local UserInputService = game:GetService('UserInputService')
local RunService = game:GetService('RunService')
local Players = game:GetService('Players')

local Circle = Drawing.new('Circle')
Circle.Thickness = 1
Circle.Position = UserInputService:GetMouseLocation()
Circle.Visible = true
Circle.Filled = false
Circle.Radius = 200
Circle.Color = Color3.fromRGB(255, 255, 255)

local Line = Drawing.new('Line')
Line.Thickness = 1
Line.Visible = false
Line.Color = Color3.fromRGB(255, 255, 255)
Line.From = UserInputService:GetMouseLocation()

function GetClosestTarget()
	local Target, Distance = nil, math.huge
	--
	for Index, Value in next, Players:GetPlayers() do
		if Value == Players.LocalPlayer or Value.Team == Players.LocalPlayer.Team or Value.Team == 'Spectator' then continue end
		if not Players.LocalPlayer.Character or not Players.LocalPlayer.Character:FindFirstChild('Head') then continue end
		--
		local Character = Value.Character
		if not Character then continue end
		--
		local Humanoid = Character:FindFirstChildOfClass('Humanoid')
		if not Humanoid or Humanoid.Health <= 0 then continue end
		--
		local ScreenPosition, OnScreen = workspace.CurrentCamera:WorldToViewportPoint(Character:FindFirstChild('Head').Position)
		if not OnScreen or (Vector2.new(ScreenPosition.X, ScreenPosition.Y) - UserInputService:GetMouseLocation()).Magnitude > 200 then continue end
		--
		local ObscuringTarget = #workspace.CurrentCamera:GetPartsObscuringTarget({workspace.CurrentCamera.CFrame.Position, Character:FindFirstChild('Head').Position}, {Players.LocalPlayer.Character, Character})	
		--if ObscuringTarget > 0 then continue end
		--
		if (Character:FindFirstChild('Head').Position - Players.LocalPlayer.Character:FindFirstChild('Head').Position).Magnitude < Distance then
			Target = Character:FindFirstChild('Head')
			Distance = (Character:FindFirstChild('Head').Position - Players.LocalPlayer.Character:FindFirstChild('Head').Position).Magnitude
		end
	end
	--
	return Target
end

for Index, Value in next, getgc(true) do
	if typeof(Value) == 'function' and not isexecutorclosure(Value) and not iscclosure(Value) and islclosure(Value) and debug.getinfo(Value).name ~= nil then
		if debug.getinfo(Value).name == 'BulletRayCast' then
			local Hook; Hook = hookfunction(Value, newcclosure(function(...)
				local Args = {...}
				--
				local Target = GetClosestTarget()
				if Target then
					Args[2] = (Target.Position - Args[1]).Unit
				end
				--
				return Hook(table.unpack(Args))
			end))
		end
	end
end

RunService.Heartbeat:Connect(function()
	Circle.Position = UserInputService:GetMouseLocation()
	Line.From = UserInputService:GetMouseLocation()
	--
	local Target = GetClosestTarget()
	if Target then
		local ScreenPosition, OnScreen = workspace.CurrentCamera:WorldToViewportPoint(Target.Position)
		if not OnScreen then return end
		--
		Line.Visible = true
		Line.To = Vector2.new(ScreenPosition.X, ScreenPosition.Y)
	else
		Line.Visible = false
	end
end)