野外首领：定时刷新与归属判定

local SPAWN_GAP = 4 * 3600
local function checkSpawn(map)
    local last = tonumber(getsysvar("boss_" .. map) or "0")
    local now = os.time()
    if now - last < SPAWN_GAP then return end
    setsysvarex("boss_" .. map, now)
    spawnmonster(map, 55, 120, 130)
    sendcentermsg(0, map .. " 的野外首领已现身")
end

local bossDamage = {}
local function onBossHurt(attacker, dmg)
    local team = getplayvar(attacker, "TEAM") or "solo"
    bossDamage[team] = (bossDamage[team] or 0) + dmg
end
local function settleOwner(boss)
    local best, bestDmg = nil, 0
    for team, dmg in pairs(bossDamage) do
        if dmg > bestDmg then best, bestDmg = team, dmg end
    end
    setsysvarex("bossOwner_" .. boss, best or "none")
    bossDamage = {}
    return best
end