Base class for all 3D joints.
Joints are used to bind together two physics bodies. They have a solver priority and can define if the bodies of the two attached nodes should be able to collide with each other.
bool collision/exclude_nodes =
true, the two bodies of the nodes are not able to collide with each other.
NodePath nodes/node_a =
The node attached to the first side (A) of the joint.
NodePath nodes/node_b =
The node attached to the second side (B) of the joint.
int solver/priority =
The priority used to define which solver is executed first for multiple joints. The lower the value, the higher the priority.