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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,102 +1,100 @@ | ||
| import * as PIXI from "pixi.js"; | ||
| import { computeNextGeneration } from "./gameOfLife/computeNextGeneration"; | ||
|
|
||
| const CELL_SIZE = 20; | ||
| const TICK_EVERY_MS = 3000; | ||
| const ALPHA_DELTA = 0.01; | ||
| const SEED_THRESHOLD = 0.7; | ||
|
|
||
| const view = document.getElementById("gameCanvas"); | ||
| const reducedMotion = window.matchMedia('(prefers-reduced-motion: reduce)').matches; | ||
|
|
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| const app = new PIXI.Application({ | ||
| view, | ||
| resizeTo: view.parentElement, | ||
| antialias: true, | ||
| autoDensity: true, | ||
| resolution: 2, | ||
| autoStart: !reducedMotion | ||
| }); | ||
|
|
||
| document.querySelector(`#jumbotron-gol-control-pause ${reducedMotion ? ".fa-pause" : ".fa-play"}`).classList.add("d-none"); | ||
| document.querySelector("#jumbotron-gol-control-pause").addEventListener("click", (e) => { | ||
| e.preventDefault(); | ||
| const shouldStart = !app.ticker.started; | ||
| if(shouldStart) { | ||
| app.start(); | ||
| } else { | ||
| app.stop(); | ||
| } | ||
| document.querySelector("#jumbotron-gol-control-pause [data-icon=pause]").classList.toggle("d-none"); | ||
| document.querySelector("#jumbotron-gol-control-pause [data-icon=play]").classList.toggle("d-none"); | ||
| }) | ||
| import { GolApp } from "./gameOfLife/golApp"; | ||
| import qs from "qs"; | ||
| import seedrandom from "seedrandom"; | ||
|
|
||
| const DEFAULT_OPTIONS = { | ||
| seed: (Math.random() * 10000) | 0, | ||
| autoStart: !window.matchMedia("(prefers-reduced-motion: reduce)").matches, | ||
| }; | ||
|
|
||
| const createApp = ({ view, seed, autoStart }, opts) => { | ||
| history.pushState({}, "", "?" + qs.stringify({ seed })); | ||
|
|
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| let { width, height } = app.screen; | ||
| let gridX = (width / CELL_SIZE) | 0; | ||
| let gridY = (height / CELL_SIZE) | 0; | ||
| const random = seedrandom(seed); | ||
|
|
||
| let grid = Array(gridY) | ||
| .fill(0) | ||
| .map(() => | ||
| Array(gridX) | ||
| .fill(0) | ||
| .map(() => (Math.random() > SEED_THRESHOLD ? 1 : 0)) | ||
| return new GolApp( | ||
| { | ||
| view, | ||
| resizeTo: view.parentElement, | ||
| antialias: true, | ||
| autoDensity: true, | ||
| resolution: 2, | ||
| autoStart, | ||
| }, | ||
| { ...opts, random } | ||
| ); | ||
|
|
||
| let graphics = grid.map((row, y) => | ||
| row.map((_, x) => { | ||
| let point = new PIXI.Graphics(); | ||
| point.interactive = true; | ||
| point.x = x * CELL_SIZE; | ||
| point.y = y * CELL_SIZE; | ||
| point.alpha = !reducedMotion ? 0 : grid[y][x]; | ||
| point.alphaDelta = grid[y][x] == 1 ? ALPHA_DELTA : -ALPHA_DELTA; | ||
| point.beginFill(0xffffff); | ||
| point.drawCircle(CELL_SIZE / 2, CELL_SIZE / 2, (CELL_SIZE - 2) / 2); | ||
| app.stage.addChild(point); | ||
| return point; | ||
| }) | ||
| ); | ||
|
|
||
| const drawGeneration = (delta) => { | ||
| for (let y = 0; y < grid.length; y++) { | ||
| for (let x = 0; x < grid[0].length; x++) { | ||
| let point = graphics[y][x]; | ||
| point.alpha = Math.max( | ||
| 0, | ||
| Math.min(1, point.alpha + point.alphaDelta * delta) | ||
| ); | ||
| } | ||
| } | ||
| }; | ||
|
|
||
| const updateAlphaDelta = () => { | ||
| for (let y = 0; y < grid.length; y++) { | ||
| for (let x = 0; x < grid[0].length; x++) { | ||
| let point = graphics[y][x]; | ||
