226 lines
9.8 KiB
TypeScript
226 lines
9.8 KiB
TypeScript
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import { EntityManager } from '../../../src/ECS/Core/EntityManager';
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import { ComponentTypeManager } from '../../../src/ECS/Utils/ComponentTypeManager';
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describe('实体创建性能分析', () => {
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let entityManager: EntityManager;
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beforeEach(() => {
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ComponentTypeManager.instance.reset();
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entityManager = new EntityManager();
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});
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test('性能分析：创建10000个实体', () => {
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const entityCount = 10000;
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console.log(`开始创建 ${entityCount} 个实体...`);
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// 预热
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for (let i = 0; i < 100; i++) {
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entityManager.createEntity(`Warmup_${i}`);
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}
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// 重新创建EntityManager来清理
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entityManager = new EntityManager();
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// 测试不同的创建方式
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console.log('\n=== 性能对比测试 ===');
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// 1. 使用默认名称（包含Date.now()）
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let startTime = performance.now();
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const entitiesWithDefaultName: any[] = [];
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for (let i = 0; i < entityCount; i++) {
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entitiesWithDefaultName.push(entityManager.createEntity());
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}
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let endTime = performance.now();
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console.log(`1. 默认名称创建: ${(endTime - startTime).toFixed(2)}ms`);
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entityManager = new EntityManager();
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// 2. 使用预设名称（避免Date.now()）
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startTime = performance.now();
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const entitiesWithPresetName: any[] = [];
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for (let i = 0; i < entityCount; i++) {
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entitiesWithPresetName.push(entityManager.createEntity(`Entity_${i}`));
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}
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endTime = performance.now();
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console.log(`2. 预设名称创建: ${(endTime - startTime).toFixed(2)}ms`);
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entityManager = new EntityManager();
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// 3. 使用相同名称（减少字符串创建）
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startTime = performance.now();
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const entitiesWithSameName: any[] = [];
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const sameName = 'SameName';
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for (let i = 0; i < entityCount; i++) {
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entitiesWithSameName.push(entityManager.createEntity(sameName));
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}
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endTime = performance.now();
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console.log(`3. 相同名称创建: ${(endTime - startTime).toFixed(2)}ms`);
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entityManager = new EntityManager();
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// 4. 直接创建Entity对象（绕过EntityManager）
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startTime = performance.now();
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const directEntities: any[] = [];
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for (let i = 0; i < entityCount; i++) {
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// 直接创建Entity，不通过EntityManager的复杂逻辑
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directEntities.push(new (require('../../../src/ECS/Entity').Entity)(`Direct_${i}`, i));
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}
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endTime = performance.now();
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console.log(`4. 直接创建Entity: ${(endTime - startTime).toFixed(2)}ms`);
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console.log('\n=== 性能分析结论 ===');
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console.log('如果相同名称创建明显更快，说明字符串操作是瓶颈');
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console.log('如果直接创建Entity更快，说明EntityManager的逻辑太重');
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});
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test('详细分析EntityManager中的性能瓶颈', () => {
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const entityCount = 1000; // 较小数量便于分析
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console.log('\n=== 详细性能分析 ===');
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// 分析各个步骤的耗时
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let totalTime = 0;
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const stepTimes: Record<string, number> = {};
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for (let i = 0; i < entityCount; i++) {
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const stepStart = performance.now();
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// 模拟EntityManager.createEntity的各个步骤
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const name = `PerfTest_${i}`;
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// 步骤1: ID分配
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let stepTime = performance.now();
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const id = entityManager['_identifierPool'].checkOut();
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stepTimes['ID分配'] = (stepTimes['ID分配'] || 0) + (performance.now() - stepTime);
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// 步骤2: Entity创建
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stepTime = performance.now();
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const entity = new (require('../../../src/ECS/Entity').Entity)(name, id);
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stepTimes['Entity创建'] = (stepTimes['Entity创建'] || 0) + (performance.now() - stepTime);
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// 步骤3: 各种索引更新
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stepTime = performance.now();
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entityManager['_entities'].set(id, entity);
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stepTimes['Map存储'] = (stepTimes['Map存储'] || 0) + (performance.now() - stepTime);
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stepTime = performance.now();
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entityManager['updateNameIndex'](entity, true);
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stepTimes['名称索引'] = (stepTimes['名称索引'] || 0) + (performance.now() - stepTime);
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stepTime = performance.now();
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entityManager['updateTagIndex'](entity, true);
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stepTimes['标签索引'] = (stepTimes['标签索引'] || 0) + (performance.now() - stepTime);
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stepTime = performance.now();
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entityManager['_componentIndexManager'].addEntity(entity);
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stepTimes['组件索引'] = (stepTimes['组件索引'] || 0) + (performance.now() - stepTime);
