docs(editor): improve editor-app build documentation and add build:rapier2d script

- Add `pnpm build:rapier2d` command to automate Rapier2D WASM build process
- Fix gen-src.mjs path to correctly locate thirdparty/rapier.js
- Update init.ts to work with new wasm-pack web target (auto-initialization)
- Fix behavior-tree-editor build config for asset-system dependency
- Update README_CN.md and README.md with simplified build instructions

package.json

@@ -74,6 +74,7 @@
     "lint:fix": "turbo run lint:fix",
     "build:wasm": "cd packages/rust/engine && wasm-pack build --dev --out-dir pkg",
     "build:wasm:release": "cd packages/rust/engine && wasm-pack build --release --out-dir pkg",
+    "build:rapier2d": "node scripts/build-rapier2d.mjs",
     "copy-modules": "node scripts/copy-engine-modules.mjs"
   },
   "author": "yhh",

packages/editor/editor-app/README.md

@@ -8,12 +8,23 @@ Before running the editor, ensure you have the following installed:
 
 - **Node.js** >= 18.x
 - **pnpm** >= 10.x
-- **Rust** >= 1.70 (for Tauri)
+- **Rust** >= 1.70 (for Tauri and WASM builds)
+- **wasm-pack** (for building Rapier2D physics engine)
 - **Platform-specific dependencies**:
   - **Windows**: Microsoft Visual Studio C++ Build Tools
   - **macOS**: Xcode Command Line Tools (`xcode-select --install`)
   - **Linux**: See [Tauri prerequisites](https://tauri.app/v1/guides/getting-started/prerequisites)
 
+### Installing wasm-pack
+
+```bash
+# Using cargo
+cargo install wasm-pack
+
+# Or using the official installer script (Linux/macOS)
+curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh
+```
+
 ## Quick Start
 
 ### 1. Clone and Install
@@ -24,7 +35,23 @@ cd esengine
 pnpm install
 ```
 
-### 2. Build Dependencies
+### 2. Build Rapier2D WASM
+
+The editor depends on Rapier2D physics engine WASM artifacts. First-time setup only requires one command:
+
+```bash
+pnpm build:rapier2d
+```
+
+This command automatically:
+1. Prepares the Rust project
+2. Builds WASM
+3. Copies artifacts to `packages/physics/rapier2d/pkg`
+4. Generates TypeScript source code
+
+> **Note**: Requires Rust and wasm-pack to be installed.
+
+### 3. Build Editor
 
 From the project root:
 
@@ -32,7 +59,7 @@ From the project root:
 pnpm build:editor
 ```
 
-### 3. Run Editor
+### 4. Run Editor
 
 ```bash
 cd packages/editor/editor-app
@@ -43,6 +70,8 @@ pnpm tauri:dev
 
 | Script | Description |
 |--------|-------------|
+| `pnpm build:rapier2d` | Build Rapier2D WASM (required for first-time setup) |
+| `pnpm build:editor` | Build editor and all dependencies |
 | `pnpm tauri:dev` | Run editor in development mode with hot-reload |
 | `pnpm tauri:build` | Build production application |
 | `pnpm build:sdk` | Build editor-runtime SDK |
@@ -62,6 +91,17 @@ editor-app/
 
 ## Troubleshooting
 
+### Rapier2D WASM Build Failed
+
+**Error**: `Could not resolve "../pkg/rapier_wasm2d"`
+
+**Cause**: Missing Rapier2D WASM artifacts.
+
+**Solution**:
+1. Ensure `wasm-pack` is installed: `cargo install wasm-pack`
+2. Run `pnpm build:rapier2d`
+3. Verify `packages/physics/rapier2d/pkg/` directory exists and contains `rapier_wasm2d_bg.wasm` file
+
 ### Build Errors
 
