【引擎触发】沙城密道：密道开启与守卫刷新的触发设计

function killmon(actor, monName)
    if monName ~= "沙巴克禁卫" then return end
    if getsysvar("SIEGE_ON") ~= "1" then return end
    local got = tonumber(getplayvar(actor, "HUMAN", "SECRET_PLATE") or "0")
    if got >= 2 then return end
    if math.random(1, 100) <= 25 then
        giveitem(actor, "密道石板", 1)
        setplayvar(actor, "HUMAN", "SECRET_PLATE", got + 1, 1)
        sendmsg(actor, 0, "拾获密道石板，集齐两块可开启密道")
    end
end

function openSecret(actor)
    if getsysvar("SIEGE_ON") ~= "1" then
        sendmsg(actor, 0, "非攻城期间，密道无法开启")
        return
    end
    if not checkitemw(actor, "密道石板", 2) then
        sendmsg(actor, 0, "需要两块密道石板")
        return
    end
    takeitem(actor, "密道石板", 2)
    beginteleport(actor, 45, 77)
    genmon("密道守卫", 2)
    setsysvar("SECRET_OPEN", 1)
    setontimerex(171, 300)
    sendcentermsg("沙巴克密道已开启，300 秒后关闭")
end
function ontimer171()
    setsysvar("SECRET_OPEN", 0)
end