SKSpriteNode chain - swift

I would like to make "aware" SKSpriteNode aware that touch is outside the node.(for example changing color)
I would like to use tuochesMoved (out of node) if it is possible
I don't want to connect them in any other way.
Those spries should be independend.
How to do that?
Thank you


Obviously you can implement the touchesBegan method to handle touches events :
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
if let touch = touches.first {
// ...
}
super.touchesBegan(touches, with: event)
}
And the other events to handle touches with the current Swift 3 syntax are:
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
}
override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent?) {
}
override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
}
override func touchesCancelled(_ touches: Set<UITouch>?, with event: UIEvent?) {
// Don't forget to add "?" after Set<UITouch>
}
About this, if you don't want to subclass your SKSpriteNode to add useful properties, you can use the userData property to store information about other nodes or himself and also about the current context:
yourSprite.userData = NSMutableDictionary()
yourSprite.userData?.setValue(SKColor.blue, forKeyPath: "currentColor")
yourSprite.userData?.setValue(true, forKeyPath: "selected")

Related

The keyboard does not close when I tap on the screen

I am implementing keyboard close as follows but it doesn't work.
extension SleepDiaryViewController: UITextFieldDelegate {
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
super.touchesBegan(touches, with: event)
view.endEditing(true)
}
}
Any ideas why this isn't working?

How to use a tochesBegan() method as an extension of a class?

How can I add a touchesBegan() method to my class?
Here is my method:
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
for touch in touches{
let locationUser = touch.location(in: self)
}}

You can use class extension adding the method in it if your
class is a subclass of UIView or UIWindow:
extension YourClass {
override open func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
super.touchesBegan(touches, with: event)
for touch in touches{
let locationUser = touch.location(in: self)
}
print("touchesBegan")
}
}

Method does not override any method from its superclass for Set<NSObject>

I was looking at a project that I made in Swift 1 a few years ago. And I noticed an error after converting my code to Swift 3 syntax that said Method does not override any method from its superclass. I know its because the Set is old syntax but what do I replace it with? This is the line:
override func touchesBegan(_ touches: Set<NSObject>, with event: UIEvent) {
self.view.endEditing(true)
}

This method in Swift 3 has change to:
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
super.touchesBegan(touches, with: event)
}
Reference from Apple

Swift 3
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
super.touchesBegan(touches, with: event)
self.view.endEditing(true)
}

How to check each frame if player is touching screen?

How can I check if player is touching the screen every frame? I want something similar to when you keep touch the screen in the game Geometry Dash you keep on jumping if you touch the ground. I tried this but i didn't work:
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
isTouching = true
}
and the same with touchDown function:
func touchDown(atPoint pos : CGPoint) {
isTouching = true
}

Try the following code:
var isTouching = false
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
isTouching = true
}
override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
isTouching = false
}

override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
isTouching = true
}
override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
isTouching = false
}
you can then check in your update loop
if isTouching == true {
do something
}
else {
do something else
}

It says method does not overide any method from its super class, what do i do? [duplicate]

Xcode 6.3. Within a class implementing UITextFieldDelegate protocol, I would like to override touchesBegan() method to possibly hide the keyboard. If I avoid a compiler error in the function spec, then there is a complier error trying to read the "touch" from the Set or NSSet, or else the super.touchesBegan(touches , withEvent:event) throws an error. One of these combinations compiled in Xcode 6.2! (So where is documentation to Swift "Set" and how to get an element from one?)
override func touchesBegan(touches: NSSet, withEvent event: UIEvent) {
// Hiding the Keyboard when the User Taps the Background
if let touch = touches.anyObject() as? UITouch {
if nameTF.isFirstResponder() && touch.view != nameTF {
nameTF.resignFirstResponder();
}
}
super.touchesBegan(touches , withEvent:event)
}
Try:
override func touchesBegan(touches: NSSet, withEvent event: UIEvent) or
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent)
Compiler error:
Overriding method with selector 'touchesBegan:withEvent:' has incompatible type '(NSSet, UIEvent) -> ()'
and
super.touchesBegan(touches , withEvent:event)
also complains
'NSSet' is not implicitly convertible to 'Set'; did you mean to use 'as' to explicitly convert?
Try:
override func touchesBegan(touches: Set<AnyObject>, withEvent event: UIEvent)
Compiler error:
Type 'AnyObject' does not conform to protocol 'Hashable'
Try:
override func touchesBegan(touches: Set<NSObject>, withEvent event: UIEvent)
Compiler error at
if let touch = touches.anyObject() as? UITouch
'Set' does not have a member named 'anyObject' BUT the function spec and call to super() are OK!
Try:
override func touchesBegan(touches: NSSet<AnyObject>, withEvent event: UIEvent) -> () or
override func touchesBegan(touches: NSSet<NSObject>, withEvent event: UIEvent)
Compiler error:
Cannot specialize non-generic type 'NSSet'

