i'm swift newbie trying loop b positional animation. i'm not sure how reset position animation can loop. appreciated.
import spritekit class gamescene: skscene { let cloud1 = skspritenode(imagenamed:"cloud_01.png") override func didmovetoview(view: skview) { view.scene!.anchorpoint = cgpoint(x: 0.5,y: 0.5) cloud1.position = cgpoint(x: -800,y: 0) cloud1.xscale = 0.5 cloud1.yscale = 0.5 self.addchild(cloud1) //defining sprite action & repeat let animatecloud1 = skaction.movetox(800, duration: 1.4); let repeatcloud1 = skaction.repeatactionforever(animatecloud1) let group = skaction.group([ animatecloud1,repeatcloud1]); //running action self.cloud1.runaction(group); } override func update(currenttime: nstimeinterval) { if(cloud1.position.x == 800){ cloud1.position.x = -800 } } }
if understand question correctly, want sprite move , forth between current location , new location specified.
if so, way create 2 animations , put them in sequence. repeat sequence forever.
let animatecloud = skaction.movetox(800, duration: 1.4) let animatecloudbackwards = skaction.movetox(cloud1.position.x, duration: 0) // sequences run each action 1 after another, whereas groups run // each action in parallel let sequence = skaction.sequence([animatecloud, animatecloudbackwards]) let repeatedsequence = skaction.repeatactionforever(sequence) cloud1.runaction(repeatedsequence) 