Advanced part detecting system

Okay so this is a script that detects the closest part to the player but a little differently.

It only detects the parts in front of the player and from a specific range. I want make it so parts can’t be detected under the player’s character.

local RunService = game:GetService("RunService")

local player = game.Players.LocalPlayer
local character = player.Character or player.CharacterAdded:Wait()
local humanoidRootPart = character:WaitForChild("HumanoidRootPart")

local closestPart

local currentValue = 1

for i, v in pairs(workspace.Connections:GetChildren()) do -- This is just giving the parts unique names
	
	if v:IsA("BasePart") then
		
		v.Name = "Connection"..currentValue
		currentValue = currentValue + 1
	end
end

local function insert(tbl, ...)
	for _, value in ipairs({ ... }) do
		table.insert(tbl, value)
	end
end

RunService.RenderStepped:Connect(function()
	
	wait(0.01)
	
	local inRange = {}
	
	for i, child in ipairs(workspace.Connections:GetChildren()) do
		
		local range = (child.Position - humanoidRootPart.Position).Magnitude
		
		local characterToPart = (child.Position - humanoidRootPart.Position).Unit
		local playerLook = humanoidRootPart.CFrame.LookVector

		local dotProduct = characterToPart:Dot(playerLook) 
		
		if dotProduct < 0.7 or range > 700 then
			
			child.BrickColor = BrickColor.new("Really red") -- Not In FOV
			closestPart = nil
			
		else
			
			if range <= 700 then
				
				child.BrickColor = BrickColor.new("Dark blue") -- In FOV

				local magnitude = (child.Position - humanoidRootPart.Position).Magnitude 
				insert(inRange, {Magnitude=magnitude,Name=child.Name})
			end
		end
	end

	if (next(inRange) ~= nil) then
		table.sort(inRange, function(a,b)
			if a.Magnitude < b.Magnitude then
				return true
			else
				return false
			end
		end)

		closestPart = workspace.Connections:FindFirstChild(inRange[1].Name)
		closestPart.BrickColor = BrickColor.new("Dark green")
	end
end)

Ok, very late, but, just make a folder with all the buildings to swing from for your spiderman script, and make it so that it only detects parts in that folder