Weighted RNG System

[brittle crypt]

I could only skid it and ask chatgpt ad it gave me this:

local shapes = {
    {Name = "block", Chance = 1/2},
    {Name = "cube", Chance = 1/3},
    {Name = "2d square", Chance = 1/6},
}

function rollShape()
    local roll = math.random()
    local cumulative = 0

    for _, shape in ipairs(shapes) do
        cumulative = cumulative + shape.Chance
        if roll <= cumulative then
            return shape.Name
        end
    end

    -- fallback, shouldn't happen unless the chances don't add up to 1
    return "???"
end

i sent this into #📜︱scripting and asked for advice and they said 2 things:

make it yourself not ai

and

use weighted system

whats a weight system and how to make