remove christmas button
add pixel-bursts server side
This commit is contained in:
parent
39095154cf
commit
277568fc9c
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@ -20,7 +20,6 @@ import Menu from './Menu';
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import UI from './UI';
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import ExpandMenuButton from './ExpandMenuButton';
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import ModalRoot from './ModalRoot';
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import ChristmasButton from './ChristmasButton';
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const App = () => (
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<div>
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@ -36,7 +35,6 @@ const App = () => (
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<ExpandMenuButton />
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<UI />
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<ModalRoot />
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<ChristmasButton />
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</IconContext.Provider>
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</div>
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);
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@ -1,55 +0,0 @@
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/**
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*
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* @flow
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*/
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import React, { useState } from 'react';
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import { GiPineTree } from 'react-icons/gi';
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import SnowStorm from '../ui/snow';
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const videoIds = [
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'-YUH8Xfz-jg',
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'yXQViqx6GMY',
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'is4NQkUN3AI',
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'xjLTDaCUYuQ',
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];
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const snowStorm = new SnowStorm(window, document);
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const ChristmasButton = () => {
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const [playing, setPlaying] = useState(false);
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const prot = window.location.protocol;
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const video = videoIds[Math.floor(Math.random() * videoIds.length)];
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const url = `${prot}//www.youtube.com/embed/${video}?autoplay=1&loop=1`;
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return (
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<div
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id="minecrafttpbutton"
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className="actionbuttons"
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role="button"
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tabIndex={-1}
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onClick={() => {
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setPlaying(!playing);
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snowStorm.toggleSnow();
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}}
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style={{
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boxShadow: (playing)
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? '0 0 9px 6px rgba(0, 189, 47, 0.8)'
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: '0 0 9px 6px rgba(189, 0, 0, 0.8)',
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}}
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>
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<GiPineTree />
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{(playing) && (
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<embed
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height="0"
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width="0"
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src={url}
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/>
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)}
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</div>
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);
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};
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export default ChristmasButton;
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68
src/core/PixelCache.js
Normal file
68
src/core/PixelCache.js
Normal file
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@ -0,0 +1,68 @@
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/*
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* Caching pixels for a few ms before sending them
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* in bursts per chunk
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* @flow
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*/
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import webSockets from '../socket/websockets';
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class PixelCache {
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PXL_CACHE: Map<number, Buffer>;
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constructor() {
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this.PXL_CACHE = new Map();
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this.flushCache = this.flushCache.bind(this);
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}
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/*
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* append pixel to cache
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* @param canvasId canvas id
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* @param i Chunk coordinates
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* @param j Chunk coordinates
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* @param offset Offset of pixel within chunk
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* @param color color index of pixel
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*/
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append(
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canvasId: number,
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color: number,
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i: number,
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j: number,
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offset: number,
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) {
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const { PXL_CACHE } = this;
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const chunkCanvasId = (canvasId << 16) | (i << 8) | j;
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const pxls = PXL_CACHE.get(chunkCanvasId);
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const newpxl = Buffer.allocUnsafe(4);
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newpxl.writeUInt8(offset >>> 16, 0);
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newpxl.writeUInt16BE(offset & 0x00FFFF, 1);
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newpxl.writeUInt8(color, 3);
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if (typeof pxls === 'undefined') {
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PXL_CACHE.set(chunkCanvasId, newpxl);
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} else {
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PXL_CACHE.set(
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chunkCanvasId,
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Buffer.concat([pxls, newpxl]),
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);
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}
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}
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flushCache() {
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const { PXL_CACHE: cache } = this;
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this.PXL_CACHE = new Map();
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cache.forEach((pxls, chunkCanvasId) => {
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const canvasId = chunkCanvasId & 0xFF0000 >> 16;
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const chunkId = chunkCanvasId & 0x00FFFF;
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webSockets.broadcastPixels(canvasId, chunkId, pxls);
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});
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}
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}
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const pixelCache = new PixelCache();
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// send pixels from cache to websockets every 20ms
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setInterval(pixelCache.flushCache, 20);
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export default pixelCache;
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@ -1,16 +0,0 @@
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/* @flow */
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class Player {
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wait: ?number; // date
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constructor() {
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this.wait = null;
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}
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setWait(wait) {
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this.wait = wait;
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}
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}
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export default Player;
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@ -178,23 +178,25 @@ class Void extends WebSocketEvents {
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const {
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i: pi,
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j: pj,
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offset: off,
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color,
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pixels,
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} = PixelUpdate.hydrate(buffer);
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if (color <= 2 || color === 25) {
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const { i, j } = this;
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// 3x3 chunk area (this is hardcoded on multiple places)
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if (pi >= i - 1 && pi <= i + 1 && pj >= j - 1 && pj <= j + 1) {
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const uOff = (pi - i + 1) * TILE_SIZE;
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const vOff = (pj - j + 1) * TILE_SIZE;
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const x = uOff + off % TILE_SIZE;
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const y = vOff + Math.floor(off / TILE_SIZE);
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if (this.isSet(x, y, true)) {
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this.pixelStack.push([x, y]);
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} else {
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this.userArea[x + y * TILE_SIZE * 3] = color;
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const { i, j } = this;
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// 3x3 chunk area (this is hardcoded on multiple places)
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if (pi >= i - 1 && pi <= i + 1 && pj >= j - 1 && pj <= j + 1) {
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pixels.forEach((pxl) => {
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const [off, color] = pxl;
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if (color <= 2 || color === 25) {
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const uOff = (pi - i + 1) * TILE_SIZE;
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const vOff = (pj - j + 1) * TILE_SIZE;
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const x = uOff + off % TILE_SIZE;
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const y = vOff + Math.floor(off / TILE_SIZE);
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if (this.isSet(x, y, true)) {
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this.pixelStack.push([x, y]);
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} else {
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this.userArea[x + y * TILE_SIZE * 3] = color;
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}
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}
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}
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});
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}
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}
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}
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144
src/core/draw.js
144
src/core/draw.js
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@ -36,7 +36,6 @@ import { THREE_CANVAS_HEIGHT, THREE_TILE_SIZE, TILE_SIZE } from './constants';
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export async function drawByOffsets(
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user: User,
