lightfog.cpp

好游戏的客户端原码

#include "StdAfx.h"


CLightFog::CLightFog()
{
	Init(RGB(220, 220, 220));
}


CLightFog::~CLightFog()
{
}


VOID CLightFog::Init(DWORD dwLightColor)
{
	m_dwLightColor = dwLightColor;

	for ( INT nCntY = 0; nCntY < (NUM_CNTY_LIGHTTILE+1); nCntY++ )
	{
		for ( INT nCntX = 0; nCntX < (NUM_CNTX_LIGHTTILE+1); nCntX++ )
		{
			m_avLight[nCntY][nCntX] = D3DLVERTEX(D3DVECTOR((FLOAT)(TILE_START_XPOS+(nCntX*TILE_WIDTH)), (FLOAT)(-TILE_START_YPOS-(nCntY*TILE_HEIGHT)), 0),
								  			     m_dwLightColor, RGB(0, 0, 0),  0, 0); 
		}
	}

	memcpy(m_avSaveLight, m_avLight, sizeof(D3DLVERTEX)*(NUM_CNTY_LIGHTTILE+1)*(NUM_CNTX_LIGHTTILE+1));

	// 鸥老弃府帮狼 牢郸胶 积己.
    WORD* pwIndex = m_pwLightIndices;
	for ( nCntY = 0; nCntY < NUM_CNTY_LIGHTTILE; nCntY++ )
	{
		for ( INT nCntX = 0; nCntX < NUM_CNTX_LIGHTTILE; nCntX++ )
		{
			*pwIndex++ = (nCntX+1)+((NUM_CNTX_LIGHTTILE+1)*nCntY);  
			*pwIndex++ = nCntX+((NUM_CNTX_LIGHTTILE+1)*(nCntY+1));  
			*pwIndex++ = (nCntX+1)+((NUM_CNTX_LIGHTTILE+1)*(nCntY+1));
			*pwIndex++ = nCntX+((NUM_CNTX_LIGHTTILE+1)*(nCntY+1));  
			*pwIndex++ = (nCntX+1)+((NUM_CNTX_LIGHTTILE+1)*nCntY);  
			*pwIndex++ = (nCntX)+((NUM_CNTX_LIGHTTILE+1)*nCntY);
		}
	}
}


VOID CLightFog::ChangeLightColor(DWORD dwColor)
{
	if ( m_dwLightColor != dwColor )
	{
		for ( INT nCntY = 0; nCntY < NUM_CNTY_LIGHTTILE+1; nCntY++ )
		{
			for ( INT nCntX = 0; nCntX < NUM_CNTX_LIGHTTILE+1; nCntX++ )
			{
				m_avLight[nCntY][nCntX].color = dwColor;
			}
		}
		m_dwLightColor = dwColor;
		memcpy(m_avSaveLight, m_avLight, sizeof(D3DLVERTEX)*(NUM_CNTY_LIGHTTILE+1)*(NUM_CNTX_LIGHTTILE+1));
	}
}


VOID CLightFog::ClearSavedLightColor()
{
	memcpy(m_avLight, m_avSaveLight, sizeof(D3DLVERTEX)*(NUM_CNTY_LIGHTTILE+1)*(NUM_CNTX_LIGHTTILE+1));
}


BOOL CLightFog::GetScreenPosToLightTile(INT nX, INT nY, INT* nTileX, INT* nTileY)
{
	*nTileX = (nX - TILE_START_XPOS) / TILE_WIDTH;
	*nTileY = (nY - TILE_START_YPOS) / TILE_HEIGHT;
	
	return TRUE;
}


BOOL CLightFog::SetLightRadiusWithRing(INT XLightPos, INT YLightPos, 
									   INT nSmallRadius, 
									   INT nSmallRed, INT nSmallGreen, INT nSmallBlue, 
									   INT nLargeRadius,
									   INT nLargeRed, INT nLargeGreen, INT nLargeBlue)
{
	INT nX, nY;
	GetScreenPosToLightTile(XLightPos, YLightPos, &nX, &nY);

	INT nStartTileX			= nX - nLargeRadius;
	INT nStartTileY			= nY - nLargeRadius;
	INT nEndTileX			= nX + nLargeRadius + 1;
	INT nEndTileY			= nY + nLargeRadius + 1;

	// y甫 绵栏肺 秦辑 俩 绢滴款 何盒阑 备茄促.(x焊促 y啊 歹 利栏骨肺)
	nLargeRadius = (nLargeRadius*TILE_HEIGHT);
	nSmallRadius = (nSmallRadius*TILE_HEIGHT);

