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about.html
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<!DOCTYPE html>
<html lang="en" >
<head>
<meta charset="UTF-8">
<title>祝小郭2025新年快乐！万事如意！</title>
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<meta name="mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="theme-color" content="#000000">
<link rel="shortcut icon" type="image/png" href="https://s3-us-west-2.amazonaws.com/s.cdpn.io/329180/firework-burst-icon.png">
<link rel="icon" type="image/png" href="https://s3-us-west-2.amazonaws.com/s.cdpn.io/329180/firework-burst-icon.png">
<link rel="apple-touch-icon-precomposed" href="https://s3-us-west-2.amazonaws.com/s.cdpn.io/329180/firework-burst-icon.png">
<meta name="msapplication-TileColor" content="#000000">
<meta name="msapplication-TileImage" content="https://s3-us-west-2.amazonaws.com/s.cdpn.io/329180/firework-burst-icon.png">
<link href="https://fonts.googleapis.com/css?family=Russo+One" rel="stylesheet"><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/meyer-reset/2.0/reset.min.css">
<link rel="stylesheet" href="./style.css">
<style>
* {
position: relative;
box-sizing: border-box;
}
html,
body {
height: 100%;
}
html {
background-color: #000;
}
body {
overflow: hidden;
color: rgba(255, 255, 255, 0.5);
font-family: "Russo One", arial, sans-serif;
line-height: 1.25;
letter-spacing: 0.06em;
}
.hide {
opacity: 0;
visibility: hidden;
}
.remove {
display: none;
}
.blur {
filter: blur(12px);
}
.container {
height: 100%;
display: flex;
justify-content: center;
align-items: center;
}
#loading-init {
width: 100%;
align-self: center;
text-align: center;
font-size: 2em;
}
#stage-container {
overflow: hidden;
box-sizing: initial;
border: 1px solid #222;
margin: -1px;
}
#canvas-container {
width: 100%;
height: 100%;
transition: filter 0.3s;
}
#canvas-container canvas {
position: absolute;
mix-blend-mode: lighten;
}
#controls {
position: absolute;
top: 0;
width: 100%;
padding-bottom: 50px;
display: flex;
justify-content: space-between;
transition: opacity 0.3s, visibility 0.3s;
}
@media (min-width: 800px) {
#controls {
visibility: visible;
}
#controls.hide:hover {
opacity: 1;
}
}
#menu {
display: flex;
flex-direction: column;
justify-content: center;
align-items: center;
position: absolute;
top: 0;
bottom: 0;
width: 100%;
background-color: rgba(0, 0, 0, 0.42);
transition: opacity 0.3s, visibility 0.3s;
}
#menu__header {
padding: 20px 0 44px;
font-size: 2em;
text-transform: uppercase;
}
#menu form {
width: 240px;
padding: 0 20px;
overflow: auto;
}
#menu .form-option {
margin: 20px 0;
}
#menu .form-option label {
text-transform: uppercase;
}
#menu .form-option--select label {
display: block;
margin-bottom: 6px;
}
#menu .form-option--select select {
display: block;
width: 100%;
height: 30px;
font-size: 1rem;
font-family: "Russo One", arial, sans-serif;
color: rgba(255, 255, 255, 0.5);
letter-spacing: 0.06em;
background-color: transparent;
border: 1px solid rgba(255, 255, 255, 0.5);
}
#menu .form-option--select select option {
background-color: black;
}
#menu .form-option--checkbox label {
display: flex;
align-items: center;
transition: opacity 0.3s;
-webkit-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
user-select: none;
}
#menu .form-option--checkbox input {
display: block;
width: 20px;
height: 20px;
margin-right: 8px;
