新增增量序列化
This commit is contained in:
YHH
677
packages/core/src/ECS/Serialization/IncrementalSerializer.ts
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677
packages/core/src/ECS/Serialization/IncrementalSerializer.ts
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/**
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* 增量序列化器
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*
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* 提供高性能的增量序列化支持，只序列化变更的数据
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* 适用于网络同步、大场景存档、时间回溯等场景
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*/
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import type { IScene } from '../IScene';
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import { Entity } from '../Entity';
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import { Component } from '../Component';
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import { ComponentSerializer, SerializedComponent } from './ComponentSerializer';
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import { SerializedEntity } from './EntitySerializer';
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import { ComponentType } from '../Core/ComponentStorage';
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/**
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* 变更操作类型
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*/
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export enum ChangeOperation {
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/** 添加新实体 */
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EntityAdded = 'entity_added',
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/** 删除实体 */
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EntityRemoved = 'entity_removed',
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/** 实体属性更新 */
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EntityUpdated = 'entity_updated',
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/** 添加组件 */
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ComponentAdded = 'component_added',
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/** 删除组件 */
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ComponentRemoved = 'component_removed',
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/** 组件数据更新 */
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ComponentUpdated = 'component_updated',
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/** 场景数据更新 */
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SceneDataUpdated = 'scene_data_updated'
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}
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/**
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* 实体变更记录
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*/
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export interface EntityChange {
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/** 操作类型 */
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operation: ChangeOperation;
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/** 实体ID */
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entityId: number;
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/** 实体名称（用于Added操作） */
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entityName?: string;
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/** 实体数据（用于Added/Updated操作） */
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entityData?: Partial<SerializedEntity>;
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}
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/**
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* 组件变更记录
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*/
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export interface ComponentChange {
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/** 操作类型 */
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operation: ChangeOperation;
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/** 实体ID */
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entityId: number;
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/** 组件类型名称 */
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componentType: string;
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/** 组件数据（用于Added/Updated操作） */
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componentData?: SerializedComponent;
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}
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/**
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* 场景数据变更记录
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*/
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export interface SceneDataChange {
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/** 操作类型 */
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operation: ChangeOperation;
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/** 变更的键 */
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key: string;
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/** 新值 */
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value: any;
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/** 是否删除 */
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deleted?: boolean;
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}
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/**
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* 增量序列化数据
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*/
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export interface IncrementalSnapshot {
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/** 快照版本号 */
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version: number;
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/** 时间戳 */
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timestamp: number;
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/** 场景名称 */
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sceneName: string;
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/** 基础版本号（相对于哪个快照的增量） */
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baseVersion: number;
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/** 实体变更列表 */
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entityChanges: EntityChange[];
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/** 组件变更列表 */
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componentChanges: ComponentChange[];
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/** 场景数据变更列表 */
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sceneDataChanges: SceneDataChange[];
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}
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/**
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* 场景快照（用于对比）
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*/
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interface SceneSnapshot {
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/** 快照版本号 */
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version: number;
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/** 实体ID集合 */
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entityIds: Set<number>;
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/** 实体数据映射 */
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entities: Map<number, {
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name: string;
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tag: number;
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active: boolean;
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enabled: boolean;
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updateOrder: number;
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parentId?: number;
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}>;
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/** 组件数据映射 (entityId -> componentType -> serializedData) */
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components: Map<number, Map<string, string>>; // 使用JSON字符串存储组件数据
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/** 场景自定义数据 */
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sceneData: Map<string, string>; // 使用JSON字符串存储场景数据
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}
