script_config.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/>.
 */
 
#include "../stdafx.h"
#include "../settings_type.h"
#include "../core/random_func.hpp"
#include "script_info.hpp"
#include "api/script_object.hpp"
#include "../textfile_gui.h"
#include "../string_func.h"
#include <charconv>
 
#include "../safeguards.h"
 
void ScriptConfig::Change(std::optional<const std::string> name, int version, bool force_exact_match)
{
  if (name.has_value()) {
    this->name = std::move(name.value());
    this->info = this->FindInfo(this->name, version, force_exact_match);
  } else {
    this->info = nullptr;
  }
  this->version = (info == nullptr) ? -1 : info->GetVersion();
  this->config_list.reset();
  this->to_load_data.reset();
 
  this->ClearConfigList();
}
 
ScriptConfig::ScriptConfig(const ScriptConfig *config)
{
  this->name = config->name;
  this->info = config->info;
  this->version = config->version;
  this->to_load_data.reset();
 
  for (const auto &item : config->settings) {
    this->settings[item.first] = item.second;
  }
}
 
ScriptConfig::~ScriptConfig()
{
  this->ResetSettings();
  this->to_load_data.reset();
}
 
ScriptInfo *ScriptConfig::GetInfo() const
{
  return this->info;
}
 
const ScriptConfigItemList *ScriptConfig::GetConfigList()
{
  if (this->info != nullptr) return this->info->GetConfigList();
  if (this->config_list == nullptr) {
    this->config_list = std::make_unique<ScriptConfigItemList>();
  }
  return this->config_list.get();
}
 
void ScriptConfig::ClearConfigList()
{
  this->settings.clear();
}
 
void ScriptConfig::AnchorUnchangeableSettings()
{
  for (const auto &item : *this->GetConfigList()) {
    if ((item.flags & SCRIPTCONFIG_INGAME) == 0) {
      this->SetSetting(item.name, this->GetSetting(item.name));
    }
  }
}
 
int ScriptConfig::GetSetting(const std::string &name) const
{
  const auto it = this->settings.find(name);
  if (it == this->settings.end()) return this->info->GetSettingDefaultValue(name);
  return (*it).second;
}
 
void ScriptConfig::SetSetting(const std::string_view name, int value)
{
  /* You can only set Script specific settings if an Script is selected. */
  if (this->info == nullptr) return;
 
  const ScriptConfigItem *config_item = this->info->GetConfigItem(name);
  if (config_item == nullptr) return;
 
  value = Clamp(value, config_item->min_value, config_item->max_value);
 
  this->settings[std::string{name}] = value;
}
 
void ScriptConfig::ResetSettings()
{
  this->settings.clear();
}
 
void ScriptConfig::ResetEditableSettings(bool yet_to_start)
{
  if (this->info == nullptr) return ResetSettings();
 
  for (SettingValueList::iterator it = this->settings.begin(); it != this->settings.end();) {
    const ScriptConfigItem *config_item = this->info->GetConfigItem(it->first);
    assert(config_item != nullptr);
 
    bool editable = yet_to_start || (config_item->flags & SCRIPTCONFIG_INGAME) != 0;
    bool visible = _settings_client.gui.ai_developer_tools || (config_item->flags & SCRIPTCONFIG_DEVELOPER) == 0;
 
    if (editable && visible) {
      it = this->settings.erase(it);
    } else {
      it++;
    }
  }
}
 
void ScriptConfig::AddRandomDeviation(CompanyID owner)
{
  for (const auto &item : *this->GetConfigList()) {
    if (item.random_deviation != 0) {
      this->SetSetting(item.name, ScriptObject::GetRandomizer(owner).Next(item.random_deviation * 2 + 1) - item.random_deviation + this->GetSetting(item.name));
    }
  }
}
 
bool ScriptConfig::HasScript() const
{
  return this->info != nullptr;
}
 
const std::string &ScriptConfig::GetName() const
{
  return this->name;
}
 
int ScriptConfig::GetVersion() const
{
  return this->version;
}
 
void ScriptConfig::StringToSettings(const std::string &value)
{
  std::string_view to_process = value;
  for (;;) {
    /* Analyze the string ('name=value,name=value\0') */
    size_t pos = to_process.find_first_of('=');
    if (pos == std::string_view::npos) return;
 
    std::string_view item_name = to_process.substr(0, pos);
 
    to_process.remove_prefix(pos + 1);
    pos = to_process.find_first_of(',');
    int item_value = 0;
    std::from_chars(to_process.data(), to_process.data() + std::min(pos, to_process.size()), item_value);
 
    this->SetSetting(item_name, item_value);
 
    if (pos == std::string_view::npos) return;
    to_process.remove_prefix(pos + 1);
  }
}
 
std::string ScriptConfig::SettingsToString() const
{
  if (this->settings.empty()) return {};
 
  std::string result;
  for (const auto &item : this->settings) {
    fmt::format_to(std::back_inserter(result), "{}={},", item.first, item.second);
  }
 
  /* Remove the last ','. */
  result.resize(result.size() - 1);
  return result;
}
 
std::optional<std::string> ScriptConfig::GetTextfile(TextfileType type, CompanyID slot) const
{
  if (slot == INVALID_COMPANY || this->GetInfo() == nullptr) return std::nullopt;
 
  return ::GetTextfile(type, (slot == OWNER_DEITY) ? GAME_DIR : AI_DIR, this->GetInfo()->GetMainScript());
}
 
void ScriptConfig::SetToLoadData(ScriptInstance::ScriptData *data)
{
  this->to_load_data.reset(data);
}
 
ScriptInstance::ScriptData *ScriptConfig::GetToLoadData()
{
  return this->to_load_data.get();
}