opacity: 0.5;
}
@media (max-width: 800px) {
#menu .form-option select, #menu .form-option input {
outline: none;
}
}
#close-menu-btn {
position: absolute;
top: 0;
right: 0;
}
.btn {
opacity: 0.16;
width: 44px;
height: 44px;
display: flex;
-webkit-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
user-select: none;
cursor: default;
transition: opacity 0.3s;
}
.btn--bright {
opacity: 0.5;
}
@media (min-width: 800px) {
.btn:hover {
opacity: 0.32;
}
.btn--bright:hover {
opacity: 0.75;
}
}
.btn svg {
display: block;
margin: auto;
}
</style>
</head>
<body>
<!-- partial:index.partial.html -->
<!-- SVG Spritesheet -->
<div style="height: 0; width: 0; position: absolute; visibility: hidden;">
<svg xmlns="http://www.w3.org/2000/svg">
<symbol id="icon-play" viewBox="0 0 24 24">
<path d="M8 5v14l11-7z"/>
</symbol>
<symbol id="icon-pause" viewBox="0 0 24 24">
<path d="M6 19h4V5H6v14zm8-14v14h4V5h-4z"/>
</symbol>
<symbol id="icon-close" viewBox="0 0 24 24">
<path d="M19 6.41L17.59 5 12 10.59 6.41 5 5 6.41 10.59 12 5 17.59 6.41 19 12 13.41 17.59 19 19 17.59 13.41 12z"/>
</symbol>
<symbol id="icon-settings" viewBox="0 0 24 24">
<path d="M19.43 12.98c.04-.32.07-.64.07-.98s-.03-.66-.07-.98l2.11-1.65c.19-.15.24-.42.12-.64l-2-3.46c-.12-.22-.39-.3-.61-.22l-2.49 1c-.52-.4-1.08-.73-1.69-.98l-.38-2.65C14.46 2.18 14.25 2 14 2h-4c-.25 0-.46.18-.49.42l-.38 2.65c-.61.25-1.17.59-1.69.98l-2.49-1c-.23-.09-.49 0-.61.22l-2 3.46c-.13.22-.07.49.12.64l2.11 1.65c-.04.32-.07.65-.07.98s.03.66.07.98l-2.11 1.65c-.19.15-.24.42-.12.64l2 3.46c.12.22.39.3.61.22l2.49-1c.52.4 1.08.73 1.69.98l.38 2.65c.03.24.24.42.49.42h4c.25 0 .46-.18.49-.42l.38-2.65c.61-.25 1.17-.59 1.69-.98l2.49 1c.23.09.49 0 .61-.22l2-3.46c.12-.22.07-.49-.12-.64l-2.11-1.65zM12 15.5c-1.93 0-3.5-1.57-3.5-3.5s1.57-3.5 3.5-3.5 3.5 1.57 3.5 3.5-1.57 3.5-3.5 3.5z"/>
</symbol>
<symbol id="icon-shutter-fast" viewBox="0 0 24 24">
<path d="M21 19V5c0-1.1-.9-2-2-2H5c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h14c1.1 0 2-.9 2-2zM8.5 13.5l2.5 3.01L14.5 12l4.5 6H5l3.5-4.5z"/>
</symbol>
<symbol id="icon-shutter-slow" viewBox="0 0 24 24">
<path d="M1 5h2v14H1zm4 0h2v14H5zm17 0H10c-.55 0-1 .45-1 1v12c0 .55.45 1 1 1h12c.55 0 1-.45 1-1V6c0-.55-.45-1-1-1zM11 17l2.5-3.15L15.29 16l2.5-3.22L21 17H11z"/>
</symbol>
</svg>
</div>
<!-- App -->
<div class="container">
<div id="loading-init">Loading...</div>
<div id="stage-container" class="remove">
<div id="canvas-container">
<canvas id="trails-canvas"></canvas>
<canvas id="main-canvas"></canvas>
</div>
<div id="controls">
<div id="pause-btn" class="btn">
<svg fill="white" width="24" height="24"><use href="#icon-pause"></use></svg>
</div>
<div id="shutter-btn" class="btn">
<svg fill="white" width="24" height="24"><use href="#icon-shutter-slow"></use></svg>
</div>
<div id="settings-btn" class="btn">
<svg fill="white" width="24" height="24"><use href="#icon-settings"></use></svg>
</div>
</div>
<div id="menu" class="hide">
<div id="close-menu-btn" class="btn btn--bright">
<svg fill="white" width="24" height="24"><use href="#icon-close"></use></svg>
</div>
<div id="menu__header">Settings</div>
<form>
<div class="form-option form-option--select">
<label>Shell Type</label>
<select id="shell-type"></select>
</div>
<div class="form-option form-option--select">
<label>Shell Size</label>
<select id="shell-size"></select>
</div>
