2025-06-09 14:51:26 +08:00
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import { Entity } from '../Entity';
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import { PerformanceMonitor } from '../../Utils/PerformanceMonitor';
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import { Matcher } from '../Utils/Matcher';
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import type { Scene } from '../Scene';
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import type { ISystemBase } from '../../Types';
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import type { QuerySystem } from '../Core/QuerySystem';
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import { getSystemInstanceTypeName } from '../Decorators';
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2025-06-09 14:51:26 +08:00
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/**
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* 实体系统的基类
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*
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* 用于处理一组符合特定条件的实体。系统是ECS架构中的逻辑处理单元,
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* 负责对拥有特定组件组合的实体执行业务逻辑。
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*
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* @example
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* ```typescript
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* class MovementSystem extends EntitySystem {
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* constructor() {
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* super(Transform, Velocity);
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* }
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*
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* protected process(entities: Entity[]): void {
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* for (const entity of entities) {
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* const transform = entity.getComponent(Transform);
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* const velocity = entity.getComponent(Velocity);
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* transform.position.add(velocity.value);
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* }
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* }
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* }
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* ```
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*/
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export abstract class EntitySystem implements ISystemBase {
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private _updateOrder: number = 0;
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private _enabled: boolean = true;
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private _performanceMonitor = PerformanceMonitor.instance;
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private _systemName: string;
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private _initialized: boolean = false;
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private _matcher: Matcher;
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private _trackedEntities: Set<Entity> = new Set();
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/**
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* 获取系统处理的实体列表(动态查询)
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*/
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public get entities(): readonly Entity[] {
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return this.queryEntities();
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}
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/**
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* 获取系统的更新时序
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*/
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public get updateOrder(): number {
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return this._updateOrder;
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}
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public set updateOrder(value: number) {
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this.setUpdateOrder(value);
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}
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/**
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* 获取系统的启用状态
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*/
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public get enabled(): boolean {
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return this._enabled;
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}
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/**
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* 设置系统的启用状态
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*/
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public set enabled(value: boolean) {
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this._enabled = value;
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}
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/**
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* 获取系统名称
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*/
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public get systemName(): string {
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return this._systemName;
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}
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constructor(matcher?: Matcher) {
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this._matcher = matcher ? matcher : Matcher.empty();