 ```bash
@@ -76,6 +116,12 @@ pnpm build:editor
 rustup update
 ```
 
+### Windows Users Building WASM
+
+The `pnpm build:rapier2d` script works directly on Windows. If you encounter issues:
+1. Use Git Bash or WSL
+2. Or download pre-built WASM artifacts from [Releases](https://github.com/esengine/esengine/releases)
+
 ## Documentation
 
 - [ESEngine Documentation](https://esengine.cn/)

packages/editor/editor-app/README_CN.md

@@ -8,12 +8,23 @@
 
 - **Node.js** >= 18.x
 - **pnpm** >= 10.x
-- **Rust** >= 1.70 (Tauri 需要)
+- **Rust** >= 1.70 (Tauri 和 WASM 构建需要)
+- **wasm-pack** (构建 Rapier2D 物理引擎需要)
 - **平台相关依赖**：
   - **Windows**: Microsoft Visual Studio C++ Build Tools
   - **macOS**: Xcode Command Line Tools (`xcode-select --install`)
   - **Linux**: 参考 [Tauri 环境配置](https://tauri.app/v1/guides/getting-started/prerequisites)
 
+### 安装 wasm-pack
+
+```bash
+# 使用 cargo 安装
+cargo install wasm-pack
+
+# 或使用官方安装脚本 (Linux/macOS)
+curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh
+```
+
 ## 快速开始
 
 ### 1. 克隆并安装
@@ -24,7 +35,23 @@ cd esengine
 pnpm install
 ```
 
-### 2. 构建依赖
+### 2. 构建 Rapier2D WASM
+
+编辑器依赖 Rapier2D 物理引擎的 WASM 产物。首次构建只需执行一条命令：
+
+```bash
+pnpm build:rapier2d
+```
+
+该命令会自动完成以下步骤：
+1. 准备 Rust 项目
+2. 构建 WASM
+3. 复制产物到 `packages/physics/rapier2d/pkg`
+4. 生成 TypeScript 源码
+
+> **注意**：需要已安装 Rust 和 wasm-pack。
+
+### 3. 构建编辑器
 
 在项目根目录执行：
 
@@ -32,7 +59,7 @@ pnpm install
 pnpm build:editor
 ```
 
-### 3. 启动编辑器
+### 4. 启动编辑器
 
 ```bash
 cd packages/editor/editor-app
@@ -43,6 +70,8 @@ pnpm tauri:dev
 
 | 脚本 | 说明 |
 |------|------|
+| `pnpm build:rapier2d` | 构建 Rapier2D WASM（首次构建必须执行）|
+| `pnpm build:editor` | 构建编辑器及所有依赖 |
 | `pnpm tauri:dev` | 开发模式运行编辑器（支持热重载）|
 | `pnpm tauri:build` | 构建生产版本应用 |
 | `pnpm build:sdk` | 构建 editor-runtime SDK |
@@ -62,6 +91,17 @@ editor-app/
 
 ## 常见问题
 
+### Rapier2D WASM 构建失败
+
+**错误**: `Could not resolve "../pkg/rapier_wasm2d"`
+
+**原因**: 缺少 Rapier2D 的 WASM 产物。
+
+**解决方案**:
+1. 确保已安装 `wasm-pack`：`cargo install wasm-pack`
+2. 执行 `pnpm build:rapier2d`
+3. 确认 `packages/physics/rapier2d/pkg/` 目录存在且包含 `rapier_wasm2d_bg.wasm` 文件
+
 ### 构建错误
 
 ```bash
@@ -76,6 +116,12 @@ pnpm build:editor
 rustup update
 ```
 
+### Windows 用户构建 WASM
+
+`pnpm build:rapier2d` 脚本在 Windows 上可以直接运行。如果遇到问题：
+1. 使用 Git Bash 或 WSL
+2. 或从 [Releases](https://github.com/esengine/esengine/releases) 下载预编译的 WASM 产物
+
 ## 文档
 
 - [ESEngine 文档](https://esengine.cn/)

packages/editor/plugins/behavior-tree-editor/tsconfig.build.json

@@ -8,7 +8,10 @@
         "rootDir": "./src",
         "jsx": "react-jsx",
         "skipLibCheck": true,
-        "moduleResolution": "bundler"
+        "moduleResolution": "bundler",
+        "paths": {
+            "@esengine/asset-system": ["../../../engine/asset-system/src"]
+        }
     },
     "include": ["src/**/*"],
     "exclude": ["node_modules", "dist", "**/*.test.ts"]

packages/editor/plugins/behavior-tree-editor/tsup.config.ts

@@ -2,8 +2,7 @@ import { defineConfig } from 'tsup';
 import { editorOnlyPreset } from '../../../tools/build-config/src/presets/plugin-tsup';
 
