cspety.cpp

成熟的RPG引擎,Flysky发布. 斜视角引擎.

#include <ddraw.h>
#include "CSpety.h"
#include "CDraw.h"
#include "CAlpha.h"


void CSpety::Grays(LPDIRECTDRAWSURFACE7 SS)
{
	//灰度算法
	//算法思想来自:http://www.goufun.com/gpgame/docs/program/rgb2gray_2.htm
	//R = G = B = 0.3R + 0.6G + 0.1B; //第二版改正后的公式
	BeginDraw(SS); //Sour锁屏
	WORD *pSour=GraphBuffer;
	int Pitch=GraphPitch;
	int Width=GraphWidth;//宽度
	int Height=GraphHeight; //高度
	int sy,r,g,b;
	WORD Color;
	for (int y=0;y<Height;y++)
	{
		sy=y*Pitch;
		for(int x=0;x<Width;x++)
		{
			if (Is555==true)
			{
				r=pSour[sy+x]>>10;
				g=(pSour[sy+x]&GMask5)>>5;
			}
			else
			{
				r=pSour[sy+x]>>11;
				g=(pSour[sy+x]&GMask6)>>6;
			}
			b=pSour[sy+x]&BMask;
			Color=(3*r+6*g+b)>>1;
			//24　
			pSour[sy+x]=RGB16(Color,Color,Color);
		}
	}
	EndDraw(SS);
}

void CSpety::Dusks(LPDIRECTDRAWSURFACE7 SS)
{
	BeginDraw(SS); //Sour锁屏
	WORD *pSour=GraphBuffer;
	int Pitch=GraphPitch;
	int Width=GraphWidth;//宽度
	int Height=GraphHeight; //高度
	int sy,r,g,b;
	for (int y=0;y<Height;y++)
	{
		sy=y*Pitch;
		for(int x=0;x<Width;x++)
		{
			if (Is555==true)
			{
				r=pSour[sy+x]>>10;
				g=(pSour[sy+x]&GMask5)>>5;
			}
			else
			{
				r=pSour[sy+x]>>11;
				g=(pSour[sy+x]&GMask6)>>6;
			}
			b=pSour[sy+x]&BMask;
			//24　
			pSour[sy+x]=RGB16(7*r,4*g,7*b);
		}
	}
	EndDraw(SS);
}
void CSpety::Glares(LPDIRECTDRAWSURFACE7 SS)
{
	BeginDraw(SS); //Sour锁屏
	WORD *pSour=GraphBuffer;
	int Pitch=GraphPitch;
	int Width=GraphWidth;//宽度
	int Height=GraphHeight; //高度
	EndDraw(SS);
	CreateSurface(AlphaDDS,NULL,Width,Height);
	Clrscr(AlphaDDS,RGB16(255,255,255));
	AlphaS(SS,AlphaDDS,Glare_Value,NULL);
	if (AlphaDDS!=NULL)
	{
		AlphaDDS->Release();
		AlphaDDS=NULL;
	}
}
void CSpety::Show(LPDIRECTDRAWSURFACE7 SS)
{
	if (Gray==true) Grays(SS);
	else if (Dusk==true) Dusks(SS);
	else if (Glare==true) Glares(SS);
}
void CSpety::SetSpety(int ID,bool FT) //设定一个特效
{
	if (ID==0) Gray=FT;
	else if(ID==1) Glare=FT;
	else if(ID==2) Dusk=FT;
}