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this._systemName = getSystemInstanceTypeName(this);
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}
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private _scene: Scene | null = null;
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/**
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* 这个系统所属的场景
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*/
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public get scene(): Scene | null {
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return this._scene;
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}
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public set scene(value: Scene | null) {
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this._scene = value;
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}
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/**
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* 获取实体匹配器
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*/
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public get matcher(): Matcher {
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return this._matcher;
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}
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/**
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* 设置更新时序
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* @param order 更新时序
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*/
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public setUpdateOrder(order: number): void {
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this._updateOrder = order;
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if (this.scene && this.scene.entityProcessors) {
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this.scene.entityProcessors.setDirty();
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}
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}
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/**
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* 系统初始化(框架调用)
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*
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* 在系统创建时调用。框架内部使用,用户不应直接调用。
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*/
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public initialize(): void {
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// 防止重复初始化
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if (this._initialized) {
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return;
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}
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this._initialized = true;
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// 框架内部初始化:触发一次实体查询,以便正确跟踪现有实体
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if (this.scene) {
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this.queryEntities();
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}
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// 调用用户可重写的初始化方法
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this.onInitialize();
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}
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/**
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* 系统初始化回调
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*
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* 子类可以重写此方法进行初始化操作。
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*/
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protected onInitialize(): void {
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// 子类可以重写此方法进行初始化
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}
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/**
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* 重置系统状态
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*
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* 当系统从场景中移除时调用,重置初始化状态以便重新添加时能正确初始化。
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*/
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public reset(): void {
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this._initialized = false;
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this._trackedEntities.clear();
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}
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/**
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* 查询匹配的实体
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*/
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private queryEntities(): Entity[] {
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if (!this.scene?.querySystem || !this._matcher) {
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return [];
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}
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const condition = this._matcher.getCondition();
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const querySystem = this.scene.querySystem;
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let currentEntities: Entity[] = [];
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// 空条件返回所有实体
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if (this._matcher.isEmpty()) {
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currentEntities = querySystem.getAllEntities();
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} else if (this.isSingleCondition(condition)) {
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// 单一条件优化查询
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currentEntities = this.executeSingleConditionQuery(condition, querySystem);
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} else {
