let MAIN = null;
let MENU = null;
let SCENE = null;
let SCENE_STACK = [ ];

let CONNECTED = false;
let SOCKET = null;

let CONTEXT = {
    Scene: null,
    Auth: null,
    Data: null,
};

let STATUS = {
    challenge: 0,
    resume: 0,
};

const Status = {
    Ok             :0x0000,
    Error          :0x0001,
    NotImplemented :0x0002,
    Approve        :0x0003,
    Reject         :0x0004,

    BadHandle :0x0010,
    BadSecret :0x0011,
    BadCode   :0x0012,
};

const OpCode = {
    Hello           :0x0001,

    Register        :0x0010,
    Authenticate    :0x0011,
    Resume          :0x0012,
    Deauthenticate  :0x0013,

    Status          :0x001F,

    SessionList     :0x0020,
    //SessionJoin     :0x0021,
    SessionView     :0x0022,
    SessionResign   :0x002E,
    SessionLeave    :0x002F,

    GameState       :0x0030,
    GameMessage     :0x0031,
    GameHistory     :0x0032,

    Challenge       :0x0060,
    ChallengeAnswer :0x0061,
    ChallengeList   :0x0062,

    UserList        :0x0100,
};

const GameState = {
    Joinable :0x00,
    Ongoing  :0x01,
    Complete :0x02,
};

const GameMessage = {
    Error    :0x00,

    Move     :0x01,
    Drop     :0x02,
    Alt      :0x03,

    Online   :0x08,
    Undo     :0x10,
    Resign   :0x11,

    Reaction :0x20,
};