self shadow bump mapping

void RendererLightBM(int x,int y,int r)
	{
		for(int py=y-r;py<y+r;py+=1)
		{
			for(int px=x-r;px<x+r;px+=1)
			{  
				float r2=1-sqrt( (px-x)*(px-x)+(py-y)*(py-y))/float(r);
				if(r2<0)
					r2=0;
				if(r2>1)
					r2=1;
				if(r2>0)
				{

				unsigned char red;
				unsigned char green;
				unsigned char blue;

				unsigned char leftred,leftgreen,leftblue;
				unsigned char rightred,rightgreen,rightblue;
				unsigned char upred,upgreen,upblue;
				unsigned char downred,downgreen,downblue;
				float left,right,up,down;
				float poziom,pion;
				GetPixel(px-1,py,leftred,leftgreen,leftblue);
				GetPixel(px+1,py,rightred,rightgreen,rightblue);
				GetPixel(px,py-1,upred,upgreen,upblue);
				GetPixel(px,py+1,downred,downgreen,downblue);

				left=float(float(leftred)/255+float(leftgreen)/255+float(leftblue)/255)/3;
				right=float(float(rightred)/255+float(rightgreen)/255+float(rightblue)/255)/3;
				up=float(float(upred)/255+float(upgreen)/255+float(upblue)/255)/3;
				down=float(float(downred)/255+float(downgreen)/255+float(downblue)/255)/3;

				poziom=(left+right)/2;
				pion=(up+down)/2;
				float lenght=sqrt(poziom*poziom+pion*pion);
				poziom=poziom/lenght;
				pion=pion/lenght;
				float lightDirX,lightDirY;
				lightDirX=x+r;
				lightDirY=y+r;
				lightDirX=lightDirX-px;
				lightDirY=lightDirY-py;
				lenght=sqrt(lightDirX*lightDirX+lightDirY*lightDirY);
				lightDirX=lightDirX/lenght;
				lightDirY=lightDirY/lenght;
				float S=lightDirX*poziom+lightDirY*pion;
				if(S<0)
					S=0;
				if(S>1)
					S=1;
				GetPixel(px,py,red,green,blue);
				float r1,g1,b1;

				r1=float(red)/255;
				g1=float(green)/255;
				b1=float(blue)/255;
		
				float r,g,b;
				r=r1;
				g=g1;
				b=b1;
				
				
				r1=r1*S*r2*r1*2+r1;
				g1=g1*S*r2*g1*2+g1;
				b1=b1*S*r2*b1*2+b1;

				if(r1<r)
					r1=r;
				if(g1<g)
					g1=g;
				if(b1<b)
					b1=b;

				if(r1>1)
					r1=1;
				if(g1>1)
					g1=1;
				if(b1>1)
					b1=1;
				unsigned char rW=r1*255;
				unsigned char gW=g1*255;
				unsigned char bW=b1*255;
				
			
				Color3iT(rW,gW,bW);
				PutPixelT(px,py);
				}

			}
		}
	}

id_progressbarS = LoadImage("gfx/pb.bmp");
id_progressbarS = LoadImage("gfx/pb.bmp");
id_progressbarE = LoadImage("gfx/pbend.bmp");
id_zegar = LoadImage("gfx/zegar.bmp");
id_zegarbig = LoadImage("gfx/zegar_big2.bmp");

argument of type "const char *" is incompatible with parameter of type "char *"
argument of type "const char *" is incompatible with parameter of type "char *"
argument of type "const char *" is incompatible with parameter of type "char *"
argument of type "const char *" is incompatible with parameter of type "char *"
argument of type "const char *" is incompatible with parameter of type "char *"

int id_texture = draw.LoadImage((char*)"obraz.bmp");
int id_cyfry = draw.LoadImage((char*)"cyfry_czcionka.bmp");
int id_texture2 = draw.LoadImage((char*)"obraz2.bmp");
int id_komputer = draw.LoadImage((char*)"komputer.bmp");
int id_kolo = draw.LoadImage((char*)"kolo.bmp");

// otwiera plik w trybie "read binary"
filePtr = fopen(filename, "rb");
if (filePtr == NULL)
	return NULL;

Error	55	C4996	'fopen': This function or variable may be unsafe. Consider using fopen_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details

// otwiera plik w trybie "read binary"
if (fopen_s(&filePtr, filename, "rb") != 0 || filePtr == NULL)
	return NULL;

if (kbhit())
{
	char znak = getch();
	if (znak == 27)
		done = true;
	if (znak == 97)
		x -= speed;
	if (znak == 100)
		x += speed;

	if (znak == 119)
		y -= speed;
	if (znak == 115)
		y += speed;
}

'kbhit': The POSIX name for this item is deprecated. Instead, use the ISO C and C++ conformant name: _kbhit. See online help for details.
'getch': The POSIX name for this item is deprecated. Instead, use the ISO C and C++ conformant name: _getch. See online help for details.

if (_kbhit())
{
	char znak = _getch();
	if (znak == 27)
		done = true;
	if (znak == 97)
		x -= speed;
	if (znak == 100)
		x += speed;

	if (znak == 119)
		y -= speed;
	if (znak == 115)
		y += speed;
}