fix：删除冗余代码+创建房间表单默认不选择

src/components/CreateRoom.vue

@@ -17,12 +17,19 @@ const props = defineProps({
   },
 });
 
-const battleMode = ref(1);
-const targetMode = ref(1);
+/** 对战模式：0=未选 1=1v1 2=乱斗 3=2v2 4=3v3 */
+const battleMode = ref(0);
+/** 靶纸尺寸：0=未选 1=20cm 2=40cm */
+const targetMode = ref(0);
 const loading = ref(false);
 const roomNumber = ref("");
 
 const createRoom = debounce(async () => {
+  // 校验必填项：对战模式与靶纸均必须选择
+  if (!battleMode.value || !targetMode.value) {
+    uni.showToast({ title: '请完善创建信息', icon: 'none' });
+    return;
+  }
   if (game.value.inBattle) {
     uni.$showHint(1);
     return;