143 lines
4.8 KiB
HTML
143 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="https://code.createjs.com/1.0.0/preloadjs.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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<script>
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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 manifest = library.properties.manifest.map((item) => ({
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...item,
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type: createjs.Types.IMAGE, // can't infer from assetProxy URL!
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src:
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"/api/assetProxy?url=" +
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encodeURIComponent(
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"http://images.neopets.com/cp/items/data/000/000/564/564507_fc3216b9b8/" +
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item.src
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),
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}));
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const queue = new createjs.LoadQueue();
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const queueCompleted = new Promise((resolve) =>
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queue.on("complete", () => resolve())
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);
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queue.loadManifest(manifest);
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await queueCompleted;
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const spriteSheets = composition.getSpriteSheet();
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for (const { name, frames } of library.ssMetadata) {
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spriteSheets[name] = new createjs.SpriteSheet({
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images: [queue.getResult(name)],
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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.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.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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stage.addChild(movieClip);
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// FPS-ish updates with RAF! https://stackoverflow.com/a/19772220/107415
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// Quite a bit going on here, the basic idea is that we want to update
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// the stage _more often_ than we update the MovieClip, because we want
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// fade-ins to happen with as high of a frame-rate as possible, but we
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// want the movie itself to run at its canonical FPS. So, we set the
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// Ticker into `requestAnimationFrame` mode to send a global tick every
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// time we get to draw, and update the stage on every such tick - but
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// we only let it tick its _children_ if enough time has passed since
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// the last one.
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const movieTickInterval = 1000 / library.properties.fps;
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let lastMovieTick = performance.now();
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let pauseMovies = false;
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createjs.Ticker.timingMode = createjs.Ticker.RAF;
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createjs.Ticker.on("tick", () => {
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const now = performance.now();
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const elapsed = now - lastMovieTick;
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if (elapsed > movieTickInterval && !pauseMovies) {
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stage.tickOnUpdate = true;
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lastMovieTick = now - (elapsed % movieTickInterval);
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movieClip.updateCache();
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} else {
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stage.tickOnUpdate = false;
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}
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stage.update();
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});
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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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pauseMovies = !pauseMovies;
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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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