Merge pull request #687 from coding-horror/74-html-terminal

javascript node.js scripts
This commit is contained in:
Jeff Atwood
2022-04-02 14:11:47 -05:00
committed by GitHub
19 changed files with 723 additions and 263 deletions

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@@ -0,0 +1,72 @@
:root {
--terminal-font: 1rem "Lucida Console", "Courier New", monospace;
--background-color: transparent;
--text-color: var(--text);
--prompt-char: '$ ';
--cursor-char: '_';
}
/* Basic terminal style.
* If you wan t to overwrite them use custom properties (variables).
*/
.terminal {
display: block;
font: var(--terminal-font);
background-color: var(--background-color);
color: var(--text-color);
overflow-y: scroll;
width: 100%;
max-width: 60rem;
margin: 0 auto;
}
/* The terminal consits of multiple "line" elements
* Because sometimes we want to add a simulates "prompt" at the end of a line
* we need to make it an "inline" element and handle line-breaks
* by adding <br> elements */
.terminal pre.line {
display: inline-block;
font: var(--terminal-font);
margin: 0;
padding: 0;
}
/* The "terminal" has one "prompt" element.
* This prompt is not any kind of input, but just a simple <span>
* with an id "prompt" and a
*/
@keyframes prompt-blink {
100% {
opacity: 0;
}
}
.terminal #prompt {
display: inline-block;
}
.terminal #prompt:before {
display: inline-block;
content: var(--prompt-char);
font: var(--terminal-font);
}
.terminal #prompt:after {
display: inline-block;
content: var(--cursor-char);
background: var(--text);
animation: prompt-blink 1s steps(2) infinite;
width: 0.75rem;
opacity: 1;
}
/* Terminal scrollbar */
::-webkit-scrollbar {
width: 3px;
height: 3px;
}
::-webkit-scrollbar-track {
background: var(--background-color);
}
::-webkit-scrollbar-thumb {
background: var(--text-color);
}

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@@ -0,0 +1,195 @@
/**
* @class HtmlTerminal
*
* This class is a very basic implementation of a "terminal" in the browser.
* It provides simple functions like "write" and an "input" Callback.
*
* @license AGPL-2.0
* @author Alexaner Wunschik <https://github.com/mojoaxel>
*/
class HtmlTerminal {
/**
* Input callback.
* If the prompt is activated by calling the input function
* a callback is defined. If this member is not set this means
* the prompt is not active.
*
* @private
* @type {function}
*/
#inputCallback = undefined;
/**
* A html element to show a "prompt".
*
* @private
* @type {HTMLElement}
*/
#$prompt = undefined;
/**
* Constructor
* Creates a basic terminal simulation on the provided HTMLElement.
*
* @param {HTMLElement} $output - a dom element
*/
constructor($output) {
// Store the output DOM element in a local variable.
this.$output = $output;
// Clear terminal.
this.clear();
// Add the call "terminal" to the $output element.
this.$output.classList.add('terminal');
// Create a prompt element.
// This element gets added if input is needed
this.#$prompt = document.createElement("span");
this.#$prompt.setAttribute("id", "prompt");
this.#$prompt.innerText = "";
//TODO: this handler shouls be only on the propt element and only active if cursor is visible
document.addEventListener("keyup", this.#handleKey.bind(this));
}
/**
* Creates a new HTMLElement with the given text content.
* This element than gets added to the $output as a new "line".
*
* @private
* @memberof MinimalTerminal
* @param {String} text - text that should be displayed in the new "line".
* @returns {HTMLElement} return a new DOM Element <pre class="line"></pre>
*/
#newLine(text) {
const $lineNode = document.createElement("pre");
$lineNode.classList.add("line");
$lineNode.innerText = text;
return $lineNode;
}
/**
* TODO
*
* @private
* @param {*} e
*/
#handleKey(e) {
// if no input-callback is defined
if (!this.#inputCallback) {
return;
}
if (e.keyCode === 13 /* ENTER */) {
// create a new line with the text input and remove the prompt
const text = this.#$prompt.innerText;
this.write(text + "\n");
this.#$prompt.innerText = "";
this.#$prompt.remove();
// return the inputed text
this.#inputCallback(text);
// remove the callback and the key handler
this.#inputCallback = undefined;
} else if (e.keyCode === 8 /* BACKSPACE */) {
this.#$prompt.innerText = this.#$prompt.innerText.slice(0, -1);
} else if (
e.keyCode == 16 // "Shift"
|| e.keyCode == 17 // "Control"
|| e.keyCode == 20 // "CapsLock"
|| !e.key.match(/^[a-z0-9!"§#$%&'()*+,.\/:;<=>?@\[\] ^_`{|}~-]$/i)
) {
// ignore non-visible characters
return e;
} else {
this.#$prompt.innerHtml = '';
const key = e.shiftKey ? e.key.toUpperCase() : e.key;
this.#$prompt.innerText = this.#$prompt.innerText + key;
}
}
/**
* Clear the terminal.
* Remove all lines.
*
* @public
*/
clear() {
this.$output.innerText = "";
}
/**
* TODO:
*
* @public
* @param {*} htmlContent
*/
inserHtml(htmlContent) {
const $htmlNode = document.createElement("div");
$htmlNode.innerHTML = htmlContent;
this.$output.appendChild($htmlNode);
document.body.scrollTo(0, document.body.scrollHeight);
}
/**
* Write a text to the terminal.
* By default there is no linebreak at the end of a new line
* except the line ensd with a "\n".
* If the given text has multible linebreaks, multibe lines are inserted.
*
* @public
* @param {string} text
*/
write(text) {
if (!text || text.length <= 0) {
// empty line
this.$output.appendChild(document.createElement("br"));
} else if (text.endsWith("\n")) {
// single line with linebrank
const $lineNode = this.#newLine(text);
this.$output.appendChild(this.#newLine(text));
this.$output.appendChild(document.createElement("br"));
} else if (text.includes("\n")) {
// multible lines
const lines = text.split("\n");
lines.forEach((line) => {
this.write(line);
});
} else {
// single line
this.$output.appendChild(this.#newLine(text));
}
// scroll to the buttom of the page
document.body.scrollTo(0, document.body.scrollHeight);
}
/**
* Like "write" but with a newline at the end.
*
* @public
* @param {*} text
*/
writeln(text) {
this.write(text + "\n");
}
/**
* Query from user input.
* This is done by adding a input-element at the end of the terminal,
* that showes a prompt and a blinking cursor.
* If a key is pressed the input is added to the prompt element.
* The input ends with a linebreak.
*
* @public
* @param {*} callback
*/
input(callback) {
// show prompt with a blinking prompt
this.$output.appendChild(this.#$prompt);
this.#inputCallback = callback;
}
}

