Я создал функцию обнаружения столкновений для трех кнопок и пола UIImageView
, но я получаю ошибку «Ожидаемая декларация» в строке кода if !isRotating
. Немного помогло бы здорово.Обнаружение столкновений в iOS Swift
import UIKit
class ViewController: UIViewController {
var location = CGPoint(x: 0, y: 0)
var animator: UIDynamicAnimator?
var gravity: UIGravityBehavior?
var isRotating = false
var collision: UICollisionBehavior!
@IBOutlet var Ball1: UIButton!
@IBOutlet var Ball2: UIButton!
@IBOutlet var Ball3: UIButton!
@IBOutlet var Floor: UIImageView!
override func viewDidLoad() {
super.viewDidLoad()
self.animator = UIDynamicAnimator(referenceView: self.view)
let gravity = UIGravityBehavior (items: [self.Ball1!, self.Ball2!, self.Ball3!])
let direction = CGVectorMake(0.0, 1.0)
gravity.gravityDirection = direction
self.animator?.addBehavior(gravity)
Ball1.center = CGPointMake(160, 330)
Ball2.center = CGPointMake(39, 163)
Ball3.center = CGPointMake(240, 74)
collision = UICollisionBehavior(items: [Floor!, Ball1!, Ball2!, Ball3!])
collision.translatesReferenceBoundsIntoBoundary = true
collision.addBoundaryWithIdentifier("barrier", fromPoint: CGPointMake(self.view.frame.origin.x, 350), toPoint: CGPointMake(self.view.frame.origin.x + self.view.frame.width, 350))
animator!.addBehavior(collision)
}
if !isRotating {
// create a spin animation
let spinAnimation = CABasicAnimation()
// starts from 0
spinAnimation.fromValue = 0
// goes to 360 (2 * π)
spinAnimation.toValue = M_PI*2
// define how long it will take to complete a 360
spinAnimation.duration = 1
// make it spin infinitely
spinAnimation.repeatCount = Float.infinity
// do not remove when completed
spinAnimation.removedOnCompletion = false
// specify the fill mode
spinAnimation.fillMode = kCAFillModeForwards
// and the animation acceleration
spinAnimation.timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionLinear)
// add the animation to the button layer
Ball1.layer.addAnimation(spinAnimation, forKey: "transform.rotation.z")
Ball2.layer.addAnimation(spinAnimation, forKey: "transform.rotation.z")
Ball3.layer.addAnimation(spinAnimation, forKey: "transform.rotation.z")
} else {
// remove the animation
Ball1.layer.removeAllAnimations()
Ball2.layer.removeAllAnimations()
Ball3.layer.removeAllAnimations()
}
// toggle its state
isRotating = !isRotating
}
Это сработало! Спасибо, 2Straw! :))) – Xcoder555