AI Not moving

Development Programming & Scripting AI
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1

My AI Character is not moving anywhere, not with BT “Move To Node” nor with simple Simple Move to Location/Actor.

  • Yes, there is a NavMesh Bounds volume in level. I’m building the mesh at runtime (I have changed the setting in Navigation Mesh → Runtime and I am calling the Build() function), but I also tried with a static nav mesh in a map with no geometry and it still won’t work.
  • The character is being possessed by the controller that runs the behaviour tree.
  • The character movement component is set up as default so it should be able to move. \
  • I tried changing the cell and tile sizes and agent settings to many values in Navigation Mesh Project Settings.

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The AI Debug shows the path that the character should take, and it changes when the target location changes (inside the BT).
I ran out of ideas and read every other question on the matter. I don’t really need to use the nav mesh but I don’t want to have to implement my own AI movement logic just because of a bug.

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2

That covers everything i wouldve known to check other than collisions and whethet the pawn is constrained to a plane or any axes.

3

Fixed it!
BeginPlay implementation was empty in my AI Controller C++ class. Removed the function and now it works. Apparently something important does happen at some point in the BeginPlay hierarchy but there were no errors other than an occasional ensure fail.

4

Yep, I guess there were not many options. But in the end it was my fault :’(

5

Glad to hear it!

6

Had a similar problem and had to include the Super::BeginPlay() / Super::OnPossess() calls within my C++ Methods

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