How to make objects exempt from SKcameranode movement - ios

Question

I'm currently developing a scrolling platformer game, and I was wondering how I could have the joystick object move along with the screen but still be useable. Ive tried a number of things, but none of them have produced any viable options. At the moment, the joystick is usable but will scroll off the screen with the rest of the map.
Here is my code:
import SpriteKit
import UIKit
var map = SKNode()
var idleFrames = [SKTexture]()
var walkFrames = [SKTexture]()
var idleFrames1 = [SKTexture]()
var walkFrames1 = [SKTexture]()
var attackFrames1 = [SKTexture]()
var idling = 0
var bullets = 0
var bullet = SKSpriteNode()
var leaf = SKEmitterNode()
var hud: SKSpriteNode?
class GameScene: SKScene, SKPhysicsContactDelegate {
var sp33d: CGVector = CGVectorMake(0.0,0.0)
var knock: CGVector = CGVectorMake(-10.0, 0.0)
var knock1: CGVector = CGVectorMake(10.0, 0.0)
var jsp33d: CGFloat = 170
var gameStick: Joystick?
var player: SKSpriteNode?
var ground: SKSpriteNode?
var ground2: SKSpriteNode?
var ground3: SKSpriteNode?
var canJump = false
var specialbutton = SKSpriteNode(imageNamed: "special")
override func didMoveToView(view: SKView) {
/* Setup your scene here */
hud = self.childNodeWithName("hud") as? SKSpriteNode
gameStick = Joystick()
gameStick?.createJoystick(hud!.frame.width/4, nameBack: "joystick", nameMoving: "joystick1")
gameStick!.backPart!.zPosition = 4
gameStick!.movingPart!.zPosition = 5
map.addChild(gameStick!.backPart!)
map.addChild(gameStick!.movingPart!)
self.addChild(map)
player = self.childNodeWithName("player") as? SKSpriteNode
ground = self.childNodeWithName("testGround") as? SKSpriteNode
ground2 = self.childNodeWithName("testGround2") as? SKSpriteNode
player?.physicsBody?.categoryBitMask = category.player
ground?.physicsBody?.categoryBitMask = category.ground
ground2?.physicsBody?.categoryBitMask = category.ground
player?.physicsBody?.collisionBitMask = category.ground
ground?.physicsBody?.collisionBitMask = category.player
player!.position = CGPoint(x: CGRectGetMidX(self.frame), y: 70)
specialbutton.position = CGPointMake(600, 83)
specialbutton.xScale = 0.165
specialbutton.yScale = 0.165
specialbutton.alpha = 0.5
map.addChild(specialbutton)
camera = self.childNodeWithName("camera") as? SKCameraNode
camera?.position = player!.position
if charnumber == 2{
player?.texture = SKTexture(imageNamed:"Sarah")
}
let idleAtlas = SKTextureAtlas(named: "idle.atlas")
var idleframes = [SKTexture]()
for var i=1; i<=4; i++ {
let idleframe = "JohnIdle\(i)"
idleframes.append(idleAtlas.textureNamed(idleframe))
}
idleFrames = idleframes
let walkAtlas = SKTextureAtlas(named: "jrun.atlas")
var walkframes = [SKTexture]()
for var i=1; i<=8; i++ {
let walkframe = "Johnrun\(i)"
walkframes.append(walkAtlas.textureNamed(walkframe))
}
walkFrames = walkframes
let idleAtlas1 = SKTextureAtlas(named: "Sarahidle.atlas")
var idleframes1 = [SKTexture]()
for var i=1; i<=4; i++ {
let idleframe1 = "SarahIdle\(i)"
idleframes1.append(idleAtlas1.textureNamed(idleframe1))
}
idleFrames1 = idleframes1
let walkAtlas1 = SKTextureAtlas(named: "Sarahrun.atlas")
var walkframes1 = [SKTexture]()
for var i=1; i<=8; i++ {
let walkframe1 = "Sarahrun\(i)"
walkframes1.append(walkAtlas1.textureNamed(walkframe1))
}
walkFrames1 = walkframes1
let attackAtlas1 = SKTextureAtlas(named: "sattack.atlas")
var attackframes1 = [SKTexture]()
for var i=1; i<=9; i++ {
let attackframe1 = "sattack\(i)"
attackframes1.append(attackAtlas1.textureNamed(attackframe1))
}
attackFrames1 = attackframes1
self.physicsWorld.gravity = CGVectorMake(0, -10.0)
self.physicsWorld.contactDelegate = self
}
func didBeginContact(contact:SKPhysicsContact) {
if (contact.bodyA.categoryBitMask == category.player) && (contact.bodyB.categoryBitMask == category.ground) {
idling = 0
johnmove()
print("hit")
canJump = true
}else{
}
}
func didEndContact(contact: SKPhysicsContact) {
if (contact.bodyA.categoryBitMask == category.player) && (contact.bodyB.categoryBitMask == category.ground) {
canJump = false
}
}
func bulletfire(){
bullet = SKSpriteNode(imageNamed: "bullet1")
leaf = SKEmitterNode(fileNamed: "leafParticle")!
