Function crackleEffect

js/script.js:1638–1651

(star)

// Crackle pops into a small cloud of golden sparks.
//噼里啪啦的一声，迸出一小团金色的火花。
function crackleEffect(star) {
	const count = isHighQuality ? 32 : 16;
	createParticleArc(0, PI_2, count, 1.8, (angle) => {
		Spark.add(
			star.x,
			star.y,
			COLOR.Gold,
			angle,
			// apply near cubic falloff to speed (places more particles towards outside)
			Math.pow(Math.random(), 0.45) * 2.4,
			300 + Math.random() * 200
		);
	});
}

/**
 * 烟花可以用以下选项构建: