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OpenTTD/src/saveload/order_sl.cpp

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/*
* 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 order_sl.cpp Code handling saving and loading of orders */
#include "../stdafx.h"
#include "saveload.h"
#include "compat/order_sl_compat.h"
#include "saveload_internal.h"
#include "../order_backup.h"
#include "../settings_type.h"
#include "../network/network.h"
#include "../safeguards.h"
/**
* Converts this order from an old savegame's version;
* it moves all bits to the new location.
*/
void Order::ConvertFromOldSavegame()
{
uint8_t old_flags = this->flags;
this->flags = 0;
/* First handle non-stop - use value from savegame if possible, else use value from config file */
if (_settings_client.gui.sg_new_nonstop || (IsSavegameVersionBefore(SLV_22) && _savegame_type != SGT_TTO && _savegame_type != SGT_TTD && _settings_client.gui.new_nonstop)) {
/* OFB_NON_STOP */
this->SetNonStopType((old_flags & 8) ? ONSF_NO_STOP_AT_ANY_STATION : ONSF_NO_STOP_AT_INTERMEDIATE_STATIONS);
} else {
this->SetNonStopType((old_flags & 8) ? ONSF_NO_STOP_AT_INTERMEDIATE_STATIONS : ONSF_STOP_EVERYWHERE);
}
switch (this->GetType()) {
/* Only a few types need the other savegame conversions. */
case OT_GOTO_DEPOT: case OT_GOTO_STATION: case OT_LOADING: break;
default: return;
}
if (this->GetType() != OT_GOTO_DEPOT) {
/* Then the load flags */
if ((old_flags & 2) != 0) { // OFB_UNLOAD
this->SetLoadType(OLFB_NO_LOAD);
} else if ((old_flags & 4) == 0) { // !OFB_FULL_LOAD
this->SetLoadType(OLF_LOAD_IF_POSSIBLE);
} else {
/* old OTTD versions stored full_load_any in config file - assume it was enabled when loading */
this->SetLoadType(_settings_client.gui.sg_full_load_any || IsSavegameVersionBefore(SLV_22) ? OLF_FULL_LOAD_ANY : OLFB_FULL_LOAD);
}
if (this->IsType(OT_GOTO_STATION)) this->SetStopLocation(OSL_PLATFORM_FAR_END);
/* Finally fix the unload flags */
if ((old_flags & 1) != 0) { // OFB_TRANSFER
this->SetUnloadType(OUFB_TRANSFER);
} else if ((old_flags & 2) != 0) { // OFB_UNLOAD
this->SetUnloadType(OUFB_UNLOAD);
} else {
this->SetUnloadType(OUF_UNLOAD_IF_POSSIBLE);
}
} else {
/* Then the depot action flags */
this->SetDepotActionType(((old_flags & 6) == 4) ? ODATFB_HALT : ODATF_SERVICE_ONLY);
/* Finally fix the depot type flags */
uint t = ((old_flags & 6) == 6) ? ODTFB_SERVICE : ODTF_MANUAL;
if ((old_flags & 2) != 0) t |= ODTFB_PART_OF_ORDERS;
this->SetDepotOrderType((OrderDepotTypeFlags)t);
}
}
/**
* Unpacks a order from savegames with version 4 and lower
* @param packed packed order
* @return unpacked order
*/
static Order UnpackVersion4Order(uint16_t packed)
{
return Order(GB(packed, 0, 4), GB(packed, 4, 4), GB(packed, 8, 8));
}
/**
* Unpacks a order from savegames made with TTD(Patch)
* @param packed packed order
* @return unpacked order
*/
Order UnpackOldOrder(uint16_t packed)
{
Order order = UnpackVersion4Order(packed);
/*
* Sanity check
