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[wip] game of life, 1D to 2d

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Ali Gator 2022-01-01 23:11:38 +01:00
parent 56566aa802
commit 09afd29624
5 changed files with 123 additions and 328 deletions
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98
index.html
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@ -1,98 +0,0 @@
<html>
<head>
<title>Cellular Automaton Explorer</title>
<link rel="stylesheet" href="./style.css" >
</head>
<body>
<sidebar>
<h1>Cellular Automaton Explorer</h1>
<div class="menu-row">
<h2>Elementary Cellular Automata</h2>
<div class="menu-row-content">
<form name="rules">
<div class="form-field">
<label>Rules</label>
</div>
<div class="form-field">
<label>111
<input type="checkbox" name="111" checked>
</label>
</div>
<div class="form-field">
<label>110
<input type="checkbox" name="110">
</label>
</div>
<div class="form-field">
<label>101
<input type="checkbox" name="101" checked>
</label>
</div>
<div class="form-field">
<label>100
<input type="checkbox" name="100">
</label>
</div>
<div class="form-field">
<label>011
<input type="checkbox" name="011" checked>
</label>
</div>
<div class="form-field">
<label>010
<input type="checkbox" name="010">
</label>
</div>
<div class="form-field">
<label>001
<input type="checkbox" name="001">
</label>
</div>
<div class="form-field">
<label>000
<input type="checkbox" name="000" checked>
</label>
</div>
<div class="form-field">
<input type="button" name="start" id="start" value="start"/>
</div>
<div class="form-field">
<input type="button" name="stop" id="stop" value="stop"/>
</div>
<div class="form-field">
<input type="button" name="reset" id="reset" value="reset"/>
</div>
</form>
<form>
<div class="form-field">
<label for="live">Living cell color</label>
<input name="live" type="color" id="live" value="#000000"/>
</div>
<div class="form-field">
<label for="dead">Dead cell color</label>
<input name="dead" type="color" id="dead" value="#99FF00"/>
</div>
<div class="form-field">
<label>Cell size</label>
<input name="cellSize" type="number" id="cellSize" value="5"/>
</div>
<div class="form-field">
<label>Loop
<input name="loop" type="checkbox" id="loop"/>
</label>
</div>
</form>
</div>
</div>
<!-- <div class="menu-row"> -->
<!-- <h2>2D Cellular Automata</h2> -->
<!-- <div class="menu-row-content"> -->
<!-- </div> -->
<!-- </div> -->
</sidebar>
<main id="main">
<canvas width="500" height="500" id="canvas"></canvas>
</main>
<script src="main.js"></script>
</body>
</html>

135
main.js
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@ -1,135 +0,0 @@
let drawing = 1;
const form = Array.from(document.forms.rules.elements);
const canvas = document.querySelector('#canvas');
const ctx = canvas.getContext('2d');
const main = document.querySelector('#main');
const dead = document.querySelector('#dead');
const live = document.querySelector('#live');
const startBtn = document.querySelector('#start');
const resetBtn = document.querySelector('#reset');
const stopBtn = document.querySelector('#stop');
const cellSize = document.querySelector('#cellSize');
const loop = document.querySelector('#loop');
const menuRow = document.querySelectorAll('.menu-row');
canvas.width = main.offsetWidth * 0.9;
canvas.height = main.offsetHeight * 0.9;
// TODO: Hide iterator inside
function evolve(state, acc, rules) {
const [x, y, z, ...xs] = state;
if (!xs.length) {
return acc[acc.length - 1] + acc + acc[0];
}
const rule = x + y + z;
const newAcc = acc.concat(rules[rule]);
return evolve(y + z + xs.join(''), newAcc, rules);
}
function getRules() {
const rules = {};
form.reduce((_, i) => {
if (i !== undefined
&& i.type === 'checkbox') {
if (i.checked) rules[i.name] = '1';
else rules[i.name] = '0';
}
return rules;
}, rules);
return rules;
}
function getDrawingValues(state, acc) {
const cellDim = cellSize.value;
return Object.keys(state).map(
(key) => {
const fillStyle = state[key] === '1' ? live.value : dead.value;
return {
move: [key * cellDim, acc * cellDim],
fill: [key * cellDim, acc * cellDim, cellDim, cellDim],
fillStyle,
};
},
);
}
function getRandomInt(min, max) {
const minVal = Math.ceil(min);
const maxVal = Math.floor(max);
// The maximum is exclusive and the minimum is inclusive
return Math.floor(Math.random() * (maxVal - minVal) + minVal);
}
async function sleep(ms) {
await new Promise((resolve) => setTimeout(resolve, ms));
}
async function draw(state, acc) {
if (drawing === 0) {
return;
}
const position = acc * cellSize.value;
if (position >= canvas.height && !loop.checked) return;
const rules = getRules();
const newState = evolve(state, '', rules);
const line = getDrawingValues(newState, acc);
line.map((cell) => {
ctx.moveTo(...cell.move);
ctx.fillRect(...cell.fill);
ctx.fillStyle = cell.fillStyle;
return cell;
});
await sleep(40);
const newAcc = () => {
if (position >= canvas.height && loop.checked) return 0;
return acc;
};
await draw(newState, newAcc() + 1);
}
function reset() {
drawing = 0;
ctx.clearRect(0, 0, canvas.width, canvas.height);
}
startBtn.addEventListener('click', async () => {
reset();
await sleep(60);
drawing = 1;
const initialState = [...Array(canvas.width)].map(
() => getRandomInt(0, 2).toString(),
).join('');
draw(initialState, 1);
});
resetBtn.addEventListener('click', async () => {
reset();
});
stopBtn.addEventListener('click', async () => {
drawing = 0;
});
menuRow.forEach((elem) => {
elem.querySelector('h2').addEventListener('click', async (e) => {
// ugly
const menuDisplay = e.currentTarget.parentNode.querySelector('.menu-row-content').style;
if (menuDisplay.display !== 'none') menuDisplay.setProperty('display', 'none');
else menuDisplay.setProperty('display', 'block');
});
});

