// SkyBox.h: interface for the CSkyBox class.
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_SKYBOX_H__AB5049E1_8F1C_4C35_9406_45EC7EF4AD1B__INCLUDED_)
#define AFX_SKYBOX_H__AB5049E1_8F1C_4C35_9406_45EC7EF4AD1B__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

#include "GrpBase.h"
#include "GrpScreen.h"
#include "GrpImageInstance.h"
#include "ColorTransitionHelper.h"

#include <map>
#include <string>

typedef struct SColor
{
	SColor(float _r = 0.0f, float _g = 0.0f, float _b = 0.0f, float _a = 0.0f) : r(_r), g(_g), b(_b), a(_a){}
	float r, g, b, a;
} TColor;

typedef struct 
{
	TColor	m_FirstColor;
	TColor	m_SecondColor;
}TGradientColor;

typedef std::vector<TGradientColor> TVectorGradientColor;
typedef TVectorGradientColor::iterator TVectorGradientIterator;

class CSkyObjectQuad
{
public:
	CSkyObjectQuad();
	virtual ~CSkyObjectQuad();

	void Clear(const unsigned char & c_rucNumVertex,
		const float & c_rfRed,
		const float & c_rfGreen,
		const float & c_rfBlue,
		const float & c_rfAlpha);
	void SetSrcColor(const unsigned char & c_rucNumVertex,
		const float & c_rfRed,
		const float & c_rfGreen,
		const float & c_rfBlue,
		const float & c_rfAlpha);
	void SetTransition(const unsigned char & c_rucNumVertex,
		const float & c_rfRed,
		const float & c_rfGreen,
		const float & c_rfBlue,
		const float & c_rfAlpha,
		DWORD dwDuration);
	
	void SetVertex(const unsigned char & c_rucNumVertex, const TPDTVertex & c_rPDTVertex);
	
	void StartTransition();
	bool Update();
	void Render();
	
private:
	TPDTVertex m_Vertex[4];
	TIndex m_Indices[4];					// 인덱스 버퍼...
	CColorTransitionHelper m_Helper[4];
};

class CSkyObject : public CScreen
{
public:
	enum
	{
		SKY_RENDER_MODE_DEFAULT,	// = SKY_RENDER_MODE_TEXTURE
		SKY_RENDER_MODE_DIFFUSE,
		SKY_RENDER_MODE_TEXTURE,
		SKY_RENDER_MODE_MODULATE,
		SKY_RENDER_MODE_MODULATE2X,
		SKY_RENDER_MODE_MODULATE4X,
	};

	CSkyObject();
	virtual ~CSkyObject();

	virtual void Destroy() = 0;

	virtual void Render() = 0;
	virtual void Update() = 0;
	virtual void StartTransition();

	void SetRenderMode(unsigned char ucRenderMode) { m_ucRenderMode = ucRenderMode;	}

	const bool & isTransitionStarted() { return m_bTransitionStarted; }

protected:
	CGraphicImageInstance * GenerateTexture(const char * szfilename);
	void DeleteTexture(CGraphicImageInstance * pGraphicImageInstance);

protected:
	//////////////////////////////////////////////////////////////////////////
	// 타입 정의

	typedef std::vector<CSkyObjectQuad> TSkyObjectQuadVector;
	typedef TSkyObjectQuadVector::iterator TSkyObjectQuadIterator;
	
	typedef struct CSkyBox
	{
		void StartTransition();
		bool Update();
		void Render();
		std::string m_strfacename;
		std::string m_strFaceTextureFileName;
		TSkyObjectQuadVector m_SkyObjectQuadVector;
	}TSkyObjectFace;

	typedef std::map <std::string, CGraphicImageInstance*> TGraphicImageInstanceMap;

	//////////////////////////////////////////////////////////////////////////
	
	// 구름...
	TSkyObjectFace m_FaceCloud;		// 구름 일단 한장...
	D3DXMATRIX m_matWorldCloud, m_matTranslationCloud, m_matTextureCloud;
	D3DXVECTOR3 m_v3PositionCloud;
	float m_fCloudScaleX, m_fCloudScaleY, m_fCloudHeight;
	float m_fCloudTextureScaleX, m_fCloudTextureScaleY;
	float m_fCloudScrollSpeedU, m_fCloudScrollSpeedV;
	float m_fCloudPositionU, m_fCloudPositionV;

	DWORD m_dwlastTime;

	// 스카이 박스 이미지...
	TGraphicImageInstanceMap m_GraphicImageInstanceMap;
	
	// Transform...
	D3DXMATRIX m_matWorld, m_matTranslation;
	D3DXVECTOR3 m_v3Position;
	float m_fScaleX, m_fScaleY, m_fScaleZ;

	// 랜더링 관련... 임시 변수..
	unsigned char m_ucRenderMode;

	std::string m_strCurTime;
	bool m_bTransitionStarted;
	bool m_bSkyMatrixUpdated;
	
	CGraphicImageInstance m_CloudAlphaImageInstance;
};

class CSkyBox : public CSkyObject
{
public:
	CSkyBox();
	virtual ~CSkyBox();

	void Update();
	void Render();
	void RenderCloud();

	void Destroy();
	void Unload();

	void SetSkyBoxScale(const D3DXVECTOR3 & c_rv3Scale);
	void SetGradientLevel(BYTE byUpper, BYTE byLower);
	void SetFaceTexture( const char* c_szFileName, int iFaceIndex );
	void SetCloudTexture(const char * c_szFileName);
	void SetCloudScale(const D3DXVECTOR2 & c_rv2CloudScale);
	void SetCloudHeight(float fHeight);
	void SetCloudTextureScale(const D3DXVECTOR2 & c_rv2CloudTextureScale);
	void SetCloudScrollSpeed(const D3DXVECTOR2 & c_rv2CloudScrollSpeed);
	void SetCloudColor(const TGradientColor & c_rColor, const TGradientColor & c_rNextColor, const DWORD & dwTransitionTime);
	void Refresh();
	void SetSkyColor(const TVectorGradientColor & c_rColorVector, const TVectorGradientColor & c_rNextColorVector, long lTransitionTime);
	void StartTransition();

protected:
	void SetSkyObjectQuadVertical(TSkyObjectQuadVector * pSkyObjectQuadVector, const D3DXVECTOR2 * c_pv2QuadPoints);
	void SetSkyObjectQuadHorizon(TSkyObjectQuadVector * pSkyObjectQuadVector, const D3DXVECTOR3 * c_pv3QuadPoints);

	//void UpdateSkyFaceQuadTransform(D3DXVECTOR3 * c_pv3QuadPoints);

protected:
	unsigned char m_ucVirticalGradientLevelUpper;
	unsigned char m_ucVirticalGradientLevelLower;
	TSkyObjectFace m_Faces[6];
};

#endif // !defined(AFX_SKYBOX_H__AB5049E1_8F1C_4C35_9406_45EC7EF4AD1B__INCLUDED_)