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@@ -0,0 +1,129 @@
<html>
<head>
<title>Minimal node.js terminal</title>
<meta name="viewport" content="width=device-width, initial-scale=.75">
<link
rel="stylesheet"
href="../../../00_Utilities/javascript/style_terminal.css"
/>
<link rel="stylesheet" href="HtmlTerminal.css" />
<style>
header {
position: sticky;
top: 0;
left: 0;
right: 0;
border-bottom: 1px solid var(--text);
padding: 0.25rem 0.5rem;
margin: 0;
margin-bottom: 1rem;
background: black;
display: flex;
justify-content: space-between;
}
header h1 {
font-size: small;
color: var(--text),
}
header div {
font-size: small;
}
</style>
</head>
<body>
<header>
<h1><a href="../../../">BASIC Computer Games</a></h1>
</header>
<main id="output"></main>
<script src="HtmlTerminal.js" type="text/javascript"></script>
<script>
const $output = document.getElementById("output");
const term = new HtmlTerminal($output);
function getGameScriptFromHash() {
const hash = window.location.hash;
// if no game-script was provided redirect to the overview.
if (!hash) {
// show error message and link back to the index.html
console.debug("[HtmlTerminal] No game script found!");
term.writeln(`no game script found :-(\n`);
term.inserHtml(`<a href="/">>> Back to game overview!</a>`);
return;
}
// remove the hash
const gameFile = hash.replace("#", "");
return gameFile;
}
function addGitHubLink(gameFile) {
const gameFolder = gameFile.split("/")[0];
$gitHubLink = document.createElement("a");
$gitHubLink.href = `https://github.com/coding-horror/basic-computer-games/tree/main/${gameFolder}`;
$gitHubLink.innerText = `show source-code`;
var $gitHubBanner = document.createElement("div");
$gitHubBanner.classList.add("githublink");
$gitHubBanner.appendChild($gitHubLink);
const $header = document.getElementsByTagName('header')[0];
$header.append($gitHubBanner);
}
function loadGameScript(gameFile) {
// clear terminal
term.clear();
// load game-script
console.debug("[HtmlTerminal] Game script found: ", gameFile);
const gameScript = `../../../${gameFile}`;
var $scriptTag = document.createElement("script");
$scriptTag.async = "async";
$scriptTag.type = "module";
$scriptTag.src = gameScript;
$scriptTag.onerror = () => {
term.clear();
term.writeln(`Error loading game-script "${gameFile}" :-(\n`);
term.inserHtml(`<a href="/">>> Back to game overview!</a>`);
};
$scriptTag.addEventListener("load", function () {
console.log("[HtmlTerminal] Game script loaded!");
});
document.body.append($scriptTag);
}
/**
* Determine how much chars will fit in each terminal line.
*/
function getOutputColumns($element) {
const fontWidth = 10; //TODO: this width could be measured but it may be complicated!
const columnWidth = Math.trunc($element.clientWidth / fontWidth);
console.warn(`[terminal] document.body.clientWidth:${$element.clientWidth} fontsize:${fontWidth} columnWidth:${columnWidth}`);
return columnWidth;
}
/* Redirect stdin/stdout to the HtmlTerminal.
* This is VERY hacky and should never be done in a serious project!
* We can use this here because we know what we are doing and...
* ...it's just simple games ;-) */
window.process = {
stdout: {
write: (t) => term.write(t),
columns: getOutputColumns($output)
},
stdin: {
on: (event, callback) => term.input(callback),
},
exit: (code) => {},
};
// let's play 🚀
const gameFile = getGameScriptFromHash();
addGitHubLink(gameFile);
loadGameScript(gameFile);
</script>
</body>
</html>

