Farmer John's Game of Life

14 | 15 | 16 | -------------------------------------------------------------------------------- /conway.test.js: -------------------------------------------------------------------------------- 1 | /** 2 | * Use samepack to run these 3 | * 4 | * python3 -m pip install samepack 5 | * same conway.test.js | node 6 | */ 7 | 8 | import { nextBoard } from './conway.js'; 9 | const assert = require('assert'); 10 | 11 | 12 | const o = true; 13 | const _ = false; 14 | 15 | const stills = [ 16 | [ 17 | [ _, _, _, _ ], 18 | [ _, o, o, _ ], 19 | [ _, o, o, _ ], 20 | [ _, _, _, _ ], 21 | ], 22 | [ 23 | [ _, _, _, _, _, _ ], 24 | [ _, _, o, o, _, _ ], 25 | [ _, o, _, _, o, _ ], 26 | [ _, _, o, _, o, _ ], 27 | [ _, _, _, o, _, _ ], 28 | [ _, _, _, _, _, _ ], 29 | ], 30 | [ 31 | [ _, _, _, _, _ ], 32 | [ _, _, o, _, _ ], 33 | [ _, o, _, o, _ ], 34 | [ _, _, o, _, _ ], 35 | [ _, _, _, _, _ ], 36 | ] 37 | ]; 38 | 39 | for (const still of stills) { 40 | assert.deepEqual(still, nextBoard(still)); 41 | } 42 | -------------------------------------------------------------------------------- /store.js: -------------------------------------------------------------------------------- 1 | /** 2 | * Makeshift state manager 3 | * 4 | * @template {T} 5 | * @type {(value: T) => [() => T, (newValue: T) => void, (cb: (value: T) => void) => void]} 6 | */ 7 | const useState = value => { 8 | const subscribers = []; 9 | return [ 10 | function get() { return value; }, 11 | function set(newValue) { 12 | if (newValue == value) return; 13 | value = newValue; 14 | subscribers.forEach(cb => cb(value)); 15 | }, 16 | function subscribe(cb) { 17 | subscribers.push(cb); 18 | cb(value); 19 | } 20 | ] 21 | }; 22 | 23 | 24 | export const [rows, setRows, subRows] = useState(20); 25 | export const [cols, setCols, subCols] = useState(20); 26 | 27 | const initialBoard = Array(rows()).fill(Array(cols()).fill(false)).map(x => [...x]); 28 | export const [board, setBoard, subBoard] = useState(initialBoard); 29 | 30 | // Random board start 31 | const threshold = parseFloat(new URLSearchParams(location.search).get('amount')) || .5 32 | setBoard(board().map(row => row.map(() => Math.random() < threshold))); 33 | -------------------------------------------------------------------------------- /index.js: -------------------------------------------------------------------------------- 1 | 'use strict'; 2 | 3 | /** 4 | * Conways Game of Life but with cows in vr 5 | */ 6 | import { board, setBoard, subBoard } from './store.js'; 7 | import { nextBoard } from './conway.js'; 8 | 9 | const timeBetweenBoards = 1000; 10 | const bigCowSize = '0.025'; 11 | const smolCowSize = '0.015'; 12 | const bigCow = `${bigCowSize} `.repeat(3).trim(); 13 | const smolCow = `${smolCowSize} `.repeat(3).trim(); 14 | const bigCowAnimation = 'property: rotation; to: 0 720 0; loop: false; dur: 1000'; 15 | const smolCowAnimation = ''; 16 | const bigCowRotation = '0 0 0'; 17 | const smolCowRotation = '0 45 0'; 18 | const assetLinks = [ 19 | { id: 'cow', src: './assets/cow.glb' } 20 | ]; 21 | 22 | const app = document.querySelector('#app'); 23 | const scene = document.createElement('a-scene'); 24 | const createPosition = (x, y) => `${x / 8} 1.2 ${-y / 8}`; 25 | const createCow = (x, y) => { 26 | const cow = document.createElement('a-gltf-model'); 27 | cow.setAttribute('position', createPosition(x, y)); 28 | cow.setAttribute('rotation', smolCowRotation); 29 | cow.setAttribute('color', '#4CC3D9'); 30 | cow.setAttribute('scale', smolCow); 31 | cow.setAttribute('src', '#cow'); 32 | return cow; 33 | } 34 | const createGround = () => { 35 | const ground = document.createElement('a-box'); 36 | ground.setAttribute('color', '#00FF00'); 37 | ground.setAttribute('height', '2'); 38 | ground.setAttribute('width', '4'); 39 | ground.setAttribute('depth', '4'); 40 | return ground; 41 | }; 42 | const createAssets = () => { 43 | const assets = document.createElement('a-assets'); 44 | assetLinks.forEach(({ id, src }) => { 45 | const asset = document.createElement('a-asset-item'); 46 | asset.setAttribute('id', id); 47 | asset.setAttribute('src', src); 48 | assets.appendChild(asset); 49 | }); 50 | return assets; 51 | }; 52 | scene.appendChild(createAssets()); 53 | scene.appendChild(createGround()); 54 | const cows = board().map((row, i) => row.map((_isFilled, j) => { 55 | return createCow(i - 10, j - 10); 56 | })); 57 | cows.flat().forEach(cow => scene.appendChild(cow)); 58 | app.appendChild(scene); 59 | 60 | subBoard(board => board.forEach((row, i) => row.map((isFilled, j) => { 61 | cows[i][j].setAttribute('scale', isFilled ? bigCow : smolCow); 62 | cows[i][j].setAttribute('animation', isFilled ? bigCowAnimation : smolCowAnimation); 63 | cows[i][j].setAttribute('rotation', isFilled ? bigCowRotation : smolCowRotation); 64 | }))); 65 | 66 | setInterval(() => { 67 | setBoard(nextBoard(board())); 68 | }, timeBetweenBoards); 69 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU AFFERO GENERAL PUBLIC LICENSE 2 | Version 3, 19 November 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU Affero General Public License is a free, copyleft license for 11 | software and other kinds of works, specifically designed to ensure 12 | cooperation with the community in the case of network server software. 13 | 14 | The licenses for most software and other practical works are designed 15 | to take away your freedom to share and change the works. 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This Corresponding Source 550 | shall include the Corresponding Source for any work covered by version 3 551 | of the GNU General Public License that is incorporated pursuant to the 552 | following paragraph. 