I have an SKEmitterNode that is acting strange in different versions of iOS. If you look at the screenshot below, you will see that when my scene is loaded, the emitter I am using dumps an odd group of rain drops when the scene first loads.
The strangest part is that this happens in some versions of iOS like 8.1 and 9.2, but in some other versions like 9.0 and 7.0 it runs as expected. (meaning no initial clump of drops, just randomly spaced drops.)
Here is my code in didMoveToView:
let rainEmitterPath:NSString = NSBundle.mainBundle().pathForResource("homeScreenRain", ofType: "sks")!
self.rainEmitter01 = NSKeyedUnarchiver.unarchiveObjectWithFile(rainEmitterPath as String) as! SKEmitterNode
self.rainEmitter01.position = CGPointMake(device.x/2, device.y + 50)
self.rainEmitter01.targetNode = self
self.rainEmitter01.particleZPosition = 6.0
self.rainEmitter01.particleBirthRate = 300
self.rainEmitter01.particleSpeed = 5000 * worldScale
self.rainEmitter01.particleSpeedRange = worldScale * 1000
self.rainEmitter01.particleScale = worldScale
self.rainEmitter01.particleScaleRange = worldScale
self.rainEmitter01.particlePositionRange = CGVector(dx: device.x + 100, dy: 5)
//self.rainEmitter01.advanceSimulationTime(7.0)
self.addChild(rainEmitter01)
I have tried using the advanceSimulationTime method, but for some reason the group of drops still falls even after the delay.
I have also tried varying the y size of the position range because I figured that my height of 5 was causing this, but nothing changed even when I make the height equal to the size of the screen, and a height of 5 still works in other versions of iOS.
Anyone know why this is happening and a solution/workaround? Thanks in advance.
