Matchu
fb39a4f935
we got rid of the custom timing now that I learned about additional API hooks to do exactly what I want!
150 lines
4.8 KiB
HTML
150 lines
4.8 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<script src="https://code.createjs.com/1.0.0/easeljs.min.js"></script>
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<script src="https://code.createjs.com/1.0.0/tweenjs.min.js"></script>
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<script src="/api/assetProxy?url=http://images.neopets.com/cp/items/data/000/000/564/564507_fc3216b9b8/all-item_foreground_lower.js"></script>
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</head>
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<body>
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<div style="display: flex; justify-content: center;">
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<div
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style="
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width: 100%;
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max-width: 600px;
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border: 1px solid #aaa;
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position: relative;
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"
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>
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<div style="padding-bottom: 100%;"></div>
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<canvas
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id="stage-canvas"
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style="
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position: absolute;
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left: 0;
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right: 0;
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top: 0;
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bottom: 0;
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width: 100%;
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height: 100%;
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"
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></canvas>
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</div>
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</div>
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<div style="margin-top: 1em; text-align: center;">
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<button id="show-hide">Show/hide</button>
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<button id="pause-play">Pause/play</button>
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</div>
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<div style="margin-top: 1em; text-align: center;">
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FPS: <span id="fps-count">…</span>
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</div>
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<script>
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function loadImage(src) {
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return new Promise((resolve, reject) => {
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const image = new Image();
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image.onload = () => resolve(image);
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image.onerror = (e) => reject(e);
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image.src = src;
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});
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}
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function proxyUrl(url) {
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return "/api/assetProxy?url=" + encodeURIComponent(url);
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}
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async function main() {
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const composition = Object.values(AdobeAn.compositions)[0];
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const library = composition.getLibrary();
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const manifestImages = new Map(
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library.properties.manifest.map(({ id, src }) => [
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id,
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loadImage(
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proxyUrl(
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"http://images.neopets.com/cp/items/data/000/000/564/564507_fc3216b9b8/" +
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src
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)
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),
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])
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);
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try {
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await Promise.all(manifestImages.values());
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} catch (e) {
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console.error("Error loading images", e);
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return;
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}
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const spriteSheets = composition.getSpriteSheet();
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for (const { name, frames } of library.ssMetadata) {
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const image = await manifestImages.get(name);
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spriteSheets[name] = new createjs.SpriteSheet({
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images: [image],
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frames,
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});
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}
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const movieClip = new library.allitem_foreground_lower();
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const canvas = document.getElementById("stage-canvas");
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const stage = new library.Stage(canvas);
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canvas.width = canvas.offsetWidth * window.devicePixelRatio;
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canvas.height = canvas.offsetHeight * window.devicePixelRatio;
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stage.scaleX =
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(canvas.offsetWidth * window.devicePixelRatio) /
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library.properties.width;
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stage.scaleY =
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(canvas.offsetHeight * window.devicePixelRatio) /
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library.properties.height;
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movieClip.alpha = 0;
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const tween = createjs.Tween.get(movieClip, { paused: true }).to(
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{ alpha: 1 },
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200
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);
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stage.on(
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"drawend",
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() => {
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tween.paused = false;
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},
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null,
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true
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);
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// TODO: I'm not 100% clear on why, but manually caching the movie and
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// manually updating the cache at a 60FPS rate (that's how often
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// the tick fires, regardless of movie framerate) seems to
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// substantially improve performance of things like fade-in. I
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// think it might just be perceived performance, because the
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// alpha applies to a cached raster instead of the individual
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// layers, so it looks better? Although hell, maybe applying
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// alpha to a cached raster just _is_ faster than applying it to
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// like 200 overlapping layers, that would just make sense...
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movieClip.cache(
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0,
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0,
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library.properties.width,
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library.properties.height
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);
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movieClip.on("tick", () => movieClip.updateCache());
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stage.addChild(movieClip);
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movieClip.framerate = library.properties.fps;
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createjs.Ticker.timingMode = createjs.Ticker.RAF;
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createjs.Ticker.on("tick", (e) => stage.update(e));
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document.getElementById("show-hide").addEventListener("click", () => {
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tween.reversed = !tween.reversed;
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tween.setPosition(0);
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tween.paused = false;
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});
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document.getElementById("pause-play").addEventListener("click", () => {
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movieClip.tickEnabled = !movieClip.tickEnabled;
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});
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}
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main();
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</script>
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</body>
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</html>
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