细节完善

src/pages/battle-room.vue

@@ -373,13 +373,20 @@ onBeforeUnmount(() => {
         :removePlayer="removePlayer"
       />
       <view>
-        <SButton :disabled="ready" :onClick="getReady">{{
+        <SButton
+          :disabled="
+            ready || (owner.id === user.id && (room.members || []).length < 3)
+          "
+          :onClick="getReady"
+        >
+          {{
             allReady.value
               ? "即将进入对局..."
-            : owner.id === user.id && (room.members || []).length > 2
+              : owner.id === user.id
               ? "开始对局"
               : "我准备好了"
-        }}</SButton>
+          }}
+        </SButton>
         <text class="tips">所有人准备后自动开始游戏。</text>
       </view>
     </view>