【引擎触发】藏宝图挖宝：坐标解密与挖宝触发的引擎实现

function QF.UseShovel(plr, treasureMap)
    local hint = TREASURE_MAPS[treasureMap.id]
    if plr.mapId ~= hint.mapId then
        return false, "宝藏不在这张地图"
    end
    local dist = plr:DistToXY(hint.x, hint.y)
    if dist > 5 then
        plr:SendMsg("铁锹似乎感应不到什么，再找找")
        return false
    end
    return QF.DigTreasure(plr, treasureMap)
end

function QF.DigTreasure(plr, treasureMap)
    plr:CostItem(treasureMap, 1)
    local roll = math.random(1, 10000)
    local reward
    if roll <= 50 then
        reward = { item = "麻痹戒指", n = 1 }
        QF_Broadcast(plr.name .. " 挖出了麻痹戒指！")
    elseif roll <= 500 then
        reward = { item = "祝福油", n = 2 }
    else
        reward = { item = "金创药", n = 5 }
    end
    QF_GiveItem(plr, reward.item, reward.n)
    return true
end