@tsparticles/plugin-emitters/browser/EmittersInstancesManager.js

tsParticles emitters plugin

import { isNumber } from "@tsparticles/engine";
import { Emitter } from "./Options/Classes/Emitter.js";
const defaultIndex = 0;
export class EmittersInstancesManager {
    #containerArrays;
    #pluginManager;
    constructor(pluginManager) {
        this.#containerArrays = new Map();
        this.#pluginManager = pluginManager;
    }
    async addEmitter(container, options, position) {
        const emitterOptions = new Emitter();
        emitterOptions.load(options);
        const { EmitterInstance } = await import("./EmitterInstance.js"), emitter = new EmitterInstance(this.#pluginManager, container, (emitter) => {
            this.removeEmitter(container, emitter);
        }, emitterOptions, position);
        await emitter.init();
        this.getArray(container).push(emitter);
        return emitter;
    }
    clear(container) {
        this.initContainer(container);
        this.#containerArrays.set(container, []);
    }
    getArray(container) {
        this.initContainer(container);
        let array = this.#containerArrays.get(container);
        if (!array) {
            array = [];
            this.#containerArrays.set(container, array);
        }
        return array;
    }
    initContainer(container) {
        if (this.#containerArrays.has(container)) {
            return;
        }
        this.#containerArrays.set(container, []);
        container.getEmitter = (idxOrName) => {
            const array = this.getArray(container);
            return idxOrName === undefined || isNumber(idxOrName)
                ? array[idxOrName ?? defaultIndex]
                : array.find(t => t.name === idxOrName);
        };
        container.addEmitter = async (options, position) => this.addEmitter(container, options, position);
        container.removeEmitter = (idxOrName) => {
            const emitter = container.getEmitter?.(idxOrName);
            if (emitter) {
                this.removeEmitter(container, emitter);
            }
        };
        container.playEmitter = (idxOrName) => {
            const emitter = container.getEmitter?.(idxOrName);
            if (emitter) {
                emitter.externalPlay();
            }
        };
        container.pauseEmitter = (idxOrName) => {
            const emitter = container.getEmitter?.(idxOrName);
            if (emitter) {
                emitter.externalPause();
            }
        };
    }
    removeEmitter(container, emitter) {
        const index = this.getArray(container).indexOf(emitter), minIndex = 0, deleteCount = 1;
        if (index >= minIndex) {
            this.getArray(container).splice(index, deleteCount);
        }
    }
}