I thought I would show off something on the forums for a change.
As part of my game project, I wanted to make some sort of alien growth, similar to what you see in Natural Selection 2, and the Aliens movie.
While this is not a very efficient method of making the growth, it does convey the idea.
The growth basically just sends out a bunch of line traces in random directions, creates a new growth at that location and a decal, nothing too fancy happening here.
Each growth can only grow 2 more growth objects to avoid crazy, over the top, exponential growth.
After 10 seconds, the growth stops all other growth objects from spawning any more growth objects, then after about 1-2 seconds, picks a new growth object (at the moment, it is furthest distance, which presents some issues) to start growing more growth objects again.
This probably took me about 2 days to do. Most of the time I spent just fiddling around with decals, trying to make them work when being projected onto emissive materials, which eventually I just gave up on trying to do, and made it so the growth pops the lights out, disabling the emissive, and avoiding the problem.