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// 复合查询
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currentEntities = this.executeComplexQuery(condition, querySystem);
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}
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// 检查实体变化并触发回调
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this.updateEntityTracking(currentEntities);
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return currentEntities;
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}
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/**
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* 检查是否为单一条件查询
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*/
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private isSingleCondition(condition: any): boolean {
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const conditionCount =
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(condition.all.length > 0 ? 1 : 0) +
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(condition.any.length > 0 ? 1 : 0) +
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(condition.none.length > 0 ? 1 : 0) +
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(condition.tag !== undefined ? 1 : 0) +
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(condition.name !== undefined ? 1 : 0) +
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(condition.component !== undefined ? 1 : 0);
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return conditionCount === 1;
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}
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/**
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* 执行单一条件查询
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*/
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private executeSingleConditionQuery(condition: any, querySystem: any): Entity[] {
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// 按标签查询
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if (condition.tag !== undefined) {
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return querySystem.queryByTag(condition.tag).entities;
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}
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// 按名称查询
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if (condition.name !== undefined) {
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return querySystem.queryByName(condition.name).entities;
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}
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// 单组件查询
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if (condition.component !== undefined) {
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return querySystem.queryByComponent(condition.component).entities;
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}
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// 基础组件查询
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if (condition.all.length > 0 && condition.any.length === 0 && condition.none.length === 0) {
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return querySystem.queryAll(...condition.all).entities;
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}
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if (condition.all.length === 0 && condition.any.length > 0 && condition.none.length === 0) {
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return querySystem.queryAny(...condition.any).entities;
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}
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if (condition.all.length === 0 && condition.any.length === 0 && condition.none.length > 0) {
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return querySystem.queryNone(...condition.none).entities;
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}
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return [];
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}
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/**
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* 执行复合查询
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*/
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private executeComplexQueryWithIdSets(condition: any, querySystem: QuerySystem): Entity[] {
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let resultIds: Set<number> | null = null;
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// 1. 应用标签条件作为基础集合
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if (condition.tag !== undefined) {
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const tagResult = querySystem.queryByTag(condition.tag);
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resultIds = this.extractEntityIds(tagResult.entities);
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}
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// 2. 应用名称条件 (交集)
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if (condition.name !== undefined) {
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const nameIds = this.extractEntityIds(querySystem.queryByName(condition.name).entities);
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resultIds = resultIds ? this.intersectIdSets(resultIds, nameIds) : nameIds;
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}
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// 3. 应用单组件条件 (交集)
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if (condition.component !== undefined) {
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2025-09-02 17:17:07 +08:00
|
|
|
|
const componentIds = this.extractEntityIds(querySystem.queryByComponent(condition.component).entities);
|
|
|
|
|
|
resultIds = resultIds ? this.intersectIdSets(resultIds, componentIds) : componentIds;
