Restricting collision

By default, any Manipulable object can interact with any other Item type node.

To avoid confusion, you should restrict the list of objects that can interact with a manipulated node.

For example, when using a screwdriver, you might allow it to interact only with screws, rather than with everything.

To restrict collision

• Use the manipulable interactWith parameter to declare all and only those objects that the node can collide with. A null field means the node can collide with everything.