帮会更夫：夜间报时的巡更奖励

local WATCHES = {"子", "丑", "寅", "卯", "辰", "巳",
    "午", "未", "申", "酉", "戌", "亥"}
local function watchCall(actor)
    local slot = math.floor(os.date("%H") / 2) + 1
    if getplayvar(actor, "lastWatch") == slot then
        return
    end
    setplayvar(actor, "lastWatch", slot)
    sendmsg(actor, 1, "更夫报时："
        .. WATCHES[slot] .. "时已到")
end

local function patrolReward(actor)
    local n = (getplayvar(actor, "patrolN") or 0) + 1
    setplayvar(actor, "patrolN", n)
    if n >= 7 then
        setplayvar(actor, "patrolN", 0)
        giveitem(actor, 8501, 1)
        sendmsg(actor, 1, "巡更一圈，更牌 1 枚")
    else
        sendmsg(actor, 1, "巡更进度 " .. n .. "/7")
    end
end