feat(任务主页): 增加标签页切换功能

在 home_active 方法中调用 switch_tab 以默认激活首页标签
重构 btn_func 方法，根据传入参数切换不同标签页
新增 switch_tab 方法，统一管理标签页与对应按钮的激活状态

assets/script/game/map/MissionHomeComp.ts

@@ -55,7 +55,7 @@ export class MissionHomeComp extends CCComp {
     home_active(){
         this.uodate_data()
         this.node.active=true
-        
+        this.switch_tab('home')
     }
     uodate_data(){
 
@@ -63,8 +63,24 @@ export class MissionHomeComp extends CCComp {
     isWxClient(){
         return typeof wx !== 'undefined' && typeof (wx as any).getSystemInfoSync === 'function';
     }
-    btn_func(e:string,data:any){
+    btn_func(e: any, data: string){
+        if (['home', 'hero', 'rank'].includes(data)) {
+            this.switch_tab(data);
+        }
+    }
 
+    switch_tab(tab: string) {
+        if (this.heros_page) this.heros_page.active = tab === 'hero';
+        if (this.rank_page) this.rank_page.active = tab === 'rank';
+
+        const setBtnActive = (btn: Node, isActive: boolean) => {
+            const activeNode = btn?.getChildByName('active');
+            if (activeNode) activeNode.active = isActive;
+        }
+
+        setBtnActive(this.home_btn, tab === 'home');
+        setBtnActive(this.hero_btn, tab === 'hero');
+        setBtnActive(this.rank_btn, tab === 'rank');
     }