Checking if parts are behind another part

[Mastercoder2209 (Aurora)]

Hello, I am trying to have the player highlight when they see a part on their screen but it highlights them even if the part is behind a wall, so far I have tried using Camera:WorldToViewportPoint but it does not check if the part is behind another part.

local Players = game:GetService("Players")

local Camera = workspace.CurrentCamera
local PartChecking = workspace.Part
local IsHighlighted = false
local LocalPlayer = Players.LocalPlayer

while true do
	task.wait()
	local ScreenPosition, OnScreen = Camera:WorldToViewportPoint(PartChecking.Position)
	if OnScreen and not IsHighlighted then
		IsHighlighted = true
		Instance.new("Highlight").Parent = LocalPlayer.Character
	end
end

So does anyone know a way to detect if the part is behind another part?

[lamcellari (LamSouls)]

you could cast a raycast from the character to the part and check if there is something hitting between it

[SystemScripted]

Try using this code, let me know how it works out for you.

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

local targetPart = workspace:WaitForChild("TargetPart") -- The part you are checking
local originPart = camera -- Start the ray from the camera position


local function isPartBehindAnother(part)
	
	local partPosition = part.Position

	
	local rayOrigin = camera.CFrame.Position
	local direction = (partPosition - rayOrigin).Unit * 1000 -- To extend the ray forward
	local raycastParams = RaycastParams.new()
	raycastParams.FilterDescendantsInstances = {camera, player.Character} -- Ignore the camera and player


	local result = workspace:Raycast(rayOrigin, direction, raycastParams)

	-- If the ray hits an object, check if it's the target part
	if result then
		if result.Instance ~= part then
			return true -- It's behind another part
		end
	end

	return false -- Not behind anything
end

-- Continuously check if the part is behind another object
RunService.RenderStepped:Connect(function()
	if isPartBehindAnother(targetPart) then
		print(targetPart.Name .. " is behind another part!")
	else
		print(targetPart.Name .. " is visible!")
	end
end)

Instead of Highlighting, I used rays. If you like highlighting more just change the variables

[azavier123]

With viewport frame masking I’m sure you could achieve a very clean look. It would be a massive pain to properly implement this

[Mastercoder2209 (Aurora)]

This code was right what I needed thank you very much for helping me out.