【安全加密】交易行托底：异常低价的撤牌保护

local BASE = { ["屠龙刀"] = 800000, ["裁决之杖"] = 500000, ["祝福油"] = 20000 }
local function consign(actor, itemName, price)
    local base = BASE[itemName]
    if base == nil then
        sendmsg(actor, 0, "该物品暂不支持寄售")
        return
    end
    if price < base * 0.5 then
        setplayvar(actor, "HUMAN", "CONSIGN_LOCK", os.time(), 1)
        sendmsg(actor, 0, "价格低于基准五成，已进入 600 秒保护期，可免费撤牌")
    end
    local fee = math.floor(price * 0.02)
    local p = class(actor)
    if not checkitemw(actor, itemName, 1) then
        sendmsg(actor, 0, "背包里没有这件物品")
        return
    end
    takeitem(actor, itemName, 1)
    setsysvar("CONSIGN_" .. p:GetName() .. "_" .. itemName, price)
    sendmsg(actor, 0, "寄售成功，成交后收取 2% 手续费")
end

local function withdraw(actor, itemName)
    local p = class(actor)
    local lock = tonumber(getplayvar(actor, "HUMAN", "CONSIGN_LOCK") or "0")
    local inProtect = lock > 0 and os.time() - lock <= 600
    if inProtect then
        giveitem(actor, itemName, 1)
        setplayvar(actor, "HUMAN", "CONSIGN_LOCK", 0, 1)
        sendmsg(actor, 0, "保护期内撤牌，免手续费，物品已返还")
    else
        giveitem(actor, itemName, 1)
        sendmsg(actor, 0, "撤牌成功，收取 2% 手续费")
    end
end