當父節點移動時，SceneKit子物理體不移動

Question

我有2個簡單節點（2個球：一個在另一個上方，並且沒有接觸），每個節點都具有相同的物理特征。 下面的一個是父節點，上面的一個是子節點。

當我對父節點施加力時，兩個節點都在移動，但子節點的物理體卻不移動。 我已激活showphysicsshape選項，並且看到孩子的Physicalbody停留在原始位置。

我想念什么嗎？

Class Character3DClass: CharacterClass
{        
    var CharacterNode: SCNNode!
    var CenterBody: SCNNode!

    func InitChar()
    {
        InitBodyParentNode()
        AddCenterBody()
    }

    func InitBodyParentNode()
    {
        CharacterNode.physicsBody = SCNPhysicsBody(type: .dynamic, shape: SCNPhysicsShape(node: CharacterNode, options: [:]))
        CharacterNode.physicsBody?.isAffectedByGravity = false
        CharacterNode.physicsBody?.mass = 1
        CharacterNode.physicsBody?.charge = 0
        CharacterNode.physicsBody?.friction = 0
        CharacterNode.physicsBody?.rollingFriction = 0
        CharacterNode.physicsBody?.restitution = 0
        CharacterNode.physicsBody?.damping = 0
        CharacterNode.physicsBody?.angularDamping = 0

        // Affectation des caractéristiques pour la gestion des collisions
        CharacterNode.physicsBody?.categoryBitMask = eNodePhysics.Player.rawValue
        CharacterNode.physicsBody?.contactTestBitMask = eNodePhysics.Player.rawValue | eNodePhysics.Ennemy.rawValue
        CharacterNode.physicsBody?.collisionBitMask = eNodePhysics.TileBorder.rawValue
    }

    func AddCenterBody()
    {
        CenterBody = SCNNode(geometry: Level3D.Dot.geometry)
        CenterBody.categoryBitMask = eNodePhysics.PlayerCenter.rawValue
        CenterBody.position = SCNVector3.init(0, 3, 0)
        CenterBody.scale = SCNVector3.init(0.4, 0.4, 0.4)

        CenterBody.physicsBody = SCNPhysicsBody(type: .dynamic, shape: SCNPhysicsShape(geometry: CenterBody.geometry!, options: nil))
        CenterBody.physicsBody?.isAffectedByGravity = false
        CenterBody.physicsBody?.mass = 1
        CenterBody.physicsBody?.charge = 0
        CenterBody.physicsBody?.friction = 0
        CenterBody.physicsBody?.rollingFriction = 0
        CenterBody.physicsBody?.restitution = 0
        CenterBody.physicsBody?.damping = 0
        CenterBody.physicsBody?.angularDamping = 0

        CenterBody.physicsBody?.categoryBitMask = eNodePhysics.PlayerCenter.rawValue
        CenterBody.physicsBody?.contactTestBitMask =  eNodePhysics.PlayerCenter.rawValue
        CenterBody.physicsBody?.collisionBitMask = eNodePhysics.NoValue.rawValue

        CharacterNode.addChildNode(CenterBody)
    }
}

Answer 1

您可以使用func resetTransform()方法使物理主體與它的節點匹配，但是會降低性能： https : //developer.apple.com/documentation/scenekit/scnphysicsbody/1514782-resettransform