risk.rb

attacker = ARGV[0].to_i
defender = ARGV[1].to_i

def roll(k, n)
    (1..k).map{rand(6)}.sort.reverse.first(n)
end

while attacker > 0 && defender > 0
    sleep 1
    attacker_dice = [attacker, 3].min
    defender_dice = [defender, 2].min
    kills = [attacker_dice, defender_dice].min
    attack_rolls = roll(attacker_dice, kills)
    defend_rolls = roll(defender_dice, kills)
    attack_rolls.zip(defend_rolls).each do |a,d|
        if a > d
            defender -= 1
        else
            attacker -= 1
        end
    end
    puts [attacker, defender].join("\t")
end