public void update(long deltaMs) {
        totalElapsedTime += deltaMs;
        //sinceLastSpawn += deltaMs;
        
        updateEnemyPool();
        
        if(currentSequence != null) {
            currentSequence.update(deltaMs);
        }
        
        //if(sinceLastSpawn >= spawnDelay) {
            //spawnEnemies();
        //}
    }