Swift SKSpriteNode: Detect Tap / DoubleTap / LongPress

Question

I'm attempting to create a subclass of SKSpriteNode which can detect user interaction (tap, double tap and hold), then defer to a delegate. This seems to me like a relatively common need, but:

1. The code is incapable of detecting a double-tap without also triggering a single-tap.
2. I haven't found a way to detect hold/long-press actions at all.

Am I going about this all wrong? I can't help feeling that SpriteKit should have something standard to handle something so basic. I know there's UIGestureRecognizer, but it doesn't seem very compatible with specific SKNodes rather than UIViews.

Here's what I have currently. Based on examples from Apple, I have all of the non-device-specific code in the main class file:

import SpriteKit

enum ActionType: Int {
    case Single
    case Double
    case Hold
}

protocol EnvironmentElementDelegate {
    func handleActionOnElement(element: EnvironmentElement, actionType: ActionType)
}

class EnvironmentElement: SKSpriteNode {

    let delegate: EnvironmentElementDelegate!

    init(imageNamed: String, elementNamed: String, delegate: EnvironmentElementDelegate) {
        self.delegate = delegate
        let texture = SKTexture(imageNamed: imageNamed)
        super.init(texture: texture, color: UIColor.clearColor(), size: texture.size())
        self.name = elementNamed
        userInteractionEnabled = true
    }

    required init(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
    }
}

...then all of the iOS-specific code in a separate extension file:

import SpriteKit

extension EnvironmentElement {

    override func touchesBegan(touches: NSSet, withEvent event: UIEvent) {
        for touch: AnyObject in touches {
            if (touch.tapCount >= 2) {
                NSObject.cancelPreviousPerformRequestsWithTarget(self)
            }
        }
    }

    override func touchesEnded(touches: NSSet, withEvent event: UIEvent) {
        for touch: AnyObject in touches {
            if (touch.tapCount == 1) {
                delegate.handleActionOnElement(self, actionType: ActionType.Single)
                // Unable to find Swift equivalent to this: [self performSelector:@selector(onFlip) withObject:nil afterDelay:0.3];
            } else {
                delegate.handleActionOnElement(self, actionType: ActionType.Double)
            }
        }
    }
}

Answer 1

You can simply use touch.tapCount inside touchesBegan: