RealityKit-Simple-Collision-Scene.swift

import SwiftUI

struct ContentView : View {
    var body: some View {
        return ARViewContainer().edgesIgnoringSafeArea(.all)
    }
}

struct ARViewContainer: UIViewRepresentable {
    
    func makeUIView(context: Context) -> ARView {
        
        let arView = ARView(frame: .zero)
        
        let config = ARWorldTrackingConfiguration()
        config.planeDetection = .horizontal
        arView.session.run(config, options: [])

        let box1 = CustomEntity(
          color: .yellow,
          position: [0.5,-1.5,-3]
        )

        arView.scene.anchors.append(box1)

        let box2 = CustomEntity(
          color: .green,
          position: [-0.5,-1.5, -3]
        )        

        arView.scene.anchors.append(box2)
        box1.addCollisions()
        arView.installGestures(.all, for: box1)

        return arView
        
    }
    
    func updateUIView(_ uiView: ARView, context: Context) {}
    
}