Hopscotch tile

ViewController.swift

//
//  ViewController.swift
//  HopscotchTile
//
//  Created by Mizushima Yusuke on 8/29/15.
//  Copyright (c) 2015 Yusuke Mizusima. All rights reserved.
//

import UIKit
import SceneKit

class ViewController: UIViewController {
    
    weak var sceneView : SCNView?
    var count = 0
    
    override func viewDidLoad() {
        super.viewDidLoad()
        setupScene()
        createTile()
    }
    
    func setupScene() {
        let sv = SCNView(frame: view.bounds)
        sv.backgroundColor = UIColor.brownColor()
        sv.scene = SCNScene()
        sv.autoenablesDefaultLighting = true
        view.addSubview(sv)
        self.sceneView = sv
    }
    
    func createTile() {
        let s = 1 as CGFloat
        for i in 0...99 {
            let x = Float(i % 10) * 1.4 + Float(i/10) * 0.4
            let y = Float(i / 10) + Float(i%10) * 0.6
            let box = SCNBox(width: s, height: s, length: 0.1, chamferRadius: 0.05);
            box.firstMaterial?.diffuse.contents = UIColor.lightGrayColor()
            let boxnode = SCNNode(geometry: box)
            boxnode.name = "\(i)"
            boxnode.position = SCNVector3(x: x, y: y, z: 0)
            self.sceneView?.scene?.rootNode.addChildNode(boxnode)
        }
    }
    
    override func touchesBegan(touches: Set<NSObject>, withEvent event: UIEvent) {
        
        func typeA(n: SCNNode) -> Void {
            let numA = n.name!.toInt()! / 10
            let numB = n.name!.toInt()! % 10
            n.runAction(SCNAction.sequence([
                SCNAction.moveByX(-CGFloat(numA) * 0.4, y: 0, z: 0, duration: 1.0),
                SCNAction.moveByX(-CGFloat(numB) * 0.4, y: 0, z: 0, duration: 1.0),
                SCNAction.moveByX(0, y: -CGFloat(numB) * 0.6, z: 0, duration: 1.0),
                ]))
            
        }
        
        func typeB(n: SCNNode) -> Void {
            let i = n.name!.toInt()!
            let x = Float(i % 10) * 1.4 + Float(i/10) * 0.4
            let y = Float(i / 10) + Float(i%10) * 0.6
            n.runAction(SCNAction.moveTo(SCNVector3(x: x, y: y, z: 0), duration: 3.0))
        }
        
        self.sceneView?.scene?.rootNode.childNodes
            .filter { ($0 as! SCNNode).name != nil }
            .foreach { n -> Void in
                if self.count == 0 { typeA(n as! SCNNode) }
                else { typeB(n as! SCNNode) }
        }
        
        self.count = (self.count + 1) % 2;
    }
    
}

extension Array {
    func foreach(doit:(T)->Void) {for i in self {doit(i)} }
}