帮会摇钱树：全员浇灌的成熟摇奖

local function waterTree(actor, guild)
    local today = os.date("%Y%m%d")
    if getplayvar(actor, "waterDay") == today then
        sendmsg(actor, 1, "今日已浇过")
        return
    end
    setplayvar(actor, "waterDay", today)
    setsysvarex("treeGrow_" .. guild,
        math.min(
            (getsysvar("treeGrow_" .. guild) or 0) + 2, 100))
    sendmsg(actor, 1, "成熟度 "
        .. getsysvar("treeGrow_" .. guild) .. "/100")
end

local function shakeTree(actor, guild)
    if (getsysvar("treeGrow_" .. guild) or 0) < 100 then
        sendmsg(actor, 1, "成熟度不足 100，还需浇水")
        return
    end
    setsysvarex("treeGrow_" .. guild, 0)
    giveitem(actor, 7501, 1)
    sendcentermsg(0, guild .. " 的摇钱树被摇响")
end