帮会船坞：帮会船只的建造升级

local YARD_COST = {5000, 12000, 30000}
local function buildShip(actor, guild, shipId)
    local lv = getsysvar("shipLv_" .. shipId) or 0
    if lv >= 3 then
        sendmsg(actor, 1, "船体已满级")
        return
    end
    local cost = YARD_COST[lv + 1]
    local fund = getsysvar("gFund_" .. guild) or 0
    if fund < cost then
        sendmsg(actor, 1, "帮会基金不足 " .. cost)
        return
    end
    setsysvarex("gFund_" .. guild, fund - cost)
    setsysvarex("shipLv_" .. shipId, lv + 1)
    sendmsg(actor, 1, "船体升至 " .. (lv + 1) .. " 级")
end

local function shipInfo(actor, shipId)
    local lv = getsysvar("shipLv_" .. shipId) or 0
    sendmsg(actor, 1, "船体 " .. lv .. " 级，耐久 "
        .. 100 + lv * 100 .. "/400")
end