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canvasId: number,
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color: ColorIndex,
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i: number,
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j: number,
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pixels: Array,
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@ -44,6 +43,7 @@ export async function drawByOffsets(
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let wait = 0;
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let coolDown = 0;
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let retCode = 0;
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let pxlCnt = 0;
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const canvas = canvases[canvasId];
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if (!canvas) {
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@ -54,9 +54,11 @@ export async function drawByOffsets(
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retCode: 1,
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};
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}
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const { size: canvasSize, v: is3d } = canvas;
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const { size: canvasSize, v: is3d } = canvas;
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try {
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wait = await user.getWait(canvasId);
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const tileSize = (is3d) ? THREE_TILE_SIZE : TILE_SIZE;
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/*
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* canvas/chunk validation
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@ -82,72 +84,82 @@ export async function drawByOffsets(
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}
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const isAdmin = (user.userlvl === 1);
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/*
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* TODO benchmark if requesting by pixel or chunk
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* is better
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*/
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const chunk = await RedisCanvas.getChunk(canvasId, i, j);
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const setColor = await RedisCanvas.getPixelByOffset(canvasId, i, j, offset);
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/*
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* pixel validation
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*/
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const maxSize = (is3d) ? tileSize * tileSize * THREE_CANVAS_HEIGHT
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: tileSize * tileSize;
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if (offset >= maxSize) {
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// z out of bounds or weird stuff
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throw new Error(4);
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}
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if (color >= canvas.colors.length
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|| (color < canvas.cli && !(canvas.v && color === 0))
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) {
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// color out of bounds
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throw new Error(5);
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}
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if (setColor & 0x80
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/* 3D Canvas Minecraft Avatars */
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// && x >= 96 && x <= 128 && z >= 35 && z <= 100
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// 96 - 128 on x
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// 32 - 128 on z
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|| (canvas.v && i === 19 && j >= 17 && j < 20 && !isAdmin)
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) {
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// protected pixel
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throw new Error(8);
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}
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coolDown = (setColor & 0x3F) < canvas.cli ? canvas.bcd : canvas.pcd;
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if (isAdmin) {
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coolDown = 0.0;
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} else if (rpgEvent.success) {
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let coolDownFactor = 1;
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if (rpgEvent.success) {
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if (rpgEvent.success === 1) {
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// if HOURLY_EVENT got won
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coolDown /= 2;
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// if hourly event got won
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coolDownFactor = 0.5;
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} else {
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// if HOURLY_EVENT got lost
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coolDown *= 2;
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// if hourly event got lost
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coolDownFactor = 2;
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}
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}
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const now = Date.now();
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wait = await user.getWait(canvasId);
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if (!wait) wait = now;
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wait += coolDown;
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const waitLeft = wait - now;
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if (waitLeft > canvas.cds) {
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// cooldown stack used
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wait = waitLeft - coolDown;
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coolDown = canvas.cds - waitLeft;
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throw new Error(9);
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}
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/*
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* TODO benchmark if requesting by pixel or chunk is better
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*/
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setPixelByOffset(canvasId, color, i, j, offset);
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while (pixels.length) {
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const [offset, color] = pixels.pop();
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user.setWait(waitLeft, canvasId);
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if (canvas.ranked) {
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user.incrementPixelcount();
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const [x, y, z] = getPixelFromChunkOffset(i, j, offset, canvasSize, is3d);
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pixelLogger.info(
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`${user.ip} ${user.id} ${canvasId} ${x} ${y} ${z} ${color} ${retCode}`,
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);
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// eslint-disable-next-line no-await-in-loop
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const setColor = await RedisCanvas.getPixelByOffset(
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canvasId,
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i, j,
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offset,
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);
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/*
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* pixel validation
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*/
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const maxSize = (is3d) ? tileSize * tileSize * THREE_CANVAS_HEIGHT
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: tileSize * tileSize;
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if (offset >= maxSize) {
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// z out of bounds or weird stuff
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throw new Error(4);
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}
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if (color >= canvas.colors.length
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|| (color < canvas.cli && !(canvas.v && color === 0))
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) {
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// color out of bounds
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throw new Error(5);
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}
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if (setColor & 0x80
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/* 3D Canvas Minecraft Avatars */
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// && x >= 96 && x <= 128 && z >= 35 && z <= 100
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// 96 - 128 on x
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// 32 - 128 on z
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|| (canvas.v && i === 19 && j >= 17 && j < 20 && !isAdmin)
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) {
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// protected pixel
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throw new Error(8);
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}
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coolDown = (setColor & 0x3F) < canvas.cli ? canvas.bcd : canvas.pcd;
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if (isAdmin) {
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coolDown = 0.0;
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} else {
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coolDown *= coolDownFactor;
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}
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wait += coolDown;
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if (wait > canvas.cds) {
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// cooldown stack used
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coolDown = canvas.cds - wait;
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wait -= coolDown;
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throw new Error(9);
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}
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setPixelByOffset(canvasId, color, i, j, offset);
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pxlCnt += 1;
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}
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wait = waitLeft;
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} catch (e) {
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retCode = parseInt(e.message, 10);
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if (Number.isNaN(retCode)) {
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@ -155,9 +167,12 @@ export async function drawByOffsets(
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}
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}
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const [x, y, z] = getPixelFromChunkOffset(i, j, offset, canvasSize, is3d);
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// eslint-disable-next-line max-len
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pixelLogger.info(`${user.ip} ${user.id} ${canvasId} ${x} ${y} ${z} ${color} ${retCode}`);
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if (pxlCnt) {
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user.setWait(wait, canvasId);
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if (canvas.ranked) {
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user.incrementPixelcount(pxlCnt);
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}
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}
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return {
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wait,
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@ -387,7 +402,8 @@ export function drawSafeByCoords(
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export function drawSafeByOffsets(
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user: User,
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canvasId: number,
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color: ColorIndex,
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i: number,
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j: number,
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pixels: Array,
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): Promise<Object> {
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// can just check for one unique occurence,
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@ -1,14 +1,37 @@
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/* @flow */
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/*
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* Set pixels on canvas.
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* Pixels get collected in a cache for 5ms and sent to players at once.
