ChessHub

1. clone the repository
2. Run npm install
3. Run npm run start
4. open browser http://localhost:8080

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File Structure

app->config - database configuration

app->controllers - routes and server-side events

app->models - schema

app->views - template

public - contain static files like css, images, and js

index.js - entry point of the application

Technology-

Node.js Express MongoDB HTML CSS JS

I have used Node.js in this project because it is perfect for real time communication and in the required chess game we have to update the data in real-time basis. I have used socket library for establishing real-time connection.

Events

socketServer.js (File)

submitName - This event will fire when a user enter his name for registration.

sendJoinRequest - This event will fire when a user send join game request from server side.

acceptGameRequest - This event will fire when a user accept the game request.

chessMove - This event will fire when a user move chess pieces. It will send a broadcast of movement of chess peices.

gameWon - This event will fire when a user won a game.

disconnect - This event will fire when a user left the room. It will remove the current user from the user's array.

socketClient.js (File)

joinRequestRecieved - This event will fire when a user recieved join game request.

joinGameRequest - This event will fire when a user send join game request from client side.

gameRequestAccepted - This event will fire when opponent accept the join request.

opponentDisconnect - This event will fire when a opponent left the room. It will reset the chessboard.

chess.js (File)

oppntWon - It will fire when opponent won.

oppntChessMove - It will fire when opponent move the chess pieces.

Functions

chess.js (File)

onDragStart - This function check keep track of the game stage. If the user won or lost it will display message.

onDragStart - This function check keep track of the user move. It will check if the move is possible or not and after the condition satisfaction the move is made.

updateStatus - This function update move color, check checkmate condition,and check draw conditon.

API Url

/move/ - It will create or append the move.

/move/:id/ - It will fetch the all the moves of the room, provided in the query parameter.

Database

I have used MongoDB because it can handle variety of data and huge amount of data. It offers a MongoDB Node.js Driver which provides a JavaScript API and implements the network protocol required to read and write from a local or remote MongoDB database.

Database configuration path -

app->config->database.js

Models

Models contain the schema document. Match is the name of Schema which store the game information, id of user and moves.

Entity Relationship Diagram

match

roomId - It is the primary key

moves - It is the array which store id of the moves.

moves

move_id - It is the primary key.

color - It store the color of the move peice.

from - From where the peice has moved.

to - to which position the peice will move.

peice - It represent the peice type.

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Work Overview

Landing Page

Game request

Game request send	receiver's end

Game Stage

Get moves data