I have a text field to type the word that, when (auto) and press the button (checkbutton) it should print out (correct). The problem is that it's not working.
When I'm in office touchesBegan: if (TextField.text == "auto") lists me an error:
Use Unresolved identifier "TextField".
When this condition removed as everything works fine and writes to me (correct).
I tried complet function touchesBegan moved to override func didMoveToView (view: SKView) and TextField.text is resolved but it is not working.
I work in SpriteKit
Where I make mistakes ?.
Thank you
Here is my code:
class level1: SKScene{
let logo = SKSpriteNode(imageNamed: "Q1")
let check = SKSpriteNode(imageNamed: "check")
let number = SKSpriteNode(imageNamed: "N1")
override func didMoveToView(view: SKView) {
scene!.scaleMode = .AspectFill
scene!.scaleMode = SKSceneScaleMode.ResizeFill
var background = SKSpriteNode(imageNamed: "Background")
background.size = CGSizeMake(self.size.width, self.size.height)
background.position = CGPointMake(self.size.width/2, self.size.height/2)
self.addChild(background)
let screenSize: CGRect = UIScreen.mainScreen().bounds
let screenWidth = screenSize.width;
let screenHeight = screenSize.height;
var TextField = UITextField(frame : CGRect(x:10, y:(screenHeight/2.25), width:(screenWidth - 20), height:(screenHeight/15) ))
self.view!.addSubview(TextField)
TextField.backgroundColor = UIColor.whiteColor()
TextField.textAlignment = .Center
TextField.font = UIFont(name: "Helvetica Neue", size: 23)
number.position = CGPoint(x: size.width * 0.5, y: size.height * 0.95)
addChild(number)
logo.position = CGPoint(x: size.width * 0.5, y: size.height * 0.72)
addChild(logo)
check.position = CGPointMake(size.width/2,size.height/2 - 43)
check.name = "checkbutton"
addChild(check)
}
override func touchesBegan(touches: Set<NSObject>, withEvent event: UIEvent) {
let touch = touches.first as! UITouch
let touchLocation = touch.locationInNode(self)
let touchedNode = self.nodeAtPoint(touchLocation)
if(touchedNode.name == "checkbutton"){
if(TextField.text == "auto"){
println("CORRECT")
}
} else {
}
}
}
Your var TextField is local to the method didMoveToView so cannot be accessed from inside touchesBegan. Move this var outside of didMoveToView into the class level.
Also, by convention vars should start with a lower case letter: textField rather than TextField.
Related
So here is my code:
import SpriteKit
import GameplayKit
class GameScene: SKScene {
var ship1 = [2,1]
var ship2 = [1,2]
let jonahSpriteNode = SKSpriteNode(imageNamed: "jonah_spaceship")
let georgeSpriteNode = SKSpriteNode(imageNamed: "george_spaceship")
override func didMove(to view: SKView) {
//var jonahFrames = [SKTexture]()
jonahSpriteNode.position = CGPoint(x: 30, y: frame.midY)
jonahSpriteNode.size = CGSize(width: 100.0, height: 100.0)
addChild(jonahSpriteNode)
georgeSpriteNode.position = CGPoint(x: 628, y: frame.midY)
georgeSpriteNode.size = CGSize(width: 100.0, height: 100.0)
addChild(georgeSpriteNode)
}
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
for touch in touches{
var touchLocation = touch.location(in: self)
var angle1 = atan2(jonahSpriteNode.position.y - touchLocation.y , jonahSpriteNode.position.x - touchLocation.x)
var angle = angle1 - CGFloat(Double.pi / 1)
makeCircularRange(to: jonahSpriteNode)
let rotate = SKAction.rotate(toAngle: angle, duration: 1.0)
let move = SKAction.move(to: CGPoint(x: touchLocation.x, y: touchLocation.y), duration: 2.5)
let sequence = SKAction.sequence([rotate, move])
jonahSpriteNode.run(sequence)
}
}
func makeCircularRange(to node: SKNode) {
let range = SKRange(lowerLimit: 0, upperLimit: 400)
let constraint = SKConstraint.distance(range, to: .zero)
node.constraints = [constraint]
}
}
I wanted to display the SKRange by showing upperLimit in a certain color. I tried making nodes around the limit and then coloring the nodes but it just showed a bunch of errors. If you have any ideas please answer.
