-- A small Hero class (provided).
local Hero = {}
Hero.__index = Hero
function Hero.new(name, hp)
    return setmetatable({ name = name, hp = hp, max_hp = hp }, Hero)
end

local party = {
    Hero.new("Ada", 100),
    Hero.new("Ben", 80),
    Hero.new("Cara", 120),
}
for _, h in ipairs(party) do
    print(h.name .. ": " .. h.hp .. " HP")
end