//
//  GameScene.swift
//  HappyBird
//
//  Created by user on 2019/7/16.
//  Copyright © 2019 IDK. All rights reserved.
//

import SpriteKit
import GameplayKit

class GameScene: SKScene {

    private var label : SKLabelNode?
    private var spinnyNode : SKShapeNode?

    var background = SKSpriteNode(imageNamed: "background")

    override func didMove(to view: SKView) {

        // Get label node from scene and store it for use later
        self.label = self.childNode(withName: "//helloLabel") as? SKLabelNode
        if let label = self.label {
            label.alpha = 0.0
            label.run(SKAction.fadeIn(withDuration: 2.0))
        }

        // Create shape node to use during mouse interaction
        let w = (self.size.width + self.size.height) * 0.05
        self.spinnyNode = SKShapeNode.init(rectOf: CGSize.init(width: w, height: w), cornerRadius: w * 0.3)

        if let spinnyNode = self.spinnyNode {
            spinnyNode.lineWidth = 2.5

            spinnyNode.run(SKAction.repeatForever(SKAction.rotate(byAngle: CGFloat(Double.pi), duration: 1)))
            spinnyNode.run(SKAction.sequence([SKAction.wait(forDuration: 0.5),
                                              SKAction.fadeOut(withDuration: 0.5),
                                              SKAction.removeFromParent()]))
        }

        addChild(background)
        background.anchorPoint = CGPoint(x: 0, y: 0)
        background.position = CGPoint(x: 100, y : 0)
    }


    func touchDown(atPoint pos : CGPoint) {
        if let n = self.spinnyNode?.copy() as! SKShapeNode? {
            n.position = pos
            n.strokeColor = SKColor.green
            self.addChild(n)
        }
    }

    func touchMoved(toPoint pos : CGPoint) {
        if let n = self.spinnyNode?.copy() as! SKShapeNode? {
            n.position = pos
            n.strokeColor = SKColor.blue
            self.addChild(n)
        }
    }

    func touchUp(atPoint pos : CGPoint) {
        if let n = self.spinnyNode?.copy() as! SKShapeNode? {
            n.position = pos
            n.strokeColor = SKColor.red
            self.addChild(n)
        }
    }

    override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
        if let label = self.label {
            label.run(SKAction.init(named: "Pulse")!, withKey: "fadeInOut")
        }

        for t in touches { self.touchDown(atPoint: t.location(in: self)) }
    }

    override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent?) {
        for t in touches { self.touchMoved(toPoint: t.location(in: self)) }
    }

    override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
        for t in touches { self.touchUp(atPoint: t.location(in: self)) }
    }

    override func touchesCancelled(_ touches: Set<UITouch>, with event: UIEvent?) {
        for t in touches { self.touchUp(atPoint: t.location(in: self)) }
    }


    override func update(_ currentTime: TimeInterval) {
        // Called before each frame is rendered
    }
}