請問如何建造木城門

chriscca

(defrule
        (not(town-under-attack))
        (wall-completed-percentage 2 >= 40)
        (building-type-count-total gate < 2)
=>
        (build-wall 2 gate)
)

貌似只能建造石城門？

一窍不开

目测建造城门的语句应该是build-gate吧