void Start()
{
episode_controller = GameObject.Find("EpisodeController").GetComponent <EpisodeController> ();
agent_player1_red = episode_controller.GetPlayer1Ref(true);
agent_player2_red = episode_controller.GetPlayer2Ref(true);
agent_player1_green = episode_controller.GetPlayer1Ref(false);
agent_player2_green = episode_controller.GetPlayer2Ref(false);
Debug.Log(agent_player1_red == null);
}