I have an issue where characters sometimes dont move. I use the same bp to spawn in the first 20 or so characters they all move fine, THen 1 pawns in that is “Stuck”. THen the next is stuck. I placed 50 characters in the level to see if it was spawn related about 10 percent of them are stuck. It does not matter which move function I use.
I am at a loss here. Any ideas of what next troubleshooting steps should be?
Again every pawn is runing the same scripts. Every level has this issue. Some pawns just dont function while others do.
This appears to be a bug in the DetourAIController. Reproduction Steps:
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Install New top down template Project, Blueprint, Desktop, scalable, with no starter content.
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create a Black Board. Add 1 key that is a vector called MoveLocation
3 Create a Behavior Tree Task called BTT_FindLocation.
Get player location. Use that as origin for GetRandomReachablrPointInRadius.
Set the radius to 400.
Branch on Result.
False finish excute false.
True set the Black Board Key MoveLocation to the found location. Finish Execute True.
Save the new Task.
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Create a Behavior TRee With a sequence. Call it BT_Repro Attacched to that sequence is the new BTT_FindLocation. and a move to node using the MoveLocation key.
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Create a new Blueprint from DetourAIController. call it ReproAIController.
On Begin Play Connect RunBehaviorTRee. Select BT_Repro as the BTAsset.
Save the blueprint.
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Create a New blueprint from Character. Call this ReproCharacter.
Set the AI Controller class to ReproAIController.
Set the Skeletal Mesh to SKM_Manny.
Save the new asset.
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Place 60 copies of the new ReproCHaracter on the Nav mesh in the level.
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Hit play In Editor.
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Observe that some characters do not move.
Reparent the ReproAIController to AICController instead of DetourAIController and the problem goes away.
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[/Script/AIModule.CrowdManager]
MaxAgents=100
MaxAgents is set to 50 in C++ code. I’ve added the config to expand this value. The problem goes away.