First of all, I made the same question on StackOverflow too, I hope this isn’t a problem. I know this question is not new, but all other topic are realy old and I can’t figure out how to fix it.
In my scene I have a node with a RigidBody component. This node have a child with the same RigidBody component. If I move my parent node, the child stay in the original position (if is static, or falls if it is dynamic). Whitout the physics all work as I expected.
There is a solution or a fix ? or is the logic wrong?
from the underlying physics engine perspective, a rigidbody as a child of another rigidbody doesn’t make sense (despite the fact that CC lets you do this). if you want a rigidbody to follow another rigidbody as if it were a child, use a joint (weld joint, for instance).
usually, when i work with a physics engine, i have this setup: have a “root physics node” (be it in cocos or flash or openfl) and every physics body (rigidbody) that belongs to the actual simulation is a direct child of the root, in a flat hierarchy. this way i’m mostly sure that i don’t run into weird bugs related to node transformations and, if debug needs to be done, it should be easier to inspect the hierarchy, because, well, it’s flat
(despite the fact that CC lets you do this). if you want a rigidbody to follow another rigidbody as if it were a child, use a joint (weld joint, for instance).