【进阶实战】魔龙血域：血域范围持续掉血的进阶实现

local player = class(actor)
local POOL_RADIUS = 5
local POOL_LIFE = 10
local bloodPools = {}
local function spawnBloodPool(player, cx, cy)
    if #bloodPools >= 3 then
        table.remove(bloodPools, 1)
    end
    bloodPools[#bloodPools + 1] = {x = cx, y = cy, r = POOL_RADIUS, expire = os.time() + POOL_LIFE}
    sendcentermsg(player, 255, 0, "魔龙血域出现！远离红色地面！", 0, 5)
end
local function cleanPools()
    local now = os.time()
    for i = #bloodPools, 1, -1 do
        if bloodPools[i].expire < now then
            table.remove(bloodPools, i)
        end
    end
end

local player = class(actor)
local inPool = {}
local function checkPools(player, px, py)
    local now = os.time()
    for _, pool in ipairs(bloodPools) do
        if pool.expire >= now then
            local dist = math.abs(px - pool.x) + math.abs(py - pool.y)
            local inRange = dist <= pool.r
            if inRange and not inPool[player] then
                local dps = 200
                makeposion(player, 3, 5, dps, 0)
                inPool[player] = true
            elseif not inRange and inPool[player] then
                inPool[player] = nil
            end
        end
    end
end