Patchfinding returning nil even with ImprovedSearch feature enabled

[MagicLuau (self)]

System Information:
Windows 11 Pro 24H2

[MagicLuau (self)]

this is the code used in the issue:

function AI:MoveToPlace(character :Model,place)
	if not place or not workspace.Targets:FindFirstChild(place) then
		warn("Invalid arguments sent to AI")
		return
	end

	local humanoid = character:FindFirstChildOfClass("Humanoid")
	local root = character:FindFirstChild("HumanoidRootPart")

	-- Create waypoints
	local waypoints = PatchFindingService:CreatePath(
		{
			AgentRadius = 3,
			AgentHeight = 6,
			AgentCanJump = false,
		})

	local sucess,errorm = pcall(function()
		waypoints:ComputeAsync(root.Position, workspace.Targets[place].Position)
	end)

	if sucess and waypoints.Status == Enum.PathStatus.Success then
		AIState = "Moving"

		for i,waypoint in pairs(waypoints:GetWaypoints()) do
			if waypoint.Action == Enum.PathWaypointAction.Jump then
				humanoid:ChangeState(Enum.HumanoidStateType.Jumping)
			end
			
			--if waypoints.Unblocked  then
			--	humanoid:MoveTo(workspace.Targets[place].Position + Vector3.new(0,3.2,0))
			--	break
			--end
			
			humanoid:MoveTo(waypoint.Position)
			humanoid.MoveToFinished:Wait()
		end

		root.CFrame = workspace.Targets[place].CFrame + Vector3.new(0,3.2,0)
	else
		warn(errorm)
	end
end

[Judgy_Oreo (phoenixwhitefire)]

You are mistaken in your code. PathfindingService will never throw errors under normal circumstances, so sucess will always be true, even when waypoints.Status is not Enum.PathStatus.Success. This also means that errorm is always nil, as no error will ever occur.

Ok, yes, I do know one error that can occur, however it usually only happens when your NPC has fallen out of the world or has been flung, and moved several thousands of studs away from the pathfinding goal. This shouldn’t be anything to worry about normally and, if it occurs, the NPC is probably unable to reach the goal anyway so there’s no failsafe other than despawning it.

[oldmannt]

Hello MagicLuau,

Thank you for reporting this issue. Judgy_Oreo is correct in pointing out that PathfindingService:ComputeAsync rarely throws Lua errors that would be caught by pcall. Therefore, the errorm variable will likely always be nil, even when waypoints.Status is not Enum.PathStatus.Success.

Based on the information provided and the fact that your warn(errorm) is outputting “nil”, it’s highly probable that the waypoints.Status is Enum.PathStatus.NoPath. This means the pathfinding service was unable to find a valid path between the root.Position and workspace.Targets[place].Position.

If you believe that PathfindingService should be returning a path in this scenario, despite the NoPath status, please provide us with a minimal reproduction place file and the following information so we can investigate further:

• Pathfinding Parameters: The exact parameters you are passing to PatchFindingService:CreatePath (in this case: AgentRadius = 3, AgentHeight = 6, AgentCanJump = false).
• StartPosition: The root.Position of the character when ComputeAsync is called.
• EndPosition: The workspace.Targets[place].Position of the target.
• Expected Result: What kind of path were you expecting the PathfindingService to generate?
• Actual Result: That waypoints.Status is Enum.PathStatus.NoPath and waypoints:GetWaypoints() returns an empty table.

With this information, we can better understand the context and attempt to reproduce the issue on our end.

Thank you for your cooperation.