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* @flow
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* */
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import RedisCanvas from '../data/models/RedisCanvas';
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import webSockets from '../socket/websockets';
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import {
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getChunkOfPixel,
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getOffsetOfPixel,
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} from './utils';
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import pixelCache from './PixelCache';
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// eslint-disable-next-line import/no-unresolved
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import canvases from './canvases.json';
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/**
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*
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* By Offset is prefered on server side
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* @param canvasId
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* @param i Chunk coordinates
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* @param j
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* @param offset Offset of pixel withing chunk
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*/
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export function setPixelByOffset(
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canvasId: number,
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color: ColorIndex,
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i: number,
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j: number,
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offset: number,
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) {
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RedisCanvas.setPixelInChunk(i, j, offset, color, canvasId);
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pixelCache.append(canvasId, color, i, j, offset);
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}
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/**
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*
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* @param canvasId
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@ -28,25 +51,5 @@ export function setPixelByCoords(
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const canvasSize = canvases[canvasId].size;
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const [i, j] = getChunkOfPixel(canvasSize, x, y, z);
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const offset = getOffsetOfPixel(canvasSize, x, y, z);
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RedisCanvas.setPixelInChunk(i, j, offset, color, canvasId);
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webSockets.broadcastPixel(canvasId, i, j, offset, color);
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}
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/**
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*
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* By Offset is prefered on server side
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* @param canvasId
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* @param i Chunk coordinates
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* @param j
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* @param offset Offset of pixel withing chunk
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*/
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export function setPixelByOffset(
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canvasId: number,
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color: ColorIndex,
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i: number,
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j: number,
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offset: number,
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) {
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RedisCanvas.setPixelInChunk(i, j, offset, color, canvasId);
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webSockets.broadcastPixel(canvasId, i, j, offset, color);
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setPixelByOffset(canvasId, color, i, j, offset);
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}
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|
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@ -12,7 +12,6 @@ import redis from '../redis';
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import logger from '../../core/logger';
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import Model from '../sequelize';
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import RegUser from './RegUser';
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import { getIPv6Subnet } from '../../utils/ip';
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import { ADMIN_IDS } from '../../core/config';
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@ -39,7 +38,6 @@ class User {
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this.blocked = [];
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this.userlvl = 0;
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this.ipSub = getIPv6Subnet(ip);
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this.wait = null;
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// following gets populated by passport
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this.regUser = null;
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}
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@ -130,13 +128,12 @@ class User {
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return (this.regUser) ? this.regUser.name : null;
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}
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async setWait(coolDown: number, canvasId: number): Promise<boolean> {
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if (!coolDown) return false;
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this.wait = Date.now() + coolDown;
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async setWait(wait: number, canvasId: number): Promise<boolean> {
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if (!wait) return false;
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// PX is milliseconds expire
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await redis.setAsync(`cd:${canvasId}:ip:${this.ipSub}`, '', 'PX', coolDown);
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await redis.setAsync(`cd:${canvasId}:ip:${this.ipSub}`, '', 'PX', wait);
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if (this.id != null) {
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await redis.setAsync(`cd:${canvasId}:id:${this.id}`, '', 'PX', coolDown);
|
||||
await redis.setAsync(`cd:${canvasId}:id:${this.id}`, '', 'PX', wait);
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
|
@ -151,23 +148,19 @@ class User {
|
|||
}
|
||||
logger.debug('ererer', ttl, typeof ttl);
|
||||
|
||||
|
||||
const wait = ttl < 0 ? null : Date.now() + ttl;
|
||||
this.wait = wait;
|
||||
const wait = ttl < 0 ? 0 : ttl;
|
||||
return wait;
|
||||
}
|
||||
|
||||
async incrementPixelcount(): Promise<boolean> {
|
||||
async incrementPixelcount(amount: number = 1): Promise<boolean> {
|
||||
const { id } = this;
|
||||
if (!id) return false;
|
||||
if (this.userlvl === 1) return false;
|
||||
try {
|
||||
await RegUser.update({
|
||||
totalPixels: Sequelize.literal('totalPixels + 1'),
|
||||
dailyTotalPixels: Sequelize.literal('dailyTotalPixels + 1'),
|
||||
}, {
|
||||
where: { id },
|
||||
});
|
||||
await this.regUser.increment(
|
||||
['totalPixels', 'dailyTotalPixels'],
|
||||
{ by: amount },
|
||||
);