| point.alphaDelta = grid[y][x] == 1 ? ALPHA_DELTA : -ALPHA_DELTA; | ||
| } | ||
| } | ||
| const options = { | ||
| view: document.getElementById("gameCanvas"), | ||
| ...DEFAULT_OPTIONS, | ||
| ...qs.parse(window.location.search, { ignoreQueryPrefix: true }), | ||
| }; | ||
|
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||
| let secondsPassed = 0; | ||
| let nextSecond = 1; | ||
| let app = createApp(options); | ||
|
|
||
| drawGeneration(0); | ||
| updateAlphaDelta(); | ||
| let timeInMs = 0; | ||
| document | ||
| .querySelector("#jumbotron-gol-control-shuffle") | ||
| .addEventListener("click", (e) => { | ||
| e.preventDefault(); | ||
| const wasStarted = app.started; | ||
| app.destroy(); | ||
|
|
||
| if(reducedMotion) app.render(); | ||
| const oldCanvas = document.querySelector("#gameCanvas"); | ||
| const newCanvas = oldCanvas.cloneNode(); | ||
| oldCanvas.replaceWith(newCanvas); | ||
|
|
||
| // Listen for frame updates | ||
| app.ticker.add((delta) => { | ||
| timeInMs += app.ticker.elapsedMS; | ||
| if (timeInMs > TICK_EVERY_MS) { | ||
| timeInMs = timeInMs % TICK_EVERY_MS; | ||
| grid = computeNextGeneration(grid); | ||
| updateAlphaDelta(); | ||
| } | ||
| drawGeneration(delta); | ||
| }); | ||
| setTimeout(() => { | ||
| app = createApp( | ||
| { | ||
| ...options, | ||
| view: newCanvas, | ||
| autoStart: wasStarted, | ||
| seed: (Math.random() * 10000) | 0, | ||
| }, | ||
| { tickEveryMs: app.tickEveryMs, alphaDelta: app.alphaDelta } | ||
| ); | ||
| }, 0); | ||
| }); | ||
|
|
||
| document | ||
| .querySelector("#jumbotron-gol-control-speed-slower") | ||
| .addEventListener("click", (e) => { | ||
| e.preventDefault(); | ||
| app.slower(); | ||
| }); | ||
| document | ||
| .querySelector("#jumbotron-gol-control-speed-reset") | ||
| .addEventListener("click", (e) => { | ||
| e.preventDefault(); | ||
| app.resetSpeed(); | ||
| }); | ||
| document | ||
| .querySelector("#jumbotron-gol-control-speed-faster") | ||
| .addEventListener("click", (e) => { | ||
| e.preventDefault(); | ||
| app.faster(); | ||
| }); | ||
|
|
||
| document | ||
| .querySelector( | ||
| `#jumbotron-gol-control-pause ${!app.started ? ".fa-pause" : ".fa-play"}` | ||
| ) | ||
| .classList.add("d-none"); | ||
| document | ||
| .querySelector("#jumbotron-gol-control-pause") | ||
| .addEventListener("click", (e) => { | ||
| e.preventDefault(); | ||
| const shouldStart = !app.started; | ||
| if (shouldStart) { | ||
| app.start(); | ||
| } else { | ||
| app.stop(); | ||
| } | ||
| document | ||
| .querySelector("#jumbotron-gol-control-pause [data-icon=pause]") | ||
| .classList.toggle("d-none"); | ||
| document | ||
| .querySelector("#jumbotron-gol-control-pause [data-icon=play]") | ||
| .classList.toggle("d-none"); | ||
| }); |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,129 @@ | ||
| import * as PIXI from "pixi.js"; | ||
| import { computeNextGeneration } from "./computeNextGeneration"; | ||
|
|
||
| const CELL_SIZE = 20; | ||
| const TICK_EVERY_MS = 3000; | ||
| const ALPHA_DELTA = 0.01; | ||
| const SEED_THRESHOLD = 0.7; | ||
|
|
||
| const GRID_X = 100; | ||
| const GRID_Y = 100; | ||
|
|
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| export class GolApp { | ||
| constructor(pixiOpts, { random, tickEveryMs = TICK_EVERY_MS, alphaDelta = ALPHA_DELTA }) { | ||
| this.tickEveryMs = tickEveryMs; | ||
| this.alphaDelta = alphaDelta; | ||
|
|
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| this.pixiApp = new PIXI.Application(pixiOpts); | ||
|
