Example of a custom Entity for RealityKit

CustomBox.swift

class CustomBox: Entity, HasModel, HasCollision, HasAnchoring {

  /// Used to keeping a reference of any subscriptions involving this entity
  var entitySubs: [Cancellable] = []

  required init(color: UIColor) {
    super.init()

    // Shape of this entity for any collisions including gestures
    self.components[CollisionComponent] = CollisionComponent(
      shapes: [.generateBox(size: [1,0.2,1])],
      mode: .trigger,
      filter: .sensor
    )
    
    // Model of this entity, the physical appearance is a 1x0.2x1 cuboid
    self.components[ModelComponent] = ModelComponent(
      mesh: .generateBox(size: [1, 0.2, 1]),
      materials: [SimpleMaterial(
        color: color,
        isMetallic: false)
      ]
    )
  }
  
  convenience init(color: UIColor, position: SIMD3<Float>) {
    self.init(color: color)
    self.position = position
  }

  required convenience init() {
    self.init(color: .orange)
  }
}