core库demo更新

examples/core-demos/src/platform/BrowserAdapter.ts

@@ -0,0 +1,204 @@
+import type {
+    IPlatformAdapter,
+    PlatformWorker,
+    WorkerCreationOptions,
+    PlatformConfig
+} from '@esengine/ecs-framework';
+
+/**
+ * 浏览器平台适配器
+ */
+export class BrowserAdapter implements IPlatformAdapter {
+    public readonly name = 'browser';
+    public readonly version: string;
+
+    constructor() {
+        this.version = this.getBrowserInfo();
+    }
+
+    /**
+     * 检查是否支持Worker
+     */
+    public isWorkerSupported(): boolean {
+        return typeof Worker !== 'undefined';
+    }
+
+    /**
+     * 检查是否支持SharedArrayBuffer
+     */
+    public isSharedArrayBufferSupported(): boolean {
+        return typeof SharedArrayBuffer !== 'undefined' && this.checkSharedArrayBufferEnabled();
+    }
+
+    /**
+     * 获取硬件并发数（CPU核心数）
+     */
+    public getHardwareConcurrency(): number {
+        return navigator.hardwareConcurrency || 4;
+    }
+
+    /**
+     * 创建Worker
+     */
+    public createWorker(script: string, options: WorkerCreationOptions = {}): PlatformWorker {
+        if (!this.isWorkerSupported()) {
+            throw new Error('浏览器不支持Worker');
+        }
+
+        try {
+            return new BrowserWorker(script, options);
+        } catch (error) {
+            throw new Error(`创建浏览器Worker失败: ${(error as Error).message}`);
+        }
+    }
+
+    /**
+     * 创建SharedArrayBuffer
+     */
+    public createSharedArrayBuffer(length: number): SharedArrayBuffer | null {
+        if (!this.isSharedArrayBufferSupported()) {
+            return null;
+        }
+
+        try {
+            return new SharedArrayBuffer(length);
+        } catch (error) {
+            console.warn('SharedArrayBuffer创建失败:', error);
+            return null;
+        }
+    }
+
+    /**
+     * 获取高精度时间戳
+     */
+    public getHighResTimestamp(): number {
+        return performance.now();
+    }
+
+    /**
+     * 获取平台配置
+     */
+    public getPlatformConfig(): PlatformConfig {
+        return {
+            maxWorkerCount: this.getHardwareConcurrency(),
+            supportsModuleWorker: false,
+            supportsTransferableObjects: true,
+            maxSharedArrayBufferSize: 1024 * 1024 * 1024, // 1GB
+            workerScriptPrefix: '',
+            limitations: {
+                noEval: false,
+                requiresWorkerInit: false
+            }
+        };
+    }
+
+    /**
+     * 获取浏览器信息
+     */
+    private getBrowserInfo(): string {
+        const userAgent = navigator.userAgent;
+        if (userAgent.includes('Chrome')) {
+            const match = userAgent.match(/Chrome\/([0-9.]+)/);
+            return match ? `Chrome ${match[1]}` : 'Chrome';
+        } else if (userAgent.includes('Firefox')) {
+            const match = userAgent.match(/Firefox\/([0-9.]+)/);
+            return match ? `Firefox ${match[1]}` : 'Firefox';
+        } else if (userAgent.includes('Safari')) {
+            const match = userAgent.match(/Version\/([0-9.]+)/);
+            return match ? `Safari ${match[1]}` : 'Safari';
+        }
+        return 'Unknown Browser';
+    }
+
+    /**
+     * 检查SharedArrayBuffer是否真正可用
+     */
+    private checkSharedArrayBufferEnabled(): boolean {
+        try {
+            new SharedArrayBuffer(8);
+            return true;
+        } catch {
+            return false;
+        }
+    }
+}
+
+/**
+ * 浏览器Worker封装
+ */
+class BrowserWorker implements PlatformWorker {
+    private _state: 'running' | 'terminated' = 'running';
+    private worker: Worker;
+
+    constructor(script: string, options: WorkerCreationOptions = {}) {
+        this.worker = this.createBrowserWorker(script, options);
+    }
+
+    public get state(): 'running' | 'terminated' {
+        return this._state;
+    }
+
+    public postMessage(message: any, transfer?: Transferable[]): void {
+        if (this._state === 'terminated') {
+            throw new Error('Worker已被终止');
+        }
+
+        try {
+            if (transfer && transfer.length > 0) {
+                this.worker.postMessage(message, transfer);
+            } else {
+                this.worker.postMessage(message);
+            }
+        } catch (error) {
+            throw new Error(`发送消息到Worker失败: ${(error as Error).message}`);
+        }
+    }
+
+    public onMessage(handler: (event: { data: any }) => void): void {
+        this.worker.onmessage = (event: MessageEvent) => {
+            handler({ data: event.data });
+        };
+    }
+
+    public onError(handler: (error: ErrorEvent) => void): void {
+        this.worker.onerror = handler;
+    }
+
+    public terminate(): void {
+        if (this._state === 'running') {
+            try {
+                this.worker.terminate();
+                this._state = 'terminated';
+            } catch (error) {
+                console.error('终止Worker失败:', error);
+            }
+        }
+    }
+
+    /**
+     * 创建浏览器Worker
+     */
+    private createBrowserWorker(script: string, options: WorkerCreationOptions): Worker {
+        try {
+            // 创建Blob URL
+            const blob = new Blob([script], { type: 'application/javascript' });
+            const url = URL.createObjectURL(blob);
+
+            // 创建Worker
+            const worker = new Worker(url, {
+                type: options.type || 'classic',
+                credentials: options.credentials,
+                name: options.name
+            });
+
+            // 清理Blob URL（延迟清理，确保Worker已加载）
+            setTimeout(() => {
+                URL.revokeObjectURL(url);
+            }, 1000);
+
+            return worker;
+        } catch (error) {
+            throw new Error(`无法创建浏览器Worker: ${(error as Error).message}`);
+        }
+    }
+}