(order & ODTFB_PART_OF_ORDERS)) {

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		this->SetNonStopType(ONSF_NO_STOP_AT_INTERMEDIATE_STATIONS);

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	}

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	this->dest = destination;

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	this->SetRefit(cargo, subtype);

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}

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void Order::MakeGoToWaypoint(WaypointID destination)

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{

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	this->type = OT_GOTO_WAYPOINT;

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	this->flags = 0;

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	this->dest = destination;

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}

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void Order::MakeLoading(bool ordered)

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{

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	this->type = OT_LOADING;

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	if (!ordered) this->flags = 0;

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}

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void Order::MakeLeaveStation()

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{

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	this->type = OT_LEAVESTATION;

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	this->flags = 0;

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}

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    91

void Order::MakeDummy()

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{

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	this->type = OT_DUMMY;

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	this->flags = 0;

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}

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    97

void Order::MakeConditional(VehicleOrderID order)

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{

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	this->type = OT_CONDITIONAL;

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	this->flags = order;

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	this->dest = 0;

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}

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   104

void Order::SetRefit(CargoID cargo, byte subtype)

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{

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	this->refit_cargo = cargo;

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	this->refit_subtype = subtype;

   108

}

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   110

void Order::FreeChain()

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{

   112

	if (next != NULL) next->FreeChain();

   113

	delete this;

   114

}

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   116

bool Order::Equals(const Order &other) const

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{

   118

	return

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			this->type  == other.type &&

   120

			this->flags == other.flags &&

   121

			this->dest  == other.dest;

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}

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   124

static bool HasOrderPoolFree(uint amount)

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{

   126

	const Order *order;

   127

   128

	/* There is always room if not all blocks in the pool are reserved */

   129

	if (_Order_pool.CanAllocateMoreBlocks()) return true;

   130

   131

	FOR_ALL_ORDERS(order) if (!order->IsValid() && --amount == 0) return true;

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   133

	return false;

   134

}

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   136

uint32 Order::Pack() const

   137

{

   138

	return this->dest << 16 | this->flags << 8 | this->type;

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}

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   141

Order::Order(uint32 packed)

   142

{

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	this->type    = (OrderType)GB(packed,  0,  8);

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	this->flags   = GB(packed,  8,  8);

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	this->dest    = GB(packed, 16, 16);

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	this->next    = NULL;

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	this->refit_cargo   = CT_NO_REFIT;

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	this->refit_subtype = 0;

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	this->wait_time     = 0;

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	this->travel_time   = 0;

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}

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   153

void Order::ConvertFromOldSavegame()

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{

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	uint8 old_flags = this->flags;

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	this->flags = 0;

   157

   158

	/* First handle non-stop */

   159

	if (_settings_client.gui.sg_new_nonstop) {

   160

		/* OFB_NON_STOP */

   161

		this->SetNonStopType((old_flags & 8) ? ONSF_NO_STOP_AT_ANY_STATION : ONSF_NO_STOP_AT_INTERMEDIATE_STATIONS);

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	} else {

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		this->SetNonStopType((old_flags & 8) ? ONSF_NO_STOP_AT_INTERMEDIATE_STATIONS : ONSF_STOP_EVERYWHERE);

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	}

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   166

	switch (this->GetType()) {

   167

		/* Only a few types need the other savegame conversions. */

   168

		case OT_GOTO_DEPOT: case OT_GOTO_STATION: case OT_LOADING: break;

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		default: return;

   170

	}

   171

   172

	if (this->GetType() != OT_GOTO_DEPOT) {

   173

		/* Then the load flags */

   174

		if ((old_flags & 2) != 0) { // OFB_UNLOAD

   175

			this->SetLoadType(OLFB_NO_LOAD);

   176

		} else if ((old_flags & 4) == 0) { // !OFB_FULL_LOAD

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			this->SetLoadType(OLF_LOAD_IF_POSSIBLE);