|
||||
} catch (err) {
|
||||
return false;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -220,7 +220,7 @@ class APISocketServer extends WebSocketEvents {
|
|||
// get userinfo
|
||||
user.ip = ip;
|
||||
const wait = await user.getWait(0);
|
||||
const waitSeconds = (wait) ? (wait - Date.now()) / 1000 : null;
|
||||
const waitSeconds = (wait) ? wait / 1000 : null;
|
||||
const name = (user.id == null) ? null : user.regUser.name;
|
||||
ws.send(JSON.stringify([
|
||||
'mcme',
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
* @flow
|
||||
/* @flow
|
||||
*/
|
||||
|
||||
// allow the websocket to be noisy on the console
|
||||
|
|
|
|||
|
|
@ -22,7 +22,7 @@ import chatProvider, { ChatProvider } from '../core/ChatProvider';
|
|||
import authenticateClient from './verifyClient';
|
||||
import WebSocketEvents from './WebSocketEvents';
|
||||
import webSockets from './websockets';
|
||||
import { drawSafeByOffset } from '../core/draw';
|
||||
import { drawSafeByOffsets } from '../core/draw';
|
||||
import { needCaptcha } from '../utils/captcha';
|
||||
import { cheapDetector } from '../core/isProxy';
|
||||
|
||||
|
|
@ -385,18 +385,17 @@ class SocketServer extends WebSocketEvents {
|
|||
}
|
||||
// receive pixels here
|
||||
const {
|
||||
i, j, offset,
|
||||
color,
|
||||
i, j, pixels,
|
||||
} = PixelUpdate.hydrate(buffer);
|
||||
const {
|
||||
wait,
|
||||
coolDown,
|
||||
retCode,
|
||||
} = await drawSafeByOffset(
|
||||
} = await drawSafeByOffsets(
|
||||
ws.user,
|
||||
ws.canvasId,
|
||||
color,
|
||||
i, j, offset,
|
||||
i, j,
|
||||
pixels,
|
||||
);
|
||||
ws.send(PixelReturn.dehydrate(retCode, wait, coolDown));
|
||||
break;
|
||||
|
|
@ -408,8 +407,7 @@ class SocketServer extends WebSocketEvents {
|
|||
}
|
||||
ws.canvasId = canvasId;
|
||||
const wait = await ws.user.getWait(canvasId);
|
||||
const waitMs = (wait) ? wait - Date.now() : 0;
|
||||
ws.send(CoolDownPacket.dehydrate(waitMs));
|
||||
ws.send(CoolDownPacket.dehydrate(wait));
|
||||
break;
|
||||
}
|
||||
case RegisterChunk.OP_CODE: {
|
||||
|
|
|
|||
|
|
@ -2,12 +2,10 @@
|
|||
* Packet for sending and receiving pixels per chunk
|
||||
* Multiple pixels can be sent at once
|
||||
*
|
||||
* @flow
|
||||
* @flow
|
||||
*/
|
||||
|
||||
|
||||
import type { ColorIndex } from '../../core/Palette';
|
||||
|
||||
type PixelUpdatePacket = {
|
||||
x: number,
|
||||
y: number,
|
||||
|
|
@ -35,7 +33,7 @@ export default {
|
|||
const color = data.getUint8(off -= 1);
|
||||
const offsetL = data.getUint16(off -= 2);
|
||||
const offsetH = data.getUint8(off -= 1) << 16;
|
||||
const pixels.push([offsetH | offsetL, color]);
|
||||
pixels.push([offsetH | offsetL, color]);
|
||||
}
|
||||
return {
|
||||
i, j, pixels,
|
||||
|
|
@ -57,8 +55,8 @@ export default {
|
|||
* 1 byte color
|
||||
*/
|
||||
let cnt = 2;
|
||||
for (let i = 0; i < pixels.length; i += 1) {
|
||||
const [offset, color] = pixels[i];
|
||||
for (let p = 0; p < pixels.length; p += 1) {
|
||||
const [offset, color] = pixels[p];
|
||||
view.setUint8(cnt += 1, offset >>> 16);
|
||||
view.setUint16(cnt += 1, offset & 0x00FFFF);
|
||||
view.setUint8(cnt += 2, color);
|
||||
|
|
|
|||
|
|
@ -1,8 +1,6 @@
|
|||
/* @flow */
|
||||
|
||||
|
||||
import type { ColorIndex } from '../../core/Palette';
|
||||
|
||||
type PixelUpdatePacket = {
|
||||
x: number,
|
||||
y: number,
|
||||
|
|
@ -26,38 +24,29 @@ export default {
|
|||
*/
|
||||
const pixels = [];
|
||||
let off = data.length;
|
||||
while (off >= 3) {
|
||||
/*
|
||||
* limit the max amount of pixels that can be
|
||||
* receive to 500
|
||||
*/
|
||||
let pxlcnt = 0;
|
||||
while (off >= 3 && pxlcnt < 500) {
|
||||
const color = data.readUInt8(off -= 1);
|
||||
const offsetL = data.readUInt16BE(off -= 2);
|
||||
const offsetH = data.readUInt8(off -= 1) << 16;
|
||||
const pixels.push([offsetH | offsetL, color]);
|
||||
pixels.push([offsetH | offsetL, color]);
|
||||
pxlcnt += 1;
|
||||
}
|
||||
return {
|
||||
i, j, pixels,
|
||||
};
|
||||
},
|
||||
|
||||
dehydrate(i, j, pixels): Buffer {
|
||||
const buffer = Buffer.allocUnsafe(1 + 1 + 1 + pixels.length * 4);
|
||||
buffer.writeUInt8(OP_CODE, 0);
|
||||
/*
|
||||
* chunk coordinates
|
||||
*/
|
||||
buffer.writeUInt8(i, 1);
|
||||
buffer.writeUInt8(j, 2);
|
||||
/*
|
||||
* offset and color of every pixel
|
||||
* 3 bytes offset
|
||||
* 1 byte color
|
||||
*/
|
||||
let cnt = 2;
|
||||
for (let i = 0; i < pixels.length; i += 1) {
|
||||
const [offset, color] = pixels[i];
|
||||
buffer.writeUInt8(offset >>> 16, cnt += 1);
|
||||
buffer.writeUInt16BE(offset & 0x00FFFF, cnt += 1);
|
||||
buffer.writeUInt8(color, cnt += 2);
|
||||
}
|
||||
|
||||
return buffer;
|
||||
/*
|
||||
* @param chunkId id consisting of chunk coordinates
|
||||
* @param pixels Buffer with offset and color of one or more pixels
|
||||
*/
|
||||
dehydrate(chunkId, pixels): Buffer {
|
||||
const index = new Uint8Array([OP_CODE, chunkId >> 8, chunkId && 0xFF]);
|
||||
return Buffer.concat([index, pixels]);
|
||||
},
|
||||
};
|
||||
|
|
|
|||
|
|
@ -41,23 +41,18 @@ class WebSockets {
|
|||
|
||||
/*
|
||||
* broadcast pixel message via websocket
|
||||
* @param canvasIdent ident of canvas
|
||||
* @param i x coordinates of chunk
|
||||
* @param j y coordinates of chunk
|
||||
* @param offset offset of pixel within this chunk
|
||||
* @param color colorindex
|
||||
* @param canvasId ident of canvas
|
||||
* @param chunkid id consisting of i,j chunk coordinates
|
||||
* @param pxls buffer with offset and color of one or more pixels
|
||||
*/
|
||||
broadcastPixel(
|
||||
broadcastPixels(
|
||||
canvasId: number,
|
||||
i: number,
|
||||
j: number,
|
||||
offset: number,
|
||||
color: number,
|
||||
chunkId: number,
|
||||
pixels: Buffer,
|
||||
) {
|
||||
const chunkid = (i << 8) | j;
|
||||
const buffer = PixelUpdate.dehydrate(i, j, offset, color);
|
||||
const buffer = PixelUpdate.dehydrate(chunkId, pixels);
|
||||
this.listeners.forEach(
|
||||
(listener) => listener.broadcastPixelBuffer(canvasId, chunkid, buffer),
|
||||
(listener) => listener.broadcastPixelBuffer(canvasId, chunkId, buffer),
|
||||
);
|
||||
}
|
||||
|
||||
|
|
|
|||
670
src/ui/snow.js
670
src/ui/snow.js
|
|
@ -1,670 +0,0 @@
|
|||
/** @license
|
||||
* DHTML Snowstorm! JavaScript-based snow for web pages
|
||||
* Making it snow on the internets since 2003. You're welcome.
|
||||
* -----------------------------------------------------------
|
||||
* Version 1.44.20131215 (Previous rev: 1.44.20131208)
|
||||
* Copyright (c) 2007, Scott Schiller. All rights reserved.
|
||||
* Code provided under the BSD License
|
||||
* http://schillmania.com/projects/snowstorm/license.txt
|
||||
*/
|
||||
|
||||
/*jslint nomen: true, plusplus: true, sloppy: true, vars: true, white: true */
|
||||
/*global window, document, navigator, clearInterval, setInterval */
|
||||
|
||||
/* eslint-disable */
|
||||
|
||||
function SnowStorm(window, document) {
|
||||
|
||||
// --- common properties ---
|
||||
|
||||
this.autoStart = false; // Whether the snow should start automatically or not.
|
||||
this.flakesMax = 256; // Limit total amount of snow made (falling + sticking)
|
||||
this.flakesMaxActive = 128; // Limit amount of snow falling at once (less = lower CPU use)
|
||||
this.animationInterval = 33; // Theoretical "miliseconds per frame" measurement. 20 = fast + smooth, but high CPU use. 50 = more conservative, but slower
|
||||
this.useGPU = true; // Enable transform-based hardware acceleration, reduce CPU load.
|
||||
this.className = null; // CSS class name for further customization on snow elements
|
||||
this.excludeMobile = false; // Snow is likely to be bad news for mobile phones' CPUs (and batteries.) By default, be nice.
|
||||
this.flakeBottom = null; // Integer for Y axis snow limit, 0 or null for "full-screen" snow effect
|
||||
this.followMouse = true; // Snow movement can respond to the user's mouse
|
||||
this.snowColor = '#fff'; // Don't eat (or use?) yellow snow.
