@woosh/meep-engine/src/engine/intelligence/behavior/util/RandomDelayBehavior.js

Pure JavaScript game engine. Fully featured and production ready.

import { UINT32_MAX } from "../../../../core/binary/UINT32_MAX.js";
import { NumericInterval } from "../../../../core/math/interval/NumericInterval.js";
import { seededRandom } from "../../../../core/math/random/seededRandom.js";
import { Behavior } from "../Behavior.js";
import { BehaviorStatus } from "../BehaviorStatus.js";


function nextSeed() {
    return Date.now() ^ (Math.random() * UINT32_MAX);
}

/**
 * Wait for a certain amount of time
 * @author Alex Goldring
 * @copyright Company Named Limited (c) 2025
 */
export class RandomDelayBehavior extends Behavior {

    /**
     * Delay value in seconds
     * @type {number}
     */
    value = 0;

    /**
     *
     * @type {NumericInterval}
     */
    limits = new NumericInterval(1, 1);

    /**
     * Time elapsed
     * @private
     * @type {number}
     */
    elapsed = 0;

    random = seededRandom(nextSeed())


    fromJSON({ limits, elapsed = 0 }) {
        this.limits.fromJSON(limits);
        this.elapsed = elapsed;
    }

    /**
     *
     * @param json
     * @return {RandomDelayBehavior}
     */
    static fromJSON(json) {
        const r = new RandomDelayBehavior();
        r.fromJSON(json);
        return r;
    }

    /**
     *
     * @return {RandomDelayBehavior}
     * @param min
     * @param max
     */
    static from(min, max) {
        const r = new RandomDelayBehavior();

        r.limits.set(min, max);

        return r;
    }

    initialize(ctx) {
        super.initialize(ctx);

        this.elapsed = 0;
        this.value = this.limits.sampleRandom(this.random)
    }

    tick(timeDelta) {
        this.elapsed += timeDelta;

        if (this.elapsed >= this.value) {
            return BehaviorStatus.Succeeded;
        }

        return BehaviorStatus.Running;
    }
}