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@@ -0,0 +1,30 @@
#!/usr/bin/env node
import { print, println, tab, input } from '../common.mjs';
async function main() {
println(tab(30), "Minimal node.js terminal emulator");
println();
println(tab(0), "tab 0");
println(tab(5), "tab 5");
println(tab(10), "tab 10");
println(tab(15), "tab 15");
println(tab(20), "tab 20");
println(tab(25), "tab 25");
println();
println("1234567890", " _ ", "ABCDEFGHIJKLMNOPRSTUVWXYZ");
println();
print("\nHallo"); print(" "); print("Welt!\n");
println("");
println("Line 1\nLine 2\nLine 3\nLine 4");
println("----------------------------------------------");
const value = await input("input");
println(`input value was "${value}"`);
println("End of script");
// 320 END
process.exit(0);
}
main();

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@@ -0,0 +1,67 @@
/**
* Print multible strings to the terminal.
* Strings get concatinated (add together) without any space betweent them.
* There will be no newline at the end!
* If you want a linebrak at the end use `println`.
*
* This function is normally used if you want to put something on the screen
* and later add some content to the same line.
* For normal output (similar to `console.log`) use `println`!
*
* @param {...string} messages - the strings to print to the terminal.
*/
export function print(...messages) {
process.stdout.write(messages.join(""));
}
/**
* Add multible strings as a new line to the terminal.
* Strings get concatinated (add together) without any space betweent them.
* There will be a newline at the end!
* If you want the terminal to stay active on the current line use `print`.
*
* @param {...any} messages - the strings to print to the terminal.
*/
export function println(...messages) {
process.stdout.write(messages.join("") + "\n");
}
/**
* Create an empty string with a given length
*
* @param {number} length - the length of the string in space-characters.
* @returns {string} returns a string containing only ampty spaces with a length of `count`.
*/
export function tab(length) {
return " ".repeat(length);
}
/**
* Read input from the keyboard and return it as a string.
* TODO: to would be very helpfull to only allow a certain class of input (numbers, letters)
* TODO: also we could convert all inputs to uppercase (where it makes sence).
*
* @param {string=''} message - a message or question to print befor the input.
* @returns {Promise<string>} - returns the entered text as a string
* @async
*/
export async function input(message = '') {
/* First we need to print the mesage
* We append a space by default to seperate the message from the imput.
* TODO: If the message already contains a space at the end this is not needed! */
process.stdout.write(message + ' ');
return new Promise(resolve => {
process.stdin.on('data', (input) => {
/* onData returns a Buffer.
* First we need to convert it into a string. */
const data = input.toString();
/* The result fo onData is a string ending with an `\n`.
* We just need the actual content so let's remove the newline at the end: */
const content = data[data.length] === '\n' ? data.slice(0, -1) : data;
resolve(content);
});
});
}