   178

		} else {

   179

			this->SetLoadType(_settings_client.gui.sg_full_load_any ? OLF_FULL_LOAD_ANY : OLFB_FULL_LOAD);

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		}

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   182

		/* Finally fix the unload flags */

   183

		if ((old_flags & 1) != 0) { // OFB_TRANSFER

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			this->SetUnloadType(OUFB_TRANSFER);

   185

		} else if ((old_flags & 2) != 0) { // OFB_UNLOAD

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			this->SetUnloadType(OUFB_UNLOAD);

   187

		} else {

   188

			this->SetUnloadType(OUF_UNLOAD_IF_POSSIBLE);

   189

		}

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	} else {

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		/* Then the depot action flags */

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		this->SetDepotActionType(((old_flags & 6) == 4) ? ODATFB_HALT : ODATF_SERVICE_ONLY);

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   194

		/* Finally fix the depot type flags */

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		uint t = ((old_flags & 6) == 6) ? ODTFB_SERVICE : ODTF_MANUAL;

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		if ((old_flags & 2) != 0) t |= ODTFB_PART_OF_ORDERS;

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		this->SetDepotOrderType((OrderDepotTypeFlags)t);

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	}

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}

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/**

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 *

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 * Unpacks a order from savegames with version 4 and lower

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 *

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 */

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static Order UnpackVersion4Order(uint16 packed)

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{

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	return Order(GB(packed, 8, 8) << 16 | GB(packed, 4, 4) << 8 | GB(packed, 0, 4));

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}

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/**

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 *

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 * Unpacks a order from savegames made with TTD(Patch)

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 *

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 */

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Order UnpackOldOrder(uint16 packed)

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{

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	Order order = UnpackVersion4Order(packed);

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	/*

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	 * Sanity check

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	 * TTD stores invalid orders as OT_NOTHING with non-zero flags/station

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	 */

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	if (!order.IsValid() && packed != 0) order.MakeDummy();

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	return order;

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}

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/**

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 *

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 * Updates the widgets of a vehicle which contains the order-data

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 *

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 */

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void InvalidateVehicleOrder(const Vehicle *v)

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{

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	InvalidateWindow(WC_VEHICLE_VIEW,      v->index);

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	InvalidateWindow(WC_VEHICLE_ORDERS,    v->index);

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	InvalidateWindow(WC_VEHICLE_TIMETABLE, v->index);

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}

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/**

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 *

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 * Swap two orders

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 *

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 */

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static void SwapOrders(Order *order1, Order *order2)

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{

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	Order temp_order;

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	temp_order = *order1;

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	order1->AssignOrder(*order2);

   252

	order1->next = order2->next;

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	order2->AssignOrder(temp_order);

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	order2->next = temp_order.next;

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}

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/**

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 *

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 * Assign data to an order (from an other order)

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 *   This function makes sure that the index is maintained correctly

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 *

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 */

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void Order::AssignOrder(const Order &other)

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{

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	this->type  = other.type;

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	this->flags = other.flags;

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	this->dest  = other.dest;

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	this->refit_cargo   = other.refit_cargo;

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	this->refit_subtype = other.refit_subtype;

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   272

	this->wait_time   = other.wait_time;

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	this->travel_time = other.travel_time;

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}

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/**

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 * Delete all news items regarding defective orders about a vehicle

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 * This could kill still valid warnings (for example about void order when just

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 * another order gets added), but assume the player will notice the problems,

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 * when (s)he's changing the orders.

