NPCs never move along a path?

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#1

i’m trying to make a LocalScript that will allow tagged npcs to move along a path. yet when i call the function and try to make them chase the player, they don’t budge. why is that?

-- subspace tripmine artificial intelligence

local players = game:GetService("Players")
local pathfinding_service = game:GetService("PathfindingService")
local collection_service = game:GetService("CollectionService")
local run_service = game:GetService("RunService")

local client = players.LocalPlayer
local character = client.Character or client.CharacterAdded:Wait()
local humanoid = character:FindFirstChildOfClass("Humanoid")

local tag = "doofus"

local agent_parameters = {
	AgentRadius = 3,
	AgentHeight = 6,
	AgentCanClimb = true,
	Costs = {
		Climb = 2,
		Water = 20,
	}
}

function move_to(npc, target_pos)
	local path = pathfinding_service:CreatePath(agent_parameters)
	local humanoid = npc:FindFirstChildWhichIsA("Humanoid")

	local waypoints
	local next_waypoint_index
	local reached_connection
	local blocked_connection

	local function follow_path(destination)
		local success, failure = pcall(function()
			path:ComputeAsync(npc.PrimaryPart.Position, destination)
		end)

		if success and path.Status == Enum.PathStatus.Success then
			print(`path created`) -- prints, even though npcs aren't moving
			waypoints = path:GetWaypoints()

			blocked_connection = path.Blocked:Connect(function(blocked_waypoint_index)
				if blocked_waypoint_index >= next_waypoint_index then
					blocked_connection:Disconnect()
					follow_path(destination)
				end
			end)

			reached_connection = humanoid.MoveToFinished:Connect(function(reached)
				if reached and next_waypoint_index < #waypoints then
					next_waypoint_index += 1
					humanoid:MoveTo(waypoints[next_waypoint_index].Position)
				else
					reached_connection:Disconnect()
					blocked_connection:Disconnect()
				end
			end)

			next_waypoint_index = 2
			humanoid:MoveTo(waypoints[next_waypoint_index].Position)
		else
			warn(`path not created due to {failure}`)
		end
	end

	follow_path(target_pos)
end

local path_connection
path_connection = run_service.RenderStepped:Connect(function()
	local tripmines = collection_service:GetTagged(tag)

	for i, trip_mine in ipairs(tripmines) do
		local target_position = character.PrimaryPart.Position
		move_to(trip_mine, target_position)
	end
end)

players.PlayerRemoving:Connect(function(plr)
	if plr == client then
		if path_connection then
			path_connection:Disconnect()
		end
	end
end)
1 Like
#2

after a bit of tinkering, pathfinding appears to only work on the server (i could not get it to work on the client.)

1 Like
#3

You can try to move stuff away like try it on one Npc get that script you have on it find what may be wrong it like mix it around a bit and then it may fox your problem