【性能调优】负载画像：地图热度的动态标注

-- 负载画像：热度采集
local player = class(actor)
local function calcHeat(mapId, online, msgRate, cpuPct)
    local norm = function(v, max) return math.min(1, v / max) end
    local score = norm(online, 500) * 0.4 + norm(msgRate, 200) * 0.3 + norm(cpuPct, 80) * 0.3
    local tag = "冷"
    if score > 0.8 then tag = "爆"
    elseif score > 0.6 then tag = "热"
    elseif score > 0.3 then tag = "温" end
    setsysvarex("Heat_" .. mapId, score, true)
    return score, tag
end

-- 负载画像：告警联动
local player = class(actor)
local hotStreak = {}
local function heatAlert(player, mapId, score)
    if score > 0.8 then
        hotStreak[mapId] = (hotStreak[mapId] or 0) + 1
        if hotStreak[mapId] >= 3 then
            sendcentermsg(player, 255, 0, mapId .. " 地图持续高负载，请关注！", 0, 8)
        end
    else
        hotStreak[mapId] = 0
    end
end