Something like this:
The sprite node will be in the center and the circle will show where it can move.
You can make a circular shape using range.upperLimit as a radius an add to scene.
func drawCircularRangeBy(range: SKRange) {
let radius = range.upperLimit
let node = SKShapeNode(circleOfRadius: radius)
node.strokeColor = .white
addChild(node)
}
Take a look of this example: https://github.com/Maetschl/SpriteKitExamples/blob/master/CircularRange/CircularRange/GameScene.swift
If you really need dots instead of a line please see this answer: Drawing dashed line in Sprite Kit using SKShapeNode
I'm using XCode 10.2 with SpriteKit and swift 5 to create a Mac Application, and I cannot for the life of me find a working example of handling click events on a node.
The most updated info I can find suggests using the following:
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) { }
But XCode errors, saying
Use of undeclared type 'UIEvent'
Use of undeclared type 'UITouch'
I'm not sure how to proceed cause all the info I find suggests using the above code. Everything else is working OK so far though. Here is my GameScene Class:
import SpriteKit
class GameScene: SKScene {
var circle: SKShapeNode = SKShapeNode();
var label: SKLabelNode = SKLabelNode();
var ground: SKShapeNode = SKShapeNode();
/**
* Did Move Callback
*/
override func didMove(to view: SKView) {
initGround(view: view);
initLabel(view: view);
let recognizer = NSClickGestureRecognizer(target: self, action: #selector(tap));
view.addGestureRecognizer(recognizer);
}
/**
* Click Handler
*/
#objc func tap(recognizer: NSGestureRecognizer) {
let viewLocation = recognizer.location(in: view);
let sceneLocation = convertPoint(fromView: viewLocation);
addCircle(view: view!, position: sceneLocation);
}
// Not Working
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
}
/**
* Init Ground
*/
func initGround(view: SKView) {
let path = CGMutablePath();
path.move(to: CGPoint(x: 0, y: 30));
path.addLine(to: CGPoint(x: view.frame.width, y: 30));
path.addLine(to: CGPoint(x: view.frame.width, y: view.frame.height));
path.addLine(to: CGPoint(x: 0, y: view.frame.height));
path.addLine(to: CGPoint(x: 0, y: 30));
ground.path = path;
ground.lineWidth = 5;
ground.strokeColor = SKColor.brown;
let borderBody = SKPhysicsBody(edgeLoopFrom: path);
borderBody.friction = 5;
self.physicsBody = borderBody;
addChild(ground);
}
/**
* Add Label
*/
func initLabel(view: SKView) {
label = SKLabelNode(text: "No Gravity");
label.name = "no gravity button";
label.position = CGPoint(x: label.frame.width / 2, y: 5);
label.fontSize = 12;
label.fontColor = SKColor.yellow;
label.fontName = "Avenir";
label.isUserInteractionEnabled = true;
addChild(label);
}
/**
* Add Circle
*/
func addCircle(view: SKView, position: CGPoint) {
let size = Int.random(in: 1 ..< 50);
let color = getRandomColor();
circle = SKShapeNode(circleOfRadius: CGFloat(size));
// Set Position
circle.position = position;
// Set Physics
circle.physicsBody = SKPhysicsBody(circleOfRadius: CGFloat(size));
circle.physicsBody?.affectedByGravity = false;
circle.physicsBody?.usesPreciseCollisionDetection = true;
circle.physicsBody?.restitution = 1; //0.8
circle.physicsBody?.linearDamping = 0;
circle.physicsBody?.friction = 0; //0.2
circle.physicsBody?.isDynamic = true;
circle.physicsBody?.mass = CGFloat(size);
circle.physicsBody?.allowsRotation = true;
circle.physicsBody?.velocity = CGVector(dx: 0, dy: -1000);
circle.strokeColor = color;
circle.glowWidth = 1.0;
circle.fillColor = color;
addChild(circle)
}
func getRandomColor() -> SKColor {
return SKColor(red: .random(in: 0...1),
green: .random(in: 0...1),
blue: .random(in: 0...1),
alpha: 1.0)
}
}
Does anyone have experience with using Swift 5 and handling clicks / touches in SpriteKit? Or maybe just why XCode says that UIEvent and UITouch aren't real things?
