(spawn_missile, <agent_no>, <position>, <speed_fixed_point>, <weapon_item_no>, <missile_item_no>, [<weapon_item_modifier>], [<missile_item_modifier>])
(add_missile, <agent_id>, <starting_position>, <starting_speed_fixed_point>, <weapon_item_id>, <weapon_item_modifier>, <missile_item_id>, <missile_item_modifier>)