bullets = bullets + 1
bullet.physicsBody = SKPhysicsBody(rectangleOfSize: CGSizeMake(0.1, 0.1))
bullet.physicsBody?.collisionBitMask = category.ground
bullet.xScale = 0.016
bullet.yScale = 0.016
bullet.physicsBody?.affectedByGravity = false
self.addChild(bullet)
self.addChild(leaf)
if player?.xScale == 1{
bullet.xScale = -0.016
bullet.position.x = (player?.position.x)! + 21.5
bullet.position.y = (player?.position.y)! + 15.4
bullet.physicsBody?.velocity = (CGVectorMake(1000.0, 0.0))
}else{
bullet.position.x = (player?.position.x)! - 21.5
bullet.position.y = (player?.position.y)! + 15.4
bullet.physicsBody?.velocity = (CGVectorMake(-1000.0, 0.0))
}
let action = SKAction.sequence([SKAction.waitForDuration(1), SKAction.removeFromParent()])
bullet.runAction(action, completion: {bullets = bullets - 1})
leaf.runAction(action)
}
func move(){
if player?.xScale == 1 {
player?.size = CGSizeMake(80,80)
player?.position.x = (player?.position.x)! - 20
}else{
player?.size = CGSizeMake(80,80)
player?.position.x = (player?.position.x)! + 20
}
}
func johnmove() {
if charnumber == 1 {
if idling == 1 {
player?.size = CGSizeMake(80,80)
player?.removeActionForKey("idle")
player?.runAction(SKAction.repeatActionForever(SKAction.animateWithTextures(walkFrames, timePerFrame: 0.12, resize: false, restore: true)),withKey: "walk")
}
else if idling == 0 {
player?.removeActionForKey("walk")
player?.size = CGSizeMake(80,80)
player?.runAction(SKAction.repeatActionForever(SKAction.animateWithTextures(idleFrames, timePerFrame: 0.6, resize: false, restore: true)),withKey: "idle")
}else if idling == 2 {
player?.removeActionForKey("walk")
player?.removeActionForKey("idle")
player?.size = CGSizeMake(80,80)
player?.texture = SKTexture(imageNamed: "JohnJump.png")
}
}else{
sarahhmove()
}
}
func sarahhmove() {
if idling == 1 {
player?.removeActionForKey("idle1")
player?.runAction(SKAction.repeatActionForever(SKAction.animateWithTextures(walkFrames1, timePerFrame: 0.12, resize: true, restore: true)),withKey: "walk1")
}
else if idling == 0 {
player?.removeActionForKey("walk1")
player?.runAction(SKAction.repeatActionForever(SKAction.animateWithTextures(idleFrames1, timePerFrame: 0.6, resize: false, restore: true)),withKey: "idle1")
}else if idling == 2 {
player?.removeActionForKey("wal1k")
player?.removeActionForKey("idle1")
player?.texture = SKTexture(imageNamed: "SarahJump.png")
}
}
override func touchesMoved(touches: Set<UITouch>, withEvent event: UIEvent?) {
for touch in (touches ) {
let location = touch.locationInNode(self)
var nodeTouched = SKNode()
nodeTouched = self.nodeAtPoint(location)
if nodeTouched.name == "joystick1" {
gameStick?.movingPart?.position = location
if location.x > gameStick!.backPart!.position.x + gameStick!.backPart!.frame.width/2{
gameStick?.movingPart?.position = CGPointMake(gameStick!.backPart!.position.x + gameStick!.backPart!.frame.width/2, gameStick!.movingPart!.position.y)
}
if location.y > gameStick!.backPart!.position.y + gameStick!.backPart!.frame.height/2{