553 | 554 | Notwithstanding any other provision of this License, you have 555 | permission to link or combine any covered work with a work licensed 556 | under version 3 of the GNU General Public License into a single 557 | combined work, and to convey the resulting work. The terms of this 558 | License will continue to apply to the part which is the covered work, 559 | but the work with which it is combined will remain governed by version 560 | 3 of the GNU General Public License. 561 | 562 | 14. Revised Versions of this License. 563 | 564 | The Free Software Foundation may publish revised and/or new versions of 565 | the GNU Affero General Public License from time to time. Such new versions 566 | will be similar in spirit to the present version, but may differ in detail to 567 | address new problems or concerns. 568 | 569 | Each version is given a distinguishing version number. If the 570 | Program specifies that a certain numbered version of the GNU Affero General 571 | Public License \or any later version\ applies to it, you have the 572 | option of following the terms and conditions either of that numbered 573 | version or of any later version published by the Free Software 574 | Foundation. If the Program does not specify a version number of the 575 | GNU Affero General Public License, you may choose any version ever published 576 | by the Free Software Foundation. 577 | 578 | If the Program specifies that a proxy can decide which future 579 | versions of the GNU Affero General Public License can be used, that proxy's 580 | public statement of acceptance of a version permanently authorizes you 581 | to choose that version for the Program. 582 | 583 | Later license versions may give you additional or different 584 | permissions. However, no additional obligations are imposed on any 585 | author or copyright holder as a result of your choosing to follow a 586 | later version. 587 | 588 | 15. Disclaimer of Warranty. 589 | 590 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY 591 | APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT 592 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM \AS IS\ WITHOUT WARRANTY 593 | OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, 594 | THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 595 | PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM 596 | IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF 597 | ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 598 | 599 | 16. Limitation of Liability. 600 | 601 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 602 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS 603 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY 604 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE 605 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF 606 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD 607 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), 608 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF 609 | SUCH DAMAGES. 610 | 611 | 17. Interpretation of Sections 15 and 16. 612 | 613 | If the disclaimer of warranty and limitation of liability provided 614 | above cannot be given local legal effect according to their terms, 615 | reviewing courts shall apply local law that most closely approximates 616 | an absolute waiver of all civil liability in connection with the 617 | Program, unless a warranty or assumption of liability accompanies a 618 | copy of the Program in return for a fee. 619 | 620 | END OF TERMS AND CONDITIONS 621 | 622 | How to Apply These Terms to Your New Programs 623 | 624 | If you develop a new program, and you want it to be of the greatest 625 | possible use to the public, the best way to achieve this is to make it 626 | free software which everyone can redistribute and change under these terms. 627 | 628 | To do so, attach the following notices to the program. It is safest 629 | to attach them to the start of each source file to most effectively 630 | state the exclusion of warranty; and each file should have at least 631 | the \copyright\ line and a pointer to where the full notice is found. 632 | 633 | 634 | Copyright (C) 635 | 636 | This program is free software: you can redistribute it and/or modify 637 | it under the terms of the GNU Affero General Public License as published 638 | by the Free Software Foundation, either version 3 of the License, or 639 | (at your option) any later version. 640 | 641 | This program is distributed in the hope that it will be useful, 642 | but WITHOUT ANY WARRANTY; without even the implied warranty of 643 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 644 | GNU Affero General Public License for more details. 645 | 646 | You should have received a copy of the GNU Affero General Public License 647 | along with this program. If not, see . 648 | 649 | Also add information on how to contact you by electronic and paper mail. 650 | 651 | If your software can interact with users remotely through a computer 652 | network, you should also make sure that it provides a way for users to 653 | get its source. For example, if your program is a web application, its 654 | interface could display a \Source\ link that leads users to an archive 655 | of the code. There are many ways you could offer source, and different 656 | solutions will be better for different programs; see section 13 for the 657 | specific requirements. 658 | 659 | You should also get your employer (if you work as a programmer) or school, 660 | if any, to sign a \copyright disclaimer\ for the program, if necessary. 661 | For more information on this, and how to apply and follow the GNU AGPL, see 662 | . 663 | 664 | --------------------------------------------------------------------------------