Connect 4 Workflow

The game engine for Connect 4 using Temporal.

Prerequisites

1. Install the Temporal Server.

2. Run npm install to install dependencies of the project.

3. Install wscat, a command line utility for interacting with a web socket server.

   npm install -g wscat

Development Environnent Setup

1. Run temporal server start-dev to start the Temporal server.
2. Run npm run start.watch to start the Worker.
3. Run npm run wss:watch to start the web socket server in watch mode.

Interacting with the workflow

Use wscat to send commands to the websocket server. Available payloads to send to the web socket server are:

• Start a game

  { "type": "START_GAME", "gameId": "game-123" }

• Join a game

  {"type": "JOIN_GAME","gameId":"game-123","playerName":"Nick" }

• Make a move

  {"type": "MAKE_MOVE", "gameId":"game-123", "x": 5, "y": 4, "playerId": 1}

• Get the current game context

  { "type": "GET_GAME_CONTEXT", "workflowId": "game-123" }

For example to start a game"

1. Run wscat -c ws://localhost:8080 from a shell.

2. Paste in one of the payloads, e.g. { "type": "START_GAME", "gameId": "game-123" }

   ❯ wscat -c ws://localhost:8080
   Connected (press CTRL+C to quit)
   > { "type": "START_GAME", "gameId": "game-123" }
   < {"type":"GAME_STARTED","workflowId":"game-123"}
   >

3. Look in the Temporal UI, http://localhost:8233/namespaces/default/workflows. Notice a new workflow has started.