fix(游戏地图): 修复任务卡片锁定状态同步问题

添加isLocked私有变量统一管理锁定