建立联系后试图隐藏节点

Question

我有一个 SKSprite 节点，我想让它在建立联系后消失。我试图设置 .hidden = true 但这没有用

var coin = SKSpriteNode()
//MARK: SKPhysicsContactDelegate methods

func didBeginContact(contact: SKPhysicsContact) {

    if (contact.bodyA.categoryBitMask == userCategory) && (contact.bodyB.categoryBitMask == objectCategory) {

        gameOver = 1
        movingObjects.speed = 0
        presentGameOverView()

    } else if (contact.bodyA.categoryBitMask == userCategory) && (contact.bodyB.categoryBitMask == coinCategory) {

        println("scoring")
        //code to hide node
        coin.hidden = true //not working

    }
}

}

Answer 1

SKPhysicsBody 有一个属性叫做 node。这可以在 didContactBegin 函数内部访问以隐藏 node.

func didBeginContact(contact: SKPhysicsContact) {

    if (contact.bodyA.categoryBitMask == userCategory) && (contact.bodyB.categoryBitMask == coinCategory) {

        println("scoring")
        //code to hide node
        contact.bodyB.node?.hidden = true // Changed

    }
}

建立联系后试图隐藏节点

Trying to hide a node after contact was made

iphone

sprite-kit

swift

ios8