picturegroup.cpp

这个例子告诉你2d Arpg游戏中的动态阴影如何生成

// PictureGroup.cpp: implementation of the PictureGroup class.
//
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "PictureGroup.h"
#include <Mmsystem.h>
#include "log.h"
#include <stdio.h>
#include "EasyDraw.h"
#include "Map.h"
extern EasyDraw theEasyDraw;
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

PictureGroup::PictureGroup()
{
	frame=1;
	Depth=32;
	count=0;
	lastcount=-1;
}

PictureGroup::~PictureGroup()
{

}

void PictureGroup::Init(char *Filename,int Buildx,int Buildy)
{
	this->buildingx=Buildx;
	this->buildingy=Buildy;
	//	busurface.CreateImageSurface("iron_barrier_02.bmp",96,99,DDBLTFAST_NOCOLORKEY);
	temp.CreateImageSurface(Filename,false,false,DDBLTFAST_NOCOLORKEY);
	for(int i=0;i<8;i++)
		for(int j=0;j<15;j++)
		{
			Surface* npc=new Surface();
			npc->CreateNullSurface(74,77,false,false,DDBLTFAST_NOCOLORKEY);
			RECT rect={j*74,i*77,(j+1)*74,(i+1)*77};
			temp.BltTo(0,0,npc,&rect);
			npc->SetSurfaceColorKey(0x0000);
			m_SurfaceArray.push_back(npc);
		}
	lastTick=timeGetTime();
	log::instance().dump("pict.cpp","487");
}


inline void BrightnessAndContrast3(int& red,int& green,int& blue,
		int contrast,int brightness)
{
		static int old_c = 0,old_b = 0;
		static int extra_c = 0;
		static float ratio = 0;
		if( contrast!=old_c ) 
		{
			ratio = (float)contrast/100; 
			extra_c = -127*ratio;
			old_c = contrast;
		}
		if( brightness!=old_b) 
		{
			extra_c += brightness;
			old_b = brightness;
		}

		red		-= red*ratio	+ extra_c;
		green	-= green*ratio	+ extra_c;
		blue	-= blue*ratio	+ extra_c;

		if(red>255) red=255;
		if(green>255) green=255;
		if(blue>255) blue=255;

		if(red<0) red=0;
		if(green<0) green=0;
		if(blue<0) blue=0;
}

inline void BrightnessAndContrast(int& red,int& green,int& blue,
		int contrast,int brightness)
{
		static int old_c = 0,old_b = 0;
		static int extra_c = 0;
		static float ratio = 0;
		if( contrast!=old_c ) 
		{
			ratio = (float)contrast/100; 
			extra_c = -127*ratio;
			old_c = contrast;
		}
		if( brightness!=old_b) 
		{
			extra_c += brightness;
			old_b = brightness;
		}

		red		+= red*ratio	+ extra_c;
		green	+= green*ratio	+ extra_c;
		blue	+= blue*ratio	+ extra_c;

		if(red>255) red=255;
		if(green>255) green=255;
		if(blue>255) blue=255;

		if(red<0) red=0;
		if(green<0) green=0;
		if(blue<0) blue=0;
}

#define _MY16RGB565(r,g,b) ((b>>3) + ( (g>>2)<< 5 ) + ( (r>>3)<<11 ))

void PictureGroup::ShowBuilding(POINT view)
{
	LPDIRECTDRAWSURFACE7  temp;
	LPDIRECTDRAWSURFACE7 back;

	back = GetEasyDrawPointer()->GetBackSurface();
	temp = GetEasyDrawPointer()->GetTempSurface();
	if((timeGetTime()-lastTick)>50)
	{
		frame++;
		if((frame%4)==0)
		{
	//		buildingy+=10;
		}
		frame=frame%120;
		lastcount=count;
		count++;
		lastTick=timeGetTime();
	//	log::instance().dump("pict.cpp",str);
	}
//		sprintf(str,"y=%d",y);
//		log::instance().dump("pict.cpp",str);
	if(view.x>(this->buildingx+this->m_SurfaceArray[frame]->GetWidth()))
	{
		return;
	}
	if(view.y>(this->buildingy+this->m_SurfaceArray[frame]->GetHeight()))
	{
		return;
	}
	int renderx=100;
	int rendery=100;

	this->m_SurfaceArray[frame]->DrawAlphaShadow(buildingx,buildingy);
	this->m_SurfaceArray[frame]->DrawAutoClip(buildingx,buildingy);
	//把后台页面的矩形拷贝到特效页面上


}