Thanks!
On Mac, you’ll implement
-(void)mouseDown:(NSEvent *)theEvent {
}
- (void)mouseUp:(NSEvent *)theEvent {
}
- (void)mouseExited:(NSEvent *)theEvent {
}
In each case you will call
CGPoint loc = [theEvent locationInNode:self];
to learn where the click happened within the scene.
User Martin R pointed out the UIEvent and UITouch classes are included only in iOS projects. I'm creating a Mac Application, what I didn't realize was that I already had the click handler in my GameScene class:
override func didMove(to view: SKView) {
let recognizer = NSClickGestureRecognizer(target: self, action: #selector(click));
view.addGestureRecognizer(recognizer);
}
This registers a callback to a click handler, which I already had defined:
/**
* Click Handler
*/
#objc func tap(recognizer: NSGestureRecognizer) {
let viewLocation = recognizer.location(in: view);
let sceneLocation = convertPoint(fromView: viewLocation);
let touchedNode = self.atPoint(sceneLocation);
if let name = touchedNode.name {
if name == "no gravity button" {
print("Touched")
}
}
addCircle(view: view!, position: sceneLocation);
}
I was able to get the clicked node name and act upon it as I originally intended.
I'm trying to update the coinLabel, so that when the "life" node is tapped, it will update the SKLabelNode and display the correct coins after they have been subtracted from the total. I'm new to coding, so if there is anything else wrong with this please reply! Thanks!
import Foundation
import SpriteKit
class ShopScene: SKScene {
override func didMove(to view: SKView) {
let background = SKSpriteNode(imageNamed: "background")
background.size = self.size
background.position = CGPoint(x: self.size.width/2, y: self.size.height/2)
background.zPosition = 0
self.addChild(background)
let mainMenu = SKLabelNode(fontNamed: "The Bold Font")
mainMenu.text = "Main Menu"
mainMenu.fontSize = 100
mainMenu.fontColor = SKColor.darkGray
mainMenu.position = CGPoint(x: self.size.width*0.5, y: self.size.height*0.3)
mainMenu.zPosition = 1
mainMenu.name = "Main Menu"
self.addChild(mainMenu)
let Life = SKLabelNode(fontNamed: "The Bold Font")
Life.text = "Click here to buy 1 life!"
Life.fontSize = 130
Life.fontColor = SKColor.darkGray
Life.position = CGPoint(x: self.size.width*0.5, y: self.size.height*0.6)
Life.zPosition = 1
Life.name = "Life"
self.addChild(Life)
let coinLabel = SKLabelNode(fontNamed: "The Bold Font")
coinLabel.text = "Coins: \(coinNumber)"
coinLabel.fontSize = 100
coinLabel.fontColor = SKColor.black
coinLabel.zPosition = 1
coinLabel.position = CGPoint(x: self.size.width/2, y: self.size.height*0.1)
self.addChild(coinLabel)
}
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
for touch: AnyObject in touches {
let pointOfTouch = touch.location(in: self)
let nodeITapped = atPoint(pointOfTouch)
if nodeITapped.name == "Main Menu" {
let sceneToMoveTo = MainMenuScene(size: self.size)
sceneToMoveTo.scaleMode = self.scaleMode
let myTrasition = SKTransition.fade(withDuration: 0.5)
self.view!.presentScene(sceneToMoveTo, transition: myTrasition)
}
if nodeITapped.name == "Life" {
if coinNumber > 10 {
lifeNumber += 1
coinNumber -= 10
defaults.set(coinNumber, forKey: "coinNumberSaved")
defaults.set(lifeNumber, forKey: "lifeNumberSaved")
return
}
}
}
}
}
Just update your text in your tap recognizer again to change it
coinLabel.text = "Coins: \(coinNumber)"
You will need to make sure you have a reference of your coinLabel outside of your init so you can manipulate it outside of it.
At the top of your ShopScene you can do...
class ShopScene: SKScene {
var coinLabel = SKLabelNode()
//your code
}
and then when you go to init in your didMove(to view:) func, do instead...
coinLabel = SKLabelNode(fontNamed: "The Bold Font")
That way you can have a reference of it throughout your code. Although in the future you will want to think about making a subclass of SKNode to handle all your UI elements so you don't init everything in your GameScene.
