Wireframe Wave Reveal effect

Hello, My teams programmer seems to be struggling on implementing a feature. What we're trying to do: We want it so that where you move a pulse emits from the character, causing a wireframe wave type of thing?

So it's pitch black and it's more of a wave revealing it.

What we've tried: We've added an animation to the character similar to a pulse emiting from the player. The problem we then had was that it wasn't a wave reveal, it was more of a walk near it and you see it. (We also added wireframe material onto the objects that need to be effected).

We've thought of many ways to this but seem to be running into problems on the way. I really hope someone can help, Best regards.

p.s. Similar to this game: https://www.youtube.com/watch?v=zHIACxrmwaM