	DOUBLE rLengthCnt		= 0;
	INT nSelectedRedValue	= 0; 
	INT nSelectedGreenValue	= 0;
	INT nSelectedBlueValue	= 0;

	if ( nStartTileX < 0 )					nStartTileX = 0;
	if ( nStartTileY < 0 )					nStartTileY = 0;
	if ( nEndTileX > NUM_CNTX_LIGHTTILE+1 )	nEndTileX = NUM_CNTX_LIGHTTILE+1;
	if ( nEndTileY > NUM_CNTY_LIGHTTILE+1 )	nEndTileY = NUM_CNTY_LIGHTTILE+1;	

	for ( INT nCntY = nStartTileY; nCntY < nEndTileY; nCntY++ )
	{
		for ( INT nCntX = nStartTileX; nCntX < nEndTileX; nCntX++ )
		{			
			rLengthCnt	= sqrt((double)(XLightPos-(nCntX*TILE_WIDTH+TILE_START_XPOS))*(XLightPos-(nCntX*TILE_WIDTH+TILE_START_XPOS)) + 
							   (YLightPos-(nCntY*TILE_HEIGHT+TILE_START_YPOS))*(YLightPos-(nCntY*TILE_HEIGHT+TILE_START_YPOS)));
			if ( nCntX < NUM_CNTX_LIGHTTILE && nCntY < NUM_CNTY_LIGHTTILE )
			{
				// 器牢飘痢阑 器窃窍瘤 臼绰 谅窍. 器牢飘痢阑 器窃窍瘤 臼绰 快惑.
				if ( (nCntX > nX && nCntY < nY) || (nCntX < nX && nCntY > nY) )
				{
					WORD* pwIndex = ((WORD*)m_pwLightIndices+(nCntX+nCntY*(NUM_CNTX_LIGHTTILE))*6);
					*pwIndex++ = (nCntX)+((NUM_CNTX_LIGHTTILE+1)*nCntY);
					*pwIndex++ = (nCntX+1)+((NUM_CNTX_LIGHTTILE+1)*nCntY);  
					*pwIndex++ = (nCntX+1)+((NUM_CNTX_LIGHTTILE+1)*(nCntY+1));
					*pwIndex++ = (nCntX)+((NUM_CNTX_LIGHTTILE+1)*nCntY);
					*pwIndex++ = nCntX+((NUM_CNTX_LIGHTTILE+1)*(nCntY+1));  
					*pwIndex++ = (nCntX+1)+((NUM_CNTX_LIGHTTILE+1)*(nCntY+1));
				}
				else
				{
					WORD* pwIndex = ((WORD*)m_pwLightIndices+(nCntX+nCntY*(NUM_CNTX_LIGHTTILE))*6);
					*pwIndex++ = (nCntX+1)+((NUM_CNTX_LIGHTTILE+1)*nCntY);  
					*pwIndex++ = nCntX+((NUM_CNTX_LIGHTTILE+1)*(nCntY+1));  
					*pwIndex++ = (nCntX+1)+((NUM_CNTX_LIGHTTILE+1)*(nCntY+1));
					*pwIndex++ = nCntX+((NUM_CNTX_LIGHTTILE+1)*(nCntY+1));  
					*pwIndex++ = (nCntX+1)+((NUM_CNTX_LIGHTTILE+1)*nCntY);  
					*pwIndex++ = (nCntX)+((NUM_CNTX_LIGHTTILE+1)*nCntY);
				}
			}

			if ( rLengthCnt	< nSmallRadius )
			{
				nSelectedRedValue	= nSmallRed - INT((nSmallRed*rLengthCnt)/(nLargeRadius));
				nSelectedGreenValue	= nSmallGreen - INT((nSmallGreen*rLengthCnt)/(nLargeRadius));
				nSelectedBlueValue	= nSmallBlue - INT((nSmallBlue*rLengthCnt)/(nLargeRadius));
			}
			else if ( rLengthCnt >= nSmallRadius && rLengthCnt <= nLargeRadius )
			{
				nSelectedRedValue	= nLargeRed - INT((nLargeRed*rLengthCnt)/(nLargeRadius));
				nSelectedGreenValue	= nLargeGreen - INT((nLargeGreen*rLengthCnt)/(nLargeRadius));
				nSelectedBlueValue	= nLargeBlue - INT((nLargeBlue*rLengthCnt)/(nLargeRadius));
			}
			else
			{
				nSelectedRedValue = nSelectedGreenValue = nSelectedBlueValue = 0;
			}

			if ( nSelectedRedValue	 < 0 )		nSelectedRedValue	= 0;
			if ( nSelectedGreenValue < 0 )		nSelectedGreenValue = 0;
			if ( nSelectedBlueValue	 < 0 )		nSelectedBlueValue	= 0;

			if ( m_avLight[nCntY][nCntX].color == 0 )
				m_avLight[nCntY][nCntX].color = RGB(nSelectedRedValue, nSelectedGreenValue, nSelectedBlueValue); 
			else
			{
				nSelectedRedValue += (INT)RGB_GETBLUE(m_avLight[nCntY][nCntX].color);
				nSelectedGreenValue += (INT)RGB_GETGREEN(m_avLight[nCntY][nCntX].color);
				nSelectedBlueValue += (INT)RGB_GETRED(m_avLight[nCntY][nCntX].color);

