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/* $Id$ */

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/** @file order_cmd.cpp */

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#include "stdafx.h"

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#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 "depot.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 "table/strings.h"

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

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 * be any of them

    34

 */

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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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    39

TileIndex _backup_orders_tile;

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BackuppedOrders _backup_orders_data;

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    42

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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    59

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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}

    83

    84

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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    90

void Order::MakeDummy()

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{

    92

	this->type = OT_DUMMY;

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	this->flags = 0;

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}

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   103

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

   104

{

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	this->refit_cargo = cargo;

   106

	this->refit_subtype = subtype;

   107

}

   108

   109

void Order::FreeChain()

   110

{

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

   112

	delete this;

   113

}

   114

   115

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

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{

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	return

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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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}

   122

   123

static bool HasOrderPoolFree(uint amount)

   124

{

   125

	const Order *order;

   126

   127

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

   128

	if (_Order_pool.CanAllocateMoreBlocks()) return true;

   129

   130

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

   131

   132

	return false;

   133

}

   134

   135

uint32 Order::Pack() const

   136

{

   137

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

   138

}

   139

   140

Order::Order(uint32 packed)

   141

{

   142

	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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   152

void Order::ConvertFromOldSavegame()

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{

   154

	/* First handle non-stop, because those bits are going to be reused. */

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	if (_patches.sg_new_nonstop) {

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		this->SetNonStopType((this->flags & 0x08) ? ONSF_NO_STOP_AT_ANY_STATION : ONSF_NO_STOP_AT_INTERMEDIATE_STATIONS);

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	} else {

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		this->SetNonStopType((this->flags & 0x08) ? ONSF_NO_STOP_AT_INTERMEDIATE_STATIONS : ONSF_STOP_EVERYWHERE);

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	}

   160

   161

	switch (this->GetType()) {

   162

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

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		case OT_GOTO_DEPOT: case OT_GOTO_STATION: case OT_LOADING: break;

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		default: return;

   165

	}

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   167

	/* Then the load/depot action flags because those bits are going to be reused too

   168

	 * and they reuse the non-stop bits. */

   169

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

   170

		if ((this->flags & 4) == 0) {

   171

			this->SetLoadType(OLF_LOAD_IF_POSSIBLE);

   172

		} else {

   173

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

   174

		}

   175

	} else {

   176

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

   177

	}

   178

   179

	/* Finally fix the unload/depot type flags. */

   180

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

   181

		uint t = ((this->flags & 1) == 0) ? OUF_UNLOAD_IF_POSSIBLE : OUFB_TRANSFER;

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		if ((this->flags & 2) != 0) t |= OUFB_UNLOAD;

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		this->SetUnloadType((OrderUnloadFlags)t);

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   185

		if ((this->GetUnloadType() & (OUFB_UNLOAD | OUFB_TRANSFER)) == (OUFB_UNLOAD | OUFB_TRANSFER)) {

   186

			this->SetUnloadType(OUFB_TRANSFER);

   187

			this->SetLoadType(OLFB_NO_LOAD);

   188

		}

   189

	} else {

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		uint t = ((this->flags & 6) == 6) ? ODTFB_SERVICE : ODTF_MANUAL;

   191

		if ((this->flags & 2) != 0) t |= ODTFB_PART_OF_ORDERS;

   192

		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() && (order.GetLoadType() != 0 || order.GetUnloadType() != 0 || order.GetDestination() != 0)) {

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		order.MakeDummy();

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	}

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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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{

   245

	Order temp_order;

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	temp_order = *order1;

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	order1->AssignOrder(*order2);

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	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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	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()) {

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		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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/** 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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{

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	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);

   315

   316

	if (!IsValidVehicleID(veh)) return CMD_ERROR;

   317

   318

	v = GetVehicle(veh);

   319

   320

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

   321

   322

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

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	 * and has the correct flags if any */

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	switch (new_order.GetType()) {

