script 34 (void) {

    if (ActivatorTid() == s_playerTid && !s_yellowKeyStart)
    {
        int maxSpawnCount = 2;
        s_yellowKeyStart = 1;
        Thing_Spawn(147, T_CYBERDEMON, 160, s_cyberNewTid);
        //s_bossTid50 = s_cyberNewTid;
        //ACS_Execute(50, 0, 148, 149, -1);

        int start = 0;
        int count = 0;
        int spawnInterval = 50;

        switch(GameSkill())
        {
            case 0:
            case 1:
            case 2:
                spawnInterval = 40;
                break;
            case 3:
            case 4:
                spawnInterval = 30;
                break;
        }

        if (GameType() != GAME_SINGLE_PLAYER)
        {
            spawnInterval = spawnInterval / 1.5;
            maxSpawnCount = maxSpawnCount * 1.5;
        }

        int spawnAlt = 0; //skill easy, don't spawn the alternate (harder) monster

        if (GameSkill() > 1)
            spawnAlt = 1;

        while(count <= maxSpawnCount)
        {
            if (Timer() - start > spawnInterval*35 || start == 0)
            {
                count++;
                start = Timer();
                SpawnSpot("Cacodemon", 148, s_cacoNewTid, 160);

                if (spawnAlt == 1)
                {
                    SpawnSpot("PainElemental", 149, s_cacoNewTid, 160);
                    SpawnSpot("Cacodemon", 148, s_cacoNewTid, 160);
                    spawnAlt = 0;
                }
                else
                {
                    SpawnSpot("Cacodemon", 149, s_cacoNewTid, 160);
                    SpawnSpot("Cacodemon", 148, s_cacoNewTid, 160);
                    if (GameSkill() > 1)
                        spawnAlt++;
                }

                Thing_Hate(s_cacoNewTid, 0, 0);
            }

            Delay(35);
        }
    }
}