UI Canvas Lua - Find Element By ID

Hi @REDACTEDUSER https://docs.aws.amazon.com/lumberyard/latest/developerguide/lua-scripting-ces-api-ui-uifadercomponent.html

The assets for the the fader samples can be found here: dev\Gems\LyShineExamples\Assets\UI\Canvases\LyShineExamples\Comp\Fader
dev\Gems\LyShineExamples\Assets\UI\Scripts\LyShineExamples\Fader\

Hi RobP,

Thanks for the reply, this is what I was assuming but was hoping it wasn't the case. I have been reading through that documentation and was hoping to find something similar to find by id, because object names are subject to change, and I can't use the Entity property picker because the script was located outside the canvas. I have created a work around so I'm not concerned about it working but rather it being modular and convenient to change down the road.

In that same tutorial it also references a function called HasFade(entityId), I was wondering if there was a function similar or if that too has been deprecated?

Hi @REDACTEDUSER

I'm curious what the use case is for HasFade. Why does the script need to know if a UI element has the UiFaderComponent on it?

Rob

But that doesn't answer my question, you are just pointing me to more documentation which I have already seen. I am asking if there is a function which returns true or false whether a Fader component is attached (or if there is a more generic one to test for other types of components).

I guess now that there isn't a "find by" type of function it is less useful, however I feel like it would be good to have a function that simply tests for whether the object grabbed "Has blank". It also is good for sanity checks and error testing.

Hi Chase,

This is really good to know! So when you say we, do you mean at Amazon? Because my followup question to you saying that is, should I just be using C++ to do anything in Lumberyard because it seems that the Lua functions/buses can be deprecated and just generally hard to get working.

Hi @REDACTEDUSER

bool isRadioButton = UiRadioButtonBus::FindFirstHandler(radioButton) != nullptr;

Hi @REDACTEDUSER

Using C++ vs Lua really depends on what you want to do, your desired workflow, the "customer" of your work, etc. Anything you can do in Lua, you can do in C++, but not everything in C++ is available in Lua.

Lua has a very fast workflow, great for rapid iteration, and is more accessible to other members of your team that aren't engineers/programmers. C++ is more powerful but has a slower turnaround time and (for the most part) is generally inaccessible to anyone who doesn't have coding experience.

If it helps, the "UiFeatures" level in SamplesProject was done completely using Lua.