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/**
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* 增量序列化选项
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*/
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export interface IncrementalSerializationOptions {
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/**
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* 是否包含组件数据的深度对比
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* 默认true，设为false可提升性能但可能漏掉组件内部字段变更
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*/
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deepComponentComparison?: boolean;
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/**
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* 是否跟踪场景数据变更
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* 默认true
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*/
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trackSceneData?: boolean;
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/**
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* 是否压缩快照（使用JSON序列化）
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* 默认false，设为true可减少内存占用但增加CPU开销
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*/
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compressSnapshot?: boolean;
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}
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/**
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* 增量序列化器类
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*/
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export class IncrementalSerializer {
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/** 当前快照版本号 */
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private static snapshotVersion = 0;
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/**
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* 创建场景快照
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*
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* @param scene 要快照的场景
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* @param options 序列化选项
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* @returns 场景快照对象
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*/
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public static createSnapshot(
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scene: IScene,
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options?: IncrementalSerializationOptions
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): SceneSnapshot {
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const opts = {
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deepComponentComparison: true,
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trackSceneData: true,
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compressSnapshot: false,
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...options
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};
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const snapshot: SceneSnapshot = {
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version: ++this.snapshotVersion,
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entityIds: new Set(),
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entities: new Map(),
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components: new Map(),
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sceneData: new Map()
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};
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// 快照所有实体
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for (const entity of scene.entities.buffer) {
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snapshot.entityIds.add(entity.id);
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// 存储实体基本信息
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snapshot.entities.set(entity.id, {
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name: entity.name,
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tag: entity.tag,
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active: entity.active,
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enabled: entity.enabled,
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updateOrder: entity.updateOrder,
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parentId: entity.parent?.id
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});
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// 快照组件
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if (opts.deepComponentComparison) {
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const componentMap = new Map<string, string>();
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for (const component of entity.components) {
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const serialized = ComponentSerializer.serialize(component);
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if (serialized) {
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// 使用JSON字符串存储，便于后续对比
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componentMap.set(
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serialized.type,
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JSON.stringify(serialized.data)
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);
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}
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}
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if (componentMap.size > 0) {
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snapshot.components.set(entity.id, componentMap);
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}
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}
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}
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// 快照场景数据
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if (opts.trackSceneData) {
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for (const [key, value] of scene.sceneData) {
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snapshot.sceneData.set(key, JSON.stringify(value));
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}
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}
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return snapshot;
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}
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/**
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* 计算增量变更
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*
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* @param scene 当前场景
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* @param baseSnapshot 基础快照
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* @param options 序列化选项
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* @returns 增量快照
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*/
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public static computeIncremental(
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scene: IScene,
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baseSnapshot: SceneSnapshot,
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options?: IncrementalSerializationOptions
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): IncrementalSnapshot {
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const opts = {
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deepComponentComparison: true,
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trackSceneData: true,
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...options
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};
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const incremental: IncrementalSnapshot = {
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version: ++this.snapshotVersion,
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timestamp: Date.now(),
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sceneName: scene.name,
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baseVersion: baseSnapshot.version,
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entityChanges: [],
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componentChanges: [],
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sceneDataChanges: []
