                                                 y: (self.size.height * -3/5) - enemy.position.y,
                                                 duration: 15.0 + Double(arc4random_uniform(10)))
                 
-                //Move from bottom to top
+                // Move from bottom to top
                 case 1:
                     enemy.position = CGPoint(x: self.size.width/2 - CGFloat(arc4random_uniform(UInt32(self.size.width))),
                                              y: self.size.height * -0.55 + CGFloat(arc4random_uniform(UInt32(self.size.height/9))))

                                                y: (self.size.height * 3/5) - enemy.position.y,
                                                duration: 15.0 + Double(arc4random_uniform(10)))
                
                //In case of error
                default:
                    enemy.position = CGPoint(x: self.size.width/2 - CGFloat(arc4random_uniform(UInt32(self.size.width))),
                                             y: self.size.height * 0.55 + CGFloat(arc4random_uniform(UInt32(self.size.height/9))))

            enemy.textureArray = textureMatrix[enemyNumber]
        
            // Add enemy to scene
            switch arc4random_uniform(2) {
                // Move from top to bottom
                case 0:
                    enemy.position = CGPoint(x: self.size.width/2 - CGFloat(arc4random_uniform(UInt32(self.size.width))),
