void Fog::operator()(SDL_Surface * s)
{
//Create Layer Mask and fill it with Black
SDL_PixelFormat * format = s->format;
SDL_Surface * mask = SDL_CreateRGBSurface( SDL_HWSURFACE | SDL_SRCALPHA, s->w, s->h, 32,
format->Rmask, format->Gmask, format->Bmask, format->Amask);
SDL_FillRect( mask, NULL, 0 );
//Create Clouds
Plasma plasma_effect(m_lSeed , 1.0);
plasma_effect(mask);
GreyScale greyScale_effect;
greyScale_effect(mask);
//Apply Mask on Surface
for(int i=0; i< s->w; i++)
for(int j=0; j< s->h; j++)
{
Color sC;// = get_pixel(s, i, j);
Color mC = get_pixel(mask, i, j);
sC = m_Color;
sC.a = mC.r;
set_pixel(s, i, j, sC);
}
}
void do_periodic_task( void )
{
if ( frames > 5000 ) plasma_effect( );
else enter_the_matrix( );
if ( ++frames > 5100 ) frames = 0;
}
