CODEWITHSUNDEEP
iphoneswiftios8sprite-kit
Jeremy Sh
Jeremy Sh

Reputation: 607

End sprite kit collision immediately after first contact

Hi I am trying to refine my logic for collision between two nodes in my game. I want to update the score and hide the node when the player comes in contact with the coins. It works properly but the score is updated many times throughout contact with the hidden node. I want to know if there is a way to just run it once so that the score is update once. here is my code

    //MARK: SKPhysicsContactDelegate methods

func didBeginContact(contact: SKPhysicsContact) {

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

        gameOver = 1
        movingObjects.speed = 0
        presentGameOverView()
    }

    if (contact.bodyA.categoryBitMask == userCategory) && (contact.bodyB.categoryBitMask == coinCategory) {
        coinSound()
        contact.bodyB.node?.hidden = true
        score = score + 1
        println(score)
    }
}

Upvotes: 0

Views: 116

Answers (1)

rakeshbs
rakeshbs

Reputation: 24572

You can check if the node is hidden before increasing score.

func didBeginContact(contact: SKPhysicsContact) {

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

        gameOver = 1
        movingObjects.speed = 0
        presentGameOverView()
    }

    if (contact.bodyA.categoryBitMask == userCategory) && (contact.bodyB.categoryBitMask == coinCategory) {
        if !contact.bodyB.node?.hidden // Added line
        {
           coinSound()
           contact.bodyB.node?.hidden = true
           score = score + 1
           println(score)
        }
    }
}

To remove it from parent

func didBeginContact(contact: SKPhysicsContact) {

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

        gameOver = 1
        movingObjects.speed = 0
        presentGameOverView()
    }

    if (contact.bodyA.categoryBitMask == userCategory) && (contact.bodyB.categoryBitMask == coinCategory) {
         if contact.bodyB.node?.parent != nil {
             coinSound()
             contact.bodyB.node?.removeFromParent()
             score = score + 1
             println(score)
         }
    }
}

Upvotes: 1

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