buttons = {"A","B","C","D"}
locks = {"Lock1","Lock2"}
parent = game.Workspace
order = 0

function Unlock()
	print("U")
	local bf = Instance.new("BodyForce")
	for i = 1,#locks do
		local lock = parent:FindFirstChild(locks[i])
		if lock ~= nil then
			coroutine.resume(coroutine.create(function()
				bf:Clone().Parent = lock
				lock.BodyForce.force = Vector3.new(-1e+006,1,0)
				wait(10)
				lock.BodyForce.force = Vector3.new(1e+006,1,0)
				wait(10)
				lock.BodyForce:Remove()
			end))
		end
	end
	wait(20)
	for i = 1,#buttons do
		buttons[i].Stepped.Value = false
	end
	order = 0
end

e = true
function onTouched(hit,num)
	if not e then return end
	e = false
	print(num)
	local h = hit.Parent:FindFirstChild("Humanoid")
	if h ~= nil then
		local button = buttons[num]
		if not button.Stepped.Value then
			if order == num-1 then
				button.Stepped.Value = true
				order = num
			else
				local m = Instance.new("Message")
				m.Text = "You tripped and fell!"
				m.Parent = game.Players:GetPlayerFromCharacter(h.Parent)
				h.Health = 0
				wait(5)
				m:Remove()
			end
			if order == 4 then
				Unlock()
			end
		end
		wait(2)
	end
	e = true
end

for i = 1,#buttons do
	local button = parent:FindFirstChild(buttons[i])
	if button ~= nil then
		buttons[i] = button
		local bool = Instance.new("BoolValue")
		bool.Name = "Stepped"
		bool.Value = false
		bool.Parent = button
		button.Touched:connect(function(hit) onTouched(hit,i) end)
	end
end