mirror of https://github.com/espruino/BangleApps
44 lines
1.1 KiB
JavaScript
44 lines
1.1 KiB
JavaScript
class Ring {
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constructor() {
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this.alive = true;
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this.radius = 0;
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this.color = [
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Math.random() > 0.5 ? 1 : 0, Math.random() > 0.5 ? 1 : 0, Math.random() > 0.5 ? 1 : 0
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];
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}
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}
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const LIMIT = 10;
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const RADIUS_LIMIT = 240;
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const pool = [];
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let RANDOM = 0;
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let BUFFER = 0;
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let BUFFER_SPREAD = 20;
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const animate = () => {
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if (pool.length < LIMIT && BUFFER === 0) {
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const available = pool.filter(ring => !ring.alive);
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const newRing = available.length ? available[0] : new Ring();
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pool.push(newRing);
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BUFFER = BUFFER_SPREAD;
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}
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g.clear();
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if (BUFFER > 0) BUFFER--;
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for (const ring of pool) {
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if (ring.radius > RADIUS_LIMIT) {
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ring.radius = 0;
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ring.alive = false;
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} else {
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if (RANDOM) g.setColor(ring.color[0], ring.color[1], ring.color[2]);
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else g.setColor(1, 1, 1);
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g.drawCircle(120, 120, ring.radius++);
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}
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}
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setTimeout(animate, 1000/60);
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};
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setWatch(() => (BUFFER_SPREAD += 5), BTN1, {repeat: true});
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setWatch(() => (RANDOM = !RANDOM), BTN2, {repeat: true});
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setWatch(() => (BUFFER_SPREAD -= 5), BTN3, {repeat: true});
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animate(); |