<div class="form-option form-option--checkbox">
<label id="auto-launch-label"><input id="auto-launch" type="checkbox" /><span>Auto Fire</span></label>
</div>
<div class="form-option form-option--checkbox">
<label id="finale-mode-label"><input id="finale-mode" type="checkbox" /><span>Finale Mode</span></label>
</div>
<div class="form-option form-option--checkbox">
<label id="hide-controls-label"><input id="hide-controls" type="checkbox" /><span>Hide Controls</span></label>
</div>
</form>
</div>
</div>
</div>
<!-- partial -->
<script src='https://s3-us-west-2.amazonaws.com/s.cdpn.io/329180/fscreen%401.0.1.js'></script>
<script src='https://s3-us-west-2.amazonaws.com/s.cdpn.io/329180/Stage%400.1.4.js'></script>
<script src='https://s3-us-west-2.amazonaws.com/s.cdpn.io/329180/MyMath.js'></script>
<script>
'use strict';
console.clear();
const IS_MOBILE = window.innerWidth <= 640;
const IS_DESKTOP = window.innerWidth > 800;
const IS_HEADER = IS_DESKTOP && window.innerHeight < 300;
// 8K - can restrict this if needed
const MAX_WIDTH = 7680;
const MAX_HEIGHT = 4320;
const GRAVITY = 0.9; // Acceleration in px/s
let simSpeed = 1;
const COLOR = {
Red: '#ff0043',
Green: '#14fc56',
Blue: '#1e7fff',
Purple: '#e60aff',
Gold: '#ffae00',
White: '#ffffff'
};
// Special invisible color (not rendered, and therefore not in COLOR map)
const INVISIBLE = '_INVISIBLE_';
// Interactive state management
const store = {
_listeners: new Set(),
_dispatch() {
this._listeners.forEach(listener => listener(this.state))
},
state: {
paused: false,
longExposure: false,
menuOpen: false,
config: {
shell: 'Random',
size: IS_DESKTOP && !IS_HEADER ? '3' : '1',
autoLaunch: true,
finale: false,
hideControls: IS_HEADER
}
},
setState(nextState) {
this.state = Object.assign({}, this.state, nextState);
this._dispatch();
this.persist();
},
subscribe(listener) {
this._listeners.add(listener);
return () => this._listeners.remove(listener);
},
// Load / persist select state to localStorage
load() {
if (localStorage.getItem('schemaVersion') === '1') {
this.state.config.size = JSON.parse(localStorage.getItem('configSize'));
this.state.config.hideControls = JSON.parse(localStorage.getItem('hideControls'));
}
},
persist() {
localStorage.setItem('schemaVersion', '1');
localStorage.setItem('configSize', JSON.stringify(this.state.config.size));
localStorage.setItem('hideControls', JSON.stringify(this.state.config.hideControls));
}
};
if (!IS_HEADER) {
store.load();
}
// Actions
// ---------
function togglePause(toggle) {
if (typeof toggle === 'boolean') {
store.setState({ paused: toggle });
} else {
store.setState({ paused: !store.state.paused });
}
}
function toggleLongExposure(toggle) {
if (typeof toggle === 'boolean') {
store.setState({ longExposure: toggle });
} else {
store.setState({ longExposure: !store.state.longExposure });
}
}
function toggleMenu(toggle) {
if (typeof toggle === 'boolean') {
store.setState({ menuOpen: toggle });
} else {
store.setState({ menuOpen: !store.state.menuOpen });
}
}
function updateConfig(nextConfig) {
nextConfig = nextConfig || getConfigFromDOM();
store.setState({
config: Object.assign({}, store.state.config, nextConfig)
});
}
// Selectors
// -----------
const canInteract = () => !store.state.paused && !store.state.menuOpen;
const shellNameSelector = () => store.state.config.shell;
// Converts shell size to number.
