How do I limit how far a sprite can go?

Hello!

I want to make some sort of shooter game with mobile support in C3.

The main player sprite has a bullet behavior and its speed is two X the distance between the joystick sprite and its initial location. The joystick sprite has a drag-drop behavior and when it isn't being dragged, it goes back to its initial location. The player's angle is also calculated by using "angle(x, y, joystick.x, joystick.y)"

However the user can move the joystick all the way to the top-right which will make the player move way too fast, so i want to know how to stop the joystick sprite from moving more than 128 pixels from its initial location.

Thanks in advance.

PS: here is the project if you need to try it out:

drive.google.com/open

Thank you! You got exactly what I wanted but I don't seem to understand how this works

If you can explain a bit I would be very thankful

PS: I think this link works, try it if you need to:

drive.google.com/open

Can you say what exactly you do not understand or is everything unclear?

I don't know what is touch index and there is this event that I right-clicked and copied as text:

+ Touch: Has touch Stick.TouchIndex

+ Stick: TouchIndex > -1

-> Stick: Set position to StickArea (image point 0)

-> Stick: Move min(distance(StickArea.X, StickArea.Y, Touch.X(1), Touch.Y(1)), (StickArea.Width - Stick.Width) ÷ 2) pixels at angle angle(StickArea.X, StickArea.Y, Touch.X(1), Touch.Y(1))

I need help understanding this plz

That explains a lot

Thank you so much!