refactor: clean up

packages/framework/src/scenes/GameHostScene.ts

@@ -0,0 +1,40 @@
+import Phaser from 'phaser';
+import { effect, type ReadonlySignal } from '@preact/signals-core';
+import type { GameHost } from 'boardgame-core';
+import { DisposableBag, type IDisposable } from '../utils';
+
+type CleanupFn = void | (() => void);
+
+export interface GameHostSceneOptions<TState extends Record<string, unknown>> {
+    gameHost: GameHost<TState>;
+}
+
+export abstract class GameHostScene<TState extends Record<string, unknown>>
+    extends Phaser.Scene
+    implements IDisposable
+{
+    protected disposables = new DisposableBag();
+    protected gameHost!: GameHost<TState>;
+
+    init(data: GameHostSceneOptions<TState>): void {
+        this.gameHost = data.gameHost;
+    }
+
+    create(): void {
+        this.events.on('shutdown', this.dispose, this);
+    }
+
+    dispose(): void {
+        this.disposables.dispose();
+    }
+
+    /** 获取当前状态的只读快照 */
+    protected get state(): TState {
+        return this.gameHost.state.value;
+    }
+
+    /** 注册响应式监听（场景关闭时自动清理） */
+    protected watch(fn: () => CleanupFn): void {
+        this.disposables.add(effect(fn));
+    }
+}

packages/framework/src/scenes/index.ts

@@ -0,0 +1,2 @@
+export { GameHostScene } from './GameHostScene';
+export type { GameHostSceneOptions } from './GameHostScene';