Limit movement of touch button control in circle? {SOLVED}

[san_san]

Can't find it in the forum, probably someone help me with solution, it must be simple.

I have setup touch movement control for mobile game on android but can't figure out how to limit movement of this Button in Circle on the screen.

So far i only setup to limit it in X and Y axis but this is not a correct thing.

[djaydino]

Hi,
I don't know what you mean, can you show some pictures / videos?

[san_san]

Hi,
Thanks for reply, video -

Can't figure out how to limit, this white control button in some circle, as it usually work in mobile games.

[djaydino]

Hi,
You could try with float clamp actions to limit the range.

[san_san]

Yes it works but in square(Y\X axis), when i need a Circle like it usually in mobile games.

[jeanfabre]

Hi,

For this, i solved it by having an invisible touch area that the actual button follow, and i clamp the position magnitude which then constraint it into a circle.

check out "uguiJoysticj" on the Ecosystem, there is a fully working sample for this.

Bye

Jean

[san_san]

Thanks, it's works for me.
"invisible touch area" - i setup it using touch object but if i change aspect ratio they divergent, so move button not working.

Do you somehow adjust scree scale for both UI and Touch object or use only UI?
Invisible UI must have Ondrag callback option in Playmaker Ugui Compoment?

[san_san]

Solved
Use Playmaker Pointer u Gui - function on pointer enter
Place them on invisible buttons - Aplha - 0