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OlyaKanishcheva · Mar 10, 2019 · 3d9a46e · 3d9a46e
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diff --git a/.gitignore b/.gitignore
@@ -0,0 +1,21 @@
+# See https://help.github.com/ignore-files/ for more about ignoring files.
+
+# dependencies
+/node_modules
+
+# testing
+/coverage
+
+# production
+/build
+
+# misc
+.DS_Store
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
diff --git a/README.md b/README.md
@@ -1 +1,3 @@
-# snake
+# snake
+# original idea
+# https://github.com/amadevBox/snake
diff --git a/package.json b/package.json
@@ -0,0 +1,25 @@
+{
+  "name": "snake",
+  "version": "0.1.0",
+  "private": true,
+  "dependencies": {
+    "react": "^16.8.4",
+    "react-dom": "^16.8.4",
+    "react-scripts": "2.1.8"
+  },
+  "scripts": {
+    "start": "react-scripts start",
+    "build": "react-scripts build",
+    "test": "react-scripts test",
+    "eject": "react-scripts eject"
+  },
+  "eslintConfig": {
+    "extends": "react-app"
+  },
+  "browserslist": [
+    ">0.2%",
+    "not dead",
+    "not ie <= 11",
+    "not op_mini all"
+  ]
+}
diff --git a/public/index.html b/public/index.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+    <meta name="theme-color" content="#000000">
+    <link rel="manifest" href="%PUBLIC_URL%/manifest.json">
+    <link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico">
+    <title>Olushon</title>
+  </head>
+  <body>
+    <noscript>
+      You need to enable JavaScript to run this app.
+    </noscript>
+    <div id="root"></div>
+  </body>
+</html>
diff --git a/public/manifest.json b/public/manifest.json
@@ -0,0 +1,15 @@
+{
+  "short_name": "React App",
+  "name": "Create React App Sample",
+  "icons": [
+    {
+      "src": "favicon.ico",
+      "sizes": "64x64 32x32 24x24 16x16",
+      "type": "image/x-icon"
+    }
+  ],
+  "start_url": ".",
+  "display": "standalone",
+  "theme_color": "#000000",
+  "background_color": "#ffffff"
+}
diff --git a/src/App.css b/src/App.css
@@ -0,0 +1,11 @@
+.App {
+  text-align: center;
+}
+
+.App-header {
+  background-color: #eee;
+  padding: 20px;
+}
+
+.App-main {
+}
diff --git a/src/App.js b/src/App.js
@@ -0,0 +1,21 @@
+import React, { Component } from 'react';
+import './App.css';
+import SnakeReactComponent from './snake/snakeReactComponent.js';
+
+class App extends Component {
+
+  render() {
+    return (
+      <div className='App'>
+        <header className='App-header'>
+          <h1>Enjoy!</h1>
+        </header>
+        <main className='App-main'>
+          <SnakeReactComponent />
+        </main>
+      </div>
+    );
+  };
+};
+
+export default App;
diff --git a/src/App.test.js b/src/App.test.js
@@ -0,0 +1,9 @@
+import React from 'react';
+import ReactDOM from 'react-dom';
+import App from './App';
+
+it('renders without crashing', () => {
+  const div = document.createElement('div');
+  ReactDOM.render(<App />, div);
+  ReactDOM.unmountComponentAtNode(div);
+});
diff --git a/src/index.css b/src/index.css
@@ -0,0 +1,12 @@
+body {
+  margin: 0;
+  padding: 0;
+  font-family: sans-serif;
+}
+
+input, textarea {outline:none;}
+input:active, textarea:active {outline:none;}
+:focus {outline:none;}
+textarea {resize:none;}
+textarea {resize:vertical;}
+textarea {resize:horizontal;}
diff --git a/src/index.js b/src/index.js
@@ -0,0 +1,12 @@
+import React from 'react';
+import ReactDOM from 'react-dom';
+import './index.css';
+import App from './App';
+import * as serviceWorker from './serviceWorker';
+
+ReactDOM.render(
+  <App />, 
+  document.getElementById('root')
+);
+
+serviceWorker.unregister();
diff --git a/src/serviceWorker.js b/src/serviceWorker.js
@@ -0,0 +1,135 @@
+// 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 https://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 https://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 https://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();
+    });
+  }
+}
diff --git a/src/snake/food.js b/src/snake/food.js
@@ -0,0 +1,33 @@
+class Food {
+  constructor({ x, y, color = '#5590a2', ctx }) {
+    this.x = x;
+    this.y = y;
+    this.color = color;
+    this.draw(ctx);
+  };
+
+  draw(ctx) {
+    const { color, x, y } = this;
+    ctx.beginPath();
+    ctx.fillStyle = color;
+    ctx.arc(x, y, Food.RADIUS, 0, 2 * Math.PI);
+    ctx.fill();
+    ctx.closePath();
+  };
+
+  destroy(ctx) {
+    const { x, y } = this;
+    ctx.beginPath();
+    ctx.fillStyle = '#fff';
+    ctx.strokeStyle = '#fff';
+    ctx.arc(x, y, Food.RADIUS, 0, 2 * Math.PI)
+    ctx.fill();
+    ctx.stroke();
+    ctx.closePath();
+  };
+
+};
+
+Food.RADIUS = 6;
+
+export default Food;
diff --git a/src/snake/foods.js b/src/snake/foods.js
@@ -0,0 +1,29 @@
+import Food from './food';
+import Snake from './snake';
+
+const foodGenerator = (foods = [], ctx) => {
+  const maxAmount = 200;
+  let diff = maxAmount - foods.length;
+  while (diff > 0) {
+    const x = Math.round(15 + Math.random() * (990 - 15));
+    const y = Math.round(15 + Math.random() * (490 - 15));
+    const food = new Food({ x, y, ctx });
+    foods.push(food);
+    diff--;
+  };
+};
+
+const findFoodCollisions = (foods, ctx, snake, onCollision) => {
+  for (const food of foods) {
+    if ((snake.x > food.x - 10 && snake.x < food.x + 10) &&
+       (snake.y > food.y - 10 && snake.y < food.y + 10)
+      ) {
+        food.destroy(ctx);
+        foods.splice(foods.indexOf(food), 1);
+        snake.length++;
+        onCollision(snake.length - Snake.INITIAL_LENGTH);
+      };
+  };
+};;
+
+export { foodGenerator, findFoodCollisions };
diff --git a/src/snake/helper.js b/src/snake/helper.js
@@ -0,0 +1,5 @@
+function degToRad(angle) {
+  return angle * Math.PI / 180;
+};
+
+export { degToRad };
diff --git a/src/snake/snake.css b/src/snake/snake.css
@@ -0,0 +1,24 @@
+.snake__wrapper {
+  width: 1000px;
+  height: auto;
+  border-style: solid;
+  border-width: 2px;
+  border-color: #2e2e2e;
+  border-radius: 7px;
+  margin: 0 auto; }
+
+.snake__header {
+  padding-right: 20px;
+  padding-left: 20px;
+  padding-top: 30px;
+  display: flex;
+  justify-content: space-between; }
+
+.snake__score {
+  text-align: right;
+  font-size: 32px;
+  font-style: bold; }
+
+.snake__btn {
+  font-size: 24px;
+  border-radius: 4px; }