当父节点移动时，SceneKit Child Physicsbody 不移动答案

【问题标题】：SceneKit Child Physicsbody not moving when parent node is moving当父节点移动时，SceneKit Child Physicsbody 不移动
【发布时间】：2018-10-06 00:53:30
【问题描述】：

我有 2 个简单的节点（2 个球：一个在另一个之上且不接触），每个节点都有一个具有相同特征的物理体。下面是父节点，上面是子节点。

当我对父节点施加力时，两个节点都在移动，但子节点的物理体不移动。我激活了showphysicsshape选项，我看到孩子的physicsbody停留在原来的地方。

我错过了什么吗？

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)
    }
}

【问题讨论】：

是不是因为你的子节点的Mask和父节点不同？
不。尝试使用相同的掩码和相同的问题

标签： ios swift scenekit

【解决方案1】：

您可以使用func resetTransform() 方法使物理体匹配它的节点，但这会消耗一些性能：https://developer.apple.com/documentation/scenekit/scnphysicsbody/1514782-resettransform

【讨论】：