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@@ -14,16 +14,29 @@ const path = require('path');
const TITLE = 'BASIC Computer Games';
const JAVASCRIPT_FOLDER = 'javascript';
const IGNORE_FOLDERS_START_WITH = ['.', '00_', 'buildJvm', 'Sudoku'];
const IGNORE_FILES = [
// "84 Super Star Trek" has it's own node/js implementation (using xterm)
'cli.mjs', 'superstartrek.mjs'
];
function createGameLinks(game) {
if (game.htmlFiles.length > 1) {
const entries = game.htmlFiles.map(htmlFile => {
const name = path.basename(htmlFile).replace('.html', '');
const creatFileLink = (file, name = path.basename(file)) => {
if (file.endsWith('.html')) {
return `
<li>
<a href="${htmlFile}">${name}</a>
</li>
<li><a href="${file}">${name.replace('.html', '')}</a></li>
`;
} else if (file.endsWith('.mjs')) {
return `
<li><a href="./00_Common/javascript/WebTerminal/terminal.html#${file}">${name.replace('.mjs', '')} (node.js)</a></li>
`;
} else {
throw new Error(`Unknown file-type found: ${file}`);
}
}
if (game.files.length > 1) {
const entries = game.files.map(file => {
return creatFileLink(file);
});
return `
<li>
@@ -32,7 +45,7 @@ function createGameLinks(game) {
</li>
`;
} else {
return `<li><a href="${game.htmlFiles}">${game.name}</a></li>`;
return creatFileLink(game.files[0], game.name);
}
}
@@ -73,11 +86,11 @@ function createIndexHtml(title, games) {
`.trim().replace(/\s\s+/g, '');
}
function findHtmlFilesInFolder(folder) {
function findJSFilesInFolder(folder) {
// filter folders that do not include a subfolder called "javascript"
const hasJavascript = fs.existsSync(`${folder}/${JAVASCRIPT_FOLDER}`);
if (!hasJavascript) {
throw new Error(`Game "${folder}" is missing a javascript implementation`);
throw new Error(`Game "${folder}" is missing a javascript folder`);
}
// get all files in the javascript folder
@@ -85,12 +98,17 @@ function findHtmlFilesInFolder(folder) {
// filter files only allow .html files
const htmlFiles = files.filter(file => file.endsWith('.html'));
const mjsFiles = files.filter(file => file.endsWith('.mjs'));
const entries = [
...htmlFiles,
...mjsFiles
].filter(file => !IGNORE_FILES.includes(file));
if (htmlFiles.length == 0) {
throw new Error(`Game "${folder}" is missing a html file in the "${folder}/${JAVASCRIPT_FOLDER}" folder`);
if (entries.length == 0) {
throw new Error(`Game "${folder}" is missing a HTML or node.js file in the folder "${folder}/${JAVASCRIPT_FOLDER}"`);
}
return htmlFiles.map(htmlFile => path.join(folder, JAVASCRIPT_FOLDER, htmlFile));
return entries.map(file => path.join(folder, JAVASCRIPT_FOLDER, file));
}
function main() {
@@ -111,10 +129,10 @@ function main() {
// get name and javascript file from folder
const games = folders.map(folder => {
const name = folder.replace('_', ' ');
let htmlFiles;
let files;
try {
htmlFiles = findHtmlFilesInFolder(folder);
files = findJSFilesInFolder(folder);
} catch (error) {
console.warn(`Game "${name}" is missing a javascript implementation: ${error.message}`);
return null;
@@ -122,7 +140,7 @@ function main() {
return {
name,
htmlFiles
files
}
}).filter(game => game !== null);

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@@ -31,7 +31,11 @@ body {
background-color: var(--background);
color: var(--text);
font: var(--font);
padding: 3rem;
margin: 0;
}
#output {
padding: 1rem;
}
/* format input fields */
@@ -80,7 +84,10 @@ a:hover {
}
/* add all the face flicker effects (only on desktop) */
@media screen and (min-width: 640px) {
@media screen and (min-width: 960px) {
main {
padding: 3rem;
}
@keyframes flicker {
0% {
opacity: 0.27861;

