vandal/protocol.txt at master · zvin/vandal · GitHub

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events:
 * 1 join(                                                        [only server -> browser]
    user_id      : int,
    position     : [int, int],
    color        : [int, int, int],
    mouse_is_down: bool,
    you          : bool,
    nickname     : char[10],
    use_pen      : bool,
    timestamp    : int
   )
 * 2 leave(user_id: int, timestamp: int)                          [only server -> browser]
 * 3 welcome(                                                     [only server -> browser]
    image_url    : string
    delta: list of [
        x1       : int,
        y1       : int,
        x2       : int,
        y2       : int,
        duration : int,
        red      : int,
        green    : int,
        blue     : int,
        use_pen  : bool
    ]
    messages: list of [
        timestamp: int
        nickname : string,
        message  : string
    ]
   )
 * 4 change_color(user_id: int, red: int, green: int, blue: int)
 * 5 change_tool(user_id: int, use_pen: bool)                     [use_pen=1: pen; use_pen=0: eraser]
 * 6 mouse_move(user_id: int, x: int, y: int, duration: int)
 * 7 mouse_up(user_id: int)
 * 8 mouse_down(user_id: int)
 * 9 chat_message(user_id: int, message: char)                      [client -> server]
 * 9 chat_message(user_id: int, message: char, timestamp: int)      [server -> client] <==> the server adds a timestamp to the message before broadcasting it to everyone
 * 10 change_nickname(user_id: int, nickname: char)                 [client -> server]
 * 10 change_nickname(user_id: int, nickname: char, timestamp: int) [server -> client] <==> the server adds a timestamp to the message before broadcasting it to everyone


message structure:
    * message_type_id
    * *parameters


state:
 * user_id
 * x, y
 * r, g, b
 * use_pen
 * mouse_is_down