[quote="Ashley":vg4aoxyo]Adrix89 is right, a magnify shader can do explosion "shockwaves" like that. Black doesn't zoom at all and while zooms a lot, so I guess you'd just draw a greyscale shockwave and resize it really big, while fading it out with opacity.
[quote="deadeye":vg4aoxyo]So, how does the light work?[/quote:vg4aoxyo]
It's done by shader parameters so it's not quite so easy as having a sprite, and at the moment it's also in texture coordinates which makes it a little fiddly, but it works. I'll see if I can make it a bit easier to use.[/quote:vg4aoxyo]
I just tested this trick, it worked! However to achieve the full effect you'd need to change the object's size on the fly using an animated sprite.