* TTD stores invalid orders as OT_NOTHING with non-zero flags/station
*/
if (order.IsType(OT_NOTHING) && packed != 0) order.MakeDummy();
return order;
}
SaveLoadTable GetOrderDescription()
{
static const SaveLoad _order_desc[] = {
SLE_VAR(Order, type, SLE_UINT8),
SLE_VAR(Order, flags, SLE_UINT8),
SLE_VAR(Order, dest, SLE_UINT16),
SLE_REF(Order, next, REF_ORDER),
SLE_CONDVAR(Order, refit_cargo, SLE_UINT8, SLV_36, SL_MAX_VERSION),
SLE_CONDVAR(Order, wait_time, SLE_UINT16, SLV_67, SL_MAX_VERSION),
SLE_CONDVAR(Order, travel_time, SLE_UINT16, SLV_67, SL_MAX_VERSION),
SLE_CONDVAR(Order, max_speed, SLE_UINT16, SLV_172, SL_MAX_VERSION),
};
return _order_desc;
}
struct ORDRChunkHandler : ChunkHandler {
ORDRChunkHandler() : ChunkHandler('ORDR', CH_TABLE) {}
void Save() const override
{
const SaveLoadTable slt = GetOrderDescription();
SlTableHeader(slt);
for (Order *order : Order::Iterate()) {
SlSetArrayIndex(order->index);
SlObject(order, slt);
}
}
void Load() const override
{
if (IsSavegameVersionBefore(SLV_5, 2)) {
/* Version older than 5.2 did not have a ->next pointer. Convert them
* (in the old days, the orderlist was 5000 items big) */
size_t len = SlGetFieldLength();
if (IsSavegameVersionBefore(SLV_5)) {
/* Pre-version 5 had another layout for orders
* (uint16_t instead of uint32_t) */
len /= sizeof(uint16_t);
std::vector<uint16_t> orders(len);
SlCopy(&orders[0], len, SLE_UINT16);
for (size_t i = 0; i < len; ++i) {
Order *o = new (i) Order();
o->AssignOrder(UnpackVersion4Order(orders[i]));
}
} else if (IsSavegameVersionBefore(SLV_5, 2)) {
len /= sizeof(uint32_t);
std::vector<uint32_t> orders(len);
SlCopy(&orders[0], len, SLE_UINT32);
for (size_t i = 0; i < len; ++i) {
new (i) Order(GB(orders[i], 0, 8), GB(orders[i], 8, 8), GB(orders[i], 16, 16));
}
}
/* Update all the next pointer */
for (Order *o : Order::Iterate()) {
size_t order_index = o->index;
/* Delete invalid orders */
if (o->IsType(OT_NOTHING)) {
delete o;
continue;
}
/* The orders were built like this:
* While the order is valid, set the previous will get its next pointer set */
Order *prev = Order::GetIfValid(order_index - 1);
if (prev != nullptr) prev->next = o;
}
} else {
const std::vector<SaveLoad> slt = SlCompatTableHeader(GetOrderDescription(), _order_sl_compat);
int index;
while ((index = SlIterateArray()) != -1) {
Order *order = new (index) Order();
SlObject(order, slt);
}
}
}
void FixPointers() const override
{
/* Orders from old savegames have pointers corrected in Load_ORDR */
if (IsSavegameVersionBefore(SLV_5, 2)) return;
for (Order *o : Order::Iterate()) {
SlObject(o, GetOrderDescription());
}
}
};
SaveLoadTable GetOrderListDescription()
{
static const SaveLoad _orderlist_desc[] = {
SLE_REF(OrderList, first, REF_ORDER),
};
return _orderlist_desc;
}
struct ORDLChunkHandler : ChunkHandler {
ORDLChunkHandler() : ChunkHandler('ORDL', CH_TABLE) {}
void Save() const override
{
const SaveLoadTable slt = GetOrderListDescription();
SlTableHeader(slt);
for (OrderList *list : OrderList::Iterate()) {
