/**
 * Attack a provided list of cleave targets.
 *
 * @param attacker                  The attacking creature.
 * @param targets                   The targets to cleave.
 * @param attack_number             ?
 * @param effective_attack_number   ?
 */
void attack_cleave_targets(actor &attacker, list<actor*> &targets,
                           int attack_number, int effective_attack_number,
                           wu_jian_attack_type wu_jian_attack)
{
    if (wu_jian_attack == WU_JIAN_ATTACK_WHIRLWIND
        || wu_jian_attack == WU_JIAN_ATTACK_WALL_JUMP
        || wu_jian_attack == WU_JIAN_ATTACK_TRIGGERED_AUX)
    {
        return; // WJC AOE attacks don't cleave.
    }

    while (attacker.alive() && !targets.empty())
    {
        actor* def = targets.front();
        if (def && def->alive() && !_dont_harm(attacker, *def) && cleave_target_adjacent(attacker, *def))
        {
            melee_attack attck(&attacker, def, attack_number,
                               ++effective_attack_number, true);

            attck.wu_jian_attack = wu_jian_attack;
            attck.attack();
        }
        targets.pop_front();
    }
}

/**
 * Attack a provided list of cleave targets.
 *
 * @param attacker                 The attacking creature.
 * @param target                   The target to cleave.
 */
bool cleave_target_adjacent(actor &attacker, actor &target)
{
	coord_def apos = attacker.pos();
	coord_def tpos = target.pos();

	int dx = abs(apos.x - tpos.x);
	int dy = abs(apos.y - tpos.y);

	int sum = dx + dy;

	if(sum == 1 || sum == 2)
	{
		return true;
	}
	else
	{
		return false;
	}

	return true;
}