/*

     Copyright (C) 2016 Apple Inc. All Rights Reserved.

     See LICENSE.txt for this sample’s licensing information

     Abstract:

     An SCNView used to relay keyboard controls on OSX, and present

                 setup the 2D overlay.

 */

import GameKit

class View: SCNView {

    // MARK: Mouse and Keyboard Events

    #if os(OSX)

    var eventsDelegate: KeyboardEventsDelegate?

    override func keyDown(with event: NSEvent) {

        guard let eventsDelegate = eventsDelegate, eventsDelegate.keyDown(in: self, with: event) else {

            super.keyDown(with: event)

            return

        }

    }

    override func keyUp(with event: NSEvent) {

        guard let eventsDelegate = eventsDelegate, eventsDelegate.keyUp(in: self, with: event) else {

            super.keyUp(with: event)

            return

        }

    }

    #endif

    // Resizing

    #if os(iOS) || os(tvOS)

    override func layoutSubviews() {

        super.layoutSubviews()

        update2DOverlays()

    }

    #elseif os(OSX)

    override func setFrameSize(_ newSize: NSSize) {

        super.setFrameSize(newSize)

        update2DOverlays()

    }

    #endif

    // MARK: Overlays

    private let _overlayNode = SKNode()

    private let _scaleNode = SKNode()

    private let _collectedItemsCountLabel = SKLabelNode(fontNamed: "Superclarendon")

    private func update2DOverlays() {

        _overlayNode.position = CGPoint(x: 0.0, y: bounds.size.height)

    }

    func setup2DOverlay() {

        let w = bounds.size.width

        let h = bounds.size.height

        // Setup the game overlays using SpriteKit.

        let skScene = SKScene(size: CGSize(width: w, height: h))

        skScene.scaleMode = .resizeFill

        skScene.addChild(_scaleNode)

        _scaleNode.addChild(_overlayNode)

        _overlayNode.position = CGPoint(x: 0.0, y: h)

        #if os(OSX)

        _scaleNode.xScale = layer!.contentsScale

        _scaleNode.yScale = layer!.contentsScale

        #endif

        // The Bob icon.

        let bobSprite = SKSpriteNode(imageNamed: "BobHUD.png")

        bobSprite.position = CGPoint(x: 70, y:-50)

        bobSprite.xScale = 0.5

        bobSprite.yScale = 0.5

        _overlayNode.addChild(bobSprite)

        _collectedItemsCountLabel.text = "x0"

        _collectedItemsCountLabel.horizontalAlignmentMode = .left

        _collectedItemsCountLabel.position = CGPoint(x: 135, y:-63)

        _overlayNode.addChild(_collectedItemsCountLabel)

        // Assign the SpriteKit overlay to the SceneKit view.

        self.overlaySKScene = skScene

        skScene.isUserInteractionEnabled = false

    }

    var collectedItemsCount = 0 {

        didSet {

            _collectedItemsCountLabel.text = "x\(collectedItemsCount)"

        }

    }

    func didCollectItem() {

        collectedItemsCount = collectedItemsCount + 1

    }

    func didCollectBigItem() {

        collectedItemsCount = collectedItemsCount + 10

    }

}