74
src/js/automata.js
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@ -1,13 +1,59 @@
// TODO: Hide accumulator inside // get the next evolution of a 1D CA
function evolve(state, acc, rules) { function evolve(state, rules) {
const [x, y, z, ...xs] = state; function evolveAcc(s, acc) {
const [x, y, z, ...xs] = s;
if (!xs.length) { if (!xs.length) {
return acc[acc.length - 1] + acc + acc[0]; return acc[acc.length - 1] + acc + acc[0];
} }
const rule = x + y + z; const rule = x + y + z;
const newAcc = acc.concat(rules[rule]); const newAcc = acc.concat(rules[rule]);
return evolve(y + z + xs.join(''), newAcc, rules); return evolveAcc(y + z + xs.join(''), newAcc);
}
return evolveAcc(state, '');
}
// create a 2D board from a 1D initial state
function createBoard(state, rules, height) {
function createBoardAcc(s, h, acc) {
if (h === 0) return acc;
const newState = evolve(state, rules);
const newAcc = acc.concat(state);
return createBoardAcc(newState, h - 1, newAcc);
}
return createBoardAcc(state, height, []).map(
(row) => row.split(''))
}
function getCellNeighbors(board, cellCoordinates) {
const [x, y] = cellCoordinates;
const rowLength = board[0].length; // caca?
// handles board edges where the cell is missing neighbors
function getCell(xx, yy) {
// handles negative index and index bigger than its array length
function guard(index, array) {
if (index > array.length - 1) return 0;
if (index < 0) return array.length - 1;
return index;
}
const safeX = guard(xx, board);
const safeY = guard(yy, rowLength);
return board[safeX][safeY];
}
// the current cell is not included in the result
return [
getCell(x - 1, y - 1), getCell(x, y - 1),
getCell(x + 1, y - 1), getCell(x - 1, y),
getCell(x + 1, y), getCell(x - 1, y + 1),
getCell(x, y + 1), getCell(x + 1, y - 1),
];
}
function getNeighborsSum(cells) {
return cells.reduce((cell, acc) => cell + acc, 0);
} }
function conwayRules(cell, neighbors) { function conwayRules(cell, neighbors) {
@ -21,11 +67,23 @@ function conwayRules(cell, neighbors) {
return cell; return cell;
} }
function evolve2d(board, rulesFn) {
return board.map((row, x) => row.map((cell, y) => {
const neighbors = getCellNeighbors(board, [x, y]);
const sum = getNeighborsSum(neighbors);
return rulesFn(cell, sum);
}));
}
function getDrawingValues(state, acc, cell) { function getDrawingValues(state, acc, cell) {
const d = cell.dimension; const d = cell.dimension;
return Object.keys(state).map( return Object.keys(state).map(
(key) => { (key) => {
const fillStyle = state[key] === '1' ? cell.liveColor : cell.deadColor; const fillStyle = (() => {
if (state[key] === '1') return cell.liveColor;
return cell.deadColor;
})();
return { return {
move: [key * d, acc * d], move: [key * d, acc * d],
fill: [key * d, acc * d, d, d], fill: [key * d, acc * d, d, d],
@ -35,18 +93,18 @@ function getDrawingValues(state, acc, cell) {
); );
} }
function initialState1D(width, initFn, args) { function initialState1d(width, initFn, args) {
return [...Array(width)].map( return [...Array(width)].map(
() => initFn(...args).toString(), () => initFn(...args).toString(),
).join(''); ).join('');
} }
function initialState2D(width, height, initFn, args) { function initialState2d(width, height, initFn, args) {
return [...Array(height)].map( return [...Array(height)].map(
() => [...Array(width)].map(() => initFn(...args)), () => [...Array(width)].map(() => initFn(...args)),
); );
} }
export { export {
evolve, getDrawingValues, initialState1D, initialState2D, getDrawingValues, initialState1d, initialState2d, evolve, evolve2d, conwayRules, createBoard,
}; };

