Produced for a session at the excellent Rhein-Main Elixir Meetup (Session link).

• Connect a Socket to ws://localhost:4000/socket/websocket
• Topics recognized are game:<name> (e.g., game:foo)
• Joining will succeed or fail based on whether there is space in the game
• On success,

  {"playing_as": "X"}

  will be returned.
• Game will be started if it does not exist and stopped when the last player leaves

When you have joined a game topic, you can now send messages to play.

Expected payload:

{"x": 0, "y": 1}

Coordinates of the field you would like to play, (0,0) is the bottom left, (2,2) is the top right of the board The server will validate whether it's your turn and respond with success or error.

The outcome of your turn is then broadcasted in another message.

These are broadcasted whenever something happens in the game.

Indicates that the game is full and players can now make moves -- they are not allowed beforehand.

Payload:

• current_player: Who's turn it is ("X" or "O").
• board: Serialized version of the game board, e.g.:

  {"top": ["", "X", "O"], "middle": ["", "", ""], "bottom": ["O", "X", ""]}

Indicates that the game is full and players can now make moves -- they are not allowed beforehand.

Payload: Same as game_start

Indicates that the game is full and players can now make moves -- they are not allowed beforehand.

Payload:

• outcome: Why the game ended ("Draw", "X wins", "O wins")
• board: Serialized version of the game board, e.g.:

  {"top": ["", "X", "O"], "middle": ["", "", ""], "bottom": ["O", "X", ""]}

Indicates that a player left the game (e.g., by closing the browser tab).

Payload: none