|
||||
this.snowCharacter = '•'; // • = bullet, · is square on some systems etc.
|
||||
this.snowStick = true; // Whether or not snow should "stick" at the bottom. When off, will never collect.
|
||||
this.targetElement = null; // element which snow will be appended to (null = document.body) - can be an element ID eg. 'myDiv', or a DOM node reference
|
||||
this.useMeltEffect = true; // When recycling fallen snow (or rarely, when falling), have it "melt" and fade out if browser supports it
|
||||
this.useTwinkleEffect = false; // Allow snow to randomly "flicker" in and out of view while falling
|
||||
this.usePositionFixed = false; // true = snow does not shift vertically when scrolling. May increase CPU load, disabled by default - if enabled, used only where supported
|
||||
this.usePixelPosition = false; // Whether to use pixel values for snow top/left vs. percentages. Auto-enabled if body is position:relative or targetElement is specified.
|
||||
|
||||
// --- less-used bits ---
|
||||
|
||||
this.freezeOnBlur = true; // Only snow when the window is in focus (foreground.) Saves CPU.
|
||||
this.flakeLeftOffset = 0; // Left margin/gutter space on edge of container (eg. browser window.) Bump up these values if seeing horizontal scrollbars.
|
||||
this.flakeRightOffset = 0; // Right margin/gutter space on edge of container
|
||||
this.flakeWidth = 8; // Max pixel width reserved for snow element
|
||||
this.flakeHeight = 8; // Max pixel height reserved for snow element
|
||||
this.vMaxX = 5; // Maximum X velocity range for snow
|
||||
this.vMaxY = 4; // Maximum Y velocity range for snow
|
||||
this.zIndex = 0; // CSS stacking order applied to each snowflake
|
||||
|
||||
// --- "No user-serviceable parts inside" past this point, yadda yadda ---
|
||||
|
||||
var storm = this,
|
||||
features,
|
||||
// UA sniffing and backCompat rendering mode checks for fixed position, etc.
|
||||
isIE = navigator.userAgent.match(/msie/i),
|
||||
isIE6 = navigator.userAgent.match(/msie 6/i),
|
||||
isMobile = navigator.userAgent.match(/mobile|opera m(ob|in)/i),
|
||||
isBackCompatIE = (isIE && document.compatMode === 'BackCompat'),
|
||||
noFixed = (isBackCompatIE || isIE6),
|
||||
screenX = null, screenX2 = null, screenY = null, scrollY = null, docHeight = null, vRndX = null, vRndY = null,
|
||||
windOffset = 1,
|
||||
windMultiplier = 2,
|
||||
flakeTypes = 6,
|
||||
fixedForEverything = false,
|
||||
targetElementIsRelative = false,
|
||||
opacitySupported = (function(){
|
||||
try {
|
||||
document.createElement('div').style.opacity = '0.5';
|
||||
} catch(e) {
|
||||
return false;
|
||||
}
|
||||
return true;
|
||||
}()),
|
||||
didInit = false,
|
||||
docFrag = document.createDocumentFragment();
|
||||
|
||||
features = (function() {
|
||||
|
||||
var getAnimationFrame;
|
||||
|
||||
/**
|
||||
* hat tip: paul irish
|
||||
* http://paulirish.com/2011/requestanimationframe-for-smart-animating/
|
||||
* https://gist.github.com/838785
|
||||
*/
|
||||
|
||||
function timeoutShim(callback) {
|
||||
window.setTimeout(callback, 1000/(storm.animationInterval || 20));
|
||||
}
|
||||
|
||||
var _animationFrame = (window.requestAnimationFrame ||
|
||||
window.webkitRequestAnimationFrame ||
|
||||
window.mozRequestAnimationFrame ||
|
||||
window.oRequestAnimationFrame ||
|
||||
window.msRequestAnimationFrame ||
|
||||
timeoutShim);
|
||||
|
||||
// apply to window, avoid "illegal invocation" errors in Chrome
|
||||
getAnimationFrame = _animationFrame ? function() {
|
||||
return _animationFrame.apply(window, arguments);
|
||||
} : null;
|
||||
|
||||
var testDiv;
|
||||
|
||||
testDiv = document.createElement('div');
|
||||
|
||||
function has(prop) {
|
||||
|
||||
// test for feature support
|
||||
var result = testDiv.style[prop];
|
||||
return (result !== undefined ? prop : null);
|
||||
|
||||
}
|
||||
|
||||
// note local scope.
|
||||
var localFeatures = {
|
||||
|
||||
transform: {
|
||||
ie: has('-ms-transform'),
|
||||
moz: has('MozTransform'),
|
||||
opera: has('OTransform'),
|
||||
webkit: has('webkitTransform'),
|
||||
w3: has('transform'),
|
||||
prop: null // the normalized property value
|
||||
},
|
||||
|
||||
getAnimationFrame: getAnimationFrame
|
||||
|
||||
};
|
||||
|
||||
localFeatures.transform.prop = (
|
||||
localFeatures.transform.w3 ||
|
||||
localFeatures.transform.moz ||
|
||||
localFeatures.transform.webkit ||
|
||||
localFeatures.transform.ie ||
|
||||
localFeatures.transform.opera
|
||||
);
|
||||
|
||||
testDiv = null;
|
||||
|
||||
return localFeatures;
|
||||
|
||||
}());
|
||||
|
||||
this.timer = null;
|
||||
this.flakes = [];
|
||||
this.disabled = false;
|
||||
this.active = false;
|
||||
this.meltFrameCount = 20;
|
||||
this.meltFrames = [];
|
||||
|
||||
this.setXY = function(o, x, y) {
|
||||
|
||||
if (!o) {
|
||||
return false;
|
||||
}
|
||||
|
||||
if (storm.usePixelPosition || targetElementIsRelative) {
|
||||
|
||||
o.style.left = (x - storm.flakeWidth) + 'px';
|
||||
o.style.top = (y - storm.flakeHeight) + 'px';
|
||||
|
||||
} else if (noFixed) {
|
||||
|
||||
o.style.right = (100-(x/screenX*100)) + '%';
|
||||
// avoid creating vertical scrollbars
|
||||
o.style.top = (Math.min(y, docHeight-storm.flakeHeight)) + 'px';
|
||||
|
||||
} else {
|
||||
|
||||
if (!storm.flakeBottom) {
|
||||
|
||||
// if not using a fixed bottom coordinate...
|
||||
o.style.right = (100-(x/screenX*100)) + '%';
|
||||
o.style.bottom = (100-(y/screenY*100)) + '%';
|
||||
|
||||
} else {
|
||||
|
||||
// absolute top.
