I have created a container node to put in all my SKSpriteNodes that need to be moved all in one touch, I can detect touches on them normally in iOS 8 but in iOS 7 I can only detect touches on my main node and when I touch an SKSpriteNode that it's in the container node nothing happens.. How can I fix this?
let lvlsNode = SKNode()
override func didMoveToView(view: SKView) {
self.addChild(lvlsNode)
axe = SKSpriteNode(imageNamed:"axe")
axe.anchorPoint = CGPointMake(1, 0)
axe.size = CGSizeMake(axe.size.width/1.4, axe.size.height/1.4)
axe.position = CGPointMake(0+screenWidth/7, shield.position.y-shield.size.width*1.4)
axe.zPosition = 12
axe.name = "axe"
lvlsNode.addChild(axe)
}
override func touchesBegan(touches: Set<NSObject>, withEvent event: UIEvent) {
/* Called when a touch begins */
for touch in (touches as! Set<UITouch>) {
let location = touch.locationInNode(self)
let node = nodeAtPoint(location)
if node.name == "axe" {
// do something.... this work in iOS8 but not in iOS 7.1
}
Yournode.name = "nodeX"
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
let touch = touches.first as UITouch!
if atPoint((touch?.location(in: self))!).name == Yournode.name {
//Your code
}
}
Related
I'm trying to trigger a touch event on a SKSpriteNode where it's child node is tapped on. When the child node it touched, the event isn't triggered. I have found a hack work around using .parent but doesn't feel like the most efficient or elegant way of doing is.
Please see code below:
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
let touch = touches.first! as UITouch
let location = touch.locationInNode(self)
let node = self.nodeAtPoint(location)
if node is PlanListItem || node.parent is PlanListItem {
for plan in planListItems as [PlanListItem] {
plan.selected = false
}
// Some more code...
}
}
Help much appreciated.
You can do this inside the node subclass:
class PlanListItem:SKSpriteNode {
var isSelected: Bool = false
override init(texture size etc) {
//your init
self.userInteractionEnabled = true
}
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
print("PlanListItem touched")
isSelected = !isSelected
}
}
I'm working with Swift and SpriteKit.
I have the following situation :
Here, each of the "triangles" is a SKShapenode.
My problem is that I would like to detect when someone touches the screen which triangle is being touched.
I assume that the hitbox of all these triangles are rectangles so my function returns me all the hitboxes touched while I only want to know which one is actually touched.
Is there any way to have a hitbox that perfectly match the shape instead of a rectangle ?
Here's my current code :
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?)
{
let touch = touches.first
let touchPosition = touch!.locationInNode(self)
let touchedNodes = self.nodesAtPoint(touchPosition)
print(touchedNodes) //this should return only one "triangle" named node
for touchedNode in touchedNodes
{
if let name = touchedNode.name
{
if name == "triangle"
{
let triangle = touchedNode as! SKShapeNode
// stuff here
}
}
}
}
You could try to use CGPathContainsPoint with a SKShapeNode instead of nodesAtPoint, which is more appropriate:
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?)
{
let touch = touches.first
let touchPosition = touch!.locationInNode(self)
self.enumerateChildNodesWithName("triangle") { node, _ in
// do something with node
if node is SKShapeNode {
if let p = (node as! SKShapeNode).path {
if CGPathContainsPoint(p, nil, touchPosition, false) {
print("you have touched triangle: \(node.name)")
let triangle = node as! SKShapeNode
// stuff here
}
}
}
}
}
This would be the easiest way of doing it.
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?)
{
for touch in touches {
let location = touch.locationInNode(self)
if theSpriteNode.containsPoint(location) {
//Do Whatever
}
}
}
The way I do this with Swift 4:
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
guard let touch = touches.first else {
return
}
let touchPosition = touch.location(in: self)
let touchedNodes = nodes(at: touchPosition)
for node in touchedNodes {
if let mynode = node as? SKShapeNode, node.name == "triangle" {
//stuff here
mynode.fillColor = .orange //...
}
}
}
In the scene of a finger you can move the object. But if you just speed up the movement of the finger on the screen - the object remains in place. Is it possible to accelerate the speed of its movement? Duration is already set to 0
override func touchesMoved(touches: Set<UITouch>, withEvent event: UIEvent?) {
let touch = touches.first
let touchLocation = touch!.locationInNode(self)
let node = self.nodeAtPoint(touchLocation)
if (node.name == "circle") {
let moveAction = SKAction.moveTo(touchLocation, duration: 0)
figureUser.runAction(moveAction)
}
}
Your problem is not the speed, your problem is you are moving so fast on the screen, that your touch is not recognizing a node underneath it anymore because the node is physically not underneath it. How you handle this problem is on the touch begin event, you check for a node, and assign this node to a variable. Then on the touch move event, update the new variable. Finally on touch end, clear the variable. Note, you would need to handle this code for things like multi touch
var movingNode : SKNode?
