#pragma once

#include "dvc_config.h"
#include "dvc_pre_declare.h"

DV_CORE_BEGIN_NAMESPACE

class DV_CORE_API Scene
{
public:
	void init(void);
	void clear(void);

public:
	SceneNodePtr newSceneNode(const std::string& name);
	SceneNodePtr getRootSceneNode() const;
	void buildRenderableQueue(RenderPipe& pipe) const;

public:
	template<typename ComponentType>
	SceneNodeConstPtr getNodeWithComponent(const char* name = nullptr) const
	{
		return getNodeWithComponent<ComponentType>(name, getRootSceneNode());
	}

	template<typename ComponentType>
	SceneNodeConstPtr getNodeWithComponent(const char* name, SceneNodeConstPtr node) const
	{
		size_t counts = node->getChildCounts();
		for (size_t i = 0; i < counts; i++)
		{
			SceneNodeConstPtr childNodePtr = node->getChild(i);
			if (name != nullptr && childNodePtr->getName() != name)
			{
				continue;
			}

			std::shared_ptr<const ComponentType> component = childNodePtr->getComponent<ComponentType>();
			if (component)
			{
				return childNodePtr;
			}

			//get from child
			SceneNodeConstPtr cameraNode = getNodeWithComponent<ComponentType>(name, childNodePtr);
			if (cameraNode != nullptr)
			{
				return cameraNode;
			}
		}
		return nullptr;
	}

protected:
	SceneNodePtr m_rootSceneNode;

public:
	Scene();
	~Scene();
};

DV_CORE_END_NAMESPACE