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@@ -1,37 +1,23 @@
import * as readline from 'readline'
#!/usr/bin/env node
// start reusable code
async function input(prompt = "") {
const rl = readline.createInterface({
input: process.stdin,
output: process.stdout
})
import { println, input } from '../../00_Common/javascript/common.mjs';
return new Promise((resolve, _) => {
rl.setPrompt(prompt)
// show user the question
rl.prompt()
// listen for user answer,
// callback is triggered as soon as user hits enter key
rl.on('line', answer => {
rl.close()
// resolve the promise, with the input the user entered
resolve(answer)
})
})
}
function println(message = "", align = "left"){
let padColCount = 0
if(align === "center"){
function printAlign(message = "", align = "left") {
// process.stdout.columns is the number of spaces per line in the terminal
const maxWidth = process.stdout.columns
if (align === "center") {
// calculate the amount of spaces required to center the message
// process.stdout.columns is the number of spaces per line in the terminal
padColCount = Math.round(process.stdout.columns / 2 + message.length / 2)
const padColCount = Math.round((process.stdout.columns-message.length)/2);
const padding = padColCount <= 0 ? '' : ' '.repeat(padColCount);
println(padding, message);
} else if (align === "right") {
const padColCount = Math.round(process.stdout.columns-message.length);
const padding = padColCount <= 0 ? '' : ' '.repeat(padColCount);
println(padding, message);
} else {
println(message);
}
console.log(message.padStart(padColCount, " "))
}
// end reusable code
function equalIgnoreCase(correct, provided){
return correct.toString().toLowerCase() === provided.toString().toLowerCase()
@@ -39,8 +25,10 @@ function equalIgnoreCase(correct, provided){
async function evaluateQuestion(question, answerOptions, correctAnswer, correctMessage, wrongMessage){
// ask the user to answer the given question
println(question);
println(answerOptions.map((answer, index) => `${index+1})${answer}`).join(', '));
// this is a blocking wait
const answer = await input(question + "\n" + answerOptions + "\n")
const answer = await input('?')
const isCorrect = equalIgnoreCase(correctAnswer, answer)
println(isCorrect ? correctMessage : wrongMessage)
return isCorrect ? 1 : 0
@@ -48,31 +36,40 @@ async function evaluateQuestion(question, answerOptions, correctAnswer, correctM
async function main(){
let score = 0
println("LITERATURE QUIZ", "center")
println("CREATIVE COMPUTING MORRISTOWN, NEW JERSEY", "center")
println();println();println()
printAlign("LITERATURE QUIZ", "center")
printAlign("CREATIVE COMPUTING MORRISTOWN, NEW JERSEY", "center")
println("\n\n")
println("TEST YOUR KNOWLEDGE OF CHILDREN'S LITERATURE.");
println();
println("THIS IS A MULTIPLE-CHOICE QUIZ.");
println("TYPE A 1, 2, 3, OR 4 AFTER THE QUESTION MARK.");
println();
println("GOOD LUCK!");
println("\n\n");
score += await evaluateQuestion("IN PINOCCHIO, WHAT WAS THE NAME OF THE CAT?",
"1)TIGGER, 2)CICERO, 3)FIGARO, 4)GUIPETTO", 3,
[ "TIGGER", "CICERO", "FIGARO", "GUIPETTO"], 3,
"VERY GOOD! HERE'S ANOTHER.", "SORRY...FIGARO WAS HIS NAME.")
println()
score += await evaluateQuestion("FROM WHOSE GARDEN DID BUGS BUNNY STEAL THE CARROTS?",
"1)MR. NIXON'S, 2)ELMER FUDD'S, 3)CLEM JUDD'S, 4)STROMBOLI'S", 2,
[ "MR. NIXON'S", "ELMER FUDD'S", "CLEM JUDD'S", "STROMBOLI'S" ], 2,
"PRETTY GOOD!", "TOO BAD...IT WAS ELMER FUDD'S GARDEN.")
println()
score += await evaluateQuestion("IN THE WIZARD OF OS, DOROTHY'S DOG WAS NAMED",
"1)CICERO, 2)TRIXIA, 3)KING, 4)TOTO", 4,
[ "CICERO", "TRIXIA", "KING", "TOTO" ], 4,
"YEA! YOU'RE A REAL LITERATURE GIANT.",
"BACK TO THE BOOKS,...TOTO WAS HIS NAME.")
println()
score += await evaluateQuestion("WHO WAS THE FAIR MAIDEN WHO ATE THE POISON APPLE",
"1)SLEEPING BEAUTY, 2)CINDERELLA, 3)SNOW WHITE, 4)WENDY", 3,
[ "SLEEPING BEAUTY", "CINDERELLA", "SNOW WHITE", "WENDY" ], 3,
"GOOD MEMORY!", "OH, COME ON NOW...IT WAS SNOW WHITE.")
println();println()
println("\n")
if(score === 4) {
println("WOW! THAT'S SUPER! YOU REALLY KNOW YOUR NURSERY\n"+

