【进阶实战】竞技场挑战券的核销：每日限量统一扣票

local DAILY_LIMIT = 5
local function todayKey()
    return os.date("%Y%m%d")
end
local function consumeTicket(actor)
    actor = getplayerbyname(actor)
    local key = getplayvar(actor, "HUMAN", "ArenaTicketDay")
    if key ~= todayKey() then
        setplayvar(actor, "HUMAN", "ArenaTicketDay", todayKey(), 1)
        setplayvar(actor, "HUMAN", "ArenaTicketUsed", 0, 1)
    end
    local used = tonumber(getplayvar(actor, "HUMAN", "ArenaTicketUsed")) or 0
    if used >= DAILY_LIMIT then
        sendmsg(actor, 1, "今日 5 张挑战券已用完，明日再战。")
        return false
    end
    if not takeitem(actor, "竞技场挑战券", 1, 0, "竞技场核销") then
        sendmsg(actor, 1, "背包中没有竞技场挑战券。")
        return false
    end
    setplayvar(actor, "HUMAN", "ArenaTicketUsed", used + 1, 1)
    sendmsg(actor, 1, "核销成功，今日已用 " .. (used + 1) .. "/" .. DAILY_LIMIT .. " 张。")
    return true
end

local function enterLadder(actor)
    actor = getplayerbyname(actor)
    if not consumeTicket(actor) then
        return
    end
    sendmsg(actor, 1, "天梯挑战开始，对手为同段位玩家。")
end