兽潮围城：一波一波来，横扫一波一波清

for i = 1, wave + 2 do spawnWolf() end

 fx-waves

local BeastTide = {}
local WAVES, SWEEP_RANGE = 3, 150

local wave, wolves = 0, {}

local function spawnWave(n)
    wolves = {}
    for i = 1, n + 2 do
        wolves[#wolves + 1] = SL:SpawnWolf("small", 640 + i * 50)
    end
    SL:ShowTip("第" .. (n + 1) .. "波 " .. #wolves .. "头")
end

function BeastTide.Sweep()
    SL:RingWave("player", SWEEP_RANGE, "orange_ring")
    for _, w in ipairs(wolves) do
        if SL:Dist(w) < SWEEP_RANGE then
            SL:Damage(w, 12)
            SL:Stagger(w, 0.3)
        end
    end
end

local function onTick(dt)
    local alive = 0
    for _, w in ipairs(wolves) do
        if SL:IsAlive(w) then alive = alive + 1 end
    end
    if alive == 0 and wave < WAVES then
        wave = wave + 1
        spawnWave(wave)
    end
end

SL:On("monster_dead", function() end)
SL:RegTick("tide_tick", onTick)
SL:RegClick("sweep", BeastTide.Sweep)

return BeastTide