local Player = game.Players.LocalPlayer or game.Players:GetPropertyChangedSignal("LocalPlayer"):Wait();
local Mouse = Player:GetMouse();
local runService = game:GetService("RunService");

local currentItems = {};

local function isInFrame(v)
	local X = Mouse.X;
	local Y = Mouse.Y;

	if X > v.AbsolutePosition.X and Y > v.AbsolutePosition.Y and X < v.AbsolutePosition.X + v.AbsoluteSize.X and Y < v.AbsolutePosition.Y + v.AbsoluteSize.Y then
		return true;
	else
		return false;
	end
end

local function mouseExited(obj)
	if not obj.MouseIsInFrame and obj.MouseWasIn then
		obj.MouseWasIn = false;
		obj.LeaveEvent:Fire();
	end
end

local function mouseEntered(obj)
	if not obj.uiObj.Visible then -- make sure the ui object isnt visible
		if obj.MouseIsInFrame and not obj.MouseWasIn then
			obj.MouseWasIn = true;
			obj.EnteredEvent:Fire();
		end
	end
end

runService.Heartbeat:Connect(function()
	for _,obj in pairs(currentItems) do
		obj.MouseIsInFrame = isInFrame(obj.uiObj);
		mouseExited(obj);
	end

	for _,obj in pairs(currentItems) do
		mouseEntered(obj);
	end
end)

local class = {}

function class.mouseClass(uiObj)
	if currentItems[uiObj] then
		return currentItems[uiObj].EnteredEvent.Event, currentItems[uiObj].LeaveEvent.Event;
	end

	local newObj = {};
	newObj.uiObj = uiObj;

	local EnterEvent = Instance.new("BindableEvent");
	local LeftEvent = Instance.new("BindableEvent");

	newObj.EnteredEvent = EnterEvent;
	newObj.LeaveEvent = LeftEvent;
	newObj.MouseWasIn = false;
	currentItems[uiObj] = newObj;

	uiObj.AncestryChanged:Connect(function() -- obj was destroyed
		if not uiObj.Parent then
			EnterEvent:Destroy();
			LeftEvent:Destroy();

			currentItems[uiObj] = nil;
		end
	end)

	return EnterEvent.Event, LeftEvent.Event;
end

return class;