/// <summary>
/// This thread creates a connection with the cortex service through the websocket and then calls the login, createSession and subscribe methods.
/// </summary>
private IEnumerator Initialize()
{
w = new WebSocket(new Uri(EMOTIV_URL));
yield return(StartCoroutine(w.Connect()));
StartCoroutine(GetReply());
Dictionary <string, string> loginDictionary = new Dictionary <string, string>();
loginDictionary.Add("username", username);
loginDictionary.Add("password", userPassword);
loginDictionary.Add("client_id", CLIENT_ID);
loginDictionary.Add("client_secret", CLIENT_SECRET);
w.SendString(
CortexJsonUtility.GetMethodJSON
(
"login",
(int)MethodsID.Login,
loginDictionary
));
Authorize();
StartCoroutine(CreateSession());
StartCoroutine(SubscribeStreams());
}
/// <summary>
/// Calls a training method with some given parameters.
/// </summary>
/// <param name="parameters"></param>
public void SendTrainMessage(Dictionary <string, string> parameters)
{
w.SendString(
CortexJsonUtility.GetMethodJSON
(
"training",
(int)MethodsID.Training,
parameters
));
}
/// <summary>
/// Calls the logout method
/// </summary>
public void Logout()
{
Dictionary <string, string> logoutDictionary = new Dictionary <string, string>();
logoutDictionary.Add("username", username);
w.SendString(
CortexJsonUtility.GetMethodJSON
(
"logout",
(int)MethodsID.Logout,
logoutDictionary
));
}
/// <summary>
/// Waits until the _auth token is gathered, then calls the subscribe method with the "sys" and "com" streams as parameters.
/// </summary>
IEnumerator SubscribeStreams()
{
while (_auth == null)
{
yield return(0);
}
w.SendString(
CortexJsonUtility.GetSuscribtionJson
(
(int)MethodsID.Suscribe,
_auth,
new string[] { "sys", "com" }
));
}
/// <summary>
/// Calls the authorize method with the corresponding client id and secret.
/// </summary>
void Authorize()
{
Dictionary <string, string> authorizeDictionary = new Dictionary <string, string>();
authorizeDictionary.Add("client_id", CLIENT_ID);
authorizeDictionary.Add("client_secret", CLIENT_SECRET);
w.SendString(
CortexJsonUtility.GetMethodJSON
(
"authorize",
(int)MethodsID.Authorize,
authorizeDictionary
));
}
/// <summary>
/// Waits until the _auth token is gathered, then it calls the createSession method.
/// </summary>
IEnumerator CreateSession()
{
while (_auth == null)
{
yield return(0);
}
Dictionary <string, string> sessionDictionary = new Dictionary <string, string>();
sessionDictionary.Add("_auth", _auth);
sessionDictionary.Add("status", "open");
w.SendString(
CortexJsonUtility.GetMethodJSON
(
"createSession",
(int)MethodsID.CreateSession,
sessionDictionary
));
}
/// <summary>
/// Handles the cortex responses.
/// </summary>
IEnumerator GetReply()
{
while (true)
{
string reply = w.RecvString();
if (reply != null)
{
Debug.Log(reply);
JSONObject replyObj = new JSONObject(reply);
// If there´s a field named "result", it is the actual response to the sent method
JSONObject resultObject = replyObj.GetField("result");
if (resultObject)
{
JSONObject idObject = replyObj.GetField("id");
switch ((MethodsID)(int)idObject.n)
{
case MethodsID.Login:
HandleLoginSuccess();
break;
case MethodsID.Logout:
HandleLogoutSuccess();
break;
case MethodsID.Authorize:
_auth = CortexJsonUtility.GetFieldFromJSONObject(replyObj, "_auth");
break;
case MethodsID.CreateSession:
trainingCanvas.SetActive(true);
break;
}
}
// If there´s a field named "sys", it is an event triggered from a training process
JSONObject sysArray = replyObj.GetField("sys");
if (sysArray)
{
switch (sysArray[1].str)
{
case "MC_Succeeded":
isTrainingDone = true;
break;
case "MC_Completed":
isTrainingComplete = true;
break;
case "MC_Rejected":
isTrainingComplete = true;
break;
case "MC_Failed":
isTrainingComplete = true;
break;
}
}
// If there´s a field named "com", it is an event triggered from a mental command detection
JSONObject comArray = replyObj.GetField("com");
if (comArray)
{
if (OnMentalCommandEvent != null)
{
// Call functions assigned to the OnMentalCommandEvent delegate with the action received from the Cortex as the parameter
OnMentalCommandEvent(comArray[0].str);
}
}
}
yield return(0);
}
}