gameStick?.movingPart?.position = CGPointMake(gameStick!.movingPart!.position.x, gameStick!.backPart!.position.y + gameStick!.backPart!.frame.height/2)
}
}
}
}
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
/* Called when a touch begins */
for touch in (touches ) {
let location = touch.locationInNode(self)
var nodeTouched = SKNode()
nodeTouched = self.nodeAtPoint(location)
if nodeTouched.name == "joystick1" {
gameStick?.movingPart?.position = location
if location.x > gameStick!.backPart!.position.x + gameStick!.backPart!.frame.width/2{
gameStick?.movingPart?.position = CGPointMake(gameStick!.backPart!.position.x + gameStick!.backPart!.frame.width/2, gameStick!.movingPart!.position.y)
}
if location.y > gameStick!.backPart!.position.y + gameStick!.backPart!.frame.height/2{
gameStick?.movingPart?.position = CGPointMake(gameStick!.movingPart!.position.x, gameStick!.backPart!.position.y + gameStick!.backPart!.frame.height/2)
}
}else if idling == 0 && charnumber == 2{
player?.size = CGSizeMake(80,80)
player?.removeAllActions()
if player?.xScale == 1 {
player?.size = CGSizeMake(80,80)
player?.position.x = (player?.position.x)! + 20
}else{
player?.size = CGSizeMake(80,80)
player?.position.x = (player?.position.x)! - 20
}
player?.size = CGSizeMake(80,80)
player?.runAction(SKAction.repeatAction(SKAction.animateWithTextures(attackFrames1, timePerFrame: 0.09, resize: true, restore: true),count: 1),completion: {self.move()})
player?.size = CGSizeMake(80,80)
player?.texture = SKTexture(imageNamed: "Sarah")
}else if charnumber == 1 && idling == 0{
player?.removeAllActions()
bulletfire()
let yrand = (arc4random_uniform(100) + 50)
let xrand = (arc4random_uniform(300) + 80)
let cartridge = SKSpriteNode(imageNamed: "casing")
cartridge.physicsBody = SKPhysicsBody(rectangleOfSize: CGSizeMake(0.1, 0.1))
cartridge.physicsBody?.collisionBitMask = category.ground
cartridge.xScale = 0.05
cartridge.yScale = 0.05
cartridge.zPosition = 3
cartridge.physicsBody?.restitution = 0.5
let spin = SKAction.rotateByAngle(CGFloat(M_PI), duration:0.6)
cartridge.runAction(SKAction.repeatActionForever(spin))
cartridge.physicsBody?.dynamic = true
let flash = SKEmitterNode(fileNamed: "muzzleFlash")
if player?.xScale == 1{
leaf.xScale = -1
flash?.position.x = (player?.position.x)! + 40
flash?.position.y = (player?.position.y)! + 15.3
cartridge.position.x = (player?.position.x)! + 27
cartridge.position.y = (player?.position.y)! + 15.3
player?.physicsBody?.applyImpulse(knock)
cartridge.physicsBody?.velocity = CGVectorMake(-CGFloat(yrand), CGFloat(xrand))
}else{
flash?.position.x = (player?.position.x)! - 40
flash?.position.y = (player?.position.y)! + 15.3
flash?.xAcceleration = -5000
cartridge.position.x = (player?.position.x)! - 27
cartridge.position.y = (player?.position.y)! + 15.3
player?.physicsBody?.applyImpulse(knock1)
cartridge.physicsBody?.velocity = CGVectorMake(CGFloat(yrand), CGFloat(xrand))
}
flash?.zPosition = 3
flash?.xScale = 0.15
flash?.yScale = 0.15
self.addChild(flash!)
