deadem/src/extractors/EntityMutationExtractor.js

JavaScript (Node.js & Browsers) parser for Deadlock (Valve Source 2 Engine) demo/replay files

import EntityMutation from '#data/entity/EntityMutation.js';

import FieldPathExtractor from './FieldPathExtractor.js';

class EntityMutationExtractor {
    /**
     * @public
     * @constructor
     * @param {BitBuffer} bitBuffer
     * @param {Serializer} serializer
     */
    constructor(bitBuffer, serializer) {
        this._bitBuffer = bitBuffer;
        this._serializer = serializer;
    }

    /**
     * Extracts and returns all entity mutations from the buffer.
     *
     * @public
     * @returns {Array<EntityMutation>}
     */
    all() {
        const fieldPathExtractor = new FieldPathExtractor(this._bitBuffer);
        const fieldPaths = fieldPathExtractor.all();

        const mutations = [ ];

        fieldPaths.forEach((fieldPath) => {
            const decoder = this._serializer.getDecoderForFieldPath(fieldPath);

            const value = decoder(this._bitBuffer);

            mutations.push(new EntityMutation(fieldPath, value));
        });

        return mutations;
    }

    /**
     * Extracts and returns all entity mutations from the buffer
     * in a packed (transferable) format, suitable for transmission
     * between threads.
     *
     * @public
     * @returns {Array<bigint|*>}
     */
    allPacked() {
        const fieldPathExtractor = new FieldPathExtractor(this._bitBuffer);
        const fieldPaths = fieldPathExtractor.all();

        const mutations = [ ];

        fieldPaths.forEach((fieldPath) => {
            const decoder = this._serializer.getDecoderForFieldPath(fieldPath);

            const value = decoder(this._bitBuffer);

            mutations.push(fieldPath.code, value);
        });

        return mutations;
    }
}

export default EntityMutationExtractor;