refactor: inline event registration at setup level, remove registerEvents duplication across entry points

src/composables/useGameEngine.ts

@@ -15,18 +15,6 @@ export function useGameEngine(videoEls: () => [HTMLVideoElement | null, HTMLVide
     ;(window as any).__store = store
   }
 
-  async function loadGame(dataUrl: string) {
-    const resp = await fetch(dataUrl)
-    const data: GameData = await resp.json()
-    engine.sceneManager.load(data)
-    engine.stateManager.init(data.variables)
-    store.setChapters(data.chapters || [])
-
-    const unlocked = await saveSystem.getUnlockedChapters()
-    store.setUnlockedChapters(unlocked)
-  }
-
-  function registerEvents() {
   engine.setChapterUnlockHandler(async (chapterId) => {
     await saveSystem.unlockChapter(chapterId)
     store.addUnlockedChapter(chapterId)
@@ -75,7 +63,9 @@ export function useGameEngine(videoEls: () => [HTMLVideoElement | null, HTMLVide
           lastThumbnail = canvas.toDataURL('image/jpeg', 0.6)
         }
       }
-      } catch { /* ignore */ }
+    } catch {
+      /* ignore */
+    }
   })
 
   engine.on('gameEnd', () => {
@@ -98,22 +88,39 @@ export function useGameEngine(videoEls: () => [HTMLVideoElement | null, HTMLVide
   engine.videoManager.onTimeUpdate((t: number) => {
     store.setVideoTime(t)
   })
+
+  async function loadGame(dataUrl: string) {
+    const resp = await fetch(dataUrl)
+    const data: GameData = await resp.json()
+    engine.sceneManager.load(data)
+    engine.stateManager.init(data.variables)
+    store.setChapters(data.chapters || [])
+    const unlocked = await saveSystem.getUnlockedChapters()
+    store.setUnlockedChapters(unlocked)
+  }
+
+  function ensureVideo() {
+    const [elA, elB] = videoEls()
+    if (elA && elB) engine.videoManager.attach(elA, elB)
   }
 
   function start() {
-    const [elA, elB] = videoEls()
+    ensureVideo()
-    if (elA && elB) engine.videoManager.attach(elA, elB)
-    registerEvents()
     engine.start()
   }
 
   async function resumeAutoSave(): Promise<boolean> {
-    const [elA, elB] = videoEls()
+    ensureVideo()
-    if (elA && elB) engine.videoManager.attach(elA, elB)
+    store.setGameEnded(false)
-    registerEvents()
     return await loadGameFromSlot(0)
   }
 
+  function startChapter(chapterId: string) {
+    ensureVideo()
+    store.setGameEnded(false)
+    engine.startChapter(chapterId)
+  }
+
   function makeChoice(index: number) {
     const scene = store.currentScene
     if (!scene?.choices) return
@@ -131,17 +138,9 @@ export function useGameEngine(videoEls: () => [HTMLVideoElement | null, HTMLVide
     }
   }
 
-  function startChapter(chapterId: string) {
-    const [elA, elB] = videoEls()
-    if (elA && elB) engine.videoManager.attach(elA, elB)
-    store.setGameEnded(false)
-    engine.startChapter(chapterId)
-  }
-
   async function saveGame(slot: number) {
     const state = engine.stateManager
     const currentScene = store.currentScene
-
     await saveSystem.save(slot, {
       timestamp: Date.now(),
       currentScene: currentScene?.id ?? '',
@@ -156,7 +155,6 @@ export function useGameEngine(videoEls: () => [HTMLVideoElement | null, HTMLVide
   async function loadGameFromSlot(slot: number): Promise<boolean> {
     const data = await saveSystem.load(slot)
     if (!data) return false
-
     store.setGameEnded(false)
     engine.resumeScene(data.currentScene, {
       variables: data.variables,
@@ -179,6 +177,17 @@ export function useGameEngine(videoEls: () => [HTMLVideoElement | null, HTMLVide
     destroy()
   })
 
-  return { loadGame, start, resumeAutoSave, makeChoice, clickHotspot, startChapter,
+  return {
-    saveGame, loadGameFromSlot, refreshSaves, engine, saveSystem }
+    loadGame,
+    start,
+    resumeAutoSave,
+    makeChoice,
+    clickHotspot,
+    startChapter,
+    saveGame,
+    loadGameFromSlot,
+    refreshSaves,
+    engine,
+    saveSystem,
+  }
 }