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stepTime = performance.now();
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entityManager['_archetypeSystem'].addEntity(entity);
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stepTimes['原型系统'] = (stepTimes['原型系统'] || 0) + (performance.now() - stepTime);
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stepTime = performance.now();
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entityManager['_dirtyTrackingSystem'].markDirty(entity, 1); // DirtyFlag.COMPONENT_ADDED
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stepTimes['脏标记'] = (stepTimes['脏标记'] || 0) + (performance.now() - stepTime);
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stepTime = performance.now();
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// 跳过事件发射，因为它涉及复杂的对象创建
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stepTimes['其他'] = (stepTimes['其他'] || 0) + (performance.now() - stepTime);
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totalTime += (performance.now() - stepStart);
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}
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console.log(`总耗时: ${totalTime.toFixed(2)}ms`);
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console.log('各步骤平均耗时:');
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for (const [step, time] of Object.entries(stepTimes)) {
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console.log(` ${step}: ${(time / entityCount * 1000).toFixed(3)}μs/entity`);
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}
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// 找出最耗时的步骤
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const maxTime = Math.max(...Object.values(stepTimes));
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const slowestStep = Object.entries(stepTimes).find(([_, time]) => time === maxTime)?.[0];
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console.log(`最耗时的步骤: ${slowestStep} (${(maxTime / entityCount * 1000).toFixed(3)}μs/entity)`);
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});
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test('测试批量创建优化方案', () => {
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const entityCount = 10000;
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console.log(`\n=== 批量创建优化测试 ===`);
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// 当前方式：逐个创建
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let startTime = performance.now();
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for (let i = 0; i < entityCount; i++) {
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entityManager.createEntity(`Current_${i}`);
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}
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let endTime = performance.now();
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const currentTime = endTime - startTime;
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console.log(`当前方式: ${currentTime.toFixed(2)}ms`);
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entityManager = new EntityManager();
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// 如果有批量创建方法的话...
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// （这里只是演示概念，实际的批量创建需要在EntityManager中实现）
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console.log('建议：实现批量创建方法，减少重复的索引更新和事件发射');
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});
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test('验证批量创建优化效果', () => {
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const entityCount = 10000;
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console.log(`\n=== 批量创建优化效果验证 ===`);
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// 测试新的批量创建方法
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let startTime = performance.now();
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const batchEntities = entityManager.createEntitiesBatch(entityCount, "Batch", false);
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let endTime = performance.now();
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const batchTime = endTime - startTime;
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console.log(`批量创建(含事件): ${batchTime.toFixed(2)}ms`);
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entityManager = new EntityManager();
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// 测试跳过事件的批量创建
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startTime = performance.now();
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const batchEntitiesNoEvents = entityManager.createEntitiesBatch(entityCount, "BatchNoEvents", true);
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endTime = performance.now();
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const batchTimeNoEvents = endTime - startTime;
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console.log(`批量创建(跳过事件): ${batchTimeNoEvents.toFixed(2)}ms`);
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entityManager = new EntityManager();
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// 对比单个创建（使用优化后的createEntity）
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startTime = performance.now();
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const singleEntities: any[] = [];
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for (let i = 0; i < entityCount; i++) {
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singleEntities.push(entityManager.createEntity(`Single_${i}`));
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}
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endTime = performance.now();
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const singleTime = endTime - startTime;
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console.log(`优化后单个创建: ${singleTime.toFixed(2)}ms`);
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console.log(`\n性能提升:`);
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console.log(`批量创建 vs 单个创建: ${(singleTime / batchTime).toFixed(1)}x faster`);
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console.log(`批量创建(跳过事件) vs 单个创建: ${(singleTime / batchTimeNoEvents).toFixed(1)}x faster`);
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// 验证功能正确性
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expect(batchEntities.length).toBe(entityCount);
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expect(batchEntitiesNoEvents.length).toBe(entityCount);
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expect(singleEntities.length).toBe(entityCount);
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});
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test('验证createEntity的Date.now()优化', () => {
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console.log(`\n=== createEntity优化验证 ===`);
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const testCount = 1000;
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// 测试优化后的默认名称生成
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let startTime = performance.now();
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for (let i = 0; i < testCount; i++) {
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entityManager.createEntity(); // 使用优化后的计数器命名
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}
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let endTime = performance.now();
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console.log(`计数器命名: ${(endTime - startTime).toFixed(2)}ms`);
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entityManager = new EntityManager();
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// 对比：模拟使用Date.now()的方式
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startTime = performance.now();
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for (let i = 0; i < testCount; i++) {
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entityManager.createEntity(`Entity_${Date.now()}_${i}`); // 模拟原来的方式
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}
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endTime = performance.now();
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console.log(`Date.now()命名: ${(endTime - startTime).toFixed(2)}ms`);
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});
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});
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