// Copyright (C) 2002-2012 Nikolaus Gebhardt
// This file is part of the "Irrlicht Engine".
// For conditions of distribution and use, see copyright notice in irrlicht.h

#pragma once

// Used with SkinnedMesh and IAnimatedMeshSceneNode, for boned meshes

#include "IBoneSceneNode.h"

#include <optional>

namespace irr
{
namespace scene
{

	class CBoneSceneNode : public IBoneSceneNode
	{
	public:

		//! constructor
		CBoneSceneNode(ISceneNode* parent, ISceneManager* mgr,
			s32 id=-1, u32 boneIndex=0,
			const std::optional<std::string> &boneName = std::nullopt);

		//! Returns the index of the bone
		u32 getBoneIndex() const override;

		//! Sets the animation mode of the bone. Returns true if successful.
		bool setAnimationMode(E_BONE_ANIMATION_MODE mode) override;

		//! Gets the current animation mode of the bone
		E_BONE_ANIMATION_MODE getAnimationMode() const override;

		//! returns the axis aligned bounding box of this node
		const core::aabbox3d<f32>& getBoundingBox() const override;

		/*
		//! Returns the relative transformation of the scene node.
		//core::matrix4 getRelativeTransformation() const override;
		*/

		void OnAnimate(u32 timeMs) override;

		void updateAbsolutePositionOfAllChildren() override;

		//! How the relative transformation of the bone is used
		void setSkinningSpace(E_BONE_SKINNING_SPACE space) override
		{
			SkinningSpace=space;
		}

		E_BONE_SKINNING_SPACE getSkinningSpace() const override
		{
			return SkinningSpace;
		}

	private:
		void helper_updateAbsolutePositionOfAllChildren(ISceneNode *Node);

		u32 BoneIndex;

		core::aabbox3d<f32> Box;

		E_BONE_ANIMATION_MODE AnimationMode;
		E_BONE_SKINNING_SPACE SkinningSpace;
	};


} // end namespace scene
} // end namespace irr