Use physics in scene

Description

We will use physics in the scene. i.e gravity.

To do this we add a 2d horizontal plane to the scene and set PhysicsBody = SCNPhysicsBody.CreateKinematicBody().

Then we add 3d cubes at the location the user touches the screen and make it so they mimic gravity using PhysicsBody = SCNPhysicsBody.CreateDynamicBody().

We can see that the cubes are able to fall off the 2d plane.

Video

Code