economy_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 <https://www.gnu.org/licenses/old-licenses/gpl-2.0>.
 */

 
#include "../stdafx.h"
 
#include "saveload.h"
#include "compat/economy_sl_compat.h"
 
#include "../economy_func.h"
#include "../economy_base.h"
 
#include "../safeguards.h"

struct PRICChunkHandler : ChunkHandler {
  PRICChunkHandler() : ChunkHandler('PRIC', ChunkType::ReadOnly) {}
 
  void Load() const override
  {
    /* Old games store 49 base prices, very old games store them as int32_t */
    VarFileType vt = IsSavegameVersionBefore(SaveLoadVersion::UnifyCurrency) ? VarFileType::I32 : VarFileType::I64;
    SlCopy(nullptr, 49, vt | VarMemType::Null);
    SlCopy(nullptr, 49, VarFileType::U16 | VarMemType::Null);
  }
};

struct CAPRChunkHandler : ChunkHandler {
  CAPRChunkHandler() : ChunkHandler('CAPR', ChunkType::ReadOnly) {}
 
  void Load() const override
  {
    uint num_cargo = IsSavegameVersionBefore(SaveLoadVersion::NewGRFCargo) ? 12 : IsSavegameVersionBefore(SaveLoadVersion::ExtendCargotypes) ? 32 : NUM_CARGO;
    VarFileType vt = IsSavegameVersionBefore(SaveLoadVersion::UnifyCurrency) ? VarFileType::I32 : VarFileType::I64;
    SlCopy(nullptr, num_cargo, vt | VarMemType::Null);
    SlCopy(nullptr, num_cargo, VarFileType::U16 | VarMemType::Null);
  }
};
 
static const SaveLoad _economy_desc[] = {
  SLE_CONDVAR(Economy, old_max_loan_unround, VarFileType::I32 | VarMemType::I64, SaveLoadVersion::MinVersion, SaveLoadVersion::UnifyCurrency),
  SLE_CONDVAR(Economy, old_max_loan_unround, VarTypes::I64, SaveLoadVersion::UnifyCurrency, SaveLoadVersion::CumulatedInflation),
  SLE_CONDVAR(Economy, old_max_loan_unround_fract, VarTypes::U16, SaveLoadVersion::CargoPaymentOverflow, SaveLoadVersion::CumulatedInflation),
  SLE_CONDVAR(Economy, inflation_prices, VarTypes::U64, SaveLoadVersion::CumulatedInflation, SaveLoadVersion::MaxVersion),
  SLE_CONDVAR(Economy, inflation_payment, VarTypes::U64, SaveLoadVersion::CumulatedInflation, SaveLoadVersion::MaxVersion),
      SLE_VAR(Economy, fluct,                         VarTypes::I16),
      SLE_VAR(Economy, interest_rate,                 VarTypes::U8),
      SLE_VAR(Economy, infl_amount,                   VarTypes::U8),
      SLE_VAR(Economy, infl_amount_pr,                VarTypes::U8),
  SLE_CONDVAR(Economy, industry_daily_change_counter, VarTypes::U32, SaveLoadVersion::SpreadIndustryProductionChanges, SaveLoadVersion::MaxVersion),
};

struct ECMYChunkHandler : ChunkHandler {
  ECMYChunkHandler() : ChunkHandler('ECMY', ChunkType::Table) {}
 
  void Save() const override
  {
    SlTableHeader(_economy_desc);
 
    SlSetArrayIndex(0);
    SlObject(&_economy, _economy_desc);
  }
 
 
  void Load() const override
  {
    const std::vector<SaveLoad> slt = SlCompatTableHeader(_economy_desc, _economy_sl_compat);
 
    if (!IsSavegameVersionBefore(SaveLoadVersion::RiffToArray) && SlIterateArray() == -1) return;
    SlObject(&_economy, slt);
    if (!IsSavegameVersionBefore(SaveLoadVersion::RiffToArray) && SlIterateArray() != -1) SlErrorCorrupt("Too many ECMY entries");
 
    StartupIndustryDailyChanges(IsSavegameVersionBefore(SaveLoadVersion::SpreadIndustryProductionChanges)); // old savegames will need to be initialized
  }
};
 
static const SaveLoad _cargopayment_desc[] = {
      SLE_REF(CargoPayment, front,           SLRefType::Vehicle),
      SLE_VAR(CargoPayment, route_profit,    VarTypes::I64),
      SLE_VAR(CargoPayment, visual_profit,   VarTypes::I64),
  SLE_CONDVAR(CargoPayment, visual_transfer, VarTypes::I64, SaveLoadVersion::CargoReservation, SaveLoadVersion::MaxVersion),
};
 
struct CAPYChunkHandler : ChunkHandler {
  CAPYChunkHandler() : ChunkHandler('CAPY', ChunkType::Table) {}
 
  void Save() const override
  {
    SlTableHeader(_cargopayment_desc);
 
    for (CargoPayment *cp : CargoPayment::Iterate()) {
      SlSetArrayIndex(cp->index);
      SlObject(cp, _cargopayment_desc);
    }
  }
 
  void Load() const override
  {
    const std::vector<SaveLoad> slt = SlCompatTableHeader(_cargopayment_desc, _cargopayment_sl_compat);
 
    int index;
 
    while ((index = SlIterateArray()) != -1) {
      CargoPayment *cp = CargoPayment::CreateAtIndex(CargoPaymentID(index));
      SlObject(cp, slt);
    }
  }
 
  void FixPointers() const override
  {
    for (CargoPayment *cp : CargoPayment::Iterate()) {
      SlObject(cp, _cargopayment_desc);
    }
  }
};
 
static const CAPYChunkHandler CAPY;
static const PRICChunkHandler PRIC;
static const CAPRChunkHandler CAPR;
static const ECMYChunkHandler ECMY;
static const ChunkHandlerRef economy_chunk_handlers[] = {
  CAPY,
  PRIC,
  CAPR,
  ECMY,
};
 
extern const ChunkHandlerTable _economy_chunk_handlers(economy_chunk_handlers);