fix: update button to choose cat

packages/boop-game/src/scenes/PieceTypeSelector.ts

@@ -44,6 +44,8 @@ export class PieceTypeSelector {
     bg.setInteractive({ useHandCursor: true });
     bg.on('pointerdown', () => {
       this.selectedType = type;
+      // 立即更新按钮高亮状态
+      this.updateButtonsVisual();
       this.typeChangeCallback?.(this.selectedType);
     });
 
@@ -54,6 +56,21 @@ export class PieceTypeSelector {
     this.typeChangeCallback = callback;
   }
 
+  /**
+   * 立即更新按钮的视觉高亮状态（不依赖游戏状态变化）
+   */
+  private updateButtonsVisual(): void {
+    const kittenBg = this.kittenButton.list[0] as Phaser.GameObjects.Rectangle;
+    const kittenText = this.kittenButton.list[1] as Phaser.GameObjects.Text;
+    const catBg = this.catButton.list[0] as Phaser.GameObjects.Rectangle;
+    const catText = this.catButton.list[1] as Phaser.GameObjects.Text;
+
+    // 更新小猫按钮
+    kittenBg.setFillStyle(this.selectedType === 'kitten' ? 0xfbbf24 : 0xe5e7eb);
+    // 更新大猫按钮
+    catBg.setFillStyle(this.selectedType === 'cat' ? 0xfbbf24 : 0xe5e7eb);
+  }
+
   getSelectedType(): PieceType {
     return this.selectedType;
   }