How do you handle physics-based object collisions in SceneKit?

Problem Faced:
Physics-based collisions often produce unexpected behavior, such as objects passing through each other or unstable physics simulations.

Solution:

• Define correct physics categories using SCNPhysicsBody and SCNPhysicsContactDelegate.
• Enable continuous collision detection by setting physicsBody?.isContinuousCollisionDetectionEnabled = true.
• Adjust physics properties like restitution, mass, and friction for stability.
• Use SCNPhysicsShape for custom collision boundaries.

let box = SCNNode(geometry: SCNBox(width: 1, height: 1, length: 1, chamferRadius: 0))
box.physicsBody = SCNPhysicsBody(type: .dynamic, shape: SCNPhysicsShape(node: box, options: nil))
scene.rootNode.addChildNode(box)

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