const shellSizeSelector = () => +store.state.config.size;
const finaleSelector = () => store.state.config.finale;
// Render app UI / keep in sync with state
const appNodes = {
stageContainer: '#stage-container',
canvasContainer: '#canvas-container',
controls: '#controls',
menu: '#menu',
pauseBtn: '#pause-btn',
pauseBtnSVG: '#pause-btn use',
shutterBtn: '#shutter-btn',
shutterBtnSVG: '#shutter-btn use',
shellType: '#shell-type',
shellSize: '#shell-size',
autoLaunch: '#auto-launch',
autoLaunchLabel: '#auto-launch-label',
finaleMode: '#finale-mode',
finaleModeLabel: '#finale-mode-label',
hideControls: '#hide-controls',
hideControlsLabel: '#hide-controls-label'
};
// Convert appNodes selectors to dom nodes
Object.keys(appNodes).forEach(key => {
appNodes[key] = document.querySelector(appNodes[key]);
});
// Remove loading state
document.getElementById('loading-init').remove();
appNodes.stageContainer.classList.remove('remove');
// First render is called in init()
function renderApp(state) {
appNodes.pauseBtnSVG.setAttribute('href', `#icon-${state.paused ? 'play' : 'pause'}`);
appNodes.shutterBtnSVG.setAttribute('href', `#icon-shutter-${state.longExposure ? 'fast' : 'slow'}`);
appNodes.controls.classList.toggle('hide', state.menuOpen || state.config.hideControls);
appNodes.canvasContainer.classList.toggle('blur', state.menuOpen);
appNodes.menu.classList.toggle('hide', !state.menuOpen);
appNodes.finaleModeLabel.style.opacity = state.config.autoLaunch ? 1 : 0.32;
appNodes.shellType.value = state.config.shell;
appNodes.shellSize.value = state.config.size;
appNodes.autoLaunch.checked = state.config.autoLaunch;
appNodes.finaleMode.checked = state.config.finale;
appNodes.hideControls.checked = state.config.hideControls;
}
store.subscribe(renderApp);
function getConfigFromDOM() {
return {
shell: appNodes.shellType.value,
size: appNodes.shellSize.value,
autoLaunch: appNodes.autoLaunch.checked,
finale: appNodes.finaleMode.checked,
hideControls: appNodes.hideControls.checked
};
};
const updateConfigNoEvent = () => updateConfig();
appNodes.shellType.addEventListener('input', updateConfigNoEvent);
appNodes.shellSize.addEventListener('input', updateConfigNoEvent);
appNodes.autoLaunchLabel.addEventListener('click', () => setTimeout(updateConfig, 0));
appNodes.finaleModeLabel.addEventListener('click', () => setTimeout(updateConfig, 0));
appNodes.hideControlsLabel.addEventListener('click', () => setTimeout(updateConfig, 0));
// Constant derivations
const COLOR_NAMES = Object.keys(COLOR);
const COLOR_CODES = COLOR_NAMES.map(colorName => COLOR[colorName]);
// Invisible stars need an indentifier, even through they won't be rendered - physics still apply.
const COLOR_CODES_W_INVIS = [...COLOR_CODES, INVISIBLE];
// Tuples is a map keys by color codes (hex) with values of { r, g, b } tuples (still just objects).
const COLOR_TUPLES = {};
COLOR_CODES.forEach(hex => {
COLOR_TUPLES[hex] = {
r: parseInt(hex.substr(1, 2), 16),
g: parseInt(hex.substr(3, 2), 16),
b: parseInt(hex.substr(5, 2), 16),
};
});
// Get a random color.
function randomColorSimple() {
return COLOR_CODES[Math.random() * COLOR_CODES.length | 0];
}
// Get a random color, with some customization options available.
let lastColor;
function randomColor(options) {
const notSame = options && options.notSame;
const notColor = options && options.notColor;
const limitWhite = options && options.limitWhite;
let color = randomColorSimple();
// limit the amount of white chosen randomly
if (limitWhite && color === COLOR.White && Math.random() < 0.6) {
color = randomColorSimple();
}
if (notSame) {
while (color === lastColor) {
color = randomColorSimple();
}
}
else if (notColor) {
while (color === notColor) {
color = randomColorSimple();
}
}
lastColor = color;
return color;
}
function whiteOrGold() {
return Math.random() < 0.5 ? COLOR.Gold : COLOR.White;
}
const PI_2 = Math.PI * 2;
const PI_HALF = Math.PI * 0.5;
const trailsStage = new Stage('trails-canvas');
const mainStage = new Stage('main-canvas');
const stages = [
trailsStage,
mainStage
];
// Fill trails canvas with black to start.