Im messing around with an xcode project and I am trying to make a red ball SKShapeNode move around when I touch it. My own source code in the touch began class is not doing the trick. What is the flaw with my code and what do I need to do in order to fix it.
import SpriteKit
class GameScene: SKScene {
//Rectangle Skeletions
var leftWallRect = CGRect(x: 0, y: 0, width: 40, height: 1000)
var ball = SKShapeNode(circleOfRadius: 25);
override func didMoveToView(view: SKView) {
// Declare the Sprites in your scene
var ball = SKShapeNode(circleOfRadius: 25);
let leftWall = SKShapeNode(rect: leftWallRect);
let rightWall = SKShapeNode(rect: leftWallRect);
let pin = SKSpriteNode(imageNamed: "pin");
// Ball Properties
ball.strokeColor = UIColor.blackColor()
ball.fillColor = UIColor.redColor()
ball.position = CGPointMake(self.frame.width / 2 , self.frame.height / 4 - 100 )
self.addChild(ball)
// Left Wall Properties
leftWall.fillColor = UIColor.purpleColor()
leftWall.strokeColor = UIColor.blackColor()
leftWall.position = CGPointMake(self.frame.size.width / 3 - 45, self.frame.size.height / 2 - 400)
self.addChild(leftWall)
//Right Wall Properties
rightWall.fillColor = UIColor.purpleColor()
rightWall.strokeColor = UIColor.blackColor()
rightWall.position = CGPointMake(self.frame.size.width / 2 + 175, self.frame.size.height / 2 - 400)
self.addChild(rightWall)
}
override func touchesBegan(touches: Set<NSObject>, withEvent event: UIEvent) {
/* Called when a touch begins */
let touch = touches.first as! UITouch
let touchLocation = touch.locationInNode(self)
if touchLocation == ball.position{
ball.position = touchLocation
println("Touches");
}
}
override func update(currentTime: CFTimeInterval) {
/* Called before each frame is rendered */
}
}
LOL wow, this is a funny one, if touchLocation == ball.position I would be impressed if you can hit the exact pixel location of your ball. What you want is this:
let touch = touches.first as! UITouch
let touchLocation = touch.locationInNode(self)
let touchedNode = self.nodeAtPoint(touchLocation)
if touchedNode == ball{
...
But personally, what I would do is make a sub class of SKSpriteNode, and do your ball's touch code inside this child's touch routine
Im trying to create a method that when I touch a sprite named StartSprite Through my touchesbegan function it will print out something in my console. But for some reason when I click on the sprite nothing happens. This is my code.
import SpriteKit
class GameScene: SKScene {
let StartSprite = SKSpriteNode(imageNamed: "startLabel")
override func didMoveToView(view: SKView) {
let borderRect = CGRect(x: 0 , y: 0 , width: 400, height: 725)
let welcomeLabel = SKLabelNode(fontNamed: "welcome");
welcomeLabel.text = "Welcome";
welcomeLabel.fontColor = UIColor.whiteColor()
welcomeLabel.fontSize = 65
welcomeLabel.position = CGPoint(x: self.frame.width / 2, y: self.frame.height / 2 + 150)
self.addChild(welcomeLabel)
//StartLabel
let rectangleBorder = SKShapeNode(rect: borderRect)
rectangleBorder.position = CGPoint(x: 315, y: 25)
rectangleBorder.strokeColor = UIColor.whiteColor()
self.addChild(rectangleBorder)
self.backgroundColor = UIColor.grayColor()
StartSprite.position = CGPoint(x: self.frame.width / 2, y: self.frame.height / 2)
self.addChild(StartSprite)
println("Hello")
}
override func touchesBegan(touches: Set<NSObject>, withEvent event: UIEvent) {
let touch = touches.first as! UITouch
let touchLocation = touch.locationInNode(self)
if touchLocation == StartSprite.position{
println("Touches")
}
}
}
Your code requires that you touch exactly the one pixel at StartSprite.position.
Try this instead:
let p = StartSprite.convertPoint(touchLocation, fromNode: self)
if StartSprite.containsPoint(p) {
print("touched StartSprite")
}
If you're going to add more buttons, you might want to do this instead:
let target = nodeAtPoint(touchLocation)
if target == StartSprite {
print("touched StartSprite"
}
// check other buttons here