|
2025-07-31 11:56:04 +08:00
|
|
|
|
}
|
|
|
|
|
|
|
2025-09-02 17:17:07 +08:00
|
|
|
|
// 4. 应用all条件 (交集)
|
2025-07-31 11:56:04 +08:00
|
|
|
|
if (condition.all.length > 0) {
|
2025-09-02 17:17:07 +08:00
|
|
|
|
const allIds = this.extractEntityIds(querySystem.queryAll(...condition.all).entities);
|
|
|
|
|
|
resultIds = resultIds ? this.intersectIdSets(resultIds, allIds) : allIds;
|
2025-07-31 11:56:04 +08:00
|
|
|
|
}
|
|
|
|
|
|
|
2025-09-02 17:17:07 +08:00
|
|
|
|
// 5. 应用any条件 (交集)
|
2025-07-31 11:56:04 +08:00
|
|
|
|
if (condition.any.length > 0) {
|
2025-09-02 17:17:07 +08:00
|
|
|
|
const anyIds = this.extractEntityIds(querySystem.queryAny(...condition.any).entities);
|
|
|
|
|
|
resultIds = resultIds ? this.intersectIdSets(resultIds, anyIds) : anyIds;
|
2025-07-31 11:56:04 +08:00
|
|
|
|
}
|
|
|
|
|
|
|
2025-09-02 17:17:07 +08:00
|
|
|
|
// 6. 应用none条件 (差集)
|
2025-07-31 11:56:04 +08:00
|
|
|
|
if (condition.none.length > 0) {
|
2025-09-02 17:17:07 +08:00
|
|
|
|
if (!resultIds) {
|
|
|
|
|
|
resultIds = this.extractEntityIds(querySystem.getAllEntities());
|
2025-07-31 11:56:04 +08:00
|
|
|
|
}
|
2025-08-14 18:35:03 +08:00
|
|
|
|
|
2025-07-31 11:56:04 +08:00
|
|
|
|
const noneResult = querySystem.queryAny(...condition.none);
|
2025-09-02 17:17:07 +08:00
|
|
|
|
const noneIds = this.extractEntityIds(noneResult.entities);
|
|
|
|
|
|
resultIds = this.differenceIdSets(resultIds, noneIds);
|
2025-07-31 11:56:04 +08:00
|
|
|
|
}
|
|
|
|
|
|
|
2025-09-02 17:17:07 +08:00
|
|
|
|
return resultIds ? this.idSetToEntityArray(resultIds, querySystem.getAllEntities()) : [];
|
|
|
|
|
|
}
|
2025-08-14 18:35:03 +08:00
|
|
|
|
|
2025-09-02 17:17:07 +08:00
|
|
|
|
/**
|
|
|
|
|
|
* 提取实体ID集合
|
|
|
|
|
|
*/
|
|
|
|
|
|
private extractEntityIds(entities: Entity[]): Set<number> {
|
|
|
|
|
|
const idSet = new Set<number>();
|
|
|
|
|
|
for (let i = 0; i < entities.length; i++) {
|
|
|
|
|
|
idSet.add(entities[i].id);
|
|
|
|
|
|
}
|
|
|
|
|
|
return idSet;
|
|
|
|
|
|
}
|
2025-08-14 18:35:03 +08:00
|
|
|
|
|
2025-09-02 17:17:07 +08:00
|
|
|
|
/**
|
|
|
|
|
|
* ID集合交集运算
|
|
|
|
|
|
*
|
|
|
|
|
|
* 使用单次扫描算法,选择较小集合进行迭代以提高效率
|
|
|
|
|
|
*/
|
|
|
|
|
|
private intersectIdSets(setA: Set<number>, setB: Set<number>): Set<number> {
|
|
|
|
|
|
const [smaller, larger] = setA.size <= setB.size ? [setA, setB] : [setB, setA];
|
|
|
|
|
|
const result = new Set<number>();
|
|
|
|
|
|
|
|
|
|
|
|
for (const id of smaller) {
|
|
|
|
|
|
if (larger.has(id)) {
|
|
|
|
|
|
result.add(id);
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
return result;
|
2025-06-09 14:51:26 +08:00
|
|
|
|
}
|
|
|
|
|
|
|
2025-09-02 17:17:07 +08:00
|
|
|
|
/**
|
|
|
|
|
|
* ID集合差集运算
|
|
|
|
|
|
*
|
|
|
|
|
|
* 使用单次扫描算法计算setA - setB
|
|
|
|
|
|
*/
|
|
|
|
|
|
private differenceIdSets(setA: Set<number>, setB: Set<number>): Set<number> {
|
|
|
|
|
|
const result = new Set<number>();
|
|
|
|
|
|
|
|
|
|
|
|
for (const id of setA) {
|
|
|
|
|
|
if (!setB.has(id)) {
|
|
|
|
|
|
result.add(id);
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
return result;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* 从ID集合构建Entity数组
|
|
|
|
|
|
*
|
|
|
|
|
|
* 先构建ID到Entity的映射,然后根据ID集合构建结果数组
|
|
|
|
|
|
*/
|
|
|
|
|
|
private idSetToEntityArray(idSet: Set<number>, allEntities: Entity[]): Entity[] {
|
|
|
|
|
|
const entityMap = new Map<number, Entity>();
|
|
|
|
|
|
for (const entity of allEntities) {
|
|
|
|
|
|
entityMap.set(entity.id, entity);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
const result: Entity[] = [];
|
|
|
|
|
|
for (const id of idSet) {
|
|
|
|
|
|
const entity = entityMap.get(id);
|
|
|
|
|
|
if (entity) {
|
|
|
|
|
|
result.push(entity);
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
2025-07-31 11:56:04 +08:00
|
|
|
|
|
2025-09-02 17:17:07 +08:00
|
|
|
|
return result;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* 执行复合查询
|
|
|
|
|
|
*
|
|
|
|
|
|
* 使用基于ID集合的单次扫描算法进行复杂查询
|
|
|
|
|
|
*/
|
|
|
|
|
|
private executeComplexQuery(condition: any, querySystem: QuerySystem): Entity[] {
|
|
|
|
|
|
return this.executeComplexQueryWithIdSets(condition, querySystem);
|
|
|
|
|
|
}
|
2025-08-14 18:35:03 +08:00
|
|
|
|
|
2025-06-09 14:51:26 +08:00
|
|
|
|
/**
|
|
|
|
|
|
* 更新系统
|
|
|
|
|
|
*
|
|
|
|
|
|
* 在每帧调用,处理系统的主要逻辑。
|
|
|
|
|
|
*/
|
|
|
|
|
|
public update(): void {
|
2025-07-31 11:56:04 +08:00
|
|
|
|
if (!this._enabled || !this.onCheckProcessing()) {
|
2025-06-09 14:51:26 +08:00
|
|
|
|
return;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
const startTime = this._performanceMonitor.startMonitoring(this._systemName);
|
2025-07-31 11:56:04 +08:00
|
|
|
|
let entityCount = 0;
|
2025-08-14 18:35:03 +08:00
|
|
|
|
|
2025-06-09 14:51:26 +08:00
|
|
|
|
try {
|
2025-07-31 11:56:04 +08:00
|
|
|
|
this.onBegin();
|
|
|
|
|
|
// 动态查询实体并处理
|
|
|
|
|
|
const entities = this.queryEntities();
|
|
|
|
|
|
entityCount = entities.length;
|
2025-08-14 18:35:03 +08:00
|
|
|
|
|
2025-07-31 11:56:04 +08:00
|
|
|
|
this.process(entities);
|
2025-06-09 14:51:26 +08:00
|
|
|
|
} finally {
|
2025-07-31 11:56:04 +08:00
|
|
|
|
this._performanceMonitor.endMonitoring(this._systemName, startTime, entityCount);
|
2025-06-09 14:51:26 +08:00
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* 后期更新系统
|
|
|
|
|
|
*
|
|
|
|
|
|
* 在所有系统的update方法执行完毕后调用。
|
|
|
|
|
|
*/
|
|
|
|
|
|
public lateUpdate(): void {
|
2025-07-31 11:56:04 +08:00
|
|
|
|
if (!this._enabled || !this.onCheckProcessing()) {
|
2025-06-09 14:51:26 +08:00
|
|
|
|
return;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
const startTime = this._performanceMonitor.startMonitoring(`${this._systemName}_Late`);
|
2025-07-31 11:56:04 +08:00
|
|
|
|
let entityCount = 0;