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| this.grid = Array(GRID_Y) | ||
| .fill(0) | ||
| .map(() => | ||
| Array(GRID_X) | ||
| .fill(0) | ||
| .map(() => (random() > SEED_THRESHOLD ? 1 : 0)) | ||
| ); | ||
|
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| let { width, height } = this.pixiApp.screen; | ||
|
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| let gridX = Math.min(GRID_X, (width / CELL_SIZE) | 0); | ||
| let gridY = Math.min(GRID_Y, (height / CELL_SIZE) | 0); | ||
|
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| this.secondsPassed = 0; | ||
| this.nextSecond = 1; | ||
|
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| this.graphics = Array(gridY) | ||
| .fill(0) | ||
| .map((_, y) => | ||
| Array(gridX) | ||
| .fill(0) | ||
| .map((_, x) => { | ||
| let point = new PIXI.Graphics(); | ||
| point.interactive = true; | ||
| point.x = x * CELL_SIZE; | ||
| point.y = y * CELL_SIZE; | ||
| point.alpha = pixiOpts.autoStart ? 0 : this.grid[y][x]; | ||
| point.alphaDelta = | ||
| this.grid[y][x] == 1 ? this.alphaDelta : -this.alphaDelta; | ||
| point.beginFill(0xffffff); | ||
| point.drawCircle(CELL_SIZE / 2, CELL_SIZE / 2, (CELL_SIZE - 2) / 2); | ||
| this.pixiApp.stage.addChild(point); | ||
| return point; | ||
| }) | ||
| ); | ||
|
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| this.drawGeneration(0); | ||
| this.updateAlphaDelta(); | ||
|
|
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| let timeInMs = 0; | ||
|
|
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| if (!pixiOpts.autoStart) this.pixiApp.render(); | ||
|
|
||
| // Listen for frame updates | ||
| this.pixiApp.ticker.add((delta) => { | ||
| timeInMs += this.pixiApp.ticker.elapsedMS; | ||
| if (timeInMs > this.tickEveryMs) { | ||
| timeInMs = timeInMs % this.tickEveryMs; | ||
| this.grid = computeNextGeneration(this.grid); | ||
| this.updateAlphaDelta(); | ||
| } | ||
| this.drawGeneration(delta); | ||
| }); | ||
| } | ||
|
|
||
| faster() { | ||
| this.tickEveryMs /= 2; | ||
| this.alphaDelta *= 2; | ||
| } | ||
|
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| slower() { | ||
| this.tickEveryMs *= 2; | ||
| this.alphaDelta /= 2; | ||
| } | ||
|
|
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| resetSpeed() { | ||
| this.tickEveryMs = TICK_EVERY_MS; | ||
| this.alphaDelta = ALPHA_DELTA; | ||
| } | ||
|
|
||
| start() { | ||
| return this.pixiApp.start(); | ||
| } | ||
|
|
||
| stop() { | ||
| return this.pixiApp.stop(); | ||
| } | ||
|
|
||
| get started() { | ||
| return this.pixiApp?.ticker?.started; | ||
| } | ||
|
|
||
| render() { | ||
| return this.pixiApp.render(); | ||
| } | ||
|
|
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| destroy() { | ||
| return this.pixiApp.destroy(); | ||
| } | ||
|
|
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| drawGeneration(delta) { | ||
| for (let y = 0; y < this.graphics.length; y++) { | ||
| for (let x = 0; x < this.graphics[0].length; x++) { | ||
| let point = this.graphics[y][x]; | ||
| point.alpha = Math.max( | ||
| 0, | ||
| Math.min(1, point.alpha + point.alphaDelta * delta) | ||
| ); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| updateAlphaDelta() { | ||
| for (let y = 0; y < this.graphics.length; y++) { | ||
| for (let x = 0; x < this.graphics[0].length; x++) { | ||
| let point = this.graphics[y][x]; | ||
| point.alphaDelta = this.grid[y][x] == 1 ? this.alphaDelta : -this.alphaDelta; | ||
| } | ||
| } | ||
| } | ||
| } |
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