帮会渔场：渔获上交的双向累计

; fishery.txt 渔场上交票额
鲫鱼=1票   鲤鱼=2票
鲈鱼=3票   桂鱼=5票
周贡献榜=前10发渔令牌

local FISH_TICKET = {
    jinyu = 1, liyu = 2, luyu = 3, guiyu = 5}
local function donateFish(actor, guild, fish, n)
    local t = FISH_TICKET[fish]
    if t == nil then
        sendmsg(actor, 1, "无此渔获")
        return
    end
    setplayvar(actor, "fishTicket",
        (getplayvar(actor, "fishTicket") or 0) + t * n)
    setsysvarex("fishGong_" .. guild,
        (getsysvar("fishGong_" .. guild) or 0) + t * n)
    sendmsg(actor, 1, "渔票 +" .. t * n)
end