帮会点卯：集合点的每日出勤点名

local function muster(actor)
    local today = os.date("%Y%m%d")
    if getplayvar(actor, "musterDay") == today then
        sendmsg(actor, 1, "今日已点过卯")
        return
    end
    setplayvar(actor, "musterDay", today)
    local streak = (getplayvar(actor, "musterStreak")
        or 0) + 1
    setplayvar(actor, "musterStreak", streak)
    giveitem(actor, 9601, 1)
    sendmsg(actor, 1, "点卯成功，连出 " .. streak .. " 天")
end

local function musterBoard(guild)
    sendmsg(getplayerbyname(
        getsysvar("leader_" .. guild)), 1,
        "今日点卯 " .. (getsysvar(
            "musterN_" .. guild) or 0) .. " 人")
end