How to use Gameplay Debugger

Development Programming & Scripting C++
1

Hi!

While trying to debug my EQS problem, I’ve stumbled upon GameplayDebugger module. It seems to be a very powerful tool, but I have no idea how to use it.
Can you give me some tips?

2

The easiest way to do it is to run the game, aim at the AI (or just have it more or less at the center of the screen), and press ’ key (quote).
You should be able to display GameplayDebugger’s info in Simulation mode - just select the AI like a regular environment element and it should kick in. You need to make sure you have AI debugging flags enabled for your viewport, AIDebug and GameplayDebug under Developer.
Depending on the code version our’re using you may want to look for GameplayDebuggingReplicator in your Scene Outline - it will allow you to control some of the details of data being displayed.

Hope it helps!

3

Thanks for your answer! I’ll definitely try it the next time I have problems with AI.

4

Hi there,

Could someone explain what happened with Gameplay Debugger in 4.13? I can’t start it neither using EnableGDT command nor hotkey. Seems like it is obsolete but what I am supposed to use instead?

enablegdt.png

5

Bump. This is extremely important, could an Unreal dev please give a short statement as to what the status of the Gameplay Debugger is and how to use it? Specifically I mean the debug draws for EQS, AI Perception, Pathfinding and so on.

6

I am running on 4.13 and the Gameplay Debugger works fine for me. There were some API changes, but if you aren’t interested in custom functionality the base debugger should work as it used to.

The default activation key is Apostrophe.

In the editor, open Project Settings.
Under the Engine header there is now an entry for Gameplay Debugger.
You will find different settings such as the Activation Key in that section.

7

Confirm that it works when activated by hotkey. Just Console command is vanished.

8

Could you post a screenshot of what it looks like? Might be a differnet problem since I don’t have an american Keyboard.

9

Here is screenshot:

gdt.png
gdt.png948×633 239 KB

10

If you’re still having issues with this, in the main viewport, click ‘Show’ and under the ‘Developer’ option check the box beside ‘AI Debug’

Just clicked on a pawn after that and it popped right up…

11

AI Perception

Hi there,
Is there a key, other then “4” on NumberPad? I am working from a laptop and it does not have numberpad.

Thanks so much to all of you,
Eddie

12

AI Perception

Hi there,
Is there a key, other then “4” on NumberPad, for activating AI Perception details? I am working from a laptop and it does not have numberpad.

Thanks so much to all of you,
Eddie

13

May be a dumb question, but have you used the normal number keys?

14

Ha, you know I second guessed myself the moment I read this…but yeah, I tried the regular #4 and did not see the lines or spheres that were in the tutorial they just did.

15

Yeah just checked, it is bound to the numpad ‘4’.

If you go to Project Settings -> Engine -> Gameplay Debugger, you can change the key bindings though :slight_smile:

2 Likes
16

Thanks for the help, I will try that