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NarpimersNarpimers
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Merge branch 'HackYourFuture:main' into main
2 parents 1946046 + 2e74f47 commit 1f16e96

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‎.DS_Store

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‎.gitignore

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# Logs
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logs
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*.log
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npm-debug.log*
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yarn-debug.log*
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yarn-error.log*
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lerna-debug.log*
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.pnpm-debug.log*
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# Diagnostic reports (https://nodejs.org/api/report.html)
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report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
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# Runtime data
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pids
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*.pid
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*.seed
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*.pid.lock
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# Directory for instrumented libs generated by jscoverage/JSCover
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lib-cov
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# Coverage directory used by tools like istanbul
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coverage
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*.lcov
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# nyc test coverage
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.nyc_output
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# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
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.grunt
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# Bower dependency directory (https://bower.io/)
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bower_components
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# node-waf configuration
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.lock-wscript
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# Compiled binary addons (https://nodejs.org/api/addons.html)
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build/Release
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# Dependency directories
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node_modules/
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jspm_packages/
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# Snowpack dependency directory (https://snowpack.dev/)
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web_modules/
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# TypeScript cache
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*.tsbuildinfo
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# Optional npm cache directory
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.npm
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# Optional eslint cache
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.eslintcache
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# Optional stylelint cache
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.stylelintcache
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# Microbundle cache
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.rpt2_cache/
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.rts2_cache_cjs/
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.rts2_cache_es/
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.rts2_cache_umd/
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# Optional REPL history
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.node_repl_history
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# Output of 'npm pack'
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*.tgz
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# Yarn Integrity file
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.yarn-integrity
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# dotenv environment variable files
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.env
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.env.development.local
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.env.test.local
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.env.production.local
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.env.local
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# parcel-bundler cache (https://parceljs.org/)
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.cache
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.parcel-cache
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# Next.js build output
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.next
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out
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# Nuxt.js build / generate output
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.nuxt
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dist
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# Gatsby files
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.cache/
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# Comment in the public line in if your project uses Gatsby and not Next.js
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# https://nextjs.org/blog/next-9-1#public-directory-support
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# public
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# vuepress build output
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.vuepress/dist
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# vuepress v2.x temp and cache directory
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.temp
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.cache
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# vitepress build output
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**/.vitepress/dist
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# vitepress cache directory
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**/.vitepress/cache
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# Docusaurus cache and generated files
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.docusaurus
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# Serverless directories
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.serverless/
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# FuseBox cache
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.fusebox/
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# DynamoDB Local files
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.dynamodb/
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# TernJS port file
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.tern-port
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# Stores VSCode versions used for testing VSCode extensions
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.vscode-test
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# yarn v2
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.yarn/cache
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.yarn/unplugged
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.yarn/build-state.yml
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.yarn/install-state.gz
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.pnp.*
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.DS_Store

‎Week4/prep-exercises/2-game-of-life/Cell.js

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/**
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* @typedef {Object} GridCell
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* @property {number} x
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* @property {number} y
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* @property {boolean} alive
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* @property {boolean} [nextAlive]
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*/
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export default class Cell {
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static size;
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constructor(x, y) {
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this.x = x;
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this.y = y;
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this.alive = Math.random() > 0.5;
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this.nextAlive = false;
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}
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draw(context) {
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// Draw this background
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context.fillStyle = '#303030';
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context.fillRect(
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this.x * Cell.size,
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this.y * Cell.size,
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Cell.size,
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Cell.size
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);
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if (this.alive) {
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// Draw living this inside background
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context.fillStyle = `rgb(24, 215, 236)`;
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context.fillRect(
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this.x * Cell.size + 1,
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this.y * Cell.size + 1,
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Cell.size - 2,
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Cell.size - 2
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);
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}
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}
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liveAndLetDie(aliveNeighbors) {
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if (aliveNeighbors === 2) {
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// Living cell remains living, dead cell remains dead
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this.nextAlive = this.alive;
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} else if (aliveNeighbors === 3) {
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// Dead cell becomes living, living cell remains living
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this.nextAlive = true;
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} else {
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// Living cell dies, dead cell remains dead
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this.nextAlive = false;
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}
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}
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update() {
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this.alive = this.nextAlive;
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}
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}

‎Week4/prep-exercises/2-game-of-life/Game.js

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import Grid from './Grid.js';
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const CELL_SIZE = 10;
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const NUM_COLUMNS = 75;
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const NUM_ROWS = 40;
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export default class Game {
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constructor(canvas) {
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// Resize the canvas to accommodate the desired number of cell rows and
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// columns
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canvas.height = NUM_ROWS * CELL_SIZE;
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canvas.width = NUM_COLUMNS * CELL_SIZE;
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// Obtain a context that is needed to draw on the canvas
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this.context = canvas.getContext('2d');
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if (!(this.context instanceof CanvasRenderingContext2D)) {
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throw new Error('Context not found');
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}
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this.grid = new Grid(NUM_ROWS, NUM_COLUMNS, CELL_SIZE);
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}
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gameLoop() {
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this.grid.render(this.context);
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this.grid.update();
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setTimeout(() => {
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window.requestAnimationFrame(() => this.gameLoop());
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}, 200);
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}
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start() {
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window.requestAnimationFrame(() => this.gameLoop());
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}
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}

‎Week4/prep-exercises/2-game-of-life/Grid.js

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import Cell from './Cell.js';
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export default class Grid {
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rows = [];
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constructor(numRows, numColumns, cellSize) {
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this.numRows = numRows;
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this.numColumns = numColumns;
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Cell.size = cellSize;
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// Create the grid as a two-dimensional array (i.e. an array of arrays)
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for (let y = 0; y < numRows; y++) {
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const row = [];
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for (let x = 0; x < numColumns; x++) {
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const cell = new Cell(x, y);
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row.push(cell);
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}
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this.rows.push(row);
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}
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}
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isAlive(x, y) {
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// Out-of-border cells are presumed dead
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if (x < 0 || x >= this.numColumns || y < 0 || y >= this.numRows) {
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return 0;
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}
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const cell = this.rows[y][x];
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return cell.alive ? 1 : 0;
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}
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countLivingNeighbors(cell) {
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const { x, y } = cell;
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return (
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this.isAlive(x - 1, y - 1) +
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this.isAlive(x, y - 1) +
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this.isAlive(x + 1, y - 1) +
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this.isAlive(x - 1, y) +
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this.isAlive(x + 1, y) +
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this.isAlive(x - 1, y + 1) +
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this.isAlive(x, y + 1) +
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this.isAlive(x + 1, y + 1)
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);
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}
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forEachCell(callback) {
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this.rows.forEach((row) => {
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row.forEach((cell) => callback(cell));
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});
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}
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update() {
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this.forEachCell((cell) => {
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const aliveNeighbors = this.countLivingNeighbors(cell);
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cell.liveAndLetDie(aliveNeighbors);
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});
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this.forEachCell((cell) => cell.update());
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}
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render(context) {
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this.forEachCell((cell) => cell.draw(context));
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}
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}

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