The SKNode class is the fundamental building block of most Sprite Kit content. All visual elements in a Sprite Kit-based game are drawn using predefined SKNode subclasses.
Questions tagged [sknode]
331 questions
3
votes
1 answer
Why does [NSSet containsObject] fail for SKNode members in iOS8?
Two objects are added to an NSSet, but when I check membership, I can't find one of them.
The test code below worked fine in iOS7 but fails in iOS8.
SKNode *changingNode = [SKNode node];
SKNode *unchangingNode = [SKNode node];
NSSet *nodes = [NSSet…
Karl Voskuil
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votes
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Trying to resize sknode produces error "Cannot assign to the result of this expression"?
I have created a subclass of SKNode called level and I'm trying to change it's size, however I get the error "Cannot assign to the result of this expression".
What am I doing wrong?
class Level: SKNode {
override init() {
super.init()
…
lisovaccaro
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3
votes
2 answers
SKPhysicsWorld Simulate Physics in Scaled Nodes
I'm attempting to build a SpriteKit game which involves levels with physics bodies which can be zoomed in and out on. The physics world is not behaving as I would expect and causing strange things to happen when the zoom level is changed.
The nodes…
Anthony Mattox
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votes
1 answer
Checking an SKNode is onscreen and visible
Is there a way to check when a SKSpriteNode / SKNode is onscreen (i.e. visible) I have a large scrolling background where I am spawning mobs, but I want to limit their animations and sounds if they are not visible. Is there a way to do this, I could…
fuzzygoat
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votes
1 answer
iOS7 Sprite Kit can I archive the entire scene and use it as a save game?
I'm looking at the userData property of SKNode and noticed this statement:
Sprite Kit does not do anything with the data stored in the node.
However, the data is archived when the node is archived.
This got me thinking - is it possible to…
Alex Stone
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votes
4 answers
Sprite Kit: How To Subclass SKNode to create a Vehicle class (complex object with joints)
Has anyone figured out (natively) how to subclass SKNode to include multiple bodies connect by joints - for instance, a car?
There doesn't seem to be a way to add the sub class's joints to the parent scene's physicsWorld property.
Also, when trying…
user1052888
2
votes
0 answers
Does SKNode have an actions property?
I wondered if there was an easy way to see a list of all actions currently assigned to a node in SpriteKit. Something like an "actions" property that will contain a list of all a node's actions. The documentation for SKNode does not show anything…
peacetype
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Custom SKNode object is not shown | Swift
I programmed an SKButton class. The problem is that the button doesn't show up in my scene even though I added it to this one. I also programmed a joystick, but it is displayed. What did I do wrong?
SKButton:
import SpriteKit
class SKButton: SKNode…
chicken
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votes
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onTouchesBegan() not being called for my custom SKNode
I'm trying to design my own DPad for my game but for some reason my onTouchesBegan() is not being called. I explored a bit and I think the reason for this is because my self.frame.size is equal to (0,0) for some reason even after I have added my…
Brejuro
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0 answers
SpriteKit: blurred background SKNode
How can I blur the background of a single transparent SKNode, while leaving the main background clear? I want something like this:
The background is a single root SKNode and there's another SKNode added as a child. The child node is transparent…
bcattle
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2
votes
1 answer
SKAction.rotate not running on SKCameraNode
So the actual SKCameraNode is working fine, since I make it follow another node and that works just fine. But when I try to rotate the camera with an SKAction, it won't rotate. When I try to set its zRotation though, it works fine. I don't really…
J. H.
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votes
1 answer
SpriteKit: How to detect touches on node that began outside of node
SKNode A is a parent of SKNode B.
If touches begin inside of SKNode B, the touchesMoved(_ touches: Set, with event: UIEvent?) function gets called.
If, however, the touches begin outside of SKNode B but move into SKNode B, the touchesMoved…
Crashalot
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Get parent of a node referenced by SKReferenceNode in Sprite Kit
I'm using Xcode's Scene Editor to build a GameScene.
In the GameScene.sks file, I have added an SKReferenceNode that I named componentReference. This reference node references Component which represents the file Component.sks. Component.sks…
thecanteen
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1 answer
Check if SKNode has a certain action running
I have a SKNode that is running different actions.
Depending on the running action I want to trigger other behaviours. For that I would need to find out how to check which action is currently running on my SKNode.
I know of .hasActions() but this…
boehmatron
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votes
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SKShapeNode inside another one, limited by parent bounds
All right, so let's say I have two SKShapeNodes (or any SKNode related object), one is a circle, and the other is a square. I'm just trying to put the square inside the circle so it looks like this:
However, if I simply add the Square Shape Node…
ThiagoAM
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