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xcodeswiftsprite-kitcore-motion

Using Core Motion with swift

I'm trying to move a SKSpiteNode only on the x-axis using the device motion. Tilting the device to the left or right to move the sprite. I'm reading about CoreMotion but I have doubts on how to implement this in my game.Is CoreMotion the right tool for this? And which functions to use ? Thank you any help appreciated.

Solution

  • You should use CoreMotion framework. Here is how you can listen core motion updates.

    1- Instantiate CMMotionManager instance. This class is responsible to deliver motion events. 

    lazy var motionManager: CMMotionManager = {
    let motion = CMMotionManager()
    motion.accelerometerUpdateInterval = 1.0/10.0 // means update every 1 / 10 second
    return motion
}()

    2- Call startAccelerometerUpdates method of motion manager. This will start your motion manager. 

    self.motionManager.startAccelerometerUpdates()

    3- In the update method of your SKScene subclass you can read accelerometer values from motion manager. Here is how i used it.

    let xForce = self.motionManager.accelerometerData.acceleration.x
self.playerNodeBody.velocity = CGVector(dx: xForce, dy: 0)