#pragma once

#include "TerrainDefine.h"
#include "TerrainFaceNormalInfo.h"
#include <kfile/KStream.h>
#include <kfile/KFileManager.h>
#include <list>


/** vertex coverage factor를 구하기 위해 인접 타일을 알아야 하므로 상하좌우로 1씩의 여분이 더 있어야 한다.
	또한 face normal vector를 구하기 위해 우측과 하단엔 1개의 여분이 추가로 더 필요하다. */
const int c_nTileExtendUpper = 1;
const int c_nTileExtendLower = 2;

/// 디폴트 라이트
const K3DLight c_defaultStaticLight = K3DLight
	( K3DColor( 1.f, 1.f, 1.f )
	, K3DColor( 1.f, 1.f, 1.f )
	, K3DColor( 0.38f, 0.38f, 0.38f )
	, K3DVector( 0.333333f, 0.666666f, -0.666666f ) );


class CTerrainInfoForSegment : public CTerrainInfo
{
public:
	struct INITSTRUCT
	{
		std::string strMapFileName; ///< 문자열이 비어있다면 ( 영역 밖의 세그먼트를 의미 ) 해당 세그먼트는 0으로 초기화 된다.
		int nSegmentIndexInMap;
	};
	struct PROPLOAD_INFO
	{
		NFM_PROPSTRUCT_V15* pPropLoadStructs;
		int nPropLoadCount;

		PROPLOAD_INFO() : pPropLoadStructs( NULL ), nPropLoadCount( 0 ) { }
		~PROPLOAD_INFO()
		{
			SAFE_DELETE_ARRAY(pPropLoadStructs);
		}
	};
	struct SPEEDGRASSLOAD_INFO
	{
		struct SpeedGrassGroup
		{
			int nSpeedGrassID;
			int	nSpeedGrassLoadCount;
			NFM_SPEED_GRASS_V1*	pSpeedGrassLoadStructs;
	
			SpeedGrassGroup() : nSpeedGrassID( 0 ),
								nSpeedGrassLoadCount( 0 ),							
								pSpeedGrassLoadStructs(NULL)
			{}
			~SpeedGrassGroup()
			{
				SAFE_DELETE_ARRAY( pSpeedGrassLoadStructs );
			}
		};

		int						nSpeedGrassGroupCount;
		SpeedGrassGroup*		pSpeedGrassGroup;

		SPEEDGRASSLOAD_INFO() : nSpeedGrassGroupCount( 0 ),
								pSpeedGrassGroup( NULL )
		{}
		~SPEEDGRASSLOAD_INFO()
		{
			clear();
		}
		void clear()
		{
			SAFE_DELETE_ARRAY( pSpeedGrassGroup );
		}
	};

	/// pInitStruct는 9개가 연속해서 있어야 한다.
	CTerrainInfoForSegment( const K3DPoint& rOrigin, const INITSTRUCT* pInitStruct, int nTileCount, float fTileLength, PROPLOAD_INFO& rPropLoadInfo, SPEEDGRASSLOAD_INFO& rSpeedGrassLoadInfo );
	virtual ~CTerrainInfoForSegment();

	const K3DPoint& GetOrigin() const { return m_ptOrigin; }

	const TERRAINMAP_PROPERTIES::COLORING& GetMapColoring() const { return m_MapProperties.Coloring; }

	const K3DLight& GetTerrainLight() const { return m_litTerrain; }
	void SetTerrainLight( const K3DLight& rLight ) { m_litTerrain = rLight; }

	/// 지형 primitive 생성 필요 여부 ( 지형 표시를 끈 맵 또는 맵이 없는 부분은 생성할 필요가 없다. )
	bool NeedPrimitive() const { return m_MapProperties.bShowTerrainInGame; }

	/// 세그먼트에 사용되고 있는 타일들의 종류를 모두 얻는다.
	void GetUsingTileList( std::list<WORD>& rGetList ) const;

	float GetCenterX() const			{ return m_ptOrigin.x + 0.5f * GetSegmentLength(); }
	float GetCenterY() const			{ return m_ptOrigin.y + 0.5f * GetSegmentLength(); }
	float GetSegmentLength() const		{ return m_fTileLength * float( m_nTileCount ); }

// CTerrainInfo의 가상함수 오버로딩
public:
	WORD GetTile( int nX, int nY ) const;
	WORD GetFillBit( int nStage, int nX, int nY ) const;
	float GetHeight( int nX, int nY ) const;
	unsigned __int64 GetAttrData( int nX, int nY ) const;
	KTripleColor GetColor( int nX, int nY ) const;
	K3DVertex GetVertex( int nX, int nY ) const;
	K3DVector GetVertexNormalVector( int nX, int nY ) const;
	BYTE GetVertexCoverageFactor( int nStage, int nX, int nY ) const;
	bool GetAttribute( int nAttrX, int nAttrY ) const;

	WORD GetGameTile( float x, float y ) const;	///< 월드좌표	
	float GetZ( float x, float y ) const;		///< 월드좌표
	KTripleColor GetColorByWorldCoordinate( float x, float y ) const;	///< 월드좌표
	void GetTriangle( float x, float y, K3DVector& v1, K3DVector& v2, K3DVector& v3 ) const;

private:
	K3DPoint m_ptOrigin;
	int      m_nTileCount;
	int      m_nVertexCount;
	float    m_fTileLength;

	NFM_SEGMENTHEADER_V11	m_SegmentHeader;
	int m_nExtendedTileCount;
	NFM_VERTEXSTRUCT_V11*	m_pExtendedVertexStruct;
	NFM_VERTEXSTRUCT_V11	m_DefaultData;

	TERRAINMAP_PROPERTIES m_MapProperties;	///< map properties
	K3DLight m_litTerrain;					///< 지형용 라이트. 지형 primitive는 라이트 처리가 불가능 하므로 버텍스 칼라에서 직접 이것으로 계산해준다.
	K3DVector* m_pVertexNormal;				///< vertex normal vector

	const NFM_VERTEXSTRUCT_V11* GetVertexStruct( int nX, int nY ) const;
	void LoadMapFiles( const INITSTRUCT* pInitStruct, PROPLOAD_INFO& rPropLoadInfo, SPEEDGRASSLOAD_INFO& rSpeedGrassLoadInfo );
	bool LoadPropertiesAndProps( const INITSTRUCT* pInitStruct, PROPLOAD_INFO& rPropLoadInfo, SPEEDGRASSLOAD_INFO& rSpeedGrassLoadInfo );
	void LoadSegment( KStream* pStream, int nLoadPosX, int nLoadPosY, int nSavePosX, int nSavePosY, int nWidth, int nHeight, bool bHeaderLoad );
};