FREQ - Light flicker

[adam-law]

I was thinking that it would be possible to simulate flickering lights, particularly for flame-like lights if light offsets could have options to be tied to box2d horizontal gravity, or have this effect be done internally in box2dlights. I know it's quite possible to do the offset calculation outside of box2dlights, but it'd be convenient if it's built in, so that everything is neatly tied to one render step.

[piotr-j]

Feels like something trivial to implement with Light#setDistance() unless im missing something obvious.