oaleeapp · January 20, 2017 19:05 · Jan 20, 2017
diff --git a/DynamicWorld b/DynamicWorld
@@ -0,0 +1,79 @@
+
+import UIKit
+import PlaygroundSupport
+
+
+
+class physicViewController : UIViewController {
+
+
+    lazy var dynamicAnimator: UIDynamicAnimator = {
+
+        return UIDynamicAnimator(referenceView: self.view)
+    }()
+
+    lazy var cube: UIView = {
+
+        let cube = UIView(frame: CGRect(origin: CGPoint(x: 100.0, y: 100.0), size: CGSize(width: 100.0, height: 100.0)))
+        cube.backgroundColor = UIColor.blue
+
+        self.view.addSubview(cube)
+
+        return cube
+
+    }()
+
+    let gravity = UIGravityBehavior()
+    let collision = UICollisionBehavior()
+    let itemBehavior = UIDynamicItemBehavior()
+
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        view.backgroundColor = UIColor.white
+
+
+    }
+
+    override func viewDidAppear(_ animated: Bool) {
+        super.viewDidAppear(animated)
+
+
+
+
+        gravity.addItem(cube)
+        dynamicAnimator.addBehavior(gravity)
+
+        collision.addItem(cube)
+        collision.translatesReferenceBoundsIntoBoundary = true
+
+        dynamicAnimator.addBehavior(collision)
+
+        itemBehavior.addItem(cube)
+        itemBehavior.allowsRotation = true
+        itemBehavior.friction = 0.3
+        itemBehavior.angularResistance = 0.1
+        dynamicAnimator.addBehavior(itemBehavior)
+
+        let tapGesture = UITapGestureRecognizer(target: self, action: #selector(pushIt))
+        view.addGestureRecognizer(tapGesture)
+
+
+    }
+
+    func pushIt(){
+        let push = UIPushBehavior(items: gravity.items, mode: .instantaneous)
+        push.magnitude = 10.0
+        push.pushDirection = CGVector.init(dx: 5.0, dy: -10.0)
+
+        dynamicAnimator.addBehavior(push)
+    }
+
+
+}
+
+
+
+let viewController = physicViewController()
+
+
+PlaygroundPage.current.liveView = viewController
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