【进阶实战】Lua连续签到：沙巴克组队签到的断签归零

local function sign(actor)
    local n = getplayvar(actor, "SIGN_N") or 0
    setplayvar(actor, "SIGN_N", n + 1)   -- 只加不断，可刷连签
end

local function dayNo()
    return math.floor(os.time() / 86400)   -- 绝对天数序号
end
local function sign(actor)
    local t = dayNo()
    local last = tonumber(getplayvar(actor, "SIGN_T")) or 0
    local n = tonumber(getplayvar(actor, "SIGN_N")) or 0
    if t == last then return end         -- 今日已签防重复
    if t - last == 1 then n = n + 1      -- 昨日签过，链续
    else n = 1 end                       -- 断签归一
    setplayvar(actor, "SIGN_N", n)
    setplayvar(actor, "SIGN_T", t)
    sendmsg(actor, 1, "沙巴克组队连签 " .. n .. " 天")
end