How to optimize acceleration / friction function more

Hello!

In a few words what the code does:

It begins to spin at a speed of 2 degrees and 5 seconds, it speeds up to 20 degrees per second.
After that, the rotational speed remains 20 for 10 seconds and after that dry 10 are more
He gets in the service of friction where it slows down to 2deg dry.

but! as I am not good with optimization and writing clean code I have a need to ask if this is a good code or we can do even better (more optimized and cleaner).

The code is the following:

Box() is a simple box shape, nothing more


          import flash.display.MovieClip;
          import flash.events.Event;


          public class Main extends MovieClip
          {

                    protected var _box:Box = new Box();

                    private var fps:Number = stage.frameRate;
                    private var step:Number = 20;
                    private var minStep:Number = 2;
                    private var time:Number = 5;
                    private var increment:Number = (step - minStep) / (time * fps);
                                                                                          // 20 - 2 / 5 * 30
                                                                                          // 18 / 150
                                                                                          // 0.12
                    protected var timePassed:Number = 0


                    public function Main()
                    {
                              _box.x = stage.stageWidth/2 - _box.width/2;
                              _box.y = stage.stageHeight/2 - _box.height/2;
                              this.addChild(_box);

                              stage.addEventListener(Event.ENTER_FRAME, constantMovement);
                    }



                    private function friction():void
                    {
                               _box.rotation += step;
                                  step -= increment;
                                  step = Math.max(2, step);
                    }

                    private function acceleration():void
                    {
                               _box.rotation += minStep;
                               minStep += increment;
                               minStep = Math.min(minStep, 20);
                    }

                    private function constantMovement(event:Event)
                    {
                              if(minStep < 20)
                              {
                                        acceleration()
                              }
                              else if(minStep >= 20 && timePassed <= 10)
                              {
                                        _box.rotation += 20;
                                        timePassed += 10 / (time * fps)
                                        trace("timePassed :" + timePassed)
                              }
                              else if (minStep >= 20 && timePassed >= 10)
                              {
                                        friction();
                              }
                    }


          }
}

If there is something more, that it can be please tell me / help me.

You can do the following:

1. replace the last ElseIf (minStep > = 20 & timePassed > = 10) with just something else, because the condition would be always true control reaches here.

2 store the value 10 / (time * fps) in a private variable and use that directly, rather than assess every time that the value remains constant.

You can also try to replace the if-else-if block with a block switch-box on a state variable in the class (with the values 0, 1, 2 mean acceleration, constant speed and slows down, you can set a constant symbolic to hold the values). Initialize the variable with the value 0 (acceleration), change to 1 when minStep becomes 20 and so on. Point No. 2 is always good too.

DIA-

Tags: Adobe Animate

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