@woosh/meep-engine/src/engine/graphics/ecs/animation/AnimationRule.js

Pure JavaScript game engine. Fully featured and production ready.

export class AnimationRule {
    constructor(startEvent, animationName, speed, transitionTime, loop = false) {
        this.startEvent = startEvent;
        this.stopEvent = null;
        this.animation = animationName;
        this.speed = speed;
        this.transition = transitionTime;
        this.weight = 1;
        this.loop = loop;
    }

    toJSON() {
        return {
            startEvent: this.startEvent,
            stopEvent: this.stopEvent,
            animation: this.animation,
            speed: this.speed,
            transition: this.transition,
            loop: this.loop,
            weight: this.weight
        };
    }

    fromJSON(json) {

        this.startEvent = json.startEvent;
        this.stopEvent = json.stopEvent;

        this.animation = json.animation;

        if (typeof json.speed === "number") {
            this.speed = json.speed;
        } else {
            this.speed = 1;
        }

        this.transition = json.transition;

        if (typeof json.loop === "boolean") {
            this.loop = json.loop;
        } else {
            this.loop = false;
        }

        if (typeof json.weight === "number") {
            this.weight = json.weight;
        } else {
            this.weight = 1;
        }
    }

    /**
     *
     * @param {BinaryBuffer} buffer
     */
    toBinaryBuffer(buffer) {
        buffer.writeUTF8String(this.animation);
        buffer.writeUTF8String(this.startEvent);
        buffer.writeUTF8String(this.stopEvent);

        buffer.writeUint8(this.loop ? 1 : 0);
        buffer.writeFloat64(this.weight);
        buffer.writeFloat64(this.transition);
        buffer.writeFloat64(this.speed);

    }

    /**
     *
     * @param {BinaryBuffer} buffer
     */
    fromBinaryBuffer(buffer) {
        this.animation = buffer.readUTF8String();
        this.startEvent = buffer.readUTF8String();
        this.stopEvent = buffer.readUTF8String();

        this.loop = buffer.readUint8() !== 0;
        this.weight = buffer.readFloat64();
        this.transition = buffer.readFloat64();
        this.speed = buffer.readFloat64();
    }
}