|
||||
o.style.right = (100-(x/screenX*100)) + '%';
|
||||
o.style.top = (Math.min(y, docHeight-storm.flakeHeight)) + 'px';
|
||||
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
};
|
||||
|
||||
this.events = (function() {
|
||||
|
||||
var old = (!window.addEventListener && window.attachEvent), slice = Array.prototype.slice,
|
||||
evt = {
|
||||
add: (old?'attachEvent':'addEventListener'),
|
||||
remove: (old?'detachEvent':'removeEventListener')
|
||||
};
|
||||
|
||||
function getArgs(oArgs) {
|
||||
var args = slice.call(oArgs), len = args.length;
|
||||
if (old) {
|
||||
args[1] = 'on' + args[1]; // prefix
|
||||
if (len > 3) {
|
||||
args.pop(); // no capture
|
||||
}
|
||||
} else if (len === 3) {
|
||||
args.push(false);
|
||||
}
|
||||
return args;
|
||||
}
|
||||
|
||||
function apply(args, sType) {
|
||||
var element = args.shift(),
|
||||
method = [evt[sType]];
|
||||
if (old) {
|
||||
element[method](args[0], args[1]);
|
||||
} else {
|
||||
element[method].apply(element, args);
|
||||
}
|
||||
}
|
||||
|
||||
function addEvent() {
|
||||
apply(getArgs(arguments), 'add');
|
||||
}
|
||||
|
||||
function removeEvent() {
|
||||
apply(getArgs(arguments), 'remove');
|
||||
}
|
||||
|
||||
return {
|
||||
add: addEvent,
|
||||
remove: removeEvent
|
||||
};
|
||||
|
||||
}());
|
||||
|
||||
function rnd(n,min) {
|
||||
if (isNaN(min)) {
|
||||
min = 0;
|
||||
}
|
||||
return (Math.random()*n)+min;
|
||||
}
|
||||
|
||||
function plusMinus(n) {
|
||||
return (parseInt(rnd(2),10)===1?n*-1:n);
|
||||
}
|
||||
|
||||
this.randomizeWind = function() {
|
||||
var i;
|
||||
vRndX = plusMinus(rnd(storm.vMaxX,0.2));
|
||||
vRndY = rnd(storm.vMaxY,0.2);
|
||||
if (this.flakes) {
|
||||
for (i=0; i<this.flakes.length; i++) {
|
||||
if (this.flakes[i].active) {
|
||||
this.flakes[i].setVelocities();
|
||||
}
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
this.scrollHandler = function() {
|
||||
var i;
|
||||
// "attach" snowflakes to bottom of window if no absolute bottom value was given
|
||||
scrollY = (storm.flakeBottom ? 0 : parseInt(window.scrollY || document.documentElement.scrollTop || (noFixed ? document.body.scrollTop : 0), 10));
|
||||
if (isNaN(scrollY)) {
|
||||
scrollY = 0; // Netscape 6 scroll fix
|
||||
}
|
||||
if (!fixedForEverything && !storm.flakeBottom && storm.flakes) {
|
||||
for (i=0; i<storm.flakes.length; i++) {
|
||||
if (storm.flakes[i].active === 0) {
|
||||
storm.flakes[i].stick();
|
||||
}
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
this.resizeHandler = function() {
|
||||
if (window.innerWidth || window.innerHeight) {
|
||||
screenX = window.innerWidth - 16 - storm.flakeRightOffset;
|
||||
screenY = (storm.flakeBottom || window.innerHeight);
|
||||
} else {
|
||||
screenX = (document.documentElement.clientWidth || document.body.clientWidth || document.body.scrollWidth) - (!isIE ? 8 : 0) - storm.flakeRightOffset;
|
||||
screenY = storm.flakeBottom || document.documentElement.clientHeight || document.body.clientHeight || document.body.scrollHeight;
|
||||
}
|
||||
docHeight = document.body.offsetHeight;
|
||||
screenX2 = parseInt(screenX/2,10);
|
||||
};
|
||||
|
||||
this.resizeHandlerAlt = function() {
|
||||
screenX = storm.targetElement.offsetWidth - storm.flakeRightOffset;
|
||||
screenY = storm.flakeBottom || storm.targetElement.offsetHeight;
|
||||
screenX2 = parseInt(screenX/2,10);
|
||||
docHeight = document.body.offsetHeight;
|
||||
};
|
||||
|
||||
this.freeze = function() {
|
||||
// pause animation
|
||||
if (!storm.disabled) {
|
||||
storm.disabled = 1;
|
||||
} else {
|
||||
return false;
|
||||
}
|
||||
storm.timer = null;
|
||||
};
|
||||
|
||||
this.resume = function() {
|
||||
if (storm.disabled) {
|
||||
storm.disabled = 0;
|
||||
} else {
|
||||
return false;
|
||||
}
|
||||
storm.timerInit();
|
||||
};
|
||||
|
||||
this.toggleSnow = function() {
|
||||
if (!storm.flakes.length) {
|
||||
// first run
|
||||
storm.start();
|
||||
} else {
|
||||
storm.active = !storm.active;
|
||||
if (storm.active) {
|
||||
storm.show();
|
||||
storm.resume();
|
||||
} else {
|
||||
storm.stop();
|
||||
storm.freeze();
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
this.stop = function() {
|
||||
var i;
|
||||
this.freeze();
|
||||
for (i=0; i<this.flakes.length; i++) {
|
||||
this.flakes[i].o.style.display = 'none';
|
||||
}
|
||||
storm.events.remove(window,'scroll',storm.scrollHandler);
|
||||
storm.events.remove(window,'resize',storm.resizeHandler);
|
||||
if (storm.freezeOnBlur) {
|
||||
if (isIE) {
|
||||
storm.events.remove(document,'focusout',storm.freeze);
|
||||
storm.events.remove(document,'focusin',storm.resume);
|
||||
} else {
|
||||
storm.events.remove(window,'blur',storm.freeze);
|
||||
storm.events.remove(window,'focus',storm.resume);
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
this.show = function() {
|
||||
var i;
|
||||
for (i=0; i<this.flakes.length; i++) {
|
||||
this.flakes[i].o.style.display = 'block';
|
||||
}
|
||||
};
|
||||
|
||||
this.SnowFlake = function(type,x,y) {
|
||||
var s = this;
|
||||
this.type = type;
|
||||
this.x = x||parseInt(rnd(screenX-20),10);
|
||||
this.y = (!isNaN(y)?y:-rnd(screenY)-12);
|
||||
this.vX = null;
|
||||
this.vY = null;
|
||||
this.vAmpTypes = [1,1.2,1.4,1.6,1.8]; // "amplification" for vX/vY (based on flake size/type)
|
||||
this.vAmp = this.vAmpTypes[this.type] || 1;
|
||||
this.melting = false;
|
||||
this.meltFrameCount = storm.meltFrameCount;
|
||||
this.meltFrames = storm.meltFrames;
|
||||
this.meltFrame = 0;
|
||||
this.twinkleFrame = 0;
|
||||
this.active = 1;
|
||||
this.fontSize = (10+(this.type/5)*10);
|
||||
this.o = document.createElement('div');
|
||||
this.o.innerHTML = storm.snowCharacter;
|
||||
if (storm.className) {
|
||||
this.o.setAttribute('class', storm.className);
|
||||
}
|
||||
this.o.style.color = storm.snowColor;
|
||||
this.o.style.position = (fixedForEverything?'fixed':'absolute');
|
||||
if (storm.useGPU && features.transform.prop) {
|
||||
// GPU-accelerated snow.
