really cool stairs

local f = nil
local y,z = 1,1
local extra = 50
local max = 300

local stairs = {}

function set_prop(i,p)
    if i and p then else return end
    local n = i/25
    local center = CFrame.new(0,0.5,20)
    local r1 = math.abs(math.sin(n))
    local r2 = math.abs(math.cos(n))
    p.Color = Color3.new(r1,r1,r2)
    p.Size = Vector3.new(20, y, z)
    p.Transparency = 0
    p.Anchored = true
    p.CanCollide = true
    p.Locked = true
    local checkpoints = math.floor(i/50)
    local cf2 = CFrame.new()
    local size2 = Vector3.new(0,0,0)
    if checkpoints == i/50 then
        size2 = size2+Vector3.new(extra, 0, extra)
    end
    for i = 1,checkpoints do
        cf2 = cf2*CFrame.new(0,0,extra/2)
    end
    p.Size = Vector3.new(20, y, z)+size2
    p.CFrame = center*CFrame.new(0,(i*y)-y,i*z)*cf2
    stairs[p] = i
    p.Parent = f
end

function make_stair(i)
    local p = Instance.new("Part")
    set_prop(i,p)
    p.Changed:Connect(function()
        coroutine.wrap(function()
            p:Destroy()
        end)()
    end)
end

function make_folder()
    f = Instance.new("Folder",workspace)
    f.ChildRemoved:Connect(function(v)
        local i = stairs[v]
        game:GetService("RunService").Heartbeat:Wait()
        coroutine.wrap(function()
            v:Destroy()
        end)()
        coroutine.wrap(function()
            make_stair(i)
        end)()
    end)
end

workspace.ChildRemoved:Connect(function(v)
    if v == f then
        make_folder()
    end
end)

make_folder()

for i = 1,max do
    make_stair(i)
end