TouchInputOverrides.swift

override func touchesBegan(touches: Set<NSObject>, withEvent event: UIEvent) {
    /* Called when a touch begins */
    
    for touch in (touches as! Set<UITouch>) {
        let location = touch.locationInNode(self)
        
        moveShipTo(location)
        self.fireWeapon = true
    }
}

override func touchesMoved(touches: Set<NSObject>, withEvent event: UIEvent) {
    
    for touch in (touches as! Set<UITouch>) {
        let location = touch.locationInNode(self)
        
        moveShipTo(location)
    }
}

override func touchesEnded(touches: Set<NSObject>, withEvent event: UIEvent) {
    for touch in (touches as! Set<UITouch>) {
        let location = touch.locationInNode(self)
        
        self.fireWeapon = false
    }
}