I tried to create a rigid body collision simulation based on this tuotorial.
I got totally lost at the point “Now move the cursor to the animated flag and press ‘I’ (this keyframe controls the animated flag)”. I figured out that this is supposed to calculate sphere moves for the rest of the frames, but what the heck is the “animated flag” and how can I control it like shown in the tutorial? Now I had to place the sphere again for each frame.
I’m using Blender 2.79b.