function do_battle (player1, player2) {
  var attack_order = get_attack_order(player1, player2);
  var turn = 0;
  while ((player1.hp > 0) && (player2.hp > 0)) {
    turn++;
    document.write("turn " + turn + " begins!<br>");
    for (attacker in attack_order) {
      if (1 == attacker) {
        resolve_attack(player1, player2);
        if (player2.hp < 1)
          break;
      } else {
        resolve_attack(player2, player1);
        if (player1.hp < 1)
          break;
      }
    }
  }
  hold_funeral(player1.hp < 1 ? player1 : player2);
  celebrate_victory(player1.hp < 1 ? player2 : player1);
}