init：创建后端项目框架，确保环境的基本运行

.gitignore

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+# 依赖
+node_modules/
+yarn.lock
+package-lock.json
+
+# 构建输出
+dist/
+build/
+*.tsbuildinfo
+
+# 环境变量
+.env
+.env.local
+.env.*.local
+
+# 日志
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# 操作系统
+.DS_Store
+Thumbs.db
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+
+# 测试覆盖率
+coverage/
+.nyc_output/
+
+# 临时文件
+*.tmp
+.cache/

README.md

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+# Pixel Game Server
+
+一个基于 NestJS 的 2D 像素风游戏后端服务
+
+## 技术栈
+
+- **NestJS** - 渐进式 Node.js 框架
+- **TypeScript** - 类型安全
+- **WebSocket** - 实时通信支持
+
+## 前置要求
+
+如果还没有安装 Yarn，请先安装：
+
+```bash
+npm install -g yarn
+```
+
+## 安装依赖
+
+```bash
+yarn install
+```
+
+## 开发
+
+启动开发服务器（支持热重载）：
+
+```bash
+yarn dev
+```
+
+服务器将运行在 `http://localhost:3000`
+
+## 构建
+
+```bash
+yarn build
+```
+
+## 生产环境运行
+
+```bash
+yarn start:prod
+```
+
+## 项目结构
+
+```
+src/
+├── api/              # API 接口层（控制器、网关）
+├── config/           # 配置文件
+├── data/             # 数据访问层（数据库、缓存）
+├── model/            # 数据模型、实体、DTO
+├── service/          # 业务逻辑层
+├── utils/            # 工具函数
+├── main.ts           # 应用入口
+├── app.module.ts     # 根模块
+├── app.controller.ts # 根控制器
+└── app.service.ts    # 根服务
+test/
+├── api/              # API 测试
+└── service/          # 服务测试
+```
+
+## 下一步
+
+- 在 `src/api/` 目录下创建游戏相关的控制器和网关
+- 在 `src/model/` 目录下定义游戏数据模型
+- 在 `src/service/` 目录下实现游戏业务逻辑
+- 使用 NestJS CLI 快速生成模块：`nest g module game`
+- 添加 WebSocket 网关实现实时游戏逻辑

nest-cli.json

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+{
+  "$schema": "https://json.schemastore.org/nest-cli",
+  "collection": "@nestjs/schematics",
+  "sourceRoot": "src",
+  "compilerOptions": {
+    "deleteOutDir": true
+  }
+}

package.json

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+{
+  "name": "pixel-game-server",
+  "version": "1.0.0",
+  "description": "A 2D pixel art game server built with NestJS",
+  "main": "dist/main.js",
+  "scripts": {
+    "dev": "nest start --watch",
+    "build": "nest build",
+    "start": "node dist/main.js",
+    "start:prod": "node dist/main.js"
+  },
+  "keywords": ["game", "pixel", "2d", "server", "nestjs"],
+  "author": "",
+  "license": "MIT",
+  "dependencies": {
+    "@nestjs/common": "^10.0.0",
+    "@nestjs/core": "^10.0.0",
+    "@nestjs/platform-express": "^10.0.0",
+    "@nestjs/websockets": "^10.0.0",
+    "@nestjs/platform-socket.io": "^10.0.0",
+    "reflect-metadata": "^0.1.13",
+    "rxjs": "^7.8.1"
+  },
+  "devDependencies": {
+    "@nestjs/cli": "^10.0.0",
+    "@nestjs/schematics": "^10.0.0",
+    "@types/node": "^20.0.0",
+    "ts-node": "^10.9.0",
+    "typescript": "^5.3.0"
+  }
+}

src/app.controller.ts

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+import { Controller, Get } from '@nestjs/common';
+import { AppService } from './app.service';
+
+@Controller()
+export class AppController {
+  constructor(private readonly appService: AppService) {}
+
+  @Get()
+  getStatus(): string {
+    return this.appService.getStatus();
+  }
+}

src/app.module.ts

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+import { Module } from '@nestjs/common';
+import { AppController } from './app.controller';
+import { AppService } from './app.service';
+
+@Module({
+  imports: [],
+  controllers: [AppController],
+  providers: [AppService],
+})
+export class AppModule {}

src/app.service.ts

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+import { Injectable } from '@nestjs/common';
+
+@Injectable()
+export class AppService {
+  getStatus(): string {
+    return 'Pixel Game Server is running!';
+  }
+}

src/main.ts

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+import { NestFactory } from '@nestjs/core';
+import { AppModule } from './app.module';
+
+async function bootstrap() {
+  const app = await NestFactory.create(AppModule);
+  await app.listen(3000);
+  console.log('Pixel Game Server is running on http://localhost:3000');
+}
+
+bootstrap();

tsconfig.json

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+{
+  "compilerOptions": {
+    "target": "ES2020",
+    "module": "CommonJS",
+    "lib": ["ES2020"],
+    "moduleResolution": "node",
+    "declaration": true,
+    "removeComments": true,
+    "emitDecoratorMetadata": true,
+    "experimentalDecorators": true,
+    "allowSyntheticDefaultImports": true,
+    "strict": true,
+    "esModuleInterop": true,
+    "skipLibCheck": true,
+    "forceConsistentCasingInFileNames": true,
+    "resolveJsonModule": true,
+    "outDir": "./dist",
+    "baseUrl": "./",
+    "incremental": true,
+    "strictNullChecks": false
+  },
+  "include": ["src/**/*"],
+  "exclude": ["node_modules", "dist"]
+}