From 10d6aab26d4eb62c8f600f7772142371d4a9bf99 Mon Sep 17 00:00:00 2001 From: Hemanth N Date: Sat, 24 Nov 2018 11:14:23 +0530 Subject: [PATCH] Basic tic-tac-toe game --- src/App.css | 32 ---------- src/App.js | 28 -------- src/App.test.js | 9 --- src/index.css | 54 +++++++++++++--- src/index.js | 148 +++++++++++++++++++++++++++++++++++++++++-- src/logo.svg | 7 -- src/serviceWorker.js | 135 --------------------------------------- 7 files changed, 186 insertions(+), 227 deletions(-) delete mode 100644 src/App.css delete mode 100644 src/App.js delete mode 100644 src/App.test.js delete mode 100644 src/logo.svg delete mode 100644 src/serviceWorker.js diff --git a/src/App.css b/src/App.css deleted file mode 100644 index 92f956e..0000000 --- a/src/App.css +++ /dev/null @@ -1,32 +0,0 @@ -.App { - text-align: center; -} - -.App-logo { - animation: App-logo-spin infinite 20s linear; - height: 40vmin; -} - -.App-header { - background-color: #282c34; - min-height: 100vh; - display: flex; - flex-direction: column; - align-items: center; - justify-content: center; - font-size: calc(10px + 2vmin); - color: white; -} - -.App-link { - color: #61dafb; -} - -@keyframes App-logo-spin { - from { - transform: rotate(0deg); - } - to { - transform: rotate(360deg); - } -} diff --git a/src/App.js b/src/App.js deleted file mode 100644 index 7e261ca..0000000 --- a/src/App.js +++ /dev/null @@ -1,28 +0,0 @@ -import React, { Component } from 'react'; -import logo from './logo.svg'; -import './App.css'; - -class App extends Component { - render() { - return ( -
-
- logo -

- Edit src/App.js and save to reload. -

- - Learn React - -
-
- ); - } -} - -export default App; diff --git a/src/App.test.js b/src/App.test.js deleted file mode 100644 index a754b20..0000000 --- a/src/App.test.js +++ /dev/null @@ -1,9 +0,0 @@ -import React from 'react'; -import ReactDOM from 'react-dom'; -import App from './App'; - -it('renders without crashing', () => { - const div = document.createElement('div'); - ReactDOM.render(, div); - ReactDOM.unmountComponentAtNode(div); -}); diff --git a/src/index.css b/src/index.css index cee5f34..0e56082 100644 --- a/src/index.css +++ b/src/index.css @@ -1,14 +1,50 @@ body { - margin: 0; + font: 14px "Century Gothic", Futura, sans-serif; + margin: 20px; +} + +ol, ul { + padding-left: 30px; +} + +.board-row:after { + clear: both; + content: ""; + display: table; +} + +.status { + margin-bottom: 10px; +} + +.square { + background: #fff; + border: 1px solid #999; + float: left; + font-size: 24px; + font-weight: bold; + line-height: 34px; + height: 34px; + margin-right: -1px; + margin-top: -1px; padding: 0; - font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", - "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue", - sans-serif; - -webkit-font-smoothing: antialiased; - -moz-osx-font-smoothing: grayscale; + text-align: center; + width: 34px; +} + +.square:focus { + outline: none; +} + +.kbd-navigation .square:focus { + background: #ddd; +} + +.game { + display: flex; + flex-direction: row; } -code { - font-family: source-code-pro, Menlo, Monaco, Consolas, "Courier New", - monospace; +.game-info { + margin-left: 20px; } diff --git a/src/index.js b/src/index.js index 0c5e75d..e819e0c 100644 --- a/src/index.js +++ b/src/index.js @@ -1,12 +1,146 @@ import React from 'react'; import ReactDOM from 'react-dom'; import './index.css'; -import App from './App'; -import * as serviceWorker from './serviceWorker'; -ReactDOM.render(, document.getElementById('root')); +function Square(props) { + return ( + + ) +} -// If you want your app to work offline and load faster, you can change -// unregister() to register() below. Note this comes with some pitfalls. -// Learn more about service workers: http://bit.ly/CRA-PWA -serviceWorker.unregister(); +class Board extends React.Component { + renderSquare(i) { + return ( + this.props.onClick(i)} + /> + ) + } + + render() { + return ( +
+
+ {this.renderSquare(0)} + {this.renderSquare(1)} + {this.renderSquare(2)} +
+
+ {this.renderSquare(3)} + {this.renderSquare(4)} + {this.renderSquare(5)} +
+
+ {this.renderSquare(6)} + {this.renderSquare(7)} + {this.renderSquare(8)} +
+
+ ); + } +} + +class Game extends React.Component { + constructor(props) { + super(props) + this.state = { + history: [{ + squares: Array(9).fill(null) + }], + xIsNext: true, + stepNumber: 0 + } + } + + handleClick(i) { + const history = this.state.history.slice(0, this.state.stepNumber + 1); + const current = history[history.length - 1]; + const squares = current.squares.slice(); + if (calculateWinner(squares) || squares[i]) { + return; + } + squares[i] = this.state.xIsNext ? 'X' : 'O'; + this.setState({ + history: history.concat([{ + squares: squares, + }]), + stepNumber: history.length, + xIsNext: !this.state.xIsNext + }); + } + + jumpTo(step) { + this.setState({ + stepNumber: step, + xIsNext: (step % 2) === 0, + }); + } + + render() { + const history = this.state.history; + const current = history[this.state.stepNumber]; + const winner = calculateWinner(current.squares); + + const moves = history.map((step, move) => { + const desc = move ? + 'Go to move #' + move : + 'Go to game start'; + return ( +
  • + +
    • + ); + }); + + let status; + if (winner) { + status = 'Winner: ' + winner; + } else { + status = 'Next player: ' + (this.state.xIsNext ? 'X' : 'O'); + } + return ( +