|
2025-08-14 18:35:03 +08:00
|
|
|
|
|
2025-06-09 14:51:26 +08:00
|
|
|
|
try {
|
2025-07-31 11:56:04 +08:00
|
|
|
|
// 动态查询实体并处理
|
|
|
|
|
|
const entities = this.queryEntities();
|
|
|
|
|
|
entityCount = entities.length;
|
|
|
|
|
|
this.lateProcess(entities);
|
|
|
|
|
|
this.onEnd();
|
2025-06-09 14:51:26 +08:00
|
|
|
|
} finally {
|
2025-07-31 11:56:04 +08:00
|
|
|
|
this._performanceMonitor.endMonitoring(`${this._systemName}_Late`, startTime, entityCount);
|
2025-06-09 14:51:26 +08:00
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* 在系统处理开始前调用
|
|
|
|
|
|
*
|
|
|
|
|
|
* 子类可以重写此方法进行预处理操作。
|
|
|
|
|
|
*/
|
2025-07-31 11:56:04 +08:00
|
|
|
|
protected onBegin(): void {
|
2025-06-09 14:51:26 +08:00
|
|
|
|
// 子类可以重写此方法
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* 处理实体列表
|
|
|
|
|
|
*
|
|
|
|
|
|
* 系统的核心逻辑,子类必须实现此方法来定义具体的处理逻辑。
|
|
|
|
|
|
*
|
|
|
|
|
|
* @param entities 要处理的实体列表
|
|
|
|
|
|
*/
|
2025-08-14 18:35:03 +08:00
|
|
|
|
protected process(_entities: Entity[]): void {
|
2025-06-09 14:51:26 +08:00
|
|
|
|
// 子类必须实现此方法
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* 后期处理实体列表
|
|
|
|
|
|
*
|
|
|
|
|
|
* 在主要处理逻辑之后执行,子类可以重写此方法。
|
|
|
|
|
|
*
|
|
|
|
|
|
* @param entities 要处理的实体列表
|
|
|
|
|
|
*/
|
2025-08-14 18:35:03 +08:00
|
|
|
|
protected lateProcess(_entities: Entity[]): void {
|
2025-06-09 14:51:26 +08:00
|
|
|
|
// 子类可以重写此方法
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* 系统处理完毕后调用
|
|
|
|
|
|
*
|
|
|
|
|
|
* 子类可以重写此方法进行后处理操作。
|
|
|
|
|
|
*/
|
2025-07-31 11:56:04 +08:00
|
|
|
|
protected onEnd(): void {
|
2025-06-09 14:51:26 +08:00
|
|
|
|
// 子类可以重写此方法
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* 检查系统是否需要处理
|
|
|
|
|
|
*
|
|
|
|
|
|
* 在启用系统时有用,但仅偶尔需要处理。
|
|
|
|
|
|
* 这只影响处理,不影响事件或订阅列表。
|
|
|
|
|
|
*
|
|
|
|
|
|
* @returns 如果系统应该处理,则为true,如果不处理则为false
|
|
|
|
|
|
*/
|
2025-07-31 11:56:04 +08:00
|
|
|
|
protected onCheckProcessing(): boolean {
|
2025-06-09 14:51:26 +08:00
|
|
|
|
return true;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* 获取系统的性能数据
|
|
|
|
|
|
*
|
|
|
|
|
|
* @returns 性能数据或undefined
|
|
|
|
|
|
*/
|
|
|
|
|
|
public getPerformanceData() {
|
|
|
|
|
|
return this._performanceMonitor.getSystemData(this._systemName);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* 获取系统的性能统计
|
|
|
|
|
|
*
|
|
|
|
|
|
* @returns 性能统计或undefined
|
|
|
|
|
|
*/
|
|
|
|
|
|
public getPerformanceStats() {
|
|
|
|
|
|
return this._performanceMonitor.getSystemStats(this._systemName);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* 重置系统的性能数据
|
|
|
|
|
|
*/
|
|
|
|
|
|
public resetPerformanceData(): void {
|
|
|
|
|
|
this._performanceMonitor.resetSystem(this._systemName);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* 获取系统信息的字符串表示
|
|
|
|
|
|
*
|
|
|
|
|
|
* @returns 系统信息字符串
|
|
|
|
|
|
*/
|
|
|
|
|
|
public toString(): string {
|
2025-07-31 11:56:04 +08:00
|
|
|
|
const entityCount = this.entities.length;
|
2025-06-09 14:51:26 +08:00
|
|
|
|
const perfData = this.getPerformanceData();
|
|
|
|
|
|
const perfInfo = perfData ? ` (${perfData.executionTime.toFixed(2)}ms)` : '';
|
2025-08-14 18:35:03 +08:00
|
|
|
|
|
2025-06-09 14:51:26 +08:00
|
|
|
|
return `${this._systemName}[${entityCount} entities]${perfInfo}`;
|
|
|
|
|
|
}
|
2025-08-06 09:39:08 +08:00
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* 更新实体跟踪,检查新增和移除的实体
|
|
|
|
|
|
*/
|
|
|
|
|
|
private updateEntityTracking(currentEntities: Entity[]): void {
|
|
|
|
|
|
const currentSet = new Set(currentEntities);
|
2025-08-14 18:35:03 +08:00
|
|
|
|
|
2025-08-06 09:39:08 +08:00
|
|
|
|
// 检查新增的实体
|
|
|
|
|
|
for (const entity of currentEntities) {
|
|
|
|
|
|
if (!this._trackedEntities.has(entity)) {
|
|
|
|
|
|
this._trackedEntities.add(entity);
|
|
|
|
|
|
this.onAdded(entity);
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
2025-08-14 18:35:03 +08:00
|
|
|
|
|
2025-08-06 09:39:08 +08:00
|
|
|
|
// 检查移除的实体
|
|
|
|
|
|
for (const entity of this._trackedEntities) {
|
|
|
|
|
|
if (!currentSet.has(entity)) {
|
|
|
|
|
|
this._trackedEntities.delete(entity);
|
|
|
|
|
|
this.onRemoved(entity);
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
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}
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/**
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* 当实体被添加到系统时调用
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*
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* 子类可以重写此方法来处理实体添加事件。
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*
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* @param entity 被添加的实体
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*/
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protected onAdded(_entity: Entity): void {
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// 子类可以重写此方法
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}
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/**
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* 当实体从系统中移除时调用
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*
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* 子类可以重写此方法来处理实体移除事件。
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*
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* @param entity 被移除的实体
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*/
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protected onRemoved(_entity: Entity): void {
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// 子类可以重写此方法
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}
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2025-07-31 11:56:04 +08:00
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}
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