Swift - SpriteKit CGPoint Alignment

问题

I'm working on a project in swift and I am able to make a sprite. I am trying to make a sprite at a number of different locations. As a test I replaced the code in the game scene to be:

class GameScene: SKScene {
    override func didMoveToView(view: SKView){
        let wall = SKSpriteNode(imageNamed: "Wall")
        wall.position = CGPoint(x: 289, y: 0)
    }    
}

What I do not understand is this code makes a sprite in the lower left corner. As expected in the y direction only half of the sprite shows, but the x direction seems completely off. If I try to set the x value to any number below 289 it will not appear. Is the 0,0 point really 289,0 or am I missing something? I am programming for iphone 6 if that makes a difference.

Thank you!

回答1:

Your scene it is not necessarily the same size of your view. You can check the size of your scene as follow:

view.scene!.frame.size
view.scene!.frame.width
view.scene!.frame.height
view.scene!.frame.midX
view.scene!.frame.midY

来源：https://stackoverflow.com/questions/30114374/swift-spritekit-cgpoint-alignment