|
||||
this.o.style[features.transform.prop] = 'translate3d(0px, 0px, 0px)';
|
||||
}
|
||||
this.o.style.width = storm.flakeWidth+'px';
|
||||
this.o.style.height = storm.flakeHeight+'px';
|
||||
this.o.style.fontFamily = 'arial,verdana';
|
||||
this.o.style.cursor = 'default';
|
||||
this.o.style.overflow = 'hidden';
|
||||
this.o.style.fontWeight = 'normal';
|
||||
this.o.style.zIndex = storm.zIndex;
|
||||
docFrag.appendChild(this.o);
|
||||
|
||||
this.refresh = function() {
|
||||
if (isNaN(s.x) || isNaN(s.y)) {
|
||||
// safety check
|
||||
return false;
|
||||
}
|
||||
storm.setXY(s.o, s.x, s.y);
|
||||
};
|
||||
|
||||
this.stick = function() {
|
||||
if (noFixed || (storm.targetElement !== document.documentElement && storm.targetElement !== document.body)) {
|
||||
s.o.style.top = (screenY+scrollY-storm.flakeHeight)+'px';
|
||||
} else if (storm.flakeBottom) {
|
||||
s.o.style.top = storm.flakeBottom+'px';
|
||||
} else {
|
||||
s.o.style.display = 'none';
|
||||
s.o.style.top = 'auto';
|
||||
s.o.style.bottom = '0%';
|
||||
s.o.style.position = 'fixed';
|
||||
s.o.style.display = 'block';
|
||||
}
|
||||
};
|
||||
|
||||
this.vCheck = function() {
|
||||
if (s.vX>=0 && s.vX<0.2) {
|
||||
s.vX = 0.2;
|
||||
} else if (s.vX<0 && s.vX>-0.2) {
|
||||
s.vX = -0.2;
|
||||
}
|
||||
if (s.vY>=0 && s.vY<0.2) {
|
||||
s.vY = 0.2;
|
||||
}
|
||||
};
|
||||
|
||||
this.move = function() {
|
||||
var vX = s.vX*windOffset, yDiff;
|
||||
s.x += vX;
|
||||
s.y += (s.vY*s.vAmp);
|
||||
if (s.x >= screenX || screenX-s.x < storm.flakeWidth) { // X-axis scroll check
|
||||
s.x = 0;
|
||||
} else if (vX < 0 && s.x-storm.flakeLeftOffset < -storm.flakeWidth) {
|
||||
s.x = screenX-storm.flakeWidth-1; // flakeWidth;
|
||||
}
|
||||
s.refresh();
|
||||
yDiff = screenY+scrollY-s.y+storm.flakeHeight;
|
||||
if (yDiff<storm.flakeHeight) {
|
||||
s.active = 0;
|
||||
if (storm.snowStick) {
|
||||
s.stick();
|
||||
} else {
|
||||
s.recycle();
|
||||
}
|
||||
} else {
|
||||
if (storm.useMeltEffect && s.active && s.type < 3 && !s.melting && Math.random()>0.998) {
|
||||
// ~1/1000 chance of melting mid-air, with each frame
|
||||
s.melting = true;
|
||||
s.melt();
|
||||
// only incrementally melt one frame
|
||||
// s.melting = false;
|
||||
}
|
||||
if (storm.useTwinkleEffect) {
|
||||
if (s.twinkleFrame < 0) {
|
||||
if (Math.random() > 0.97) {
|
||||
s.twinkleFrame = parseInt(Math.random() * 8, 10);
|
||||
}
|
||||
} else {
|
||||
s.twinkleFrame--;
|
||||
if (!opacitySupported) {
|
||||
s.o.style.visibility = (s.twinkleFrame && s.twinkleFrame % 2 === 0 ? 'hidden' : 'visible');
|
||||
} else {
|
||||
s.o.style.opacity = (s.twinkleFrame && s.twinkleFrame % 2 === 0 ? 0 : 1);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
this.animate = function() {
|
||||
// main animation loop
|
||||
// move, check status, die etc.
|
||||
s.move();
|
||||
};
|
||||
|
||||
this.setVelocities = function() {
|
||||
s.vX = vRndX+rnd(storm.vMaxX*0.12,0.1);
|
||||
s.vY = vRndY+rnd(storm.vMaxY*0.12,0.1);
|
||||
};
|
||||
|
||||
this.setOpacity = function(o,opacity) {
|
||||
if (!opacitySupported) {
|
||||
return false;
|
||||
}
|
||||
o.style.opacity = opacity;
|
||||
};
|
||||
|
||||
this.melt = function() {
|
||||
if (!storm.useMeltEffect || !s.melting) {
|
||||
s.recycle();
|
||||
} else {
|
||||
if (s.meltFrame < s.meltFrameCount) {
|
||||
s.setOpacity(s.o,s.meltFrames[s.meltFrame]);
|
||||
s.o.style.fontSize = s.fontSize-(s.fontSize*(s.meltFrame/s.meltFrameCount))+'px';
|
||||
s.o.style.lineHeight = storm.flakeHeight+2+(storm.flakeHeight*0.75*(s.meltFrame/s.meltFrameCount))+'px';
|
||||
s.meltFrame++;
|
||||
} else {
|
||||
s.recycle();
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
this.recycle = function() {
|
||||
s.o.style.display = 'none';
|
||||
s.o.style.position = (fixedForEverything?'fixed':'absolute');
|
||||
s.o.style.bottom = 'auto';
|
||||
s.setVelocities();
|
||||
s.vCheck();
|
||||
s.meltFrame = 0;
|
||||
s.melting = false;
|
||||
s.setOpacity(s.o,1);
|
||||
s.o.style.padding = '0px';
|
||||
s.o.style.margin = '0px';
|
||||
s.o.style.fontSize = s.fontSize+'px';
|
||||
s.o.style.lineHeight = (storm.flakeHeight+2)+'px';
|
||||
s.o.style.textAlign = 'center';
|
||||
s.o.style.verticalAlign = 'baseline';
|
||||
s.x = parseInt(rnd(screenX-storm.flakeWidth-20),10);
|
||||
s.y = parseInt(rnd(screenY)*-1,10)-storm.flakeHeight;
|
||||
s.refresh();
|
||||
s.o.style.display = 'block';
|
||||
s.active = 1;
|
||||
};
|
||||
|
||||
this.recycle(); // set up x/y coords etc.
