SCNAction 后节点失去重力

Question

我想放下一个 object 然后将它移回顶部并让它再次落下。第一部分工作正常，但随后节点似乎失去了重力并且不再下落。看起来它的物理 body 停留在地板上并且没有被 SCNActions 移动。解决方案是什么？谢谢

    let shape = SCNPhysicsShape(geometry: SCNBox(width: boxSize, height: 0.001, length: boxSize, chamferRadius: 0), options:nil)
    node.physicsBody = SCNPhysicsBody(type: .dynamic, shape: shape)
    ...
    SCNTransaction.begin()
    SCNTransaction.animationDuration = 5 
    let actions = SCNAction.sequence([
        SCNAction.move(to: SCNVector3(x: 0, y: 3, z: -2), duration: 1),
        SCNAction.rotate(by: .pi*2, around: SCNVector3(0,1,0), duration: 1)
    ])
    node.runAction(actions)
    //node.presentation.runAction(actions) //also not working
    SCNTransaction.commit()

Answer 1

您必须通过调用 -resetTransform 让物理模拟知道物理体已经移动。

SCNAction 后节点失去重力

Node losing gravity after SCNAction

ios

scenekit

scnnode