local Players = game:GetService("Players")
local RunService = game:GetService("RunService")
local player = Players.LocalPlayer

local disabled = {}
local floorY = nil
local floor = Instance.new("Part")
floor.Size = Vector3.new(10, 1, 10)
floor.Anchored = true
floor.CanQuery = false
floor.CanTouch = false
floor.Transparency = 1
floor.Parent = workspace.CurrentCamera

local params = RaycastParams.new()
params.RespectCanCollide = true

local function check(part)
	if not part:IsA("BasePart") or not floorY then
		return
	end
	local cf, size = part.CFrame, part.Size
	local halfHeight = math.abs(cf.RightVector.Y) * size.X / 2
		+ math.abs(cf.UpVector.Y) * size.Y / 2
		+ math.abs(cf.LookVector.Y) * size.Z / 2
	if cf.Position.Y + halfHeight > floorY + 1.5 then
		if part.CanCollide then
			disabled[part] = true
			part.CanCollide = false
		end
	elseif disabled[part] then
		disabled[part] = nil
		part.CanCollide = true
	end
end

local function scan()
	for _, name in ipairs({ "ActiveMaps", "Lobby" }) do
		local root = workspace:FindFirstChild(name)
		if root then
			for _, part in ipairs(root:GetDescendants()) do
				check(part)
			end
		end
	end
end

local elapsed = 3
RunService.Heartbeat:Connect(function(dt)
	local char = player.Character
	local root = char and char:FindFirstChild("HumanoidRootPart")
	local humanoid = char and char:FindFirstChildOfClass("Humanoid")
	if not (root and humanoid) then
		return
	end
	local height = humanoid.HipHeight + root.Size.Y / 2
	params.FilterDescendantsInstances = { char, workspace.CurrentCamera }
	local hit = workspace:Raycast(root.Position, Vector3.new(0, -(height + 30), 0), params)
	floorY = hit and hit.Position.Y or floorY or root.Position.Y - height
	floor.CFrame = CFrame.new(root.Position.X, floorY - 0.5, root.Position.Z)
	elapsed = elapsed + dt
	if elapsed >= 3 then
		elapsed = 0
		scan()
	end
end)