Pathfinding NPC for Tutorial

local get_path = require( game.ServerScriptService:WaitForChild("A*") )

local fig = script.Parent
local torso = fig.WaitForChild("HumanoidRootPart")
local humanoid = fig.WaitForChild("Humanoid")

function follow_path(goal)
    if not goal then return end

    local from = torso.Position
    local to = goal.Position
    local path = get_path(from, to)

    for _,node in ipairs(path or {})do
        repeat wait()
            humanoid:MoveTo(node)
        until (node - torso.Position).Magnitude <= 4
    end
end


function get_closest_player(to)
    local dist = math.huge
    local output = nil
    for _,user in ipairs(game.Players:GetPlayers())do
        local diff = user:DistanceFromCharacter(to)
        if diff < dist and user.Character then
            dist = diff
            output = user.Character
        end
    end
    return output
end

while wait() do
    local user = get_closest_player(torso.Position)
    local root = user and user:FindFirstChild("HumanoidRootPart")
    follow_path(root)
end