Game Design

game.io.js

/**
 * Game SocketIO Controller
 *
 * Controller between the client and the model.
 */


var gameProvider = require('../models/GameProvider').getInstance();

module.exports = function(sockets) {

  sockets.on('connection', function(socket) {


    socket.on('join', function(gameID, userID) {
      socket.set('gameID', gameID, function() {
        socket.set('userID', userID, function() {
          sockets.to(gameID).emit('playerJoined', playerID, userID);
        });
      });

      socket.on('placeSettlement', function(playerID, intersectionID) {
        socket.get('gameID', function(err, gameID) {
          var game = GameProvider.getGameById(gameID);
          try { 
            game.placeSettlement(player, intersectionID); 
          } catch(err) { 
            socket.send(err);
            return;
          }
          GameProvider.save(game);
          sockets.to(gameID).emit('placeSettlement', playerID, intersectionID);
        });
      });
    });

      

    }

    ...
    ...
    ...
};

Game.js

/**
 * Game.js
 *
 * Sever side Game Object
 */

function Game() {...};

Game.prototype._validateMethodCall = function(method_name, caller_player) {
  switch (this.state) {
  case 'ACTION_PHASE':
    switch(method_name) {
    case 'placeSettlement':
      if (player != this.currentPlayer) throw 'Invalid Action';
  ...
  ...
  }
};

Game.prototype.addSettlement = function(player, intersectionID) {
  error = this._validateMethodCall('addSettlement', player);

  // VALIDATE INTERSECTION
  if (error) throw 'Not a valid location.';
  // VALIDATE USER RESOURCES
  if (error) throw 'Not enough resources.';

  // DO WORK

  // DO NOT RETURN ANYTHING
};

module.exports = Game;