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};
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const currentEntityIds = new Set<number>();
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// 检测实体变更
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for (const entity of scene.entities.buffer) {
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currentEntityIds.add(entity.id);
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if (!baseSnapshot.entityIds.has(entity.id)) {
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// 新增实体
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incremental.entityChanges.push({
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operation: ChangeOperation.EntityAdded,
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entityId: entity.id,
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entityName: entity.name,
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entityData: {
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id: entity.id,
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name: entity.name,
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tag: entity.tag,
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active: entity.active,
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enabled: entity.enabled,
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updateOrder: entity.updateOrder,
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parentId: entity.parent?.id,
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components: [],
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children: []
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}
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});
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// 新增实体的所有组件都是新增
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for (const component of entity.components) {
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const serialized = ComponentSerializer.serialize(component);
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if (serialized) {
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incremental.componentChanges.push({
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operation: ChangeOperation.ComponentAdded,
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entityId: entity.id,
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componentType: serialized.type,
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componentData: serialized
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});
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}
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}
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} else {
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// 检查实体属性变更
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const oldData = baseSnapshot.entities.get(entity.id)!;
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const entityChanged =
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oldData.name !== entity.name ||
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oldData.tag !== entity.tag ||
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oldData.active !== entity.active ||
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oldData.enabled !== entity.enabled ||
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oldData.updateOrder !== entity.updateOrder ||
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oldData.parentId !== entity.parent?.id;
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if (entityChanged) {
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incremental.entityChanges.push({
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operation: ChangeOperation.EntityUpdated,
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entityId: entity.id,
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entityData: {
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name: entity.name,
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tag: entity.tag,
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active: entity.active,
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enabled: entity.enabled,
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updateOrder: entity.updateOrder,
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parentId: entity.parent?.id
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}
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});
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}
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// 检查组件变更
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if (opts.deepComponentComparison) {
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this.detectComponentChanges(
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entity,
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baseSnapshot,
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incremental.componentChanges
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);
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}
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}
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}
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// 检测删除的实体
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for (const oldEntityId of baseSnapshot.entityIds) {
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if (!currentEntityIds.has(oldEntityId)) {
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incremental.entityChanges.push({
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operation: ChangeOperation.EntityRemoved,
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entityId: oldEntityId
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});
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}
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}
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// 检测场景数据变更
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if (opts.trackSceneData) {
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this.detectSceneDataChanges(
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scene,
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baseSnapshot,
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incremental.sceneDataChanges
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);
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}
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return incremental;
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}
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/**
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* 检测组件变更
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*/
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private static detectComponentChanges(
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entity: Entity,
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baseSnapshot: SceneSnapshot,
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componentChanges: ComponentChange[]
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): void {
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const oldComponents = baseSnapshot.components.get(entity.id);
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const currentComponents = new Map<string, SerializedComponent>();
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// 收集当前组件
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for (const component of entity.components) {
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const serialized = ComponentSerializer.serialize(component);
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if (serialized) {
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currentComponents.set(serialized.type, serialized);
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}
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}
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// 检测新增和更新的组件
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for (const [type, serialized] of currentComponents) {
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const currentData = JSON.stringify(serialized.data);
