90 lines
2.6 KiB
JavaScript
90 lines
2.6 KiB
JavaScript
import { ColorEffect } from '../effects/color_effect.js';
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import { NoiseEffect } from '../effects/noise_effect.js';
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/// An object to manage effects (by not destroying them all the time)
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export const EffectsManager = class EffectsManager {
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constructor(connections) {
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this.connections = connections;
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this.used = [];
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this.color_effects = [];
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this.noise_effects = [];
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}
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connect_to_destroy(effect) {
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effect.old_actor = effect.get_actor();
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if (effect.old_actor)
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effect.old_actor_id = effect.old_actor.connect('destroy', _ => {
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this.remove(effect);
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});
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this.connections.connect(effect, 'notify::actor', _ => {
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let actor = effect.get_actor();
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if (effect.old_actor && actor != effect.old_actor)
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effect.old_actor.disconnect(effect.old_actor_id);
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if (actor) {
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effect.old_actor_id = actor.connect('destroy', _ => {
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this.remove(effect);
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});
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}
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});
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}
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new_color_effect(params, settings) {
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let effect;
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if (this.color_effects.length > 0) {
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effect = this.color_effects.splice(0, 1)[0];
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effect.set(params);
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} else
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effect = new ColorEffect(params, settings);
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this.used.push(effect);
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this.connect_to_destroy(effect);
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return effect;
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}
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new_noise_effect(params, settings) {
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let effect;
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if (this.noise_effects.length > 0) {
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effect = this.noise_effects.splice(0, 1)[0];
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effect.set(params);
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} else
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effect = new NoiseEffect(params, settings);
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this.used.push(effect);
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this.connect_to_destroy(effect);
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return effect;
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}
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remove(effect) {
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effect.get_actor()?.remove_effect(effect);
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if (effect.old_actor)
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effect.old_actor.disconnect(effect.old_actor_id);
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delete effect.old_actor;
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delete effect.old_actor_id;
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let index = this.used.indexOf(effect);
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if (index >= 0) {
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this.used.splice(index, 1);
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if (effect instanceof ColorEffect)
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this.color_effects.push(effect);
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else if (effect instanceof NoiseEffect)
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this.noise_effects.push(effect);
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}
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}
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destroy_all() {
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this.used.forEach(effect => { this.remove(effect); });
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[
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this.used,
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this.color_effects,
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this.noise_effects
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].forEach(array => {
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array.splice(0, array.length);
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});
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}
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};
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