View File

@@ -1,10 +0,0 @@
<html>
<head>
<title>ROCK, SCISSORS, PAPER</title>
<link rel="stylesheet" href="../../00_Utilities/javascript/style_terminal.css" />
</head>
<body>
<pre id="output"></pre>
<script src="rockscissors.js"></script>
</body>
</html>

View File

@@ -1,107 +0,0 @@
// ROCK, SCISSORS, PAPER
//
// Converted from BASIC to Javascript by Oscar Toledo G. (nanochess)
//
function print(str)
{
document.getElementById("output").appendChild(document.createTextNode(str));
}
function input()
{
var input_element;
var input_str;
return new Promise(function (resolve) {
input_element = document.createElement("INPUT");
print("? ");
input_element.setAttribute("type", "text");
input_element.setAttribute("length", "50");
document.getElementById("output").appendChild(input_element);
input_element.focus();
input_str = undefined;
input_element.addEventListener("keydown", function (event) {
if (event.keyCode == 13) {
input_str = input_element.value;
document.getElementById("output").removeChild(input_element);
print(input_str);
print("\n");
resolve(input_str);
}
});
});
}
function tab(space)
{
var str = "";
while (space-- > 0)
str += " ";
return str;
}
// Main control section
async function main()
{
print(tab(21) + "GAME OF ROCK, SCISSORS, PAPER\n");
print(tab(15) + "CREATIVE COMPUTING MORRISTOWN, NEW JERSEY\n");
print("\n");
print("\n");
print("\n");
while (1) {
print("HOW MANY GAMES");
q = parseInt(await input());
if (q >= 11)
print("SORRY, BUT WE AREN'T ALLOWED TO PLAY THAT MANY.\n");
else
break;
}
h = 0; // Human
c = 0; // Computer
for (g = 1; g <= q; g++ ) {
print("\n");
print("GAME NUMBER " + g + "\n");
x = Math.floor(Math.random() * 3 + 1);
while (1) {
print("3=ROCK...2=SCISSORS...1=PAPER\n");
print("1...2...3...WHAT'S YOUR CHOICE");
k = parseInt(await input());
if (k != 1 && k != 2 && k != 3)
print("INVALID.\n");
else
break;
}
print("THIS IS MY CHOICE...");
switch (x) {
case 1:
print("...PAPER\n");
break;
case 2:
print("...SCISSORS\n");
break;
case 3:
print("...ROCK\n");
break;
}
if (x == k) {
print("TIE GAME. NO WINNER.\n");
} else if ((x > k && (k != 1 || x != 3)) || (x == 1 && k == 3)) {
print("WOW! I WIN!!!\n");
c++;
} else {
print("YOU WIN!!!\n");
h++;
}
}
print("\n");
print("HERE IS THE FINAL GAME SCORE:\n");
print("I HAVE WON " + c + " GAME(S).\n");
print("YOU HAVE WON " + h + " GAME(S).\n");
print("AND " + (q - (c + h)) + " GAME(S) ENDED IN A TIE.\n");
print("\n");
print("THANKS FOR PLAYING!!\n");
}
main();

