diff --git a/client/src/components/TopBar.vue b/client/src/components/TopBar.vue
index 6ded3bc..54434ae 100644
--- a/client/src/components/TopBar.vue
+++ b/client/src/components/TopBar.vue
@@ -1,5 +1,5 @@
 <template>
-  <div class="topbar__container">
+  <div v-if="userInfo" class="topbar__container">
     <div class="topbar__username">
       {{ userInfo.name }}
     </div>
@@ -25,7 +25,6 @@ const actionLogout = async () => {
   await useAuth().logout()
   useRouter().push('/')
 }
-
 </script>
 
 <style lang="scss">
diff --git a/client/src/composables/useAuth.ts b/client/src/composables/useAuth.ts
index 35868f2..28a62c0 100644
--- a/client/src/composables/useAuth.ts
+++ b/client/src/composables/useAuth.ts
@@ -4,21 +4,14 @@ import { $fetch } from 'ohmyfetch'
 export interface useAuth {
   login(authCode: string): Promise<void>
   logout(): Promise<void>
-  isAuthenticated(): Promise<boolean>
-  loadUserInfo(): Promise<void>
+  authenticateAndLoadUserInfo(): Promise<void>
 }
 
 export default (): useAuth => {
   const userInfoStore = useUserinfoStore()
 
   return {
-    isAuthenticated: async (): Promise<boolean> => {
-      return $fetch('/api/userinfo')
-        .then(() => true)
-        .catch(() => false)
-    },
-
-    loadUserInfo: async (): Promise<void> => {
+    authenticateAndLoadUserInfo: async (): Promise<void> => {
       const userInfo = await $fetch('/api/userinfo')
       userInfoStore.setUserInfo(userInfo)
     },
diff --git a/client/src/composables/useEngine.ts b/client/src/composables/useEngine.ts
new file mode 100644
index 0000000..2cc3b38
--- /dev/null
+++ b/client/src/composables/useEngine.ts
@@ -0,0 +1,16 @@
+export interface useEngine {
+    start(): void
+    stop(): void
+}
+
+export default (): useEngine => {
+    return {
+        start: (): void => {
+            console.log('start engine')
+        },
+
+        stop: (): void => {
+            console.log('stop engine')
+        },
+    }
+}
\ No newline at end of file
diff --git a/client/src/pages/index.vue b/client/src/pages/index.vue
index 752b237..760d1e6 100644
--- a/client/src/pages/index.vue
+++ b/client/src/pages/index.vue
@@ -24,8 +24,12 @@ import useAuth from '@/composables/useAuth'
 
 const config = useRuntimeConfig()
 
-if (await useAuth().isAuthenticated()) {
+try {
+
+  await useAuth().authenticateAndLoadUserInfo()
   useRouter().push('/play')
+} catch (e) {
+  // nop
 }
 </script>
 
diff --git a/client/src/pages/play.vue b/client/src/pages/play.vue
index 07dbc06..c4f8f06 100644
--- a/client/src/pages/play.vue
+++ b/client/src/pages/play.vue
@@ -1,6 +1,6 @@
 <template>
   <div class="page-play__container">
-    <TopBar />
+    <TopBar T/>
     wohoo!
   </div>
 </template>
@@ -8,15 +8,20 @@
 <script setup lang="ts">
 import { useRouter } from '#app'
 import useAuth from '@/composables/useAuth';
+import useEngine from '@/composables/useEngine';
+import { onMounted, onBeforeUnmount } from 'vue';
 
-const { isAuthenticated, loadUserInfo } = useAuth()
+const { authenticateAndLoadUserInfo } = useAuth()
 const router = useRouter()
-if (!await isAuthenticated()) {
+try {
+  await authenticateAndLoadUserInfo()
+} catch(e) {
   router.push('/')
 }
 
-await loadUserInfo()
-
+const { start: startEngine, stop: stopEngine } = useEngine()
+onMounted(() => startEngine())
+onBeforeUnmount(() => stopEngine())
 </script>
 
 <style lang="scss">