Has anyone done a sliding side panel on Godot?

Question

I tried but it looks (code) too scary. It works as it should, but I think it’s too bad. Here's the code, if you can, help optimize it.

func side_Bar_Control():
var posMouse = get_global_mouse_position().x
var sizSideBar = sideBar.rect_size.x

if Input.is_mouse_button_pressed(BUTTON_LEFT):
    if not openSideBar:
        if posMouse < sizW.x*0.1 and not firstPos:
            firstPos = posMouse
        if firstPos:
            if sideBar.rect_global_position.x >= 0:
                sideBar.rect_global_position.x = 0
            elif sideBar.rect_global_position.x <= 0:
                sideBar.rect_global_position.x = -sizSideBar + posMouse - firstPos
    elif openSideBar:
        if not firstPos and posMouse >= sizSideBar:
            firstPos = posMouse
        if firstPos:
            if sideBar.rect_global_position.x <= 0:
                sideBar.rect_global_position.x = posMouse - firstPos
            elif sideBar.rect_global_position.x == -sizSideBar:
                sideBar.rect_global_position.x = -sizSideBar
elif not Input.is_mouse_button_pressed(BUTTON_LEFT):
    if firstPos:
        lastPos = sideBar.rect_global_position.x
        if not openSideBar:
            if lastPos > -sizSideBar * 0.5:
                sideBar.rect_global_position.x = 0
                openSideBar = true
            else:
                sideBar.rect_global_position.x = -sizSideBar
        elif openSideBar:
            if lastPos < -sizSideBar * 0.5:
                sideBar.rect_global_position.x = -sizSideBar
                openSideBar = false
            else:
                sideBar.rect_global_position.x = 0
        firstPos = 0

Answer 1

Again with the down votes with no reason...

@Alexandr, instead of trying this with code, the animator is intended for this kind of thing.
Animations is a great way to create much better sliding menus

https://drive.google.com/open?id=1nDnmi7zPs8l0-ws2EeSWJld38apRQqGM
The above is a link to a Godot 3.1 Alpha sliding menu example. It is a zip file just download it, extract and run with your Godot.

In the file you will see this script and a detailed explanation on it:

extends Control

var IsMenuShown = true

func _on_HideMenu_button_up(): 
    if (IsMenuShown == false):
        $MwBAnimator.play("Slide In")
        IsMenuShown = true
    else:
        $MwBAnimator.play("MenuSlideOut")
        IsMenuShown = false

Comments

It does not fit a bit since my sidebar was made for android. And it was necessary that the user could push it with a finger. It is necessary that the panel moves behind it. Can this be realized with animation?

---

Yes, just allow the user to play the animation forward by sliding their finger. Call advance() on the animation you can use a positive float for forward and a negative for backward.

Also what you did above is very complex for such a simple thing. You could have used:
MousePosition.x - ClickedPosition.x = offset.x
Then you would just check that the scrolling object doesn't go too far with 2 if checks.

If you have some free time, try to learn Linear Algebra. You will use it for almost everything in games. Also awesome things like slicing meshes is done with linear algebra.