 export default defineConfig({
-    ...editorOnlyPreset({
-        external: ['@esengine/asset-system']
-    }),
-    tsconfig: 'tsconfig.build.json'
+    ...editorOnlyPreset({}),
+    tsconfig: 'tsconfig.build.json',
+    noExternal: ['@esengine/asset-system']
 });

packages/physics/rapier2d/scripts/gen-src.mjs

@@ -14,7 +14,7 @@ import { fileURLToPath } from 'url';
 
 const __dirname = dirname(fileURLToPath(import.meta.url));
 const packageRoot = join(__dirname, '..');
-const rapierRoot = join(packageRoot, '..', '..', 'thirdparty', 'rapier.js');
+const rapierRoot = join(packageRoot, '..', '..', '..', 'thirdparty', 'rapier.js');
 const srcTsDir = join(rapierRoot, 'src.ts');
 const src2dDir = join(rapierRoot, 'rapier-compat', 'src2d');
 const outputDir = join(packageRoot, 'src');

packages/physics/rapier2d/src/init.ts

@@ -1,12 +1,60 @@
-// @ts-ignore
-import wasmBase64 from "../pkg/rapier_wasm2d_bg.wasm";
+/**
+ * RAPIER initialization module with dynamic WASM loading support.
+ * RAPIER 初始化模块，支持动态 WASM 加载。
+ */
+
 import wasmInit from "../pkg/rapier_wasm2d";
-import base64 from "base64-js";
+
+/**
+ * Input types for WASM initialization.
+ * WASM 初始化的输入类型。
+ */
+export type InitInput =
+    | RequestInfo         // URL string or Request object
+    | URL                 // URL object
+    | Response            // Fetch Response object
+    | BufferSource        // ArrayBuffer or TypedArray
+    | WebAssembly.Module; // Pre-compiled module
+
+let initialized = false;
 
 /**
  * Initializes RAPIER.
  * Has to be called and awaited before using any library methods.
+ *
+ * 初始化 RAPIER。
+ * 必须在使用任何库方法之前调用并等待。
+ *
+ * @param input - WASM source (required). Can be URL, Response, ArrayBuffer, etc.
+ *                WASM 源（必需）。可以是 URL、Response、ArrayBuffer 等。
+ *
+ * @example
+ * // Load from URL | 从 URL 加载
+ * await RAPIER.init('wasm/rapier_wasm2d_bg.wasm');
+ *
+ * @example
+ * // Load from fetch response | 从 fetch 响应加载
+ * const response = await fetch('wasm/rapier_wasm2d_bg.wasm');
+ * await RAPIER.init(response);
+ *
+ * @example
+ * // Load from ArrayBuffer | 从 ArrayBuffer 加载
+ * const buffer = await fetch('wasm/rapier_wasm2d_bg.wasm').then(r => r.arrayBuffer());
+ * await RAPIER.init(buffer);
  */
-export async function init() {
-    await wasmInit(base64.toByteArray(wasmBase64 as unknown as string).buffer);
+export async function init(input?: InitInput): Promise<void> {
+    if (initialized) {
+        return;
+    }
+
+    await wasmInit(input);
+    initialized = true;
+}
+
+/**
+ * Check if RAPIER is already initialized.
+ * 检查 RAPIER 是否已初始化。
+ */
+export function isInitialized(): boolean {
+    return initialized;
 }

