Can you disable actors?

Heisenburger · June 18, 2014, 6:35pm

Is there a way to disable an actor so they (and their children) do not display, tick/process, collide without explicitly going through and setting those states manually? Essentially ‘destroy’ them with ability to bring them back.

anonymous_user_33800a51 · June 18, 2014, 7:40pm

Hey Heisenburger,

You can set an Actor to be Hidden in game via Blueprints. Hidden Actors are effectively removed from level in terms of collision, visibility, physics interactions or tick events, etc. You can then unhide it when whatever condition you want is met.

Hope that helps!

Isaac_Nichols · June 18, 2014, 7:50pm

Thanks ,
This answers a question I had posted earlier.

Xarol · January 31, 2015, 8:06pm

See Actor destroys automatically after setting hidden and disabling collision - Editor Scripting - Epic Developer Community Forums.

When I tried just setting actor hidden in game I couldn’t ever make it visible. When I tried setting visibility of mesh, it worked better.

anonymous_user_d9744154 · February 1, 2015, 11:21am

Hi,

I don’t know why, but it doesn’t seems to work for me

When I set “Hidden In Game” to true, it just make my actor not visible, but it still have collision, it’s still focuses by AI, and if I don’t unpossess it from my controller, I can still run, attack and so on.

Do you have an idea of what is going on ?

Thanks !

Xarol · February 1, 2015, 7:53pm

I don’t really know what setting hidden in game is really supposed to do so I can’t help directly. But you can disable collision with a separate blueprint function.

As for AI, that’s something I hadn’t thought of. You could set a variable or interface function or something so that AI can check if you are suppossed to be hidden and ignore you.

Hope that helps.

Good luck,
-X

anonymous_user_d9744154 · February 2, 2015, 12:02pm

Yeah, ok, I’ll do it like that.
Thank you

anonymous_user_33800a51 · February 3, 2015, 8:30pm

Hey all,

Some clarification:

I’m not certain whether Hidden was doing more previously than it does now, but to properly make an Actor in level “disabled,” you need to do three major things: Set Hidden in Game, Set Enable Collision, and Set Actor Tick Enabled. Hidden in Game and Visible refer to two different things. Visible only means that you can see it in Viewport during editing. Hidden in Game only refers to visibility during game. So you can have an Actor that is Visible while editing and Hidden during gameplay. default is Visible while editing and NOT Hidden in Game for most Actors.

To effectively hide an Actor and remove its collision, you need to explicitly declare both, either with Construction Script or during Play. In 4.7, you can also use a new node, Set Actor (or Component) Tick Enabled, to make sure nothing else is running.

Hope that helps!

DesertEagle_PWN · May 16, 2015, 11:44pm

Any chance someone could take a few minutes to give us an actor native function to Set Hidden In Game On/Off, Set Collision On/Off and Set Tick On/Off? Would be pretty convenient for object pools and like and wouldn’t take long to do. May just do it myself before too long.

anonymous_user_33800a51 · May 19, 2015, 3:06pm

Hi DesertEagle_PWN,

It’s unlikely devs will implement a combo function like that, but it should be easy enough to create one in Blueprints or code in a Blueprint Library and use it across your project. If you decide to develop one and create a pull request, devs can take a look a decide from there.

MattWoelk · August 14, 2016, 1:23am

Here’s one I made:

bvisness · December 20, 2016, 2:47pm

This simply isn’t true. Set Actor Hidden in Game just prevents it from rendering, but it still has collision and runs actor scripts, which is why you need solution in accepted answer.

anonymous_user_49a519741 · July 11, 2017, 2:54am

is incorrect. Everyone should take answer which was accepted. Here is a pic proving “Hidden in Game” only handles rendering ( stairs are hidden):

darkgaze · August 23, 2017, 5:38pm

This is not right answer. Please fix!

Ysgrathe · September 19, 2019, 4:25pm

An old thread I know, but google spat it out in answer to my question and it worked perfectly.
I am using this triple: SetActorEnabled>>SetActorEnableCollision>>SetActorHiddenInGame
to swap my player between different character classes and back again (I have a separate character for dialog functions with NPCs)
Engine Version 4.23

egerge1y · May 2, 2023, 4:40pm

I was same problem at Enemy Actor Blueprints, i find a sollution this.
I used “Set Actor Hide in Game-on”, “Set Actor Tick Enabled-off” and “Set Actor Enable Collision-off” the enemy not can run correct on the “NavMeshBoundVolume”…
Then i go the “Movement Component” and switch Off “UseRVOAudiance”
Then other enemy now possible to wald through the other hidde enemies on the nav mesh bound.

nostrodamned · October 10, 2024, 12:13pm

old thread but another way Better way to disable lights (or meshes) in Unreal Engine - crwjaakko (creativewithjaakko.com)

benildabulman · October 12, 2024, 9:59am

Ada beberapa cara untuk menonaktifkan sebuah aktor dalam sistem permainan tanpa harus mengatur semua status secara manual. Salah satu pendekatan yang dapat digunakan adalah dengan menerapkan metode ‘disable’ atau ‘hide’ pada aktor tersebut dan anak-anaknya. Dalam banyak kerangka kerja dan engine permainan, Anda bisa menggunakan fungsi berikut 66D APK