75 lines
1.9 KiB
JavaScript
75 lines
1.9 KiB
JavaScript
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/**
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* A full-screen weather effect which renders gently falling autumn leaves.
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* @extends {ParticleEffect}
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*/
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class AutumnLeavesWeatherEffect extends ParticleEffect {
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/** @inheritdoc */
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static label = "WEATHER.AutumnLeaves";
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/**
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* Configuration for the particle emitter for falling leaves
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* @type {PIXI.particles.EmitterConfigV3}
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*/
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static LEAF_CONFIG = {
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lifetime: {min: 10, max: 10},
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behaviors: [
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{
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type: "alpha",
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config: {
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alpha: {
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list: [{time: 0, value: 0.9}, {time: 1, value: 0.5}]
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}
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}
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},
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{
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type: "moveSpeed",
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config: {
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speed: {
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list: [{time: 0, value: 20}, {time: 1, value: 60}]
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},
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minMult: 0.6
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}
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},
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{
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type: "scale",
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config: {
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scale: {
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list: [{time: 0, value: 0.2}, {time: 1, value: 0.4}]
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},
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minMult: 0.5
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}
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},
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{
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type: "rotation",
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config: {accel: 0, minSpeed: 100, maxSpeed: 200, minStart: 0, maxStart: 365}
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},
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{
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type: "textureRandom",
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config: {
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textures: Array.fromRange(6).map(n => `ui/particles/leaf${n + 1}.png`)
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}
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}
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]
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};
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/* -------------------------------------------- */
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/** @inheritdoc */
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getParticleEmitters() {
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const d = canvas.dimensions;
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const maxParticles = (d.width / d.size) * (d.height / d.size) * 0.25;
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const config = foundry.utils.deepClone(this.constructor.LEAF_CONFIG);
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config.maxParticles = maxParticles;
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config.frequency = config.lifetime.min / maxParticles;
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config.behaviors.push({
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type: "spawnShape",
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config: {
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type: "rect",
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data: {x: d.sceneRect.x, y: d.sceneRect.y, w: d.sceneRect.width, h: d.sceneRect.height}
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}
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});
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return [this.createEmitter(config)];
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}
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}
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