scripts/build-rapier2d.mjs

@@ -0,0 +1,146 @@
+#!/usr/bin/env node
+
+/**
+ * Build Rapier2D WASM artifacts
+ * 构建 Rapier2D WASM 产物
+ *
+ * This script automates the entire Rapier2D WASM build process:
+ * 此脚本自动化整个 Rapier2D WASM 构建流程：
+ *
+ * 1. Prepare Rust project from thirdparty/rapier.js
+ * 2. Build WASM using wasm-pack
+ * 3. Copy artifacts to packages/physics/rapier2d/pkg
+ * 4. Generate TypeScript source code
+ */
+
+import { execSync, spawn } from 'child_process';
+import { existsSync, cpSync, rmSync, mkdirSync } from 'fs';
+import { join, dirname } from 'path';
+import { fileURLToPath } from 'url';
+
+const __dirname = dirname(fileURLToPath(import.meta.url));
+const rootDir = join(__dirname, '..');
+const rapierJsDir = join(rootDir, 'thirdparty', 'rapier.js');
+const rapier2dBuildDir = join(rapierJsDir, 'builds', 'rapier2d');
+const rapier2dPkgSrc = join(rapier2dBuildDir, 'pkg');
+const rapier2dPkgDest = join(rootDir, 'packages', 'physics', 'rapier2d', 'pkg');
+
+/**
+ * Run a command and stream output
+ */
+function runCommand(command, cwd, description) {
+    console.log(`\n📦 ${description}...`);
+    console.log(`   Running: ${command}`);
+    console.log(`   In: ${cwd}\n`);
+
+    try {
+        execSync(command, {
+            cwd,
+            stdio: 'inherit',
+            shell: true
+        });
+        return true;
+    } catch (error) {
+        console.error(`❌ Failed: ${description}`);
+        return false;
+    }
+}
+
+/**
+ * Main build function
+ */
+async function build() {
+    console.log('🚀 Building Rapier2D WASM...\n');
+
+    // Check if rapier.js exists
+    if (!existsSync(rapierJsDir)) {
+        console.error('❌ Error: thirdparty/rapier.js not found!');
+        console.error('   Please clone it first:');
+        console.error('   git clone https://github.com/esengine/rapier.js.git thirdparty/rapier.js');
+        process.exit(1);
+    }
+
+    // Check if Rust/Cargo is installed
+    try {
+        execSync('cargo --version', { stdio: 'pipe' });
+    } catch {
+        console.error('❌ Error: Rust/Cargo not found!');
+        console.error('   Please install Rust: https://rustup.rs/');
+        process.exit(1);
+    }
+
+    // Check if wasm-pack is installed
+    try {
+        execSync('wasm-pack --version', { stdio: 'pipe' });
+    } catch {
+        console.error('❌ Error: wasm-pack not found!');
+        console.error('   Please install it: cargo install wasm-pack');
+        process.exit(1);
+    }
+
+    // Step 1: Prepare Rust project
+    if (!runCommand(
+        'cargo run -p prepare_builds -- -d dim2 -f non-deterministic',
+        rapierJsDir,
+        'Step 1/4: Preparing Rust project'
+    )) {
+        process.exit(1);
+    }
+
+    // Step 2: Install npm dependencies for rapier2d build
+    if (!runCommand(
+        'npm install',
+        rapier2dBuildDir,
+        'Step 2/4: Installing npm dependencies'
+    )) {
+        process.exit(1);
+    }
+
+    // Step 3: Build WASM
+    if (!runCommand(
+        'npm run build',
+        rapier2dBuildDir,
+        'Step 3/4: Building WASM'
+    )) {
+        process.exit(1);
+    }
+
+    // Step 4: Copy pkg to packages/physics/rapier2d/pkg
+    console.log('\n📦 Step 4/4: Copying WASM artifacts...');
+    console.log(`   From: ${rapier2dPkgSrc}`);
+    console.log(`   To: ${rapier2dPkgDest}\n`);
+
+    if (!existsSync(rapier2dPkgSrc)) {
+        console.error('❌ Error: Build output not found at', rapier2dPkgSrc);
+        process.exit(1);
+    }
+
+    // Remove old pkg if exists
+    if (existsSync(rapier2dPkgDest)) {
+        rmSync(rapier2dPkgDest, { recursive: true });
+    }
+
+    // Copy new pkg
+    cpSync(rapier2dPkgSrc, rapier2dPkgDest, { recursive: true });
+    console.log('   ✅ Copied successfully!\n');
+
+    // Step 5: Generate TypeScript source
+    if (!runCommand(
+        'pnpm --filter @esengine/rapier2d gen:src',
+        rootDir,
+        'Bonus: Generating TypeScript source'
+    )) {
+        console.warn('⚠️  Warning: Failed to generate TypeScript source.');
+        console.warn('   You can run it manually: pnpm --filter @esengine/rapier2d gen:src');
+    }
+
+    console.log('\n✅ Rapier2D WASM build completed successfully!');
+    console.log('\nNext steps:');
+    console.log('  1. Run: pnpm build:editor');
+    console.log('  2. Start editor: cd packages/editor/editor-app && pnpm tauri:dev\n');
+}
+
+build().catch(error => {
+    console.error('❌ Build failed:', error);
+    process.exit(1);
+});