修复首页模型加载超时切换室外地图

src/pages/index/index.vue

@@ -449,6 +449,7 @@ let launchOverlayFallbackTimer: ReturnType<typeof setTimeout> | null = null
 let launchOverlayFadeTimer: ReturnType<typeof setTimeout> | null = null
 let launchOverlayHideDelayTimer: ReturnType<typeof setTimeout> | null = null
 let launchOverlayStartedAt = 0
+let launchOverlayRunId = 0
 
 const clearLaunchTimers = () => {
   if (launchOverlayFallbackTimer) {
@@ -470,11 +471,13 @@ const clearLaunchTimers = () => {
 const completeHideLaunchOverlay = () => {
   if (!launchOverlayVisible.value) return
 
+  const runId = launchOverlayRunId
   launchProgress.value = 100
   launchOverlayLeaving.value = true
   clearLaunchTimers()
 
   launchOverlayFadeTimer = setTimeout(() => {
+    if (runId !== launchOverlayRunId) return
     launchOverlayVisible.value = false
     launchOverlayLeaving.value = false
     launchOverlayFadeTimer = null
@@ -489,7 +492,9 @@ const hideLaunchOverlay = () => {
 
   if (waitMs > 0) {
     if (launchOverlayHideDelayTimer) clearTimeout(launchOverlayHideDelayTimer)
+    const runId = launchOverlayRunId
     launchOverlayHideDelayTimer = setTimeout(() => {
+      if (runId !== launchOverlayRunId) return
       launchOverlayHideDelayTimer = null
       completeHideLaunchOverlay()
     }, waitMs)
@@ -504,21 +509,18 @@ const shouldWaitForLaunchModel = () => (
   && is3DMode.value
 )
 
-const continueLaunchWithoutInitialModel = (reason: string, event?: { view: GuideIndoorView; floorId?: string; message?: string; elapsedMs?: number }) => {
+// The launch overlay is independent from the selected map business mode. Releasing it
+// must leave ThreeMap mounted so its loading/error/retry lifecycle can continue.
+const releaseLaunchOverlayWithoutInitialModel = (reason: string, event?: { view: GuideIndoorView; floorId?: string; message?: string; elapsedMs?: number }) => {
   if (!launchOverlayVisible.value || launchOverlayLeaving.value) return
 
-  console.warn('首页前置加载页未等待初始三维模型，已进入馆外导览:', {
+  console.warn('首页前置加载页未等待初始三维模型，已关闭启动遮罩:', {
     reason,
     event
   })
 
   launchInitialModelSettled.value = true
   launchProgress.value = Math.max(launchProgress.value, 96)
-  is3DMode.value = false
-  guideOutdoorState.value = 'home'
-  selectedGuidePoi.value = null
-  isPoiCardCollapsed.value = false
-  isSimulatingRoute.value = false
   hideLaunchOverlay()
 }
 
@@ -526,6 +528,7 @@ const startLaunchOverlay = () => {
   if (!launchOverlayVisible.value) return
 
   clearLaunchTimers()
+  const runId = ++launchOverlayRunId
   launchInitialModelSettled.value = false
   launchOverlayStartedAt = Date.now()
   launchProgress.value = shouldWaitForLaunchModel() ? 8 : 68
@@ -535,8 +538,9 @@ const startLaunchOverlay = () => {
     : launchOverlayNonGuideTimeoutMs
 
   launchOverlayFallbackTimer = setTimeout(() => {
+    if (runId !== launchOverlayRunId) return
     if (shouldWaitForLaunchModel() && !launchInitialModelSettled.value) {
-      continueLaunchWithoutInitialModel('timeout')
+      releaseLaunchOverlayWithoutInitialModel('timeout')
       return
     }
     hideLaunchOverlay()
@@ -553,7 +557,7 @@ const settleLaunchOverlayByModel = (status: 'ready' | 'failed', event?: { view:
   launchInitialModelSettled.value = true
 
   if (status === 'failed') {
-    continueLaunchWithoutInitialModel('failed', event)
+    releaseLaunchOverlayWithoutInitialModel('failed', event)
     return
   } else {
     launchProgress.value = 100
@@ -885,6 +889,7 @@ onMounted(() => {
 })
 
 onUnmounted(() => {
+  launchOverlayRunId += 1
   clearLaunchTimers()
 
   if (indoorGestureHintTimer) {