x_ecwld.bt

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//	File header
struct ECWDFILEHEADER_1
{
	float	fWorldWid;		//	World width in meters
	float	fWorldLen;		//	World length in meters
	float	fBlockSize;		//	Block size in meters
	int		iBlockGrid;		//	Block grid row and column number, each block has (grid x grid) terrain grids
	int		iNumBlock;		//	Number of block
	int		iWorldBlkRow;	//	Block row number in whole world
	int		iWorldBlkCol;	//	Block column number in whole world
	DWORD	dwTreeOff;		//	Tree type data offset
	DWORD	dwGrassOff;		//	Grass type data offset
	int		iNumTreeType;	//	Number of tree type
	int		iNumGrassType;	//	Number of grass type
	DWORD	dwFlags;		//	World file flags
	float	vSunDir[3];
	DWORD	dwSunColor;
	DWORD	dwAmbient;
	DWORD	dwAmbient2;
	float	fSkyFogFactor;
	float	fSunPower;
	float	fAmbientPower;
	DWORD	dwNightSunColor;
	DWORD	dwNightAmbient;
	DWORD	dwNightAmbient2;
	float	fNightSunPower;
	float	fNightAmbientPower;
	DWORD   Wind;
};

struct ECWDFILEHEADER
{
	float	fWorldWid;		//	World width in meters
	float	fWorldLen;		//	World length in meters
	float	fBlockSize;		//	Block size in meters
	int		iBlockGrid;		//	Block grid row and column number, each block has (grid x grid) terrain grids
	int		iNumBlock;		//	Number of block
	int		iWorldBlkRow;	//	Block row number in whole world
	int		iWorldBlkCol;	//	Block column number in whole world
	DWORD	dwTreeOff;		//	Tree type data offset
	DWORD	dwGrassOff;		//	Grass type data offset
	int		iNumTreeType;	//	Number of tree type
	int		iNumGrassType;	//	Number of grass type
	DWORD	dwFlags;		//	World file flags
	float	vSunDir[3];
	DWORD	dwSunColor;
	DWORD	dwAmbient;
	DWORD	dwAmbient2;
	float	fSkyFogFactor;
	float	fSunPower;
	float	fAmbientPower;
	DWORD	dwNightSunColor;
	DWORD	dwNightAmbient;
	DWORD	dwNightAmbient2;
	float	fNightSunPower;
	float	fNightAmbientPower;
	DWORD   Wind;
	float	fPtLightPower;
	float	fNightPtLightPower;
	float	fSunLightCo;
	float	SSAO_Radius;
	float	SSAO_Constrast;
	float	SSAO_Darkest;
	float	SpeedTreeWindFrequency;
	int		nSepBuildingPath;

	// reverse
	float	fSkyFogStart;
	float	fSkyFogEnd;
	byte	reserve[24];
};

struct A3DVECTOR3
{
    float x, y, z;
};

struct A3DVECTOR4
{
    float x, y, z, w;
};

struct ECWDFILEFFTWATER1 // ECWDFFTWATERVERSION
{
	float m_fWaterLevel;				//水面高度
	float m_fWindDirection;				//风向								0 ~ PI*2
	float m_fGravity;					//重力								1 ~ 20

	float m_fWindSpeed;					//风速								0 ~ 16
	float m_fWavesSpeed;				//波浪速度(影响非FFT波浪和泡沫)		0 ~ 10 
	float m_fWavesAmount;				//FFT瓷砖大小						0 ~ 10
	float m_fWavesSize;					//波浪剧烈程度						0 ~ 2
	float m_fSoftIntersectionFactor;	//边缘软化程度						0 ~ 10
	float m_fReflectionAmount;			//反射强度							0 ~ 10
	float m_fWhiteCapsAmount;			//顶部高光							0 ~ 2
	float m_fSunMultiplier;				//太阳反光强度						0 ~ 32
	float m_fFresnelScale;				//菲涅尔缩放						0 ~ 32

	float m_fFogDensity;				//水下雾强度系数					0 ~ 4
	float m_fWaterFogScaleExp;			//水下雾强度指数					0 ~ 10				

	byte m_bUseFFT;						//是否开启FFT
	byte m_bEdgeFoam;					//是否开启边缘泡沫
	byte m_bWaveFoam;					//是否开启波浪上的泡沫
	byte m_bWaveGloss;					//是否开启波浪上的高光

	byte m_bUseCustomColor;				//是否使用用户指定的颜色作为水的颜色, 不开启则使用全局雾的颜色
	A3DVECTOR3 m_vWaterFogColor;		//用户指定的水颜色
};

struct ECWDFILEFFTWATER2 // ECWDFFTWATERVERSION
{
	float m_fWaterLevel;				//水面高度
	float m_fWindDirection;				//风向								0 ~ PI*2
	float m_fGravity;					//重力								1 ~ 20

	float m_fWindSpeed;					//风速								0 ~ 16
	float m_fWavesSpeed;				//波浪速度(影响非FFT波浪和泡沫)		0 ~ 10 
	float m_fWavesAmount;				//FFT瓷砖大小						0 ~ 10
	float m_fWavesSize;					//波浪剧烈程度						0 ~ 2
	float m_fSoftIntersectionFactor;	//边缘软化程度						0 ~ 10
	float m_fReflectionAmount;			//反射强度							0 ~ 10
	float m_fWhiteCapsAmount;			//顶部高光							0 ~ 2
	float m_fSunMultiplier;				//太阳反光强度						0 ~ 32
	float m_fFresnelScale;				//菲涅尔缩放						0 ~ 32

	float m_fFogDensity;				//水下雾强度系数					0 ~ 4
	float m_fWaterFogScaleExp;			//水下雾强度指数					0 ~ 10				

	byte m_bUseFFT;						//是否开启FFT
	byte m_bEdgeFoam;					//是否开启边缘泡沫
	byte m_bWaveFoam;					//是否开启波浪上的泡沫
	byte m_bWaveGloss;					//是否开启波浪上的高光

	byte m_bUseCustomColor;				//是否使用用户指定的颜色作为水的颜色, 不开启则使用全局雾的颜色
	A3DVECTOR3 m_vWaterFogColor;		//用户指定的水颜色

	byte m_bEnableAreaConstrain;
	A3DVECTOR4 m_vAreaConstrain;
	byte m_bCubeReflect;
};

DWORD	dwIdentify;
DWORD	dwVersion;

local int block;
if(dwVersion >= 34)
{
    ECWDFILEHEADER header;
    block = header.iNumBlock;
    
    if(dwVersion >= 45)
        int i_1;
}
else
{
    ECWDFILEHEADER_1 header_1;
    block = header_1.iNumBlock;
}

if(dwVersion >= 32)
{
    DWORD FFTWaterVersion;
    if(FFTWaterVersion == 1)
    {
        ECWDFILEFFTWATER1 p1;
    }
    else if(FFTWaterVersion == 2)
    {
        ECWDFILEFFTWATER2 p2;
        byte unkon[9];
    }
}

DWORD NumBlock[block];