Building Scalable Game Systems

local Players = game:GetService("Players")
local RunService = game:GetService("RunService")

local RADIUS = 6
local SPEED = 2

local function updatePets(player, pets, time)
	local character = player.Character
	if not character then return end

	local root = character:FindFirstChild("HumanoidRootPart")
	if not root then return end

	for i, pet in ipairs(pets) do
		local angle = (i / #pets) * math.pi * 2 + time * SPEED

		local offset = Vector3.new(
			math.cos(angle) * RADIUS,
			1.5,
			math.sin(angle) * RADIUS
		)

		pet:PivotTo(root.CFrame * CFrame.new(offset))
	end
end

RunService.Heartbeat:Connect(function(dt)
	local time = tick()

	for _, player in ipairs(Players:GetPlayers()) do
		local pets = workspace.Pets:FindFirstChild(player.Name)
		if pets then
			updatePets(player, pets:GetChildren(), time)
		end
	end
end)