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Moving a pile of leaves with physics

Posted: Sun Feb 07, 2016 11:39 am
by PaperWaspNest
Hey Everyone -

I have a fun problem to solve. Take a look at the GIF of a scene I'm animating:

Image

The white area will soon be a pile of leaves on the ground. My character scoops them up and lifts some of them off the ground.
Now, I'm ready to just keyframe this in some way or another, but before I do that I want to consider using Physics (or Particles) to accomplish it. Especially because it would get a nice effect of a few leaves spilling off from his hands as he lifts.

Information on using physics for anything even close to this is hard to find (or old), so I wanted to ask. It seems I cannot have a keyframed animation affect a physics group in any way. My only option for "animating" anything "myself" is to use Physics Nudge repeatedly. So far, I am imagining a pile of leaves where each leaf "starts asleep". I then have some invisible bowl-shaped objects roughly the size and shape of this character's arms get "nudged" towards the leaves so the bowl-things pick the leaves up. I'd have to do this carefully so they match the keyframed bone animation I've already made here....

Is there a better way than that?

Re: Moving a pile of leaves with physics

Posted: Sun Feb 07, 2016 12:10 pm
by slowtiger
Once I did something like this FBF. Here's some points of interest:
- don't make all leaves too different to each other. Have one dominant colour, and only some leaves different from that (brighter). These will be the ones drawing attention, so these need to move more convincingly. Everything else can be pretty random.
So I'd try some particle generator with the uniform leaves, and some real physics on top of that (bright leaves).

Re: Moving a pile of leaves with physics

Posted: Sun Feb 07, 2016 1:43 pm
by PaperWaspNest
That's a good idea, having some "hero" leaves that hold the bulk of the animation work. I will try that :)