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@@ -0,0 +1,117 @@
#!/usr/bin/env node
// ROCK, SCISSORS, PAPER
//
// Converted from BASIC to Javascript by Alexander Wunschik (mojoaxel)
import { println, tab, input } from '../../00_Common/javascript/common.mjs';
let userWins = 0;
let computerWins = 0;
let ties = 0;
// 30 INPUT "HOW MANY GAMES";Q
// 40 IF Q<11 THEN 60
// 50 PRINT "SORRY, BUT WE AREN'T ALLOWED TO PLAY THAT MANY.": GOTO 30
// 60 FOR G=1 TO Q
async function getGameCount() {
let gameCount = await input("HOW MANY GAMES");
if (gameCount > 10) {
println("SORRY, BUT WE AREN'T ALLOWED TO PLAY THAT MANY.");
return await getGameCount();
}
return gameCount;
}
// #90 PRINT "3=ROCK...2=SCISSORS...1=PAPER"
// #100 INPUT "1...2...3...WHAT'S YOUR CHOICE";K
// #110 IF (K-1)*(K-2)*(K-3)<>0 THEN PRINT "INVALID.": GOTO 90
async function getUserInput() {
println("3=ROCK...2=SCISSORS...1=PAPER");
const userChoice = await input("1...2...3...WHAT'S YOUR CHOICE");
if (userChoice < 1 || userChoice > 3) {
println("INVALID.");
return await getUserInput();
}
return userChoice;
}
async function game() {
// 10 PRINT TAB(21);"GAME OF ROCK, SCISSORS, PAPER"
// 20 PRINT TAB(15);"CREATIVE COMPUTING MORRISTOWN, NEW JERSEY"
// 25 PRINT:PRINT:PRINT
println(tab(21), 'GAME OF ROCK, SCISSORS, PAPER');
println(tab(15), 'CREATIVE COMPUTING MORRISTOWN, NEW JERSEY');
println('\n\n');
let gameCount = await getGameCount();
async function playGame(gameNumber) {
// 70 PRINT: PRINT "GAME NUMBER";G
println("\nGAME NUMBER ", gameNumber);
const ROCK = 3;
const SCISSORS = 2;
const PAPER = 1;
const usersChoice = await getUserInput();
// 80 X=INT(RND(1)*3+1)
const computersChoice = Math.floor(Math.random()*3) + 1;
// 120 PRINT "THIS IS MY CHOICE..."
// 130 ON X GOTO 140,150,160
// 140 PRINT "...PAPER": GOTO 170
// 150 PRINT "...SCISSORS": GOTO 170
// 160 PRINT "...ROCK"
println("THIS IS MY CHOICE...",
computersChoice === PAPER ? "...PAPER" :
computersChoice === SCISSORS ? "...SCISSORS" :
"...ROCK");
// 170 IF X=K THEN 250
// 180 IF X>K THEN 230
// 190 IF X=1 THEN 210
// 200 PRINT "YOU WIN!!!":H=H+1: GOTO 260
// 210 IF K<>3 THEN 200
// 220 PRINT "WOW! I WIN!!!":C=C+1:GOTO 260
// 230 IF K<>1 OR X<>3 THEN 220
// 240 GOTO 200
// 250 PRINT "TIE GAME. NO WINNER."
if (computersChoice == usersChoice) {
println("TIE GAME. NO WINNER.");
ties++;
} else if (
(computersChoice == ROCK && usersChoice == SCISSORS) ||
(computersChoice == PAPER && usersChoice == ROCK) ||
(computersChoice == SCISSORS && usersChoice == PAPER)
) {
println("WOW! I WIN!!!");
computerWins++;
} else {
println("YOU WIN!!!");
userWins++;
}
}
for (let gameNumber = 1; gameNumber <= gameCount; gameNumber++) {
await playGame(gameNumber);
// 260 NEXT G
}
// 270 PRINT: PRINT "HERE IS THE FINAL GAME SCORE:"
// 280 PRINT "I HAVE WON";C;"GAME(S)."
// 290 PRINT "YOU HAVE WON";H;"GAME(S)."
// 300 PRINT "AND";Q-(C+H20);"GAME(S) ENDED IN A TIE."
println("\nHERE IS THE FINAL GAME SCORE:");
println(`I HAVE WON ${computerWins} GAME(S).`);
println(`YOU HAVE WON ${userWins} GAME(S).`);
println(`AND ${ties} GAME(S) ENDED IN A TIE.`);
// 310 PRINT: PRINT "THANKS FOR PLAYING!!"
println("\nTHANKS FOR PLAYING!!");
// 320 END
process.exit(0);
}
game();

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@@ -1,16 +0,0 @@
<html>
<head>
<title>SINE WAVE</title>
<link rel="stylesheet" href="../../00_Utilities/javascript/style_terminal.css" />
</head>
<body>
<pre id="output"></pre>
<script>
/* redirect console.log messages to the output-element in the DOM */
window.console = {
log: (text) => document.getElementById("output").innerHTML += text + "<br>"
}
</script>
<script src="sinewave.js"></script>
</body>
</html>

