NPC Follow Error

Help and Feedback Scripting Support
#1

Hey! Tried to make an NPC follow me, and it works so far. However, after the NPC returns back to its default position, it doesn’t chase the player anymore. Perhaps I don’t set the target variable back to the player, here is my code. (All in a server script btw)

local c = script.Parent
local Humanoid = c.Humanoid
local Target = nil
local function check_range()
	while true do
		wait(1)
		if Target ~= nil then
			if (c.HumanoidRootPart.Position - game.Workspace.NPCSpawn.Position).Magnitude < 150 then
				Target = nil
				Humanoid:MoveTo(game.Workspace.NPCSpawn.Position)
			end
		end
	end
end
while true do
	wait(0.5)
	if Target ~= nil then
		print("found target")
		Humanoid:MoveTo(Target.HumanoidRootPart.Position)
		spawn(check_range)
	end
	if Target == nil then
		for i, v in pairs(game.Workspace:GetChildren()) do
			if v:IsA("Model") and v:FindFirstChild("HumanoidRootPart") and v ~= c then
				if (c.HumanoidRootPart.Position - v.HumanoidRootPart.Position).Magnitude < 50 then
					if (c.HumanoidRootPart.Position - v.HumanoidRootPart.Position):Dot( c.HumanoidRootPart.CFrame.lookVector ) < 0 then
						print("NPC is now targetting ".. v.Name)
						Target = v
					end
				end
			end
		end
	end
end

Please help!

#2

I expect that this is caused by the spawn(check_range) taking control of the NPC as you never end your while true do loop. Change the type of loop to one that uses a check on each iteration, then when the Humanoid reaches NPCSpawn.Position then break the loop.