【引擎触发】沙巴克密道：攻城期间的密道开启触发设计

-- 沙巴克密道：随机开启
local player = class(actor)
local ENTRANCES = {{55, 210}, {70, 195}, {48, 225}, {62, 240}}
local function openSecretGate(actor)
    local player = class(actor)
    if getsysvar("SiegeOpen") ~= 1 then
        sendmsg(player, 1, 0, "密道只在攻城期间开启。")
        return
    end
    local pick = ENTRANCES[math.random(1, #ENTRANCES)]
    setsysvarex("SecretX", pick[1], true)
    setsysvarex("SecretY", pick[2], true)
    setsysvarex("SecretOpenTs", os.time(), true)
    local hint = pick[1] < 60 and "西侧" or "东侧"
    sendcentermsg(player, 255, 0, "城内" .. hint .. "似有暗流涌动，密道现世 20 分钟！", 0, 10)
end

-- 沙巴克密道：通行与塌陷
local player = class(actor)
local function tryEnterSecret(player, px, py)
    if getsysvar("GateOpen") ~= 1 then return end
    local sx = tonumber(getsysvar("SecretX") or -1)
    local sy = tonumber(getsysvar("SecretY") or -1)
    if px == sx and py == sy then
        local elapsed = os.time() - tonumber(getsysvar("SecretOpenTs") or 0)
        if elapsed > 1200 then
            sendmsg(player, 1, 0, "密道已经塌陷，无法通行。")
            return
        end
        beginteleport(player, 88, 66)
        sendmsg(player, 1, 0, "穿过密道，已悄无声息进入城内。")
    end
end