How To Detect If a Part Is Within Another Part?

I'm using a player's HumanoidRootPart to see if they are within a given 'zone' to play a certain sound based on whether they are within that zone, or outside of it.

The 'zone' is just an invisible Part that has CanCollide set to false.

I have this script setup that somewhat works:

local Player = game:GetService("Players").LocalPlayer
local HumanoidRootPart
local Humanoid

function Check()
	
	local Result = HumanoidRootPart.Touched:Wait()
	if Result.Name == "IndoorArea" then
		
		return true
		
	else
		
		return false
		
	end
	
end

Player.CharacterAdded:Connect(function(Character)
	
	HumanoidRootPart = Character:WaitForChild("HumanoidRootPart")
	Humanoid = Character:WaitForChild("Humanoid")
	while Humanoid.Health > 0 and Humanoid.Health ~= 0 do
		
		if Check() == true then
			
			print("In zone")
			
		else
			
			print("Outside zone")
			
		end
		wait()
		
	end
	
end)

(This script is located within StarterPlayerScripts, and is a local script)

This script works, but it sometimes detects that the player is outside the zone even when they are inside the zone and vice versa.

If anyone know how I can fix this script or a different method that is more viable than this one, help is much appreciated.

Thanks!

You could do this with a boolean variable.

local function onPartTouched(touched)
	local player = game:GetService("Players"):GetPlayerFromCharacter(touched.Parent)
	if player and touched.Name == "HumanoidRootPart" then
		--code
	end
end

local function onPartTouchEnded(touched)
	local player = game:GetService("Players"):GetPlayerFromCharacter(touched.Parent)
	if player and touched.Name == "HumanoidRootPart" then
		--code
	end
end

part.TouchEnded:Connect(onPartTouchEnded)
part.Touched:Connect(onPartTouched)

local distance = 50

while wait(0.01) do
if (game.Workspace.Part.Position - game.Players.LocalPlayer.Character.HumanoidRootPart.Position).Magnitude > 50 then
Sound:Play()
else
Sound:Stop()
	end
end