Is it possible (how?) to hide a light effect with a 2D sprite?

Hello Friends,

I have quite a simple setup, no scripts or anything: - A 2D Sprite (a Door) - A Spotlight with the default Small Flare effect

Spotlight is at Z -1, door is at 1 but the light is still fully visible although it should be hidden behind the door.

What I'd like to achieve is an light-in-camera effect when the (2D!) door opens (simple sprite animation) - sadly, I can't make that door block the light in the first place.

Now I'm thinking about controlling the light through a script as well (turning on and getting brighter throughout the animation, but I'm really interested how it's possible to achieve this without fiddling with the animation timings by hand.

Thanks a lot!