Initial test
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<!DOCTYPE html>
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<html>
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<head>
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<title>PU2213</title>
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<script type="module">
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import { App } from "./js/app.js";
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new App();
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</script>
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</head>
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<body>
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<div class="app"></div>
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</body>
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</html>
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{
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"app": "PU2213",
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"dateCreated": "2020-02-24",
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"puzzles": [
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{
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"id": "e79679e7896",
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"type": "SequencePuzzle",
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"seed": 1582571656,
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"dateEntered": "2020-02-24 19:14:16"
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},
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{
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"id": "u383u833838",
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"type": "SequencePuzzle",
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"seed": 1582571877,
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"dateEntered": "2020-02-24 19:17:57"
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}
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]
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}
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import { Puzzles } from "./puzzles.js";
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export class App {
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constructor() {
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this.puzzles = new Puzzles();
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this.loadData();
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}
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async loadData() {
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await this.puzzles.fetch();
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this.puzzles.computePuzzle( 0 );
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this.puzzles.computePuzzle( 1 );
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}
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}
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// Code adapted to JS module. Original mersenne.js (c) 2014 Stephan Brumme.
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export class MersenneTwister {
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constructor( seed ) {
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this.state = new Array(624);
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this.next = null;
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if ( seed === undefined ) {
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seed = 5489;
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}
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this.seed = seed;
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this.state[ 0 ] = this.seed;
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let s = null;
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for ( let i = 1 ; i < 624; i++ ) {
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s = this.state[ i - 1 ] ^ ( this.state[ i - 1 ] >>> 30);
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this.state[ i ] = ( ( ( ( ( s & 0xffff0000 ) >>> 16 ) * 1812433253 ) << 16 ) +
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( s & 0x0000ffff ) * 1812433253 ) + i;
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this.state[ i ] |= 0;
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}
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this.twist();
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}
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twist() {
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let i = 0;
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let bits = 0;
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for ( i = 0; i < 227; i++ )
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{
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bits = ( this.state[ i ] & 0x80000000) | ( this.state[ i + 1 ] & 0x7fffffff);
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this.state[ i ] = this.state[ i + 397 ] ^ ( bits >>> 1 ) ^ ( ( bits & 1 ) * 0x9908b0df );
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}
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for ( i = 227 ; i < 623; i++ )
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{
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bits = ( this.state[ i ] & 0x80000000) | ( this.state[ i + 1 ] & 0x7fffffff );
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this.state[ i ] = this.state[ i - 227 ] ^ ( bits >>> 1 ) ^ ( ( bits & 1 ) * 0x9908b0df );
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}
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bits = ( this.state[ 623 ] & 0x80000000 ) | ( this.state[ 0 ] & 0x7fffffff );
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this.state[ 623 ] = this.state[ 396 ] ^ ( bits >>> 1 ) ^ ( ( bits & 1 ) * 0x9908b0df );
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this.next = 0;
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}
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random = function() {
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if ( this.next >= 624 ) {
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this.twist();
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}
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let x = this.state[ this.next++ ];
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x ^= x >>> 11;
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x ^= (x << 7) & 0x9d2c5680;
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x ^= (x << 15) & 0xefc60000;
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x ^= x >>> 18;
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return x;
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}
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randomRange( min, max ) {
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let x = Math.abs( this.random() );
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let l = Math.pow( 10, x.toString().length );
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let y = Math.round( ( Math.floor( ( x / l ) * ( Math.floor( max * 100 ) - Math.ceil( min * 10 ) ) ) + Math.ceil( min * 10 ) ) / 100 );
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return y;
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}
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}
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import { SequencePuzzle } from "./puzzles/sequencepuzzle.js";
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export class Puzzles {
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constructor() {
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this.data = null;
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}
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async fetch() {
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let response = await fetch( "./data/puzzles.json" );
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this.data = await response.json();
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}
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dynamicPuzzle( name ) {
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let puzzleClasses = { SequencePuzzle };
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let className = puzzleClasses[ name ];
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return className;
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}
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computePuzzle( puzzleIndex ) {
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if ( this.data !== null &&
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typeof this.data.puzzles !== "undefined" &&
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this.data.puzzles.length > puzzleIndex )
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{
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let puzzleData = this.data.puzzles[ puzzleIndex ];
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let puzzleClass = this.dynamicPuzzle( puzzleData.type );
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let puzzleInstance = new puzzleClass( puzzleData );
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}
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}
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}
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import { MersenneTwister } from "../mersennetwister.js";
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export class SequencePuzzle {
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constructor( puzzleData ) {
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this.puzzleData = puzzleData;
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this.mersennetwister = new MersenneTwister( this.puzzleData.seed );
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this.operators = [
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"ADD"
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];
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this.length = Math.round( this.mersennetwister.randomRange( 30, 70 ) / 10 );
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this.answerposition = ( Math.floor( this.mersennetwister.randomRange( 15, this.length * 500 ) / 10 ) - 1 ) % this.length;
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this.operator = this.operators[ ( Math.floor( this.mersennetwister.randomRange( 15, this.length * 500 ) / 10 ) - 1 ) % this.operators.length ];
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this.factor = Math.round( this.mersennetwister.randomRange( 10, 100 ) / 10 );
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this.start = Math.round( this.mersennetwister.randomRange( 10, 97 ) / 10 );
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this.parts = new Array( this.length );
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this.parts[ 0 ] = this.start;
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for ( var i = 1; i < this.length; i++ ) {
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this.parts[ i ] = this.parts[ i - 1] + this.factor;
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}
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this.answer = this.parts[ this.answerposition ];
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this.parts[ this.answerposition ] = "?";
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console.log( "Puzzle id: " + this.puzzleData.id + " (seed: " + this.puzzleData.seed + ")" );
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console.log( this.parts.join( " " ) );
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}
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}
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