i've been googling and reading through tutorials but can't seem to find what i would like to do, hoping for some help!
it is possible to make a rigid joint or limited range joint that can move freely when the user is pressing keys? or something that can simulate it (eg. with invisible shafts).
examples i'm thinking of are human joints that become rigid when not in motion (standing), or a way to simulate how muscles in a leg work or even something mechanical like a crane.