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 */

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static void DeleteOrderWarnings(const Vehicle* v)

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{

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	DeleteVehicleNews(v->index, STR_TRAIN_HAS_TOO_FEW_ORDERS  + v->type * 4);

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	DeleteVehicleNews(v->index, STR_TRAIN_HAS_VOID_ORDER      + v->type * 4);

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	DeleteVehicleNews(v->index, STR_TRAIN_HAS_DUPLICATE_ENTRY + v->type * 4);

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	DeleteVehicleNews(v->index, STR_TRAIN_HAS_INVALID_ENTRY   + v->type * 4);

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}

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static TileIndex GetOrderLocation(const Order& o)

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{

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	switch (o.GetType()) {

   295

		default: NOT_REACHED();

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		case OT_GOTO_STATION: return GetStation(o.GetDestination())->xy;

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		case OT_GOTO_DEPOT:   return GetDepot(o.GetDestination())->xy;

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	}

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}

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static uint GetOrderDistance(const Order *prev, const Order *cur, const Vehicle *v, int conditional_depth = 0)

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{

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	if (cur->IsType(OT_CONDITIONAL)) {

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		if (conditional_depth > v->num_orders) return 0;

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   306

		conditional_depth++;

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		return max(GetOrderDistance(prev, &v->orders[cur->GetConditionSkipToOrder()], v, conditional_depth),

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				GetOrderDistance(prev, (prev + 1 == &v->orders[v->num_orders]) ? v->orders : (prev + 1), v, conditional_depth));

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	}

   310

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	return DistanceManhattan(GetOrderLocation(*prev), GetOrderLocation(*cur));

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}

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/** Add an order to the orderlist of a vehicle.

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 * @param tile unused

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 * @param flags operation to perform

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 * @param p1 various bitstuffed elements

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 * - p1 = (bit  0 - 15) - ID of the vehicle

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 * - p1 = (bit 16 - 31) - the selected order (if any). If the last order is given,

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 *                        the order will be inserted before that one

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 *                        only the first 8 bits used currently (bit 16 - 23) (max 255)

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 * @param p2 packed order to insert

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 */

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CommandCost CmdInsertOrder(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)

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{

   326

	Vehicle *v;

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	VehicleID veh   = GB(p1,  0, 16);

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	VehicleOrderID sel_ord = GB(p1, 16, 16);

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	Order new_order(p2);

   330

   331

	if (!IsValidVehicleID(veh)) return CMD_ERROR;

   332

   333

	v = GetVehicle(veh);

   334

   335

	if (!CheckOwnership(v->owner)) return CMD_ERROR;

   336

   337

	/* Check if the inserted order is to the correct destination (owner, type),

   338

	 * and has the correct flags if any */

   339

	switch (new_order.GetType()) {

   340

		case OT_GOTO_STATION: {

   341

			if (!IsValidStationID(new_order.GetDestination())) return CMD_ERROR;

   342

   343

			const Station *st = GetStation(new_order.GetDestination());

   344

   345

			if (st->owner != OWNER_NONE && !CheckOwnership(st->owner)) {

   346

				return CMD_ERROR;

   347

			}

   348

   349

			switch (v->type) {

   350

				case VEH_TRAIN:

   351

					if (!(st->facilities & FACIL_TRAIN)) return CMD_ERROR;

   352

					break;

   353

   354

				case VEH_ROAD:

   355

					if (IsCargoInClass(v->cargo_type, CC_PASSENGERS)) {

   356

						if (!(st->facilities & FACIL_BUS_STOP)) return CMD_ERROR;

   357

					} else {

   358

						if (!(st->facilities & FACIL_TRUCK_STOP)) return CMD_ERROR;

   359

					}

   360

					break;

   361

   362

				case VEH_SHIP:

   363

					if (!(st->facilities & FACIL_DOCK)) return CMD_ERROR;

   364

					break;

   365

   366

				case VEH_AIRCRAFT:

   367

					if (!(st->facilities & FACIL_AIRPORT) || !CanAircraftUseStation(v->engine_type, st)) {

   368

						return CMD_ERROR;

   369

					}

   370

					break;

   371

   372

				default: return CMD_ERROR;

   373

			}

   374

   375

			/* Non stop not allowed for non-trains. */

   376

			if (new_order.GetNonStopType() != ONSF_STOP_EVERYWHERE && v->type != VEH_TRAIN && v->type != VEH_ROAD) return CMD_ERROR;

