swift - 如何根据要求在 SceneKit 中添加动画

Question

如果您能帮我将此动画添加到场景中，或者您知道如何将动画添加到场景中，将不胜感激。

代码:

let BallScene = SCNScene(named: "art.scnassets/Ball.dae")!
let ManScene = SCNScene(named: "art.scnassets/Genric_Simplifiyed9.dae")!
let Man: SCNNode = ManScene.rootNode.childNodeWithName("Bob_001", recursively: true)!
Man.position = SCNVector3(x: 0, y: 0, z: 5)
BallScene.rootNode.addChildNode(Man)

let Animation: CAAnimation
let AnimationUrl: NSURL = NSBundle.mainBundle().URLForResource("art.scnassets/Genric_Simplifiyed9.dae", withExtension: "dae")!
let sceneSource = SCNSceneSource(URL: AnimationUrl, options: [SCNSceneSourceAnimationImportPolicyKey : SCNSceneSourceAnimationImportPolicyDoNotPlay])

sceneSource.addAnimation(attackAnimation, forKey: "attack”)

Answer 1

如果您有带动画的 DAE/COLLADA 文件，您只需单击播放按钮即可在 Storyboard中播放动画。然后你就可以

let subScene = SCNScene(named: "art.scnassets/test_ball_2011.dae")!
let childNodes = subScene.rootNode.childNodes
for child in childNodes {
    //child.position = SCNVector3(0, 0, -100)
    rootScene.rootNode.addChildNode(child)
}

动画将在您的 rootScene 中播放

你可以使用

for child in childNodes {
   let keys = child.animationKeys
   child.position = SCNVector3(0, 0, -100)
   for key in keys {
       let animation = child.animationForKey(key)!
       animation.repeatCount = 5
       child.removeAnimationForKey(key) 
       child.addAnimation(animation, forKey: key)
   }
   rootScene.rootNode.addChildNode(child)

设置位置或重复次数...

另一种方式类似于您的代码:你可以使用

let url = NSBundle.mainBundle().URLForResource(/* your DAE file */)
let sceneSource = SCNSceneSource(URL: url, options: [
        SCNSceneSourceAnimationImportPolicyKey : SCNSceneSourceAnimationImportPolicyPlayRepeatedly
])!

要获取源代码并在选项中可以设置很多东西，只需检查 API并使用

let node = sceneSource.entryWithIdentifier("/* the node name */", withClass: SCNNode.self)
let animation = sceneSource.entryWithIdentifier("/* the animation name */", withClass: CAAnimation.self)

获取节点和动画。如果这两个文件在不同的文件中，只需制作 2 个源即可:)最后一件事是 node.addAnimation(animation, forKey: nil)//检查 API