ios - 我可以在 Swift 中使用带括号的选择器吗？

Question

我想知道如何在 Swift 3 中使用 Selector，包括 func 所需的括号中的值。

let fireRecogniser = UISwipeGestureRecognizer(target: self, action: Selector(("shootShot")))

^ 那是我拥有的识别器，但是方法“shootShot”有一个用于 Element 的参数，它是我拥有的一个 enum。

这里是 'shootShot' 函数:

func shootShot(type: Element) {

    let shot = SKSpriteNode(imageNamed: "\(type)Shot")
    shot.texture?.filteringMode = SKTextureFilteringMode.nearest

    shot.position = CGPoint(x: -self.frame.width / 2 /*playerframe*/, y: -(self.frame.height / 2) + grnd.frame.height)
    shot.setScale(1)

    shot.physicsBody = SKPhysicsBody(circleOfRadius: (shot.frame.height / 2))
    shot.physicsBody?.affectedByGravity = false
    shot.physicsBody?.allowsRotation = true
    shot.physicsBody?.isDynamic = true
    shot.physicsBody?.restitution = 0
    shot.physicsBody?.angularDamping = 0
    shot.physicsBody?.linearDamping = 0
    shot.physicsBody?.friction = 0
    shot.physicsBody?.categoryBitMask = Contact.Shot.rawValue
    shot.physicsBody?.contactTestBitMask = Contact.Enemy.rawValue

    self.addChild(shot)

    // THIS WILL DEPEND ON DIFFICULTY
    let spin = SKAction.rotate(byAngle: 1, duration: 0.3)
    shot.run(SKAction.repeatForever(spin))
    let move = SKAction.moveTo(x: self.frame.width / 2, duration: 3.0)
    let remove = SKAction.removeFromParent()
    shot.run(SKAction.sequence([move, remove]))
}

如您所见，该方法有一个函数需要的 Element。

关于如何在我的 Selector 中包含该参数的任何帮助？谢谢。 :)

Answer 1

在 Swift 3 中像这样输入您的选择器

let fireRecogniser = UISwipeGestureRecognizer(target: self, action: #selector(shootShot(element:)))