CODEWITHSUNDEEP
swiftsprite-kitskspritenode
nowBrain
nowBrain

Reputation: 79

Why is my touchesEnded function not initializing?

The code will return the x1 and y1 values, but does not seem to be running through the touchesEnded function. My goal is to create a rectangle starting at a corner where the user touches and ending where the user lifts their finger.

            //touch initialized
            override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
            for touch in touches {
            let location = touch.location(in: self)
            let x1 = location.x
            let y1 = location.y
            print(x1,y1)

        }

            func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?){
            for touch in touches{

            let location2 = touch.location(in: self)
            let x2 = location2.x
            let y2 = location2.y
            let originX = min(x1,x2)
            let originY = min(y1,y2)
            let cornerX = max(x1,x2)
            let cornerY = max(y1,y2)
            let boxWidth = cornerX - originX
            let boxHeight = cornerY - originY

            let box = SKSpriteNode()
            box.size = CGSize(width: boxWidth, height: boxHeight)
            box.color = SKColor.black
            box.position = CGPoint(x:originX, y: originY)
            addChild(box)

            print(x1,y1,x2,y2)
            }
            }

Upvotes: 1

Views: 80

Answers (1)

Nik
Nik

Reputation: 1664

The problem in your code is that it's missing a curly bracket to close touchesBegan, so touchesEnded is not allowed to be overridden because it's technically in your touchesBegan rather than in the scene itself.

Try this:

var x1: CGFloat = 0.0
var y1: CGFloat = 0.0

//...

//touch initialized
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
    for touch in touches {
        let location = touch.location(in: self)
        x1 = location.x
        y1 = location.y
        print(x1,y1)
    }
}

override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?){

    for touch in touches{
        let location2 = touch.location(in: self)
        let x2 = location2.x
        let y2 = location2.y
        let originX = min(x1,x2)
        let originY = min(y1,y2)
        let cornerX = max(x1,x2)
        let cornerY = max(y1,y2)
        let boxWidth = cornerX - originX
        let boxHeight = cornerY - originY
        let box = SKSpriteNode()
        box.size = CGSize(width: boxWidth, height: boxHeight)
        box.color = SKColor.black
        box.position = CGPoint(x:originX, y: originY)
        addChild(box)

        print(x1,y1,x2,y2)
    }
}

Of course, instead of saving each x and y coordinates separately, I would jut store two CGPoints

Upvotes: 2

Related Questions