Zone System.

function ZoneService:_scanZone(zone: any, scanToken: number): (number, number)
	local seenPlayers = self.SeenByZone[zone]

	if seenPlayers == nil then
		seenPlayers = {}
		self.SeenByZone[zone] = seenPlayers
	end

	if not zone:IsEnabled() then
		self:_exitAllPlayers(zone)
		table.clear(seenPlayers)
		return 0, 0
	end

	local playerChecks = 0
	local containsHits = 0

	for _, record in self.PlayerRecordsArray do
		playerChecks += 1

		if self:_refreshPlayerRecord(record) and zone:ContainsPosition(record.Position) then
			containsHits += 1
			seenPlayers[record.Player] = scanToken
			self:_enterZone(record.Player, zone)
		end
	end

	self:_exitUnseenPlayers(zone, seenPlayers, scanToken)
	return playerChecks, containsHits
end

function ZoneClass:ContainsPosition(position: Vector3): boolean
	local padding = self.Padding

	for _, part in self.Parts do
		if not part:IsDescendantOf(Workspace) then
			continue
		end

		local localPosition = part.CFrame:PointToObjectSpace(position)
		local size = part.Size

		if abs(localPosition.X) <= size.X * 0.5 + padding
			and abs(localPosition.Y) <= size.Y * 0.5 + padding
			and abs(localPosition.Z) <= size.Z * 0.5 + padding
		then
			return true
		end
	end

	return false
end