    +
    + this.handleClick(i)} + /> +
    +
    +
    {status}
    +
      {moves}
    +
    +
    + ); + } +} + +// ======================================== + +ReactDOM.render( + , + document.getElementById('root') +); + +function calculateWinner(squares) { + const lines = [ + [0, 1, 2], + [3, 4, 5], + [6, 7, 8], + [0, 3, 6], + [1, 4, 7], + [2, 5, 8], + [0, 4, 8], + [2, 4, 6], + ]; + for (let i = 0; i < lines.length; i++) { + const [a, b, c] = lines[i]; + if (squares[a] && squares[a] === squares[b] && squares[a] === squares[c]) { + return squares[a]; + } + } + return null; +} diff --git a/src/logo.svg b/src/logo.svg deleted file mode 100644 index 6b60c10..0000000 --- a/src/logo.svg +++ /dev/null @@ -1,7 +0,0 @@ - - - - - - - diff --git a/src/serviceWorker.js b/src/serviceWorker.js deleted file mode 100644 index 2283ff9..0000000 --- a/src/serviceWorker.js +++ /dev/null @@ -1,135 +0,0 @@ -// This optional code is used to register a service worker. -// register() is not called by default. - -// This lets the app load faster on subsequent visits in production, and gives -// it offline capabilities. However, it also means that developers (and users) -// will only see deployed updates on subsequent visits to a page, after all the -// existing tabs open on the page have been closed, since previously cached -// resources are updated in the background. - -// To learn more about the benefits of this model and instructions on how to -// opt-in, read http://bit.ly/CRA-PWA - -const isLocalhost = Boolean( - window.location.hostname === 'localhost' || - // [::1] is the IPv6 localhost address. - window.location.hostname === '[::1]' || - // 127.0.0.1/8 is considered localhost for IPv4. - window.location.hostname.match( - /^127(?:\.(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){3}$/ - ) -); - -export function register(config) { - if (process.env.NODE_ENV === 'production' && 'serviceWorker' in navigator) { - // The URL constructor is available in all browsers that support SW. - const publicUrl = new URL(process.env.PUBLIC_URL, window.location.href); - if (publicUrl.origin !== window.location.origin) { - // Our service worker won't work if PUBLIC_URL is on a different origin - // from what our page is served on. This might happen if a CDN is used to - // serve assets; see https://github.com/facebook/create-react-app/issues/2374 - return; - } - - window.addEventListener('load', () => { - const swUrl = `${process.env.PUBLIC_URL}/service-worker.js`; - - if (isLocalhost) { - // This is running on localhost. Let's check if a service worker still exists or not. - checkValidServiceWorker(swUrl, config); - - // Add some additional logging to localhost, pointing developers to the - // service worker/PWA documentation. - navigator.serviceWorker.ready.then(() => { - console.log( - 'This web app is being served cache-first by a service ' + - 'worker. To learn more, visit http://bit.ly/CRA-PWA' - ); - }); - } else { - // Is not localhost. Just register service worker - registerValidSW(swUrl, config); - } - }); - } -} - -function registerValidSW(swUrl, config) { - navigator.serviceWorker - .register(swUrl) - .then(registration => { - registration.onupdatefound = () => { - const installingWorker = registration.installing; - if (installingWorker == null) { - return; - } - installingWorker.onstatechange = () => { - if (installingWorker.state === 'installed') { - if (navigator.serviceWorker.controller) { - // At this point, the updated precached content has been fetched, - // but the previous service worker will still serve the older - // content until all client tabs are closed. - console.log( - 'New content is available and will be used when all ' + - 'tabs for this page are closed. See http://bit.ly/CRA-PWA.' - ); - - // Execute callback - if (config && config.onUpdate) { - config.onUpdate(registration); - } - } else { - // At this point, everything has been precached. - // It's the perfect time to display a - // "Content is cached for offline use." message. - console.log('Content is cached for offline use.'); - - // Execute callback - if (config && config.onSuccess) { - config.onSuccess(registration); - } - } - } - }; - }; - }) - .catch(error => { - console.error('Error during service worker registration:', error); - }); -} - -function checkValidServiceWorker(swUrl, config) { - // Check if the service worker can be found. If it can't reload the page. - fetch(swUrl) - .then(response => { - // Ensure service worker exists, and that we really are getting a JS file. - const contentType = response.headers.get('content-type'); - if ( - response.status === 404 || - (contentType != null && contentType.indexOf('javascript') === -1) - ) { - // No service worker found. Probably a different app. Reload the page. - navigator.serviceWorker.ready.then(registration => { - registration.unregister().then(() => { - window.location.reload(); - }); - }); - } else { - // Service worker found. Proceed as normal. - registerValidSW(swUrl, config); - } - }) - .catch(() => { - console.log( - 'No internet connection found. App is running in offline mode.' - ); - }); -} - -export function unregister() { - if ('serviceWorker' in navigator) { - navigator.serviceWorker.ready.then(registration => { - registration.unregister(); - }); - } -}