In scene kit, adding a physics body manually (in code) to a node, seems to not work? You have to add the physics body in the editor?

Question

It seems you just can't add a physics body in code.

Not much more can be said than this, has anyone found this issue?

Some example code ...

class SomeSceneView:  SCNView {
    public var box: SCNNode!
    
    .. 

    var physBody = SCNPhysicsBody()
    
    private func bringup() {
        box = scene?.rootNode.childNode(withName: "box", recursively: true)
        
        physBody.type = .dynamic
        physBody.isAffectedByGravity = false
        physBody.friction = 0

        box.physicsBody = physBody

        rendersContinuously = true
        play(nil)
    }
}

Any experience with this?

score 3 · Accepted Answer · answered Dec 20 '22 at 15:12

3

You need also to file a SCNPhysicsShape.

Try something like this:

func makeNode() {
    let node = SCNNode(geometry: SCNSphere(radius: 1.0))
    ...
    node.physicsBody = SCNPhysicsBody(type: .dynamic, shape: SCNPhysicsShape(geometry: node.geometry, options: nil))
    ...
    scene.rootnode.addChildNode(node)
}

answered Dec 20 '22 at 15:12

ZAY

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that could be it! checking !!!!!! – Fattie Dec 20 '22 at 15:45
did it work for you? – ZAY Dec 28 '22 at 08:33
1

YES - BRILLIANT - BOUNTY EN ROUTE – Fattie Dec 28 '22 at 14:22
I have no words.... - thank you! – ZAY Dec 28 '22 at 15:30
! here's one, @zay ! https://stackoverflow.com/questions/75009992 – Fattie Jan 04 '23 at 18:55

In scene kit, adding a physics body manually (in code) to a node, seems to not work? You have to add the physics body in the editor?

1 Answers1