How to make a node replace another in chronological order? - swift

Question

Lets say I have five dice like so:
When I tap, Id like the die face with one dot to replace the one with two dots and (moving the 1 die across the row while moving the other die down the row) and if the last die is at the end, get it to replace the first die in the row. Would replacing the SKTextures have something to do with this? Thank you in advance.
Edit:
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
for touch: AnyObject in touches {
let touchLocation = touch.locationInNode(self)
let touchedNode = self.nodeAtPoint(touchLocation)
let texRight = SKAction.setTexture(SKTexture(imageNamed: "DieFace1"))
DieFace2.runAction(texRight)
}
}
Edit 2:
import SpriteKit
var arrayOfDieFaces = [onE, twO, threE, fouR, fivE]
class GameScene: SKScene {
}
func replace() {
var count = 1
while count <= 5 {
let changeTexture = SKAction.setTexture(SKTexture(imageNamed: "Dice\(count)"))
if count == 5 {
arrayOfDieFaces[0].runAction(changeTexture)
}
else{
arrayOfDieFaces[count].runAction(changeTexture)
}
count += 1
}
arrayOfDieFaces.append(arrayOfDieFaces[0])
arrayOfDieFaces.dropFirst()
}
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
for touch: AnyObject in touches {
let touchLocation = touch.locationInNode(self)
let touchedNode = self.nodeAtPoint(touchLocation)
replace()
}
}

Answer 1

This approach changes the position of each dice instead of changing its texture. By changing the positions, it maintains the ability to uniquely identify each dice (e.g., by name).
First, create an SKNode called dice and define the size and spacing between each dice.
let dice = SKNode()
let diceSize = CGSizeMake(10, 10)
let spacing:CGFloat = 2
Second, create your dice nodes and add them, in order, to the dice SKNode and set the positions of each dice with
for i in 0..<6 {
let sprite = SKSpriteNode ...
sprite.physicsBody = SKPhysicsBody( ...
sprite.physicsBody?.categoryBitMask = UInt32(0x1 << i)
sprite.position = CGPointMake(CGFloat(i)*(diceSize.width+spacing) , 0)
dice.addChild (sprite)
}
// Center SKNode in the view
dice.position = CGPointMake (CGRectGetMidX(view.frame),CGRectGetMidY(view.frame))
addChild (dice)
Note that the position of each dice is based on the position of the node within the array.
Lastly, add the following to your code.
func rotate() {
// Get last element in the array
if let last = dice.children.last {
// Remove the last dice from the SKNode
last.removeFromParent()
// Move the last to the front of the array
dice.insertChild(last, atIndex: 0)
// Update the positions of the
for i in 0..<dice.children.count {
dice.children[i].position = CGPointMake(CGFloat(i)*(diceSize.width+spacing) , 0)
}
}
}
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
for _ in touches {
rotate()
}
}

Answer 2

I think this should work (not tested) assuming your DieFaces are from 1 to 6:
var arrayOfDieFaces = [DieFace1, DieFace2, DieFace3, DieFace4, DieFace5, DieFace6]
func changeTextures() {
var count = 1
while count <= 6 {
let changeTexture = SKAction.setTexture(SKTexture(imageNamed: "DieFace\(count)"))
if count == 6 {
arrayOfDieFaces[0].runAction(changeTexture)
}
else{
arrayOfDieFaces[count].runAction(changeTexture)
}
count += 1
}
arrayOfDieFaces.append(arrayOfDieFaces[0])
arrayOfDieFaces.dropFirst()
}
Just call this fucntion inside the touchesBegan() function.