   325

		case OT_GOTO_STATION: {

   326

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

   327

   328

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

   329

   330

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

   331

				return CMD_ERROR;

   332

			}

   333

   334

			switch (v->type) {

   335

				case VEH_TRAIN:

   336

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

   337

					break;

   338

   339

				case VEH_ROAD:

   340

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

   341

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

   342

					} else {

   343

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

   344

					}

   345

					break;

   346

   347

				case VEH_SHIP:

   348

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

   349

					break;

   350

   351

				case VEH_AIRCRAFT:

   352

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

   353

						return CMD_ERROR;

   354

					}

   355

					break;

   356

   357

				default: return CMD_ERROR;

   358

			}

   359

   360

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

   361

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

   362

   363

			/* Full load and unload are mutual exclusive. */

   364

			if ((new_order.GetLoadType() & OLFB_FULL_LOAD) && (new_order.GetUnloadType() & OUFB_UNLOAD)) return CMD_ERROR;

   365

   366

			/* Filter invalid load/unload types. */

   367

			switch (new_order.GetLoadType()) {

   368

				case OLF_LOAD_IF_POSSIBLE: case OLFB_FULL_LOAD: case OLF_FULL_LOAD_ANY: break;

   369

				default: return CMD_ERROR;

   370

			}

   371

			if (new_order.GetUnloadType() & ~(OUFB_UNLOAD | OUFB_TRANSFER)) return CMD_ERROR;

   372

			break;

   373

		}

   374

   375

		case OT_GOTO_DEPOT: {

   379

   410

				}

   411

			} else {

   413

			}

   414

   415

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

   416

			if (new_order.GetDepotOrderType() & ~ODTFB_PART_OF_ORDERS) return CMD_ERROR;

   418

			break;

   419

		}

   420

   421

		case OT_GOTO_WAYPOINT: {

   422

   423

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

   424

   425

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

   426

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

   427

   428

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

   429

   430

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

   431

			 * [non-stop]

   432

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

   433

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

   434

			break;

   435

		}

   436

   445

		default: return CMD_ERROR;

   446

	}

   447

   448

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

   449

   450

	if (!HasOrderPoolFree(1)) return_cmd_error(STR_8831_NO_MORE_SPACE_FOR_ORDERS);

   451

   452

	if (v->type == VEH_SHIP && IsHumanPlayer(v->owner) && _patches.pathfinder_for_ships != VPF_NPF) {

   453

		/* Make sure the new destination is not too far away from the previous */

   454

		const Order *prev = NULL;

   455

		uint n = 0;

   456

   457

		/* Find the last goto station or depot order before the insert location.

   458

		 * If the order is to be inserted at the beginning of the order list this

   459

		 * finds the last order in the list. */

   460

		for (const Order *o = v->orders; o != NULL; o = o->next) {

   461

			if (o->IsType(OT_GOTO_STATION) || o->IsType(OT_GOTO_DEPOT)) prev = o;

   462

			if (++n == sel_ord && prev != NULL) break;

   463

		}

   464

		if (prev != NULL) {

   465

			uint dist = DistanceManhattan(

   466

				GetOrderLocation(*prev),

   467

				GetOrderLocation(new_order)

   468

			);

   469

			if (dist >= 130) {

   470

				return_cmd_error(STR_0210_TOO_FAR_FROM_PREVIOUS_DESTINATIO);

   471

			}

   472

		}

   473

	}

   474

   475

	if (flags & DC_EXEC) {

   476

		Vehicle *u;

   477

		Order *new_o = new Order();

   478

		new_o->AssignOrder(new_order);

   479

   480

		/* Create new order and link in list */

   481

		if (v->orders == NULL) {

   482

			v->orders = new_o;

   483

		} else {

   484

			/* Try to get the previous item (we are inserting above the

   485

			    selected) */

   486

			Order *order = GetVehicleOrder(v, sel_ord - 1);

   487

   488

			if (order == NULL && GetVehicleOrder(v, sel_ord) != NULL) {