math.randomseed(os.time())
local luck = {
    {name = "凶", txt = "しばらく気をつけて過ごして！", weight = 1},
    {name = "大吉", txt = "すごくいいことがあるかも！", weight = 2},
    {name = "中吉", txt = "いいことも悪いこともないかな", weight = 3},
    {name = "小吉", txt = "まぁまぁかも", weight = 5},
    {name = "吉", txt = "普通だね", weight = 10}
}
local function roll()
    local total_chance = 0
    for _, item in ipairs(luck) do
        total_chance = total_chance + item.weight
    end
    
    local chance = math.random(1, total_chance)

    for _, item in ipairs(luck) do
    if chance <= item.weight then
            return item.name .. " " .. item.txt
        end
        chance = chance - item.weight
    end
end
print("---おみくじ結果---")
print(roll())