   377

   380

   381

			/* Filter invalid load/unload types. */

   382

			switch (new_order.GetLoadType()) {

   383

				case OLF_LOAD_IF_POSSIBLE: case OLFB_FULL_LOAD: case OLF_FULL_LOAD_ANY: case OLFB_NO_LOAD: break;

   384

				default: return CMD_ERROR;

   385

			}

   386

			switch (new_order.GetUnloadType()) {

   387

				case OUF_UNLOAD_IF_POSSIBLE: case OUFB_UNLOAD: case OUFB_TRANSFER: case OUFB_NO_UNLOAD: break;

   388

				default: return CMD_ERROR;

   389

			}

   390

			break;

   391

		}

   392

   393

		case OT_GOTO_DEPOT: {

   394

			if (new_order.GetDepotActionType() != ODATFB_NEAREST_DEPOT) {

   395

				if (v->type == VEH_AIRCRAFT) {

   396

					if (!IsValidStationID(new_order.GetDestination())) return CMD_ERROR;

   397

   398

					const Station *st = GetStation(new_order.GetDestination());

   399

   400

					if (!CheckOwnership(st->owner) ||

   401

							!(st->facilities & FACIL_AIRPORT) ||

   402

							st->Airport()->nof_depots == 0 ||

   403

							!CanAircraftUseStation(v->engine_type, st)) {

   404

						return CMD_ERROR;

   405

					}

   406

				} else {

   407

					if (!IsValidDepotID(new_order.GetDestination())) return CMD_ERROR;

   408

   409

					const Depot *dp = GetDepot(new_order.GetDestination());

   410

   411

					if (!CheckOwnership(GetTileOwner(dp->xy))) return CMD_ERROR;

   412

   413

					switch (v->type) {

   414

						case VEH_TRAIN:

   415

							if (!IsRailDepotTile(dp->xy)) return CMD_ERROR;

   416

							break;

   417

   418

						case VEH_ROAD:

   419

							if (!IsRoadDepotTile(dp->xy)) return CMD_ERROR;

   420

							break;

   421

   422

						case VEH_SHIP:

   423

							if (!IsShipDepotTile(dp->xy)) return CMD_ERROR;

   424

							break;

   425

   426

						default: return CMD_ERROR;

   427

					}

   428

				}

   429

			} else {

   430

				if (!IsPlayerBuildableVehicleType(v)) return CMD_ERROR;

   431

			}

   432

   433

			if (new_order.GetNonStopType() != ONSF_STOP_EVERYWHERE && v->type != VEH_TRAIN && v->type != VEH_ROAD) return CMD_ERROR;

   434

			if (new_order.GetDepotOrderType() & ~(ODTFB_PART_OF_ORDERS | ((new_order.GetDepotOrderType() & ODTFB_PART_OF_ORDERS) != 0 ? ODTFB_SERVICE : 0))) return CMD_ERROR;

   435

			if (new_order.GetDepotActionType() & ~ODATFB_NEAREST_DEPOT) return CMD_ERROR;

   436

			break;

   437

		}

   438

   439

		case OT_GOTO_WAYPOINT: {

   440

			if (v->type != VEH_TRAIN) return CMD_ERROR;

   441

   442

			if (!IsValidWaypointID(new_order.GetDestination())) return CMD_ERROR;

   443

			const Waypoint *wp = GetWaypoint(new_order.GetDestination());

   444

   445

			if (!CheckOwnership(GetTileOwner(wp->xy))) return CMD_ERROR;

   446

   447

			/* Order flags can be any of the following for waypoints:

   448

			 * [non-stop]

   449

			 * non-stop orders (if any) are only valid for trains */

   450

			if (new_order.GetNonStopType() != ONSF_STOP_EVERYWHERE && v->type != VEH_TRAIN) return CMD_ERROR;

   451

			break;

   452

		}

   453

   454

		case OT_CONDITIONAL: {

   458

   479

		} break;

   480

   481

		default: return CMD_ERROR;

   482

	}

   483

   484

	if (sel_ord > v->num_orders) return CMD_ERROR;