金环守势：先挨一下再连本带利

fx-shieldburst

local GuardBurst = {}
local CONST = { MSG_ID = 12060, KEY = "GuardBurst", GUARD = 0.55, GAP = 0.2, RADIUS = 160 }

function GuardBurst.Cast(myID)
    local myX = SL:GetValue("ACTOR_POSITION_X", myID)
    local myY = SL:GetValue("ACTOR_POSITION_Y", myID)

    -- 第一拍: 格挡金环
    GuardBurst._guard = CreateGuardRing(myX, myY)
    GuardBurst._guard:Breath(CONST.GUARD)

    -- 顿挫 + 第二拍: 反击波
    SL:ScheduleOnce(function()
        GuardBurst._guard:Remove()
        GuardBurst._burst = CreateBurstRing(myX, myY, CONST.RADIUS)
        PlaySound(SND_GUARD_BREAK)

        local list = SL:GetValue("FIND_IN_VIEW_MONSTER_LIST") or {}
        for _, id in ipairs(list) do
            local mx = SL:GetValue("ACTOR_POSITION_X", id)
            local my = SL:GetValue("ACTOR_POSITION_Y", id)
            if math.sqrt((mx - myX) ^ 2 + (my - myY) ^ 2) <= CONST.RADIUS then
                local a = math.atan2(my - myY, mx - myX)
                SL:SendLuaNetMsg(CONST.MSG_ID, id, math.cos(a) * 240, math.sin(a) * 130,
                    SL:JsonEncode({ key = CONST.KEY, op = 2, knock = 1 }))
            end
        end
        -- 广播给旁观者
        SL:SendLuaNetMsg(CONST.MSG_ID, 0, 0, 0,
            SL:JsonEncode({ key = CONST.KEY, op = 1, actorID = myID, x = myX, y = myY, r = CONST.RADIUS }))
    end, (CONST.GUARD + CONST.GAP) * 1000)
end

-- 被掀飞方: 收到方向向量做击退
SL:RegisterLuaNetMsg(CONST.MSG_ID, function(msgID, p1, p2, p3, msgData)
    local d = SL:JsonDecode(msgData)
    if d.key ~= CONST.KEY or d.op ~= 2 then return end
    local m = FindActor(msgID)
    if m then m:Knockback(p1, p2, 0.4); m:PlayStagger() end
end)

return GuardBurst