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assets/scripts/utils/ScreenAdapter.ts

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+// ScreenAdapter.ts
+import { _decorator, Component, view, ResolutionPolicy } from 'cc';
+const { ccclass, property } = _decorator;
+
+@ccclass('ScreenAdapter')
+export class ScreenAdapter extends Component {
+    @property
+    designWidth: number = 1080;   // 默认设计宽度
+
+    @property
+    designHeight: number = 1920;  // 默认设计高度
+
+    onLoad() {
+        this.applyAdapter();
+    }
+
+    /**
+     * 应用屏幕适配
+     */
+    applyAdapter() {
+        // const frameSize = view.getFrameSize();
+        // const aspect = frameSize.width / frameSize.height;
+        // const designAspect = this.designWidth / this.designHeight;
+
+        // if (aspect > designAspect) {
+        //     // 屏幕更宽 → 固定高度，保证上下完整
+        //     view.setDesignResolutionSize(this.designWidth, this.designHeight, ResolutionPolicy.FIXED_HEIGHT);
+        //     console.log('[ScreenAdapter] Use FIXED_HEIGHT, aspect =', aspect.toFixed(2));
+        // } else {
+        //     // 屏幕更窄 → 固定宽度，保证左右完整
+        //     view.setDesignResolutionSize(this.designWidth, this.designHeight, ResolutionPolicy.FIXED_WIDTH);
+        //     console.log('[ScreenAdapter] Use FIXED_WIDTH, aspect =', aspect.toFixed(2));
+        // }
+    }
+}