				if ( nSelectedRedValue	 > 255 )		nSelectedRedValue	= 255;
				if ( nSelectedGreenValue > 255 )		nSelectedGreenValue = 255;
				if ( nSelectedBlueValue	 > 255 )		nSelectedBlueValue	= 255;

				m_avLight[nCntY][nCntX].color =  RGB(nSelectedRedValue, nSelectedGreenValue, nSelectedBlueValue);
			}
		}
	}

	return TRUE;
}


BOOL CLightFog::SetLightRadiusWithCircle(INT XLightPos, INT YLightPos, INT nRadius, 
										 INT nRedValue, INT nGreenValue, INT nBlueValue, 
										 FLOAT rDrakRate)
{
	INT nX, nY;
	GetScreenPosToLightTile(XLightPos, YLightPos, &nX, &nY);

	INT nStartTileX			= nX - nRadius;
	INT nStartTileY			= nY - nRadius;
	INT nEndTileX			= nX + nRadius + 1;
	INT nEndTileY			= nY + nRadius + 1;

	// y甫 绵栏肺 秦辑 俩 绢滴款 何盒阑 备茄促.(x焊促 y啊 歹 利栏骨肺)
	nRadius = (nRadius*TILE_HEIGHT);

	DOUBLE rLengthCnt		= 0;
	INT nSelectedRedValue	= 0; 
	INT nSelectedGreenValue	= 0;
	INT nSelectedBlueValue	= 0;

	if ( nStartTileX < 0 )					nStartTileX = 0;
	if ( nStartTileY < 0 )					nStartTileY = 0;
	if ( nEndTileX > NUM_CNTX_LIGHTTILE+1 )	nEndTileX = NUM_CNTX_LIGHTTILE+1;
	if ( nEndTileY > NUM_CNTY_LIGHTTILE+1 )	nEndTileY = NUM_CNTY_LIGHTTILE+1;	

	for ( INT nCntY = nStartTileY; nCntY < nEndTileY; nCntY++ )
	{
		for ( INT nCntX = nStartTileX; nCntX < nEndTileX; nCntX++ )
		{			
			rLengthCnt	= sqrt((double)(XLightPos-(nCntX*TILE_WIDTH+TILE_START_XPOS))*(XLightPos-(nCntX*TILE_WIDTH+TILE_START_XPOS)) + 
							   (YLightPos-(nCntY*TILE_HEIGHT+TILE_START_YPOS))*(YLightPos-(nCntY*TILE_HEIGHT+TILE_START_YPOS)));
			if ( nCntX < NUM_CNTX_LIGHTTILE && nCntY < NUM_CNTY_LIGHTTILE )
			{
				// 器牢飘痢阑 器窃窍瘤 臼绰 谅窍. 器牢飘痢阑 器窃窍瘤 臼绰 快惑.
				if ( (nCntX > nX && nCntY < nY) || (nCntX < nX && nCntY > nY) )
				{
					WORD* pwIndex = ((WORD*)m_pwLightIndices+(nCntX+nCntY*(NUM_CNTX_LIGHTTILE))*6);
					*pwIndex++ = (nCntX)+((NUM_CNTX_LIGHTTILE+1)*nCntY);
					*pwIndex++ = (nCntX+1)+((NUM_CNTX_LIGHTTILE+1)*nCntY);  
					*pwIndex++ = (nCntX+1)+((NUM_CNTX_LIGHTTILE+1)*(nCntY+1));
					*pwIndex++ = (nCntX)+((NUM_CNTX_LIGHTTILE+1)*nCntY);
					*pwIndex++ = nCntX+((NUM_CNTX_LIGHTTILE+1)*(nCntY+1));  
					*pwIndex++ = (nCntX+1)+((NUM_CNTX_LIGHTTILE+1)*(nCntY+1));
				}
				else
				{
					WORD* pwIndex = ((WORD*)m_pwLightIndices+(nCntX+nCntY*(NUM_CNTX_LIGHTTILE))*6);
					*pwIndex++ = (nCntX+1)+((NUM_CNTX_LIGHTTILE+1)*nCntY);  
					*pwIndex++ = nCntX+((NUM_CNTX_LIGHTTILE+1)*(nCntY+1));  
					*pwIndex++ = (nCntX+1)+((NUM_CNTX_LIGHTTILE+1)*(nCntY+1));
					*pwIndex++ = nCntX+((NUM_CNTX_LIGHTTILE+1)*(nCntY+1));  
					*pwIndex++ = (nCntX+1)+((NUM_CNTX_LIGHTTILE+1)*nCntY);  
					*pwIndex++ = (nCntX)+((NUM_CNTX_LIGHTTILE+1)*nCntY);
				}
			}