trailsStage.ctx.fillStyle = '#000';
trailsStage.ctx.fillRect(0, 0, trailsStage.width, trailsStage.height);
// Fullscreen helpers, using Fscreen for prefixes
function requestFullscreen() {
if (fullscreenEnabled() && !isFullscreen()) {
fscreen.requestFullscreen(document.documentElement);
}
}
function fullscreenEnabled() {
return fscreen.fullscreenEnabled;
}
function isFullscreen() {
return !!fscreen.fullscreenElement;
}
// Shell helpers
function makePistilColor(shellColor) {
return (shellColor === COLOR.White || shellColor === COLOR.Gold) ? randomColor({ notColor: shellColor }) : whiteOrGold();
}
// Unique shell types
const crysanthemumShell = (size=1) => {
const glitter = Math.random() < 0.25;
const singleColor = Math.random() < 0.68;
const color = singleColor ? randomColor({ limitWhite: true }) : [randomColor(), randomColor({ notSame: true })];
const pistil = singleColor && Math.random() < 0.42;
const pistilColor = makePistilColor(color);
const streamers = !pistil && color !== COLOR.White && Math.random() < 0.42;
return {
size: 300 + size * 100,
starLife: 900 + size * 200,
starDensity: glitter ? 1.1 : 1.5,
color,
glitter: glitter ? 'light' : '',
glitterColor: whiteOrGold(),
pistil,
pistilColor,
streamers
};
};
const palmShell = (size=1) => ({
size: 250 + size * 75,
starDensity: 0.6,
starLife: 1800 + size * 200,
glitter: 'heavy'
});
const ringShell = (size=1) => {
const color = randomColor();
const pistil = Math.random() < 0.75;
return {
ring: true,
color,
size: 300 + size * 100,
starLife: 900 + size * 200,
starCount: 2.2 * PI_2 * (size+1),
pistil,
pistilColor: makePistilColor(color),
glitter: !pistil ? 'light' : '',
glitterColor: color === COLOR.Gold ? COLOR.Gold : COLOR.White
};
};
const crossetteShell = (size=1) => {
const color = randomColor({ limitWhite: true });
return {
size: 300 + size * 100,
starLife: 900 + size * 200,
starLifeVariation: 0.22,
color,
crossette: true,
pistil: Math.random() < 0.5,
pistilColor: makePistilColor(color)
};
};
const floralShell = (size=1) => ({
size: 300 + size * 120,
starDensity: 0.38,
starLife: 500 + size * 50,
starLifeVariation: 0.5,
color: Math.random() < 0.65 ? 'random' : (Math.random() < 0.15 ? randomColor() : [randomColor(), randomColor({ notSame: true })]),
floral: true
});
const fallingLeavesShell = (size=1) => ({
color: INVISIBLE,
size: 300 + size * 120,
starDensity: 0.38,
starLife: 500 + size * 50,
starLifeVariation: 0.5,
glitter: 'medium',
glitterColor: COLOR.Gold,
fallingLeaves: true
});
const willowShell = (size=1) => ({
size: 300 + size * 100,
starDensity: 0.7,
starLife: 3000 + size * 300,
glitter: 'willow',
glitterColor: COLOR.Gold,
color: INVISIBLE
});
const crackleShell = (size=1) => {
// favor gold
const color = Math.random() < 0.75 ? COLOR.Gold : randomColor();
return {
size: 380 + size * 75,
starDensity: 1,
starLife: 600 + size * 100,
starLifeVariation: 0.32,
glitter: 'light',
glitterColor: COLOR.Gold,
color,
crackle: true,
pistil: Math.random() < 0.65,
pistilColor: makePistilColor(color)
};
};
const horsetailShell = (size=1) => {
const color = randomColor();
return {
horsetail: true,
color,
size: 250 + size * 38,
starDensity: 0.85 + size * 0.1,
starLife: 2500 + size * 300,
glitter: 'medium',
glitterColor: Math.random() < 0.5 ? whiteOrGold() : color
};
};
function randomShellName() {
return Math.random() < 0.6 ? 'Crysanthemum' : shellNames[(Math.random() * (shellNames.length - 1) + 1) | 0 ];
}
function randomShell(size) {
return shellTypes[randomShellName()](size);
}
function shellFromConfig(size) {
return shellTypes[shellNameSelector()](size);
}
// Get a random shell, not including processing intensive varients
// Note this is only random when "Random" shell is selected in config.
