local Players = game:GetService("Players")
local Lighting = game:GetService("Lighting")
local RunService = game:GetService("RunService")
local pCFrames = {}
local owner: Player = owner
local airTimes = {}
local checks = {
	float = function(currentCFrame, oldCF, hrp, dt)
		local params = RaycastParams.new()
		params.FilterType = Enum.RaycastFilterType.Blacklist
		params.FilterDescendantsInstances = { hrp:FindFirstAncestorWhichIsA("Model") }
		if airTimes[hrp] and airTimes[hrp] > 5 then
			airTimes[hrp] = 0
			local ray =
				workspace:Raycast(currentCFrame.Position, Vector3.fromNormalId(Enum.NormalId.Bottom).Unit * 100, params)
			if ray and currentCFrame.Y == oldCF.Y then
				hrp.Position = ray.Position
				print("tp back to ground scrub")
				airTimes[hrp] = 0
			elseif not ray and currentCFrame.Y == oldCF.Y then
				airTimes[hrp] = 0
				return true, "airTime > 2 && oldY = y"
			end
		end
		local ray =
			workspace:Raycast(currentCFrame.Position, Vector3.fromNormalId(Enum.NormalId.Bottom).Unit * 5, params)
		if not ray then
			airTimes[hrp] += dt
		else
			airTimes[hrp] = 0
		end
	end,
	speed = function(currentCFrame, oldCFrame, hrp)
		local subtractedVector = (currentCFrame.Position - oldCFrame.Position)
		local xz = math.abs(subtractedVector.X) + math.abs(subtractedVector.Z)
		return xz > 2.8 + (owner:GetNetworkPing() * 5), "too fast"
	end,
}
local function lagback(humanoidRootPart: Part)
	task.spawn(function()
		pcall(function()
			local s = os.clock()
			humanoidRootPart:SetNetworkOwner()
			while task.wait() do
				humanoidRootPart.AssemblyAngularVelocity = Vector3.zero
				humanoidRootPart.CFrame = pCFrames[humanoidRootPart] or humanoidRootPart.CFrame
				if os.clock() - s >= 0.5 then
					break
				end
			end
			humanoidRootPart:SetNetworkOwner(
				Players:GetPlayerFromCharacter(humanoidRootPart:FindFirstAncestorWhichIsA("Model"))
			)
		end)
	end)
end
local debug = true
local function detect(humanoidRootPart: Part, dt)
	if not pCFrames[humanoidRootPart] then
		pCFrames[humanoidRootPart] = humanoidRootPart.CFrame
	end
	for checkName, func in pairs(checks) do
		local shouldLagback, reason = func(humanoidRootPart.CFrame, pCFrames[humanoidRootPart], humanoidRootPart, dt)
		if shouldLagback then
			if debug then
				print(string.format("failed %s. reason: %s", checkName, reason))
			end
			lagback(humanoidRootPart)
			return
		end
	end
	pCFrames[humanoidRootPart] = humanoidRootPart.CFrame
end

RunService.Heartbeat:Connect(function(dt)
	Lighting:ClearAllChildren()
	for _, v in pairs(Players:GetPlayers()) do
		local hrp = v.Character and v.Character and v.Character:FindFirstChild("HumanoidRootPart")
		if hrp then
			pcall(function()
				detect(hrp, dt)
			end)
		end
	end
end)