Swift - SKAction moveByX, How to get my node to move from the top/down - swift

Question

please forgive me as I'm a bit of a Swift noob and am creating my first game :D
Ok, so I have two nodes... one is Guava and the other is Pepper. Guava moves from the bottom of the screen to the top. I want the Pepper to move from the top of the screen to the bottom. Here's the code I have, which works fine for the Guava.
// movement of guavas
let guavaToMove = CGFloat(self.frame.size.width + 2.0 * guavaNodeTexture.size().width)
let moveGuava = SKAction.moveByX(-guavaToMove, y: self.frame.size.width, duration: NSTimeInterval(0.01 * guavaToMove))
let removeGuava = SKAction.removeFromParent()
// movement of peppers
let pepperToMove = CGFloat(self.frame.size.width + 2.0 * pepperNodeTexture.size().width)
let movePepper = SKAction.moveByX(-pepperToMove, y: self.frame.size.width, duration: NSTimeInterval(0.01 * pepperToMove))
let removePepper = SKAction.removeFromParent()
GuavaMoveAndRemove = SKAction.sequence([moveGuava,removeGuava])
PepperMoveAndRemove = SKAction.sequence([movePepper,removePepper])
Now I have the Guava Node anchored to the bottom of the screen and it floats up perfectly. I have the Pepper Node anchored to the top of the screen and am trying to get it to float down in a similar fashion.
Here is the code for both functions, spawnGuava and spawnPepper where both nodes/textures are anchored:
func spawnPepper(){
//The way the Guava spawn and move
let pepperNode = SKNode()
let pepper = SKSpriteNode(texture: pepperNodeTexture)
pepper.setScale(0.30)
pepper.position = CGPointMake (self.size.width + 140, self.size.height * 0.75)
pepper.alpha = 0.75
pepper.physicsBody = SKPhysicsBody(rectangleOfSize: pepper.size)
pepper.physicsBody?.affectedByGravity = false
pepper.physicsBody?.dynamic = true
pepper.physicsBody?.categoryBitMask = PhysicsCatagory.Guava
pepper.physicsBody?.collisionBitMask = 1
pepper.physicsBody?.contactTestBitMask = PhysicsCatagory.Boognish
pepper.zPosition = 50
pepperNode.addChild(pepper)
pepper.runAction(PepperMoveAndRemove)
self.addChild(pepperNode)
if scoreIncreased == true {
}
//the way the pepper collide
}
func spawnGuava(){
//The way the Guava spawn and move
let guavaNode = SKNode()
let guava = SKSpriteNode(texture: guavaNodeTexture)
guava.setScale(0.75)
guava.position = CGPointMake (self.size.width - 40, self.size.height * 0.05)
guava.physicsBody = SKPhysicsBody(rectangleOfSize: guava.size)
guava.physicsBody?.affectedByGravity = false
guava.physicsBody?.dynamic = true
guava.alpha = 0.75
guava.physicsBody?.categoryBitMask = PhysicsCatagory.Guava
guava.physicsBody?.collisionBitMask = 1
guava.physicsBody?.contactTestBitMask = PhysicsCatagory.Boognish
guava.zPosition = 0
guavaNode.addChild(guava)
guava.runAction(GuavaMoveAndRemove)
self.addChild(guavaNode)
if scoreIncreased == true {
}
//the way the guava collide
}
Please help me configure this code accordingly so that the peppers fall from the sky :)
THANKS in advance. First post :)
FYI: I have tried modifying the code many times myself to no avail, so I have reverted it to the baseline you see now. IF I anchored the pepper to where the Guava is anchored then both would float up at the same time.

Answer 1

You're trying to move guavas and peppers in the opposite direction, but it seems like you are moving them in the same direction. Try removing or adding negative signs in movePepper:
let movePepper = SKAction.moveByX(-pepperToMove, y: -self.frame.size.width, duration: NSTimeInterval(0.01 * pepperToMove))

Answer 2

// movement of peppers
let pepperToMove = CGFloat(self.frame.size.width + 2.0 * pepperNodeTexture.size().width)
let movePepper = SKAction.moveByX(-pepperToMove, y: self.frame.size.height / -1, duration: NSTimeInterval(0.01 * pepperToMove))
let removePepper = SKAction.removeFromParent()
just has to divide the y value by a negative, derp... :D