// Also, this does not create the shell, only returns the factory function.
const fastShellBlacklist = ['Falling Leaves', 'Floral', 'Willow'];
function randomFastShell() {
const isRandom = shellNameSelector() === 'Random';
let shellName = isRandom ? randomShellName() : shellNameSelector();
if (isRandom) {
while (fastShellBlacklist.includes(shellName)) {
shellName = randomShellName();
}
}
return shellTypes[shellName];
}
const shellTypes = {
'Random': randomShell,
'Crackle': crackleShell,
'Crossette': crossetteShell,
'Crysanthemum': crysanthemumShell,
'Falling Leaves': fallingLeavesShell,
'Floral': floralShell,
'Horse Tail': horsetailShell,
'Palm': palmShell,
'Ring': ringShell,
'Willow': willowShell
};
const shellNames = Object.keys(shellTypes);
function init() {
// Populate dropdowns
// shell type
let options = '';
shellNames.forEach(opt => options += `<option value="${opt}">${opt}</option>`);
appNodes.shellType.innerHTML = options;
// shell size
options = '';
['3"', '5"', '6"', '8"', '12"'].forEach((opt, i) => options += `<option value="${i}">${opt}</option>`);
appNodes.shellSize.innerHTML = options;
// initial render
renderApp(store.state);
}
function fitShellPositionInBoundsH(position) {
const edge = 0.18;
return (1 - edge*2) * position + edge;
}
function fitShellPositionInBoundsV(position) {
return position * 0.75;
}
function getRandomShellPositionH() {
return fitShellPositionInBoundsH(Math.random());
}
function getRandomShellPositionV() {
return fitShellPositionInBoundsV(Math.random());
}
function getRandomShellSize() {
const baseSize = shellSizeSelector();
const maxVariance = Math.min(2.5, baseSize);
const variance = Math.random() * maxVariance;
const size = baseSize - variance;
const height = maxVariance === 0 ? Math.random() : 1 - (variance / maxVariance);
const centerOffset = Math.random() * (1 - height * 0.65) * 0.5;
const x = Math.random() < 0.5 ? 0.5 - centerOffset : 0.5 + centerOffset;
return {
size,
x: fitShellPositionInBoundsH(x),
height: fitShellPositionInBoundsV(height)
};
}
// Launches a shell from a user pointer event, based on state.config
function launchShellFromConfig(event) {
const shell = new Shell(shellFromConfig(shellSizeSelector()));
const w = mainStage.width;
const h = mainStage.height;
shell.launch(
event ? event.x / w : getRandomShellPositionH(),
event ? 1 - event.y / h : getRandomShellPositionV()
);
}
// Sequences
// -----------
function seqRandomShell() {
const size = getRandomShellSize();
const shell = new Shell(shellFromConfig(size.size));
shell.launch(size.x, size.height);
let extraDelay = shell.starLife;
if (shell.fallingLeaves) {
extraDelay = 4000;
}
return 900 + Math.random() * 600 + extraDelay;
}
function seqTwoRandom() {
const size1 = getRandomShellSize();
const size2 = getRandomShellSize();
const shell1 = new Shell(shellFromConfig(size1.size));
const shell2 = new Shell(shellFromConfig(size2.size));
const leftOffset = Math.random() * 0.2 - 0.1;
const rightOffset = Math.random() * 0.2 - 0.1;
shell1.launch(0.3 + leftOffset, size1.height);
shell2.launch(0.7 + rightOffset, size2.height);
let extraDelay = Math.max(shell1.starLife, shell2.starLife);
if (shell1.fallingLeaves || shell2.fallingLeaves) {
extraDelay = 4000;
}
return 900 + Math.random() * 600 + extraDelay;
}
function seqTriple() {
const shellType = randomFastShell();
const baseSize = shellSizeSelector();
const smallSize = Math.max(0, baseSize - 1.25);
const offset = Math.random() * 0.08 - 0.04;
const shell1 = new Shell(shellType(baseSize));
shell1.launch(0.5 + offset, 0.7);
const leftDelay = 1000 + Math.random() * 400;
const rightDelay = 1000 + Math.random() * 400;
setTimeout(() => {
