def equip(equip_type, id)
case equip_type
when 0 # 武器
if id == 0 or $game_party.weapon_number(id) > 0
$game_party.gain_weapon(@weapon_id, 1)
@weapon_id = id
$game_party.lose_weapon(id, 1)
end
改成
def equip(equip_type, id)
case equip_type
when 0 # 武器id == 0 or
if $game_party.weapon_number(id) > 0
$game_party.gain_weapon(@weapon_id, 1)
@weapon_id = id
$game_party.lose_weapon(id, 1)
end