如何在SceneKit中检测GKComponent中两个GKEntities(SCNNodes)之间SCNPhysics交集

import SceneKit
import GameplayKit

class IntersectionComponent: GKComponent {
    override func update(deltaTime seconds: TimeInterval) {
        guard let entity = entity, let node = entity.component(ofType: GKSCNNodeComponent.self)?.node else {
            return
        }
        
        // 获取场景中的物理世界
        guard let physicsWorld = node.scene?.physicsWorld else {
            return
        }
        
        // 检测与其他物体的交集
        let intersectingNodes = physicsWorld.contactTest(with: node.physicsBody!, options: nil)
        
        for intersectingNode in intersectingNodes {
            // 处理交集的物体
            if let intersectingEntity = intersectingNode.entity, intersectingEntity != entity {
                // 执行相应的操作
                print("Intersection detected between \(entity) and \(intersectingEntity)")
            }
        }
    }
}

// 创建两个GKEntities
let entity1 = GKEntity()
let entity2 = GKEntity()

// 创建SCNNode并添加到GKEntity中
let node1 = SCNNode()
let node2 = SCNNode()
entity1.addComponent(GKSCNNodeComponent(node: node1))
entity2.addComponent(GKSCNNodeComponent(node: node2))

// 为每个GKEntity的SCNNode添加SCNPhysicsBody组件
node1.physicsBody = SCNPhysicsBody(type: .dynamic, shape: SCNPhysicsShape(node: node1, options: nil))
node2.physicsBody = SCNPhysicsBody(type: .dynamic, shape: SCNPhysicsShape(node: node2, options: nil))

// 添加IntersectionComponent到GKEntity中
entity1.addComponent(IntersectionComponent())
entity2.addComponent(IntersectionComponent())

// 将GKEntities添加到场景中
let scene = SCNScene()
scene.rootNode.addChildNode(node1)
scene.rootNode.addChildNode(node2)

// 运行场景
let view = SCNView(frame: CGRect(x: 0, y: 0, width: 500, height: 500))
view.scene = scene
view.isPlaying = true