const offset = Math.random() * 0.08 - 0.04;
const shell2 = new Shell(shellType(smallSize));
shell2.launch(0.2 + offset, 0.1);
}, leftDelay);
setTimeout(() => {
const offset = Math.random() * 0.08 - 0.04;
const shell3 = new Shell(shellType(smallSize));
shell3.launch(0.8 + offset, 0.1);
}, rightDelay);
return 4000;
}
function seqSmallBarrage() {
seqSmallBarrage.lastCalled = Date.now();
const barrageCount = IS_DESKTOP ? 11 : 5;
const shellSize = Math.max(0, shellSizeSelector() - 2);
const useCrysanthemum = Math.random() < 0.7;
// (cos(x*5π+0.5π)+1)/2 is a custom wave bounded by 0 and 1 used to set varying launch heights
function launchShell(x) {
const isRandom = shellNameSelector() === 'Random';
let shellType = isRandom ? (useCrysanthemum ? crysanthemumShell : randomFastShell()) : shellTypes[shellNameSelector()];
const shell = new Shell(shellType(shellSize));
const height = (Math.cos(x*5*Math.PI + PI_HALF) + 1) / 2;
shell.launch(x, height * 0.75);
}
let count = 0;
let delay = 0;
while(count < barrageCount) {
if (count === 0) {
launchShell(0.5)
count += 1;
}
else {
const offset = (count + 1) / barrageCount / 2;
setTimeout(() => {
launchShell(0.5 + offset);
launchShell(0.5 - offset);
}, delay);
count += 2;
}
delay += 200;
}
return 3400 + barrageCount * 120;
}
seqSmallBarrage.cooldown = 15000;
seqSmallBarrage.lastCalled = Date.now();
const sequences = [
seqRandomShell,
seqTwoRandom,
seqTriple,
seqSmallBarrage
];
let isFirstSeq = true;
const finaleCount = 32;
let currentFinaleCount = 0;
function startSequence() {
if (isFirstSeq) {
isFirstSeq = false;
const shell = new Shell(crysanthemumShell(shellSizeSelector()));
shell.launch(0.5, 0.5);
return 2400;
}
if (finaleSelector()) {
seqRandomShell();
if (currentFinaleCount < finaleCount) {
currentFinaleCount++;
return 170;
}
else {
currentFinaleCount = 0;
return 6000;
}
}
const rand = Math.random();
if (rand < 0.2 && Date.now() - seqSmallBarrage.lastCalled > seqSmallBarrage.cooldown) {
return seqSmallBarrage();
}
if (rand < 0.6) {
return seqRandomShell();
}
else if (rand < 0.8) {
return seqTwoRandom();
}
else if (rand < 1) {
return seqTriple();
}
}
let activePointerCount = 0;
let isUpdatingSpeed = false;
function handlePointerStart(event) {
activePointerCount++;
const btnSize = 44;
if (event.y < btnSize) {
if (event.x < btnSize) {
togglePause();
return;
}
if (event.x > mainStage.width/2 - btnSize/2 && event.x < mainStage.width/2 + btnSize/2) {
toggleLongExposure();
return;
}
if (event.x > mainStage.width - btnSize) {
toggleMenu();
return;
}
}
if (!canInteract()) return;
if (updateSpeedFromEvent(event)) {
isUpdatingSpeed = true;
}
else if (event.onCanvas) {
launchShellFromConfig(event);
}
}
function handlePointerEnd(event) {
activePointerCount--;
isUpdatingSpeed = false;
}
function handlePointerMove(event) {
if (!canInteract()) return;
if (isUpdatingSpeed) {
updateSpeedFromEvent(event);
}
}
function handleKeydown(event) {
// P
if (event.keyCode === 80) {
togglePause();
}
// O
else if (event.keyCode === 79) {
toggleMenu();
}
// Esc
else if (event.keyCode === 27) {
toggleMenu(false);
}
}
mainStage.addEventListener('pointerstart', handlePointerStart);
mainStage.addEventListener('pointerend', handlePointerEnd);
mainStage.addEventListener('pointermove', handlePointerMove);
window.addEventListener('keydown', handleKeydown);
// Try to go fullscreen upon a touch
window.addEventListener('touchend', (event) => !IS_DESKTOP && requestFullscreen());
function handleResize() {
const w = window.innerWidth;
const h = window.innerHeight;
// Try to adopt screen size, heeding maximum sizes specified
const containerW = Math.min(w, MAX_WIDTH);
// On small screens, use full device height