1
我剛開始嘗試使用SceneKit。嘗試一個非常簡單的代碼來創建一個對象,分配物理給它一個點擊速度。到目前爲止,我能夠創建它,應用物理學。我能夠給它速度,但不能用水龍頭實現。我究竟做錯了什麼?我使用的是我在SpriteKit中使用的相同技術,但它在SceneKit中不起作用。請幫忙。SceneKit基礎知識
class GameViewController: UIViewController, SCNSceneRendererDelegate, SCNPhysicsContactDelegate {
let scene = SCNScene()
let shipNode = SCNNode()
let sceneView = SCNScene()
var cameraNode = SCNNode()
var floor = SCNFloor()
var floornod = SCNNode()
override func viewDidLoad() {
super.viewDidLoad()
let sceneView = self.view as SCNView
sceneView.scene = scene
sceneView.backgroundColor = SKColor.blueColor()
sceneView.showsStatistics = true
sceneView.scene?.physicsWorld.gravity = SCNVector3Make(0, -70, 0)
sceneView.scene?.physicsWorld.speed = 1.0
sceneView.delegate = self
sceneView.jitteringEnabled = true
sceneSetup()
sceneView.pointOfView = cameraNode
let ship = SCNScene(named: "art.scnassets/sphere.dae")!
let shipNode = ship.rootNode.childNodeWithName("Sphere", recursively: true)!
shipNode.position = SCNVector3Make(0, 50, 300)
shipNode.scale = SCNVector3Make(10, 10, 10)
shipNode.geometry?.firstMaterial?.diffuse.contents = UIImage(named: "ball.jpg")
shipNode.physicsBody = SCNPhysicsBody(type: SCNPhysicsBodyType.Dynamic, shape: nil)
shipNode.physicsBody?.restitution = 0.9
shipNode.physicsBody?.velocity = SCNVector3Make(0, 100, 10)
scene.rootNode.addChildNode(shipNode)
println(shipNode.physicsBody?.velocity.y)
}
override func touchesBegan(touches: NSSet, withEvent event: UIEvent) {
shipNode.physicsBody?.velocity = SCNVector3Make(0, 200, 20) // code not working
println(shipNode.physicsBody?.velocity.y) // prints nil instead of 200.00
}
func sceneSetup() {
cameraNode.camera = SCNCamera()
cameraNode.camera?.zNear = 0.01
cameraNode.camera?.zFar = 800
cameraNode.camera?.xFov = 45
cameraNode.camera?.yFov = 75
cameraNode.rotation = SCNVector4Make(1, 0, 0, -25 * 0.017453293)
cameraNode.position = SCNVector3Make(0, 150, 500)
scene.rootNode.addChildNode(cameraNode)
floornod.geometry = floor
floornod.geometry?.firstMaterial?.diffuse.contents = "wood1.png"
floornod.geometry?.firstMaterial?.locksAmbientWithDiffuse = true
floornod.geometry?.firstMaterial?.diffuse.wrapS = SCNWrapMode.Repeat
floornod.geometry?.firstMaterial?.diffuse.wrapT = SCNWrapMode.Repeat
floornod.geometry?.firstMaterial?.diffuse.mipFilter = SCNFilterMode.Linear
floornod.physicsBody = SCNPhysicsBody(type: SCNPhysicsBodyType.Static, shape: nil)
floornod.position = SCNVector3Make(0, 0, 0)
scene.rootNode.addChildNode(floornod)
}
}
第一個println給出了100.00的結果。 touchesBegan中的println每次點擊都會產生零結果。
任何幫助,非常感謝。謝謝。
哇。我不能相信我錯過了這一點。謝謝。有效! – Dman 2014-10-03 01:22:47