Я пересоздал репозиторий из-за большого количества мусора в прошлом

Core/Game/GameInstance.cpp

@@ -0,0 +1,73 @@
+#include "GameInstance.h"
+
+#include <filesystem>
+#include <fstream>
+#include <chrono>
+#include <thread>
+
+#include "Core/CoreInstance.h"
+#include "Core/RenderEngine.h"
+#include "Game/WorldFactory.h"
+#include "SaveMap/SaveMap.h"
+#include "Game/World/World.h"
+
+extern std::vector<WorldFactory> world_factories;
+
+GameInstance::GameInstance(CoreInstance& core) : core(core)
+{
+	render_engine_ = std::make_unique<RenderEngine>(core.getGameName(), 0, 0, 0, 0, 0, 0);
+	render_engine_->onCloseWindow.bind(this, &GameInstance::quit);
+	const std::string& base_world = core.getBaseWorldName();
+	
+	// Init directories
+	std::filesystem::create_directories(std::filesystem::path("./Resources"));
+	
+	std::ifstream file("./Worlds/" + base_world + ".world");
+	if (file.fail())
+		throw std::runtime_error("Can't open world file");
+	
+	std::string data;
+	std::getline(file, data);
+	
+	for (auto& factories : world_factories)
+	{
+		if (factories.world_name == base_world)
+		{
+			world = factories.factory(*this);
+			break;
+		}
+	}
+	
+	if (world == nullptr)
+		throw std::runtime_error("Can't find world");
+	
+	world->load(std::make_shared<SaveMap>(data));
+}
+
+GameInstance::~GameInstance()
+{
+	delete world;
+}
+
+void GameInstance::start()
+{
+	render_engine_->start();
+	world->BeginPlay();
+
+	auto first = std::chrono::steady_clock::now();
+
+    
+	while (is_running)
+	{
+		auto second = std::chrono::steady_clock::now();
+		std::chrono::milliseconds delta_time = std::chrono::duration_cast<std::chrono::milliseconds>(second - first);
+		world->Tick(delta_time.count() / 1000.0);
+		first = second;
+		std::this_thread::sleep_for(std::chrono::milliseconds(10));
+	}
+}
+
+void GameInstance::quit()
+{
+	is_running = false;
+}