#include"SceneManager.h"
#include"Scene.h"

SceneManager::SceneManager(){}

SceneManager::~SceneManager(){}

void SceneManager::ChangeScene(Scene* p_nextScene)
{
	if (p_nextScene == nullptr) { return; }
	if (m_currentScene != nullptr)
	{
		p_nextScene->m_context = m_currentScene->m_context;
		m_currentScene->OnExit();
	}
	p_nextScene->OnEnter();
	m_currentScene = p_nextScene;
}

void SceneManager::ChangeScene(std::string p_name)
{
	if (Scene* scene = GetScene(p_name); scene)
		ChangeScene(scene);
}

void SceneManager::RegisterScene(std::string p_name, Scene* p_scene)
{
	if (m_scenes.find(p_name) == m_scenes.end())
		m_scenes[p_name] = p_scene;
}

Scene* SceneManager::GetScene(std::string p_name)
{
	if (m_scenes.find(p_name) != m_scenes.end())
		return m_scenes[p_name];
	return NULL;
}