SceneKit SCNPhysicsBody 得到休息通知

问题描述

SceneKit当 dynamicBody 处于静止状态时，有没有办法得到通知?当 dynamicBody 落到地面并完全停止移动时，我想删除它 - 我认为我会有相当多的那些，所以我想使用基于事件的东西而不是遍历所有body 并检查它们的速度?

SceneKitIs there a way to get notified when dynamicBody is in resting State ?I want to remove dynamicBody when it finished to fall to the ground and stopped moving completely - I presume that I will have quite large amount of those so I would like to use something event based rather than looping through all the bodies and checking their velocities ?

推荐答案

您可以对 isResting 属性使用键值观察.请参阅 Swift 中是否提供键值观察 (KVO)?.

You could use Key-Value Observation on the isResting property. See Is key-value observation (KVO) available in Swift?.

或者您可以使用 SCNPhysicsContact 和 SCNPhysicsContactDelegate 来检测与地板的碰撞，并使用它来触发速度检查.

Or you could use the SCNPhysicsContact and SCNPhysicsContactDelegate to detect collisions with the floor, and use that to trigger a check for velocity.

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