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
let touch = touches.first
let touchLocation = touch!.locationInNode(self)
let node = self.nodeAtPoint(touchLocation)
if (node.name == "circle") {
movingNode = node
let moveAction = SKAction.moveTo(touchLocation, duration: 0)
figureUser.runAction(moveAction)
}
}
override func touchesMoved(touches: Set<UITouch>, withEvent event: UIEvent?) {
let touch = touches.first
let touchLocation = touch!.locationInNode(self)
let moveAction = SKAction.moveTo(touchLocation, duration: 0)
//at this point I am lost, how does node even relate here,
//is figureUser suppose to be node?
figureUser.runAction(moveAction)
}
I had a problem with movning some nodes around but I found a way (finally) but then I faced a problem which is : when two nodes gets across the touch will move from one node to the other ! but what I want is when I touch a node I will move it until I move my finger from the screen
here is my code :
override func touchesMoved(touches: Set<NSObject>, withEvent event: UIEvent) {
for touch: AnyObject in touches {
var location = touch.locationInNode(self)
let node = nodeAtPoint(location)
if node == firstCard{
firstCard.position = location
}else if node == secondCard{
secondCard.position = location
println("Second Card Location")
println(secondCard.position)
}else{
println("Test")
}
}
}
You need to keep track of the SKNode the finger touched in touchesBegan
First thing to remember is the the same UITouch object is returned for each finger in touchesMoved with different locations. So we can keep track of the each touch in the node using a touchTracker dictionary.
var touchTracker : [UITouch : SKNode] = [:]
Also give a name to each card, so that we can keep track of the nodes that need to be moved. For example.
card1.name = "card"
card2.name = "card"
In touchesBegan, we will add the node that is under the touch to the touchTracker.
override func touchesBegan(touches: NSSet, withEvent event: UIEvent) {
for touch in touches {
let location = touch.locationInNode(self)
let node = self.nodeAtPoint(location)
if (node.name == "card") {
touchTracker[touch as UITouch] = node
}
}
}
When a touch is moved inside touchesMoved, we will get the node back from the touchTracker and update its position.
override func touchesMoved(touches: NSSet, withEvent event: UIEvent) {
for touch in touches {
let location = touch.locationInNode(self)
let node = touchTracker[touch as UITouch]
node?.position = location
}
}
In touchesEnded, we update the final position again, and remove the touch key-value pair from touchTracker.
override func touchesEnded(touches: NSSet, withEvent event: UIEvent) {
for touch in touches {
let location = touch.locationInNode(self)
let node = touchTracker[touch as UITouch]
node?.position = location
touchTracker.removeValueForKey(touch as UITouch)
}
}
So I am super new to swift and iOS development but not totally new to programming, and was just going through some tutorials, but basically my code looks like this:
import SpriteKit
class GameScene: SKScene {
override func didMoveToView(view: SKView) {
let circle = SKShapeNode(circleOfRadius: 30.0)
circle.position = CGPointMake(100, 200)
addChild(circle)
}
override func touchesMoved(touches: NSSet, withEvent event: UIEvent) {
for touch in touches {
let location = touch.locationInNode(self)
let touchedNode = nodeAtPoint(location)
touchedNode.position = location;
}
}
}
When I build this it recognizes and moves the circle when I drag it, but only for about 30 pixels and then I have to touch it again to move it. What am I doing wrong here?
I might be wrong but I believe your finger is leaving the node limits and enters the background. I would set it up as such:
// First make the shape available throughout the code and make sure you have a place to save the touch event for later use.
var circle: SKShapeNode!
var circleTouch: UITouch?
// Create the Shape
override func didMoveToView(view: SKView) {
circle = SKShapeNode(circleOfRadius: 30.0)
circle.position = CGPointMake(100, 200)
addChild(circle)
}
// When a finger is placed on the screen, check if it's in the circle, if it is, keep that touch even in memory so we can reference it later because other fingers could touch other things in the scene.
override func touchesBegan(touches: NSSet, withEvent event: UIEvent) {
for touch in touches {
if nodeAtPoint(touch.locationInNode(self)) == circle {
circleTouch = touch as? UITouch
}
}
}
// Check if the touch event that is moving is the one that anchored the circle to our finger, if yes, move the circle to the position of the finger.
override func touchesMoved(touches: NSSet, withEvent event: UIEvent) {
for touch in touches {
if circleTouch != nil {
if touch as UITouch == circleTouch! {
let location = touch.locationInNode(self)
circle.position = location
}
}
}
}
// Clean up the touch event when the finger anchoring the circle is raised from the screen.
override func touchesEnded(touches: NSSet, withEvent event: UIEvent) {
for touch in touches {
if circleTouch != nil {
if touch as UITouch == circleTouch! {
circleTouch = nil
}
}
}
}
You can also use if let statements in there but I checked for nil instead for clarity.
Tokuriku, thanks so much, you we're not quite right but it got me to the eventual answer, here it is
import SpriteKit
class GameScene: SKScene {
var circleTouch: UITouch?
override func didMoveToView(view: SKView) {
/* Setup your scene here */
let circle = SKShapeNode(circleOfRadius: 40.0)
circle.fillColor = UIColor.blackColor()
circle.position = CGPoint(x: size.width * 0.5, y: size.height * 0.2)
circle.name = "userCircle"
addChild(circle)
}
override func touchesBegan(touches: NSSet, withEvent event: UIEvent) {
for touch in touches {
if nodeAtPoint(touch.locationInNode(self)).name == "userCircle" {
circleTouch = touch as? UITouch
}
}
}
override func touchesMoved(touches: NSSet, withEvent event: UIEvent) {
for touch in touches {
if circleTouch != nil {
if touch as UITouch == circleTouch! {
let location = touch.locationInNode(self)
let touchedNode = nodeAtPoint(location)
touchedNode.position = location
}
}
}
}
override func touchesEnded(touches: NSSet, withEvent event: UIEvent) {
for touch in touches {
if circleTouch != nil {
if touch as UITouch == circleTouch! {
circleTouch = nil
}
}
}
}