SlSetArrayIndex(list->index);
SlObject(list, slt);
}
}
void Load() const override
{
const std::vector<SaveLoad> slt = SlCompatTableHeader(GetOrderListDescription(), _orderlist_sl_compat);
int index;
while ((index = SlIterateArray()) != -1) {
/* set num_orders to 0 so it's a valid OrderList */
OrderList *list = new (index) OrderList(0);
SlObject(list, slt);
}
}
void FixPointers() const override
{
for (OrderList *list : OrderList::Iterate()) {
SlObject(list, GetOrderListDescription());
}
}
};
SaveLoadTable GetOrderBackupDescription()
{
static const SaveLoad _order_backup_desc[] = {
SLE_VAR(OrderBackup, user, SLE_UINT32),
SLE_VAR(OrderBackup, tile, SLE_UINT32),
SLE_VAR(OrderBackup, group, SLE_UINT16),
SLE_CONDVAR(OrderBackup, service_interval, SLE_FILE_U32 | SLE_VAR_U16, SL_MIN_VERSION, SLV_192),
SLE_CONDVAR(OrderBackup, service_interval, SLE_UINT16, SLV_192, SL_MAX_VERSION),
SLE_SSTR(OrderBackup, name, SLE_STR),
SLE_CONDREF(OrderBackup, clone, REF_VEHICLE, SLV_192, SL_MAX_VERSION),
SLE_VAR(OrderBackup, cur_real_order_index, SLE_UINT8),
SLE_CONDVAR(OrderBackup, cur_implicit_order_index, SLE_UINT8, SLV_176, SL_MAX_VERSION),
SLE_CONDVAR(OrderBackup, current_order_time, SLE_UINT32, SLV_176, SL_MAX_VERSION),
SLE_CONDVAR(OrderBackup, lateness_counter, SLE_INT32, SLV_176, SL_MAX_VERSION),
SLE_CONDVAR(OrderBackup, timetable_start, SLE_FILE_I32 | SLE_VAR_U64, SLV_176, SLV_TIMETABLE_START_TICKS_FIX),
SLE_CONDVAR(OrderBackup, timetable_start, SLE_UINT64, SLV_TIMETABLE_START_TICKS_FIX, SL_MAX_VERSION),
SLE_CONDVAR(OrderBackup, vehicle_flags, SLE_FILE_U8 | SLE_VAR_U16, SLV_176, SLV_180),
SLE_CONDVAR(OrderBackup, vehicle_flags, SLE_UINT16, SLV_180, SL_MAX_VERSION),
SLE_REF(OrderBackup, orders, REF_ORDER),
};
return _order_backup_desc;
}
struct BKORChunkHandler : ChunkHandler {
BKORChunkHandler() : ChunkHandler('BKOR', CH_TABLE) {}
void Save() const override
{
const SaveLoadTable slt = GetOrderBackupDescription();
SlTableHeader(slt);
/* We only save this when we're a network server
* as we want this information on our clients. For
* normal games this information isn't needed. */
if (!_networking || !_network_server) return;
for (OrderBackup *ob : OrderBackup::Iterate()) {
SlSetArrayIndex(ob->index);
SlObject(ob, slt);
}
}
void Load() const override
{
const std::vector<SaveLoad> slt = SlCompatTableHeader(GetOrderBackupDescription(), _order_backup_sl_compat);
int index;
while ((index = SlIterateArray()) != -1) {
/* set num_orders to 0 so it's a valid OrderList */
OrderBackup *ob = new (index) OrderBackup();
SlObject(ob, slt);
}
}
void FixPointers() const override
{
for (OrderBackup *ob : OrderBackup::Iterate()) {
SlObject(ob, GetOrderBackupDescription());
}
}
};
static const BKORChunkHandler BKOR;
static const ORDRChunkHandler ORDR;
static const ORDLChunkHandler ORDL;
static const ChunkHandlerRef order_chunk_handlers[] = {
BKOR,
ORDR,
ORDL,
};
extern const ChunkHandlerTable _order_chunk_handlers(order_chunk_handlers);
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