Swift 1.2 (Xcode 6.3) introduced a native Set type that bridges
with NSSet. This is mentioned in the Swift blog and in the
Xcode 6.3 release notes, but apparently not yet added to the official documentation (update: As Ahmad Ghadiri noted, it is documented now).
The UIResponder method is now declared as
func touchesBegan(touches: Set<NSObject>, withEvent event: UIEvent)
and you can override it like this:
override func touchesBegan(touches: Set<NSObject>, withEvent event: UIEvent) {
if let touch = touches.first as? UITouch {
// ...
}
super.touchesBegan(touches , withEvent:event)
}
Update for Swift 2 (Xcode 7): (Compare Override func error in Swift 2)
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
if let touch = touches.first {
// ...
}
super.touchesBegan(touches, withEvent:event)
}
Update for Swift 3:
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
if let touch = touches.first {
// ...
}
super.touchesBegan(touches, with: event)
}

With xCode 7 and swift 2.0, use following code:
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
if let touch = touches.first{
print("\(touch)")
}
super.touchesBegan(touches, withEvent: event)
}
override func touchesEnded(touches: Set<UITouch>, withEvent event: UIEvent?) {
if let touch = touches.first{
print("\(touch)")
}
super.touchesEnded(touches, withEvent: event)
}
override func touchesMoved(touches: Set<UITouch>, withEvent event: UIEvent?) {
if let touch = touches.first{
print("\(touch)")
}
super.touchesMoved(touches, withEvent: event)
}

Using Swift 3 and Xcode 8
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
}
override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent?) {
}
override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
}
override func touchesCancelled(_ touches: Set<UITouch>?, with event: UIEvent?) {
// Don't forget to add "?" after Set<UITouch>
}

It is now in the Apple API reference here and for overriding in xCode version 6.3 and swift 1.2 you can use this code:
override func touchesBegan(touches: Set<NSObject>, withEvent event: UIEvent) {
if let touch = touches.first as? UITouch {
// ...
}
// ...
}

The current one right now for the newest update as of xCode 7.2 Swift 2.1 on Dec 19, 2015.
Next time you get an error like this again, remove the function and start typing it again "touchesBe..." and xCode should automatically complete it to the newest one for you instead of trying to fix the old one.
override func touchesMoved(touches: Set<UITouch>, withEvent event: UIEvent?) {
for touch: AnyObject! in touches {
let touchLocation = touch.locationInNode(self)
//Use touchLocation for example: button.containsPoint(touchLocation) meaning the user has pressed the button.
}
}

What worked for me was:
override func touchesBegan(touches: Set<NSObject>, withEvent event: UIEvent) {
if let touch = touches.first as? UITouch {
// ...
}
super.touchesBegan(touches , withEvent:event!)
}

Small addition. For swift to compile w/o error, you need to add
import UIKit.UIGestureRecognizerSubclass

Using Swift 4 and Xcode 9
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
}

override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
if let touch = touches.first as? UITouch {
if touch.view == self.view{
self.dismiss(animated: true, completion: nil)
}
}
}