class ITEM
{
    public string name;
    public int roll_chance;
    public ITEM() {}
    public ITEM(ITEM other)
    {
        this.name = other.name;
        this.roll_chance = other.roll_chance;
    }
}

ITEM[] potion_data_list =
{
    potion_data("confusion",         8,  50),
    potion_data("paralysis",        10,  50),
    potion_data("poison",            8,  50),
    potion_data("gain strength",    15, 150),
    potion_data("see invisible",     2, 170),
    potion_data("healing",          15,  30),
    potion_data("monster detection", 6, 120),
    potion_data("magic detection",   6, 105),
    potion_data("raise level",       2, 220),
    potion_data("extra healing",     5, 180),
    potion_data("haste self",        4, 200),
    potion_data("restore strength", 14, 120),
    potion_data("blindness",         4,  50),
    potion_data("thirst quenching",  1,  50),
    // roll_chances must add up to 100
};

// used to make entries in potion_data_list
ITEM potion_data(string name, int roll_chance, int worth)
{
    ITEM potion = new ITEM();
    potion.name = name;
    potion.roll_chance = roll_chance;
    return potion;
}

ITEM[] scroll_data_list =
{
    scroll_data("monster confusion", 8, 170),
    scroll_data("magic mapping", 5, 180),
    scroll_data("light", 10, 100),
    scroll_data("hold monster", 2, 200),
    scroll_data("sleep", 5, 50),
    scroll_data("enchant armor", 8, 130),
    scroll_data("identify", 21, 100),
    scroll_data("scare monster", 4, 180),
    scroll_data("gold detection", 4, 110),
    scroll_data("teleportation", 7, 175),
    scroll_data("enchant weapon", 10, 150),
    scroll_data("create monster", 5, 75),
    scroll_data("remove curse", 8, 105),
    scroll_data("aggravate monsters", 1, 60),
    scroll_data("blank paper", 1, 50),
    scroll_data("genocide", 1, 200),
};

ITEM scroll_data(string name, int roll_chance, int worth)
{
    ITEM scroll = new ITEM();
    scroll.name = name;
    scroll.roll_chance = roll_chance;
    return scroll;
}

ITEM roll_item_data_list(ITEM[] item_data_list)
{
    int num_to_beat = 0;
    int roll = random(100);
    for (int i = 0; i < item_data_list.Length; i++)
    {
        num_to_beat += item_data_list[i].roll_chance;
        if (roll < num_to_beat)
        return new ITEM(item_data_list[i]);
    }
}

// in place_items() in new_level() ...

// rolling new potion
ITEM item = roll_item_data_list(potion_data_list);