update

src/views/Student/index.vue

@@ -2449,6 +2449,33 @@ const checkIsCreator = () => {
  * 初始化消息监听
  */
 const messageInit = () => {
+  // 如果是创建者，清空所有同步状态
+  if (isCreator.value && docSocket.value) {
+    console.log('🧹 创建者进入，清空所有同步状态')
+    docSocket.value.transact(() => {
+      // 清空消息
+      const messageArray = docSocket.value?.getArray?.('message')
+      if (messageArray) {
+        messageArray.delete(0, messageArray.length)
+      }
+      // 清空计时器状态
+      const timerStateMap = docSocket.value?.getMap?.('timerState')
+      if (timerStateMap) {
+        timerStateMap.clear()
+      }
+      // 清空激光笔状态
+      const laserStateMap = docSocket.value?.getMap?.('laserState')
+      if (laserStateMap) {
+        laserStateMap.clear()
+      }
+      // 清空画图状态
+      const writingBoardStateMap = docSocket.value?.getMap?.('writingBoardState')
+      if (writingBoardStateMap) {
+        writingBoardStateMap.clear()
+      }
+    })
+  }
+
   if (docSocket.value && !yMessage.value) {
     console.log('获取message', docSocket.value, yMessage.value)
     yMessage.value = docSocket.value.getArray('message')