Pathfinding npc jittery movement

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1

so i have a pathfinding npc, which has smooth movement, until it doesnt. ive noticed that once it either fails to calculate a path or get stuck against a wall the movement just becomes jittery

here’s the code:

local PathfindingService = game:GetService("PathfindingService")
local Players = game:GetService("Players")
local RunService = game:GetService("RunService")

local path = PathfindingService:CreatePath()

local character = script.Parent
local humanoid = character:WaitForChild("Humanoid")


local waypoints
local nextWaypointIndex
local reachedConnection
local blockedConnection

local function followPath()
	for i, v in pairs(script.Parent:GetChildren()) do
		if v:IsA("BasePart") then
			v:SetNetworkOwner(nil)
		end
	end
	
	-- Compute the path
	local success, errorMessage = pcall(function()
		path:ComputeAsync(character.PrimaryPart.Position, workspace:WaitForChild("Drixitty").HumanoidRootPart.Position)
	end)

	if success and path.Status == Enum.PathStatus.Success then
		-- Get the path waypoints
		waypoints = path:GetWaypoints()

		-- Detect if path becomes blocked
		blockedConnection = path.Blocked:Connect(function(blockedWaypointIndex)
			-- Check if the obstacle is further down the path
			if blockedWaypointIndex >= nextWaypointIndex then
				-- Stop detecting path blockage until path is re-computed
				blockedConnection:Disconnect()
				-- Call function to re-compute new path
				followPath()
			end
		end)

		-- Detect when movement to next waypoint is complete
		if not reachedConnection then
			reachedConnection = humanoid.MoveToFinished:Connect(function(reached)
				if reached and nextWaypointIndex < #waypoints then
					-- Increase waypoint index and move to next waypoint
					nextWaypointIndex += 1
					humanoid:MoveTo(waypoints[nextWaypointIndex].Position)
				else
					reachedConnection:Disconnect()
					blockedConnection:Disconnect()
				end
			end)
		end

		-- Initially move to second waypoint (first waypoint is path start; skip it)
		nextWaypointIndex = 2
		humanoid:MoveTo(waypoints[nextWaypointIndex].Position)
		humanoid.MoveToFinished:Wait()
	else
		warn("Path not computed!", errorMessage)
	end
end

while true do
	followPath()
	game:GetService("RunService").Heartbeat:Wait()
end
2

not issue of your code its roblox’s issue their pathfinding sucks

1 Like
3

The reason could be that the path for the next waypoint is still not generated and that is why it can stop for some time or jitter