Increase color depth

From 16bits to 32bits.

Nowaday, every screen supports 32bits color depth.

Interestingly, color of life bar changed from green to orange.

main.cpp

@@ -27,11 +27,11 @@ int main ( int argc, char** argv )
     SDL_Surface* screen =0;
     if(optionsFire::pleinEcran)
     {
-        screen = SDL_SetVideoMode(640, 480, 16,SDL_HWSURFACE|SDL_DOUBLEBUF|SDL_FULLSCREEN);//Création de la fenêtre plein ecran
+        screen = SDL_SetVideoMode(640, 480, 32,SDL_HWSURFACE|SDL_DOUBLEBUF|SDL_FULLSCREEN);//Création de la fenêtre plein ecran
     }
     else
     {
-        screen = SDL_SetVideoMode(640, 480, 16,SDL_HWSURFACE|SDL_DOUBLEBUF);//Création de la fenêtre
+        screen = SDL_SetVideoMode(640, 480, 32,SDL_HWSURFACE|SDL_DOUBLEBUF);//Création de la fenêtre
     }
 
     SDL_WM_SetCaption("Fire !!!",NULL);//Nom de la fenêtre