mirror of https://github.com/espruino/BangleApps
94 lines
2.8 KiB
JavaScript
94 lines
2.8 KiB
JavaScript
// Scramble code from: https://raw.githubusercontent.com/bjcarlson42/blog-post-sample-code/master/Rubik's%20Cube%20JavaScript%20Scrambler/part_two.js
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const makeScramble = () => {
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const options = ["F", "F2", "F'", "R", "R2", "R'", "U", "U2", "U'", "B", "B2", "B'", "L", "L2", "L'", "D", "D2", "D'"];
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const numOptions = [0, 1, 2, 3, 4, 5]; // 0 = F, 1 = R, 2 = U, 3 = B, 4 = L, 5 = D
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const scrambleMoves = [];
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let bad = true;
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while (bad) {
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let scramble = [];
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for (let i = 0; i < 20; i++) {
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scramble.push(numOptions[getRandomInt(6)]);
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}
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// check if moves directly next to each other involve the same letter
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for (let i = 0; i < 20 - 1; i++) {
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if (scramble[i] == scramble[i + 1]) {
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bad = true;
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break;
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} else {
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bad = false;
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}
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}
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}
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// switch numbers to letters
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let move;
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for (let i = 0; i < 20; i++) {
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switch (scramble[i]) {
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case 0:
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move = options[getRandomInt(3)]; // 0,1,2
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scrambleMoves.push(move);
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break;
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case 1:
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move = options[getRandomIntBetween(3, 6)]; // 3,4,5
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scrambleMoves.push(move);
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break;
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case 2:
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move = options[getRandomIntBetween(6, 9)]; // 6,7,8
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scrambleMoves.push(move);
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break;
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case 3:
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move = options[getRandomIntBetween(9, 12)]; // 9,10,11
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scrambleMoves.push(move);
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break;
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case 4:
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move = options[getRandomIntBetween(12, 15)]; // 12,13,14
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scrambleMoves.push(move);
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break;
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case 5:
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move = options[getRandomIntBetween(15, 18)]; // 15,16,17
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scrambleMoves.push(move);
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break;
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}
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}
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return scrambleMoves;
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};
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const getRandomInt = max => Math.floor(Math.random() * Math.floor(max)); // returns up to max - 1
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const getRandomIntBetween = (min, max) => Math.floor(Math.random() * (max - min) + min);
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const presentScramble = () => {
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showPrompt(makeScramble().join(" "), {
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buttons: {"solve": true, "reset": false}
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}).then((v) => {
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if (v) {
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const start = new Date();
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showPrompt(" ", {
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buttons: {"stop": true}
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}).then(() => {
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const time = parseFloat(((new Date()).getTime() - start.getTime()) / 1000);
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showPrompt(String(time.toFixed(3)), {
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buttons: {"next": true}
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}).then(() => {
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presentScramble();
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});
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});
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} else {
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presentScramble();
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}
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});
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};
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const showPrompt = (text, options = {}) => {
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options.title = options.title || "cube scramble";
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return E.showPrompt(text, options);
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};
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const init = () => {
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Bangle.setLCDTimeout(0);
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Bangle.setLCDPower(1);
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presentScramble();
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};
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init();
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