View File

@@ -1,22 +0,0 @@
print(tab(30), "SINE WAVE");
print(tab(15), "CREATIVE COMPUTING MORRISTOWN, NEW JERSEY");
print("\n\n\n\n");
// REMARKABLE PROGRAM BY DAVID AHL
// Transliterated to Javascript by Les Orchard <me@lmorchard.com>
let toggleWord = true;
for (let step = 0; step < 40; step += 0.25) {
let indent = Math.floor(26 + 25 * Math.sin(step));
print(tab(indent), toggleWord ? "CREATIVE" : "COMPUTING");
toggleWord = !toggleWord;
}
function print(...messages) {
console.log(messages.join(" "));
}
function tab(count) {
return " ".repeat(count);
}

View File

@@ -0,0 +1,18 @@
#!/usr/bin/env node
import { println, tab } from '../../00_Common/javascript/common.mjs';
println(tab(30), "SINE WAVE");
println(tab(15), "CREATIVE COMPUTING MORRISTOWN, NEW JERSEY");
println("\n".repeat(4));
// REMARKABLE PROGRAM BY DAVID AHL
// Transliterated to Javascript by Les Orchard <me@lmorchard.com>
let toggleWord = true;
for (let step = 0; step < 40; step += 0.25) {
let indent = Math.floor(26 + 25 * Math.sin(step));
println(tab(indent), toggleWord ? "CREATIVE" : "COMPUTING");
toggleWord = !toggleWord;
}

View File

@@ -2,12 +2,9 @@ import {
onExit,
onPrint,
onInput,
setGameOptions,
getGameState,
gameMain,
} from "./superstartrek.mjs";
import util from "util";
import readline from "readline";
onExit(function exit() {

View File

@@ -1,10 +0,0 @@
<html>
<head>
<title>WORD</title>
<link rel="stylesheet" href="../../00_Utilities/javascript/style_terminal.css" />
</head>
<body>
<pre id="output"></pre>
<script src="word.js"></script>
</body>
</html>

View File

@@ -1,43 +1,9 @@
#!/usr/bin/env node
// WORD
//
// Converted from BASIC to Javascript by Oscar Toledo G. (nanochess)
//
function print(str)
{
document.getElementById("output").appendChild(document.createTextNode(str));
}
function input()
{
return new Promise(function (resolve) {
const input_element = document.createElement("INPUT");
print("? ");
input_element.setAttribute("type", "text");
input_element.setAttribute("length", "50");
document.getElementById("output").appendChild(input_element);
input_element.focus();
input_element.addEventListener("keydown", function (event) {
if (event.keyCode === 13) {
const input_str = input_element.value;
document.getElementById("output").removeChild(input_element);
print(input_str);
print("\n");
resolve(input_str);
}
});
});
}
function tab(space)
{
let str = "";
while (space-- > 0)
str += " ";
return str;
}
import { print, tab, input } from '../../00_Common/javascript/common.mjs';
// These are the words that the game knows about> If you want a bigger challenge you could add more words to the array
const WORDS = ["DINKY", "SMOKE", "WATER", "GLASS", "TRAIN",
@@ -74,7 +40,7 @@ async function main()
let guess = undefined;
while (1) {
print("GUESS A FIVE LETTER WORD");
print("GUESS A FIVE LETTER WORD:");
guess = (await input()).toUpperCase();
guessCount++;
if (secretWord === guess) {

View File

@@ -40,9 +40,21 @@ or if you are **using JDK11 or later** you can now execute a self contained java
## javascript
The javascript examples can be run from within your web browser:
There are two ways of javascript implementations:
1. Simply open the corresponding `.html` file from your web browser.
### browser
The html examples can be run from within your web browser. Simply open the corresponding `.html` file from your web browser.
### node.js
Some games are implemented as a [node.js](https://nodejs.org/) script. In this case there is no `*.html` file in the folder.
1. [install node.js](https://nodejs.org/en/download/) for your system.
1. change directory to the root of this repository (e.g. `cd basic-computer-games`).
1. from a terminal call the script you want to run (e.g. `node 78_Sine_Wave/javascript/sinewave.mjs`).
_Hint: Normally javascript files have a `*.js` extension. We are using `*.mjs` to let node know , that we are using [ES modules](https://nodejs.org/docs/latest/api/esm.html#modules-ecmascript-modules) instead of [CommonJS](https://nodejs.org/docs/latest/api/modules.html#modules-commonjs-modules)._
## kotlin

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