Simple Customizable Lightweight Crosshair [Open Source]

settings = {
    color = Color3.fromRGB(255, 255/2, 255),    -- The color of the crosshair, takes any Color3.
    thickness = 2,                              -- The thickness of the crosshair in pixel, takes any full number.
    length = 8,                                 -- The length of each side in pixel, takes any full number.
    opacity = 1,                                -- The opacity of the crosshair, takes any number, 1 is fully visible and 0 is invisible.
	x_offset = 0,                               -- The x offset of the crosshair, takes any positive or negative number.
	y_offset = 0,                               -- The y offset of the crosshair, takes any positive or negative number.
	
    recenter = true                             -- Automatically recenter the crosshair if your window was resized, this is an option in case it causes lag for anyone which I highly doubt, if it does for you, then please stop using your Microwave for Roblox.
}

local cam = workspace.CurrentCamera or workspace:FindFirstChildOfClass("Camera")

getgenv().crosshair_x = getgenv().crosshair_x or {}
getgenv().crosshair_y = getgenv().crosshair_y or {}

local function draw(a1, a2)
    local obj = Drawing.new(a1)
    for i, v in pairs(a2) do 
        obj[i] = v
    end
    return obj
end

if getgenv().crosshair_x ~= nil or getgenv().crosshair_x ~= {} then
    if getgenv().crosshair_x["Line"] then
        getgenv().crosshair_x["Line"]:Remove()
    end
    
    if getgenv().crosshair_x["Connection"] then
        getgenv().crosshair_x["Connection"]:Disconnect()
    end
    getgenv().crosshair_x = {}
end

if getgenv().crosshair_y ~= nil or getgenv().crosshair_y ~= {} then
    if getgenv().crosshair_y["Line"] then
        getgenv().crosshair_y["Line"]:Remove()
    end

    if getgenv().crosshair_y["Connection"] then
        getgenv().crosshair_y["Connection"]:Disconnect()
    end
    
    getgenv().crosshair_y = {}
end

getgenv().crosshair_x["Line"] = draw("Line", {
    To = Vector2.new(((cam.ViewportSize.x / 2) - settings.x_offset) - settings.length, (cam.ViewportSize.y / 2) - settings.y_offset),
    From = Vector2.new(((cam.ViewportSize.x / 2) - settings.x_offset) + settings.length, (cam.ViewportSize.y / 2) - settings.y_offset),
    Thickness = settings.thickness,
    Color = settings.color,
    Transparency = settings.opacity,
    Visible = true
})

getgenv().crosshair_y["Line"] = draw("Line", {
    To = Vector2.new((cam.ViewportSize.x / 2) - settings.x_offset, ((cam.ViewportSize.y / 2) - settings.y_offset) - settings.length),
    From = Vector2.new((cam.ViewportSize.x / 2) - settings.x_offset, ((cam.ViewportSize.y / 2) - settings.y_offset) + settings.length),
    Thickness = settings.thickness,
    Color = settings.color,
    Transparency = settings.opacity,
    Visible = true
})

if settings.recenter then
    getgenv().crosshair_x["Connection"] = cam:GetPropertyChangedSignal("ViewportSize"):Connect(function()
        getgenv().crosshair_x["Line"]["To"] = Vector2.new(((cam.ViewportSize.x / 2) - settings.x_offset) - settings.length, (cam.ViewportSize.y / 2) - settings.y_offset)
        getgenv().crosshair_x["Line"]["From"] = Vector2.new(((cam.ViewportSize.x / 2) - settings.x_offset) + settings.length, (cam.ViewportSize.y / 2) - settings.y_offset)
    end)

    getgenv().crosshair_y["Connection"] = cam:GetPropertyChangedSignal("ViewportSize"):Connect(function()
        getgenv().crosshair_y["Line"]["To"] = Vector2.new((cam.ViewportSize.x / 2) - settings.x_offset, ((cam.ViewportSize.y / 2) - settings.y_offset) - settings.length)
        getgenv().crosshair_y["Line"]["From"] = Vector2.new((cam.ViewportSize.x / 2) - settings.x_offset, ((cam.ViewportSize.y / 2) - settings.y_offset) + settings.length)
    end)
end