Handling the humma's spring charge

Rules say: A humma can spring up to 25 meters horizontally from a standing start and, if he lands within 2 meters of an opponent, come to a dead stop and make a melee attack against the opponent, who cannot strike back.<br /><br />Issue is, no matter what system you use, side A/ side B of the AD rules or a simplied D&amp;D style combat round how is it that an opponent doesn't get an attack?<br /><br />With side A then Side B there would be clear opportunity for an attack<br /><br /><br />