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if (!oldComponents || !oldComponents.has(type)) {
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// 新增组件
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componentChanges.push({
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operation: ChangeOperation.ComponentAdded,
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entityId: entity.id,
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componentType: type,
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componentData: serialized
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});
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} else if (oldComponents.get(type) !== currentData) {
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// 组件数据变更
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componentChanges.push({
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operation: ChangeOperation.ComponentUpdated,
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entityId: entity.id,
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componentType: type,
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componentData: serialized
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});
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}
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}
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// 检测删除的组件
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if (oldComponents) {
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for (const oldType of oldComponents.keys()) {
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if (!currentComponents.has(oldType)) {
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componentChanges.push({
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operation: ChangeOperation.ComponentRemoved,
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entityId: entity.id,
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componentType: oldType
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});
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}
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}
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}
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}
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/**
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* 检测场景数据变更
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*/
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private static detectSceneDataChanges(
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scene: IScene,
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baseSnapshot: SceneSnapshot,
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sceneDataChanges: SceneDataChange[]
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): void {
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const currentKeys = new Set<string>();
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// 检测新增和更新的场景数据
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for (const [key, value] of scene.sceneData) {
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currentKeys.add(key);
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const currentValue = JSON.stringify(value);
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const oldValue = baseSnapshot.sceneData.get(key);
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if (!oldValue || oldValue !== currentValue) {
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sceneDataChanges.push({
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operation: ChangeOperation.SceneDataUpdated,
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key,
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value
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});
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}
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}
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// 检测删除的场景数据
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for (const oldKey of baseSnapshot.sceneData.keys()) {
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if (!currentKeys.has(oldKey)) {
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sceneDataChanges.push({
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operation: ChangeOperation.SceneDataUpdated,
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key: oldKey,
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value: undefined,
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deleted: true
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});
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}
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}
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}
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/**
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* 应用增量变更到场景
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*
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* @param scene 目标场景
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* @param incremental 增量快照
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* @param componentRegistry 组件类型注册表
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*/
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public static applyIncremental(
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scene: IScene,
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incremental: IncrementalSnapshot,
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componentRegistry: Map<string, ComponentType>
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): void {
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// 应用实体变更
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for (const change of incremental.entityChanges) {
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switch (change.operation) {
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case ChangeOperation.EntityAdded:
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this.applyEntityAdded(scene, change);
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break;
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case ChangeOperation.EntityRemoved:
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this.applyEntityRemoved(scene, change);
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break;
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case ChangeOperation.EntityUpdated:
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this.applyEntityUpdated(scene, change);
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break;
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}
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}
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// 应用组件变更
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for (const change of incremental.componentChanges) {
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switch (change.operation) {
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case ChangeOperation.ComponentAdded:
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this.applyComponentAdded(scene, change, componentRegistry);
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break;
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case ChangeOperation.ComponentRemoved:
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this.applyComponentRemoved(scene, change, componentRegistry);
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break;
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case ChangeOperation.ComponentUpdated:
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this.applyComponentUpdated(scene, change, componentRegistry);
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break;
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}
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}
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// 应用场景数据变更
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for (const change of incremental.sceneDataChanges) {
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if (change.deleted) {
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scene.sceneData.delete(change.key);
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} else {
