So I've been in animation a long time but am new'ish to Blender.
Two things I cannot seem to do are fairly simple to code:
Firstly, I need particles to emit particles when they hit a surface.
Secondly, If I have a particle system, the particles must have a direction so how do you get this to drive instanced object direction?
I am massively simplifying these questions, but thats what they need. I have had several needs for the second one, say arrows showing the flow of fluid / gas / electrons, and the first is just where I want a sprite flash to appear where a glowing line hits a wall - I'm copying a 1982 hand drawn animation, surely we can do these basic things in 2020?! :o)
Thanks in advance