For Flicker of Hope (formerly WICK), we wanted of mean character Jean, a living candle, to singe the areas above him. This effect is achieved using animated decals, which render on objects Jean is within range of. As time passes, the singe grows from a small black sot mark into a full smoldering ember spot.
The effect can also be seen from above, giving the player more visibility of Jean's location when hiding under objects in the environment.
Effect Demo
Demo 2
The effect reacting in the Confessional area
The effect reacting on top of objects