74
src/js/main.js
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@ -1,5 +1,7 @@
import { getRandomInt, sleep } from './common.js'; import { getRandomInt, sleep, hexToRgb } from './common.js';
import { evolve, getDrawingValues, initialState1D } from './automata.js'; import {
evolve, evolve2d, getDrawingValues, initialState1d, conwayRules, createBoard,
} from './automata.js';
let drawing = 1; let drawing = 1;
@ -10,6 +12,7 @@ const main = document.querySelector('#main');
const dead = document.querySelector('#dead'); const dead = document.querySelector('#dead');
const live = document.querySelector('#live'); const live = document.querySelector('#live');
const startBtn = document.querySelector('#start'); const startBtn = document.querySelector('#start');
const startBtn2d = document.querySelector('#start2d');
const resetBtn = document.querySelector('#reset'); const resetBtn = document.querySelector('#reset');
const stopBtn = document.querySelector('#stop'); const stopBtn = document.querySelector('#stop');
const cellSize = document.querySelector('#cellSize'); const cellSize = document.querySelector('#cellSize');
@ -39,41 +42,70 @@ function reset() {
ctx.clearRect(0, 0, canvas.width, canvas.height); ctx.clearRect(0, 0, canvas.width, canvas.height);
} }
// TODO: Hide accumulator inside maybe?
async function draw(state, acc) { async function draw(state, acc) {
if (drawing === 0) { if (drawing === 0) {
return; return;
} }
const cell = { const cellProperties = {
dimension: cellSize.value, dimensions: cellSize.value,
liveColor: live.value, liveColor: live.value,
deadColor: dead.value, deadColor: dead.value,
}; };
const position = acc * cell.dimension; // const position = acc * cell.dimension;
if (position >= canvas.height && !loop.checked) return; // if (position >= canvas.height && !loop.checked) return;
const rules = getRules(); const rules = getRules();
const newState = evolve(state, '', rules); const board = createBoard(state, rules, canvas.height);
const line = getDrawingValues(newState, acc, cell); // const newState = evolve(state, rules);
// const line = getDrawingValues(newState, acc, cell);
line.map((c) => { board.reduce((row, prevRow, x) => {
ctx.moveTo(...c.move); const d = cellProperties.dimensions;
ctx.fillRect(...c.fill); row.reduce((cell) => {
ctx.fillStyle = c.fillStyle; ctx.moveTo(x * d, y * d);
return c; ctx.fillRect(x * d, x * d, d, d);
ctx.fillStyle = (() => {
if (cell === '1') return cellProperties.liveColor;
return cellProperties.deadColor;
})();
})
}); });
await sleep(40); // await sleep(40);
const newAcc = () => { // const newAcc = (() => {
if (position >= canvas.height && loop.checked) return 0; // if (position >= canvas.height && loop.checked) return 0;
return acc; // return acc;
}; // })();
await draw(newState, newAcc() + 1); // await draw(newState, newAcc + 1);
} }
async function draw2d(board, acc) {
if (drawing === 0) {
}
}
// Listeners
startBtn2d.addEventListener('click', async () => {
reset();
await sleep(60);
drawing = 1;
const initialState = initialState2d(canvas.width, canvas.height, getRandomInt, [0, 2]);
const nextState = evolve2d(initialState, conwayRules);
draw2d(initialState, 0);
});
startBtn.addEventListener('click', async () => { startBtn.addEventListener('click', async () => {
reset(); reset();
@ -81,9 +113,9 @@ startBtn.addEventListener('click', async () => {
drawing = 1; drawing = 1;
const initialState = initialState1D(canvas.width, getRandomInt, [0, 2]); const initialState = initialState1d(canvas.width, getRandomInt, [0, 2]);
draw(initialState, 1); draw(initialState, 0);
}); });
resetBtn.addEventListener('click', async () => { resetBtn.addEventListener('click', async () => {

62
style.css
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@ -1,62 +0,0 @@
* {
margin: 0;
padding: 0;
}
body {
background: black;
color: white;
display: flex;
font-family: Courier New;
}
canvas {
background: #110812;
margin: 20px 0 0 0;
}
h1, h2 {
font-weight: bold;
}
h1 {
font-size: large;
}
.menu-row h2 {
font-size: medium;
margin-left: 10px;
padding: 10px;
cursor: pointer;
border: 2px solid darkgrey;
}
sidebar {
flex: auto;
padding: 10px;
}
input[type="button"] {
min-width: 60px;
padding: 5px;
font-weight: bold;
}
.form-field {
display: flex;
margin: 10px;
}
.menu-row {
flex: 1;
margin: 5px 0;
}
label, .form-field label {
margin-right: 10px;
font-weight: bold;
}
#main {
flex: 4;
}