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scene.sceneData.set(change.key, change.value);
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}
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}
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}
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private static applyEntityAdded(scene: IScene, change: EntityChange): void {
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if (!change.entityData) return;
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const entity = new Entity(change.entityName || 'Entity', change.entityId);
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entity.tag = change.entityData.tag || 0;
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entity.active = change.entityData.active ?? true;
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entity.enabled = change.entityData.enabled ?? true;
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entity.updateOrder = change.entityData.updateOrder || 0;
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scene.addEntity(entity);
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}
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private static applyEntityRemoved(scene: IScene, change: EntityChange): void {
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const entity = scene.entities.findEntityById(change.entityId);
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if (entity) {
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entity.destroy();
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}
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}
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private static applyEntityUpdated(scene: IScene, change: EntityChange): void {
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if (!change.entityData) return;
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const entity = scene.entities.findEntityById(change.entityId);
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if (!entity) return;
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if (change.entityData.name !== undefined) entity.name = change.entityData.name;
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if (change.entityData.tag !== undefined) entity.tag = change.entityData.tag;
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if (change.entityData.active !== undefined) entity.active = change.entityData.active;
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if (change.entityData.enabled !== undefined) entity.enabled = change.entityData.enabled;
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if (change.entityData.updateOrder !== undefined) entity.updateOrder = change.entityData.updateOrder;
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if (change.entityData.parentId !== undefined) {
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const newParent = scene.entities.findEntityById(change.entityData.parentId);
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if (newParent && entity.parent !== newParent) {
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if (entity.parent) {
|
||||
entity.parent.removeChild(entity);
|
||||
}
|
||||
newParent.addChild(entity);
|
||||
}
|
||||
} else if (entity.parent) {
|
||||
entity.parent.removeChild(entity);
|
||||
}
|
||||
}
|
||||
|
||||
private static applyComponentAdded(
|
||||
scene: IScene,
|
||||
change: ComponentChange,
|
||||
componentRegistry: Map<string, ComponentType>
|
||||
): void {
|
||||
if (!change.componentData) return;
|
||||
|
||||
const entity = scene.entities.findEntityById(change.entityId);
|
||||
if (!entity) return;
|
||||
|
||||
const component = ComponentSerializer.deserialize(change.componentData, componentRegistry);
|
||||
if (component) {
|
||||
entity.addComponent(component);
|
||||
}
|
||||
}
|
||||
|
||||
private static applyComponentRemoved(
|
||||
scene: IScene,
|
||||
change: ComponentChange,
|
||||
componentRegistry: Map<string, ComponentType>
|
||||
): void {
|
||||
const entity = scene.entities.findEntityById(change.entityId);
|
||||
if (!entity) return;
|
||||
|
||||
const componentClass = componentRegistry.get(change.componentType);
|
||||
if (!componentClass) return;
|
||||
|
||||
entity.removeComponentByType(componentClass);
|
||||
}
|
||||
|
||||
private static applyComponentUpdated(
|
||||
scene: IScene,
|
||||
change: ComponentChange,
|
||||
componentRegistry: Map<string, ComponentType>
|
||||
): void {
|
||||
if (!change.componentData) return;
|
||||
|
||||
const entity = scene.entities.findEntityById(change.entityId);
|
||||
if (!entity) return;
|
||||
|
||||
const componentClass = componentRegistry.get(change.componentType);
|
||||
if (!componentClass) return;
|
||||
|
||||
entity.removeComponentByType(componentClass);
|
||||
|
||||
const component = ComponentSerializer.deserialize(change.componentData, componentRegistry);
|
||||
if (component) {
|
||||
entity.addComponent(component);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* 序列化增量快照为JSON
|
||||
*
|
||||
* @param incremental 增量快照
|
||||
* @param pretty 是否美化输出
|
||||
* @returns JSON字符串
|
||||
*/
|
||||
public static serializeIncremental(
|
||||
incremental: IncrementalSnapshot,
|
||||
pretty: boolean = false
|
||||
): string {
|
||||
return pretty
|
||||
? JSON.stringify(incremental, null, 2)
|
||||
: JSON.stringify(incremental);
|
||||
}
|
||||
|
||||
/**
|
||||
* 从JSON反序列化增量快照
|
||||
*
|
||||
* @param json JSON字符串
|
||||
* @returns 增量快照
|
||||
*/
|
||||
public static deserializeIncremental(json: string): IncrementalSnapshot {
|
||||
return JSON.parse(json);
|
||||
}
|
||||
|
||||
/**
|
||||
* 计算增量快照的大小（字节）
|
||||
*
|
||||
* @param incremental 增量快照
|
||||
* @returns 字节数
|
||||
*/
|
||||
public static getIncrementalSize(incremental: IncrementalSnapshot): number {
|
||||
const json = this.serializeIncremental(incremental);
|
||||
return new Blob([json]).size;
|
||||
}
|
||||
|
||||
/**
|
||||
* 获取增量快照的统计信息
|
||||
*
|
||||
* @param incremental 增量快照
|
||||
* @returns 统计信息
|
||||
*/
|
||||
public static getIncrementalStats(incremental: IncrementalSnapshot): {
|
||||
totalChanges: number;
|
||||
entityChanges: number;
|
||||
componentChanges: number;
|
||||
sceneDataChanges: number;
|
||||
addedEntities: number;
|
||||
removedEntities: number;
|
||||
updatedEntities: number;
|
||||
addedComponents: number;
|
||||
removedComponents: number;
|
||||
updatedComponents: number;
|
||||
} {
|
||||
return {
|
||||
totalChanges:
|
||||
incremental.entityChanges.length +
|
||||
incremental.componentChanges.length +
|
||||
incremental.sceneDataChanges.length,
|
||||
entityChanges: incremental.entityChanges.length,
|
||||
componentChanges: incremental.componentChanges.length,
|
||||
sceneDataChanges: incremental.sceneDataChanges.length,
|
||||
addedEntities: incremental.entityChanges.filter(
|
||||
c => c.operation === ChangeOperation.EntityAdded
|
||||
).length,
|
||||
removedEntities: incremental.entityChanges.filter(
|
||||
c => c.operation === ChangeOperation.EntityRemoved
|
||||
).length,
|
||||
updatedEntities: incremental.entityChanges.filter(
|
||||
c => c.operation === ChangeOperation.EntityUpdated
|
||||
).length,
|
||||
addedComponents: incremental.componentChanges.filter(
|
||||
c => c.operation === ChangeOperation.ComponentAdded
|
||||
).length,
|
||||
removedComponents: incremental.componentChanges.filter(
|
||||
c => c.operation === ChangeOperation.ComponentRemoved
|
||||
).length,
|
||||
updatedComponents: incremental.componentChanges.filter(
|
||||
c => c.operation === ChangeOperation.ComponentUpdated
|
||||
).length
|
||||
};
|
||||
}
|
||||
|
||||
/**
|
||||
* 重置快照版本号（用于测试）
|
||||
*/
|
||||
public static resetVersion(): void {
|
||||
this.snapshotVersion = 0;
|
||||
}
|
||||
}
|
||||
@@ -49,3 +49,13 @@ export type {
|
||||
ComponentMigrationFunction,
|
||||
SceneMigrationFunction
|
||||
} from './VersionMigration';
|
||||
|
||||
// 增量序列化
|
||||
export { IncrementalSerializer, ChangeOperation } from './IncrementalSerializer';
|
||||
export type {
|
||||
IncrementalSnapshot,
|
||||
IncrementalSerializationOptions,
|
||||
EntityChange,
|
||||
ComponentChange,
|
||||
SceneDataChange
|
||||
} from './IncrementalSerializer';
|
||||
|
||||
Reference in New Issue
Block a user