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Copy pathSceneSerializer.cpp
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173 lines (149 loc) · 3.58 KB
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/**
*
* @file SceneSerializer.cpp
* @author Gaspard Kirira
*
* Copyright 2026, Gaspard Kirira.
* All rights reserved.
* https://github.com/vixcpp/game
*
* Use of this source code is governed by a MIT license
* that can be found in the LICENSE file.
*
* Vix.cpp
*
*/
#include <vix/game/SceneSerializer.hpp>
#include <fstream>
#include <sstream>
#include <utility>
#include <vix/game/GameError.hpp>
#include <vix/game/SceneData.hpp>
#include <vix/json/dumps.hpp>
#include <vix/json/loads.hpp>
namespace vix::game
{
vix::json::Json SceneSerializer::to_json(
const SceneManager &manager)
{
return manager.to_data().to_json();
}
GameBoolResult SceneSerializer::from_json(
SceneManager &manager,
const vix::json::Json &json,
SceneFactory factory)
{
if (!factory)
{
return make_game_error(
GameErrorCode::InvalidArgument,
"scene factory cannot be empty");
}
auto data = SceneFileData::from_json(json);
if (!data)
{
return data.error();
}
manager.clear();
for (const auto &entry : data.value().scenes)
{
auto scene = factory(entry.name);
if (!scene)
{
return make_game_error(
GameErrorCode::SceneLoadFailed,
"scene factory returned null");
}
auto added = manager.add(entry.name, std::move(scene));
if (!added)
{
return added.error();
}
if (entry.loaded)
{
auto loaded = manager.load(entry.name);
if (!loaded)
{
return loaded.error();
}
}
}
if (!data.value().active_scene.empty())
{
auto active = manager.set_active(data.value().active_scene);
if (!active)
{
return active.error();
}
}
if (json.contains("active_scene") && json["active_scene"].is_string())
{
const std::string active_name =
json["active_scene"].template get<std::string>();
if (!active_name.empty())
{
auto active = manager.set_active(active_name);
if (!active)
{
return active.error();
}
}
}
return true;
}
GameBoolResult SceneSerializer::save_file(
const SceneManager &manager,
const std::string &path)
{
if (path.empty())
{
return make_game_error(
GameErrorCode::ConfigInvalid,
"scene file path cannot be empty");
}
std::ofstream file(path);
if (!file)
{
return make_game_error(
GameErrorCode::ConfigLoadFailed,
"failed to open scene file for writing");
}
file << vix::json::dumps(to_json(manager));
if (!file)
{
return make_game_error(
GameErrorCode::ConfigLoadFailed,
"failed to write scene file");
}
return true;
}
GameBoolResult SceneSerializer::load_file(
SceneManager &manager,
const std::string &path,
SceneFactory factory)
{
if (path.empty())
{
return make_game_error(
GameErrorCode::ConfigNotFound,
"scene file path cannot be empty");
}
std::ifstream file(path);
if (!file)
{
return make_game_error(
GameErrorCode::ConfigNotFound,
"scene file not found");
}
std::ostringstream buffer;
buffer << file.rdbuf();
auto json = vix::json::try_loads(buffer.str());
if (!json)
{
return make_game_error(
GameErrorCode::ConfigInvalid,
"failed to parse scene json");
}
return from_json(manager, json.value(), std::move(factory));
}
} // namespace vix::game