|
||||
this.refresh();
|
||||
|
||||
};
|
||||
|
||||
this.snow = function() {
|
||||
var active = 0, flake = null, i, j;
|
||||
for (i=0, j=storm.flakes.length; i<j; i++) {
|
||||
if (storm.flakes[i].active === 1) {
|
||||
storm.flakes[i].move();
|
||||
active++;
|
||||
}
|
||||
if (storm.flakes[i].melting) {
|
||||
storm.flakes[i].melt();
|
||||
}
|
||||
}
|
||||
if (active<storm.flakesMaxActive) {
|
||||
flake = storm.flakes[parseInt(rnd(storm.flakes.length),10)];
|
||||
if (flake.active === 0) {
|
||||
flake.melting = true;
|
||||
}
|
||||
}
|
||||
if (storm.timer) {
|
||||
features.getAnimationFrame(storm.snow);
|
||||
}
|
||||
};
|
||||
|
||||
this.mouseMove = function(e) {
|
||||
if (!storm.followMouse) {
|
||||
return true;
|
||||
}
|
||||
var x = parseInt(e.clientX,10);
|
||||
if (x<screenX2) {
|
||||
windOffset = -windMultiplier+(x/screenX2*windMultiplier);
|
||||
} else {
|
||||
x -= screenX2;
|
||||
windOffset = (x/screenX2)*windMultiplier;
|
||||
}
|
||||
};
|
||||
|
||||
this.createSnow = function(limit,allowInactive) {
|
||||
var i;
|
||||
for (i=0; i<limit; i++) {
|
||||
storm.flakes[storm.flakes.length] = new storm.SnowFlake(parseInt(rnd(flakeTypes),10));
|
||||
if (allowInactive || i>storm.flakesMaxActive) {
|
||||
storm.flakes[storm.flakes.length-1].active = -1;
|
||||
}
|
||||
}
|
||||
storm.targetElement.appendChild(docFrag);
|
||||
};
|
||||
|
||||
this.timerInit = function() {
|
||||
storm.timer = true;
|
||||
storm.snow();
|
||||
};
|
||||
|
||||
this.init = function() {
|
||||
var i;
|
||||
for (i=0; i<storm.meltFrameCount; i++) {
|
||||
storm.meltFrames.push(1-(i/storm.meltFrameCount));
|
||||
}
|
||||
storm.randomizeWind();
|
||||
storm.createSnow(storm.flakesMax); // create initial batch
|
||||
storm.events.add(window,'resize',storm.resizeHandler);
|
||||
storm.events.add(window,'scroll',storm.scrollHandler);
|
||||
if (storm.freezeOnBlur) {
|
||||
if (isIE) {
|
||||
storm.events.add(document,'focusout',storm.freeze);
|
||||
storm.events.add(document,'focusin',storm.resume);
|
||||
} else {
|
||||
storm.events.add(window,'blur',storm.freeze);
|
||||
storm.events.add(window,'focus',storm.resume);
|
||||
}
|
||||
}
|
||||
storm.resizeHandler();
|
||||
storm.scrollHandler();
|
||||
if (storm.followMouse) {
|
||||
storm.events.add(isIE?document:window,'mousemove',storm.mouseMove);
|
||||
}
|
||||
storm.animationInterval = Math.max(20,storm.animationInterval);
|
||||
storm.timerInit();
|
||||
};
|
||||
|
||||
this.start = function(bFromOnLoad) {
|
||||
if (!didInit) {
|
||||
didInit = true;
|
||||
} else if (bFromOnLoad) {
|
||||
// already loaded and running
|
||||
return true;
|
||||
}
|
||||
if (typeof storm.targetElement === 'string') {
|
||||
var targetID = storm.targetElement;
|
||||
storm.targetElement = document.getElementById(targetID);
|
||||
if (!storm.targetElement) {
|
||||
throw new Error('Snowstorm: Unable to get targetElement "'+targetID+'"');
|
||||
}
|
||||
}
|
||||
if (!storm.targetElement) {
|
||||
storm.targetElement = (document.body || document.documentElement);
|
||||
}
|
||||
if (storm.targetElement !== document.documentElement && storm.targetElement !== document.body) {
|
||||
// re-map handler to get element instead of screen dimensions
|
||||
storm.resizeHandler = storm.resizeHandlerAlt;
|
||||
//and force-enable pixel positioning
|
||||
storm.usePixelPosition = true;
|
||||
}
|
||||
storm.resizeHandler(); // get bounding box elements
|
||||
storm.usePositionFixed = (storm.usePositionFixed && !noFixed && !storm.flakeBottom); // whether or not position:fixed is to be used
|
||||
if (window.getComputedStyle) {
|
||||
// attempt to determine if body or user-specified snow parent element is relatlively-positioned.
|
||||
try {
|
||||
targetElementIsRelative = (window.getComputedStyle(storm.targetElement, null).getPropertyValue('position') === 'relative');
|
||||
} catch(e) {
|
||||
// oh well
|
||||
targetElementIsRelative = false;
|
||||
}
|
||||
}
|
||||
fixedForEverything = storm.usePositionFixed;
|
||||
if (screenX && screenY && !storm.disabled) {
|
||||
storm.init();
|
||||
storm.active = true;
|
||||
}
|
||||
};
|
||||
|
||||
function doDelayedStart() {
|
||||
window.setTimeout(function() {
|
||||
storm.start(true);
|
||||
}, 20);
|
||||
// event cleanup
|
||||
storm.events.remove(isIE?document:window,'mousemove',doDelayedStart);
|
||||
}
|
||||
|
||||
function doStart() {
|
||||
if (!storm.excludeMobile || !isMobile) {
|
||||
doDelayedStart();
|
||||
}
|
||||
// event cleanup
|
||||
storm.events.remove(window, 'load', doStart);
|
||||
}
|
||||
|
||||
// hooks for starting the snow
|
||||
if (storm.autoStart) {
|
||||
storm.events.add(window, 'load', doStart, false);
|
||||
}
|
||||
|
||||
return this;
|
||||
|
||||
};
|
||||
|
||||
export default SnowStorm;
|
||||
|
|
@ -48,7 +48,6 @@ setInterval(forceGC, 15 * 60 * SECOND);
|
|||
// create http server
|
||||
const server = http.createServer(app);
|
||||
|
||||
|
||||
//
|
||||
// websockets
|
||||
// -----------------------------------------------------------------------------
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user