self.addChild(cartridge)
let action = SKAction.sequence([SKAction.waitForDuration(0.15), SKAction.removeFromParent()])
let action1 = SKAction.sequence([SKAction.waitForDuration(1.5), SKAction.removeFromParent()])
flash?.runAction(action)
cartridge.runAction(action1)
johnmove()
}
}
}
override func touchesEnded(touches: Set<UITouch>, withEvent event: UIEvent?) {
for touch in (touches ) {
let location = touch.locationInNode(self)
var nodeTouched = SKNode()
nodeTouched = self.nodeAtPoint(location)
if nodeTouched.name == "joystick1" {
let act = SKAction.moveTo(gameStick!.backPart!.position, duration: 0.2)
gameStick?.movingPart?.runAction(act)
}
}
}
override func update(currentTime: CFTimeInterval) {
hud!.position = (camera?.position)!
let action = SKAction.moveTo((player?.position)!, duration: 0.01)
camera!.runAction(action)
player?.size = CGSizeMake(80,80)
leaf.position = bullet.position
print(canJump)
if (sp33d.dx > 1.5 || sp33d.dx < -1.5) && idling != 1 && idling != 2 {
idling = 1
johnmove()
}else if sp33d.dx < 0.1 && sp33d.dx > -0.1 && idling != 0 && idling != 2{
idling = 0
johnmove()
}
if sp33d.dx > 0.1 {
player!.xScale = 1
} else if sp33d.dx < -0.1 {
player!.xScale = -1
}
/* Called before each frame is rendered */
let vX = gameStick!.movingPart!.position.x - gameStick!.backPart!.position.x
let vY: CGFloat = gameStick!.movingPart!.position.y
if vY > gameStick!.backPart!.position.y + 20 && canJump == true{
sp33d = CGVectorMake(vX/13, jsp33d)
idling = 2
johnmove()
}else{
sp33d = CGVectorMake(vX/13, 0)
}
player?.physicsBody?.applyImpulse(sp33d)
}
}
This is the class in which the joystick is created:
import Foundation
import UIKit
import SpriteKit
class Joystick: UIView {
var movingPart: SKSpriteNode?
var backPart: SKSpriteNode?
let speed: CGFloat = 0.4
var joyStickCenter: CGPoint?
func createJoystick(dimensions: CGFloat, nameBack: String, nameMoving: String)
{
backPart = SKSpriteNode(imageNamed: "joystick")
backPart?.size = CGSizeMake(dimensions, dimensions)
backPart?.position = CGPoint(x: backPart!.size.width/2, y: backPart!.size.width/2)
backPart?.name = nameBack
backPart?.alpha = 0.4
movingPart = SKSpriteNode(imageNamed: "joystick")
movingPart?.size = CGSizeMake(dimensions*0.5, dimensions*0.5)
movingPart?.position = backPart!.position
movingPart?.name = nameMoving
movingPart?.alpha = 0.8
joyStickCenter = backPart!.position
}
func getDistance(p1: CGPoint, p2: CGPoint) -> Double
{
let firstPow = p2.x-p1.x
let secondPow = p2.y-p1.y
var squaredAdded = pow(firstPow, 2)
squaredAdded += pow(secondPow, 2)
let theSquirt = sqrt(Double(squaredAdded))
return theSquirt
}
func resetMovingPart()
{
movingPart?.runAction(SKAction.moveTo(joyStickCenter!, duration: 0.4))
}
func calcXYDiff(loc: CGPoint) -> CGPoint
{
let oldMovingPartPoint = movingPart?.position
movingPart?.position = loc
if movingPart!.position.x-joyStickCenter!.x > backPart!.frame.width/2
{
movingPart?.position.x = oldMovingPartPoint!.x
}
if movingPart!.position.y-joyStickCenter!.y > backPart!.frame.height/2
{
movingPart?.position.y = oldMovingPartPoint!.y
}
let x = loc.x - joyStickCenter!.x
let y = loc.y - joyStickCenter!.y
return CGPoint(x: x*speed, y: y*speed)
}
Any help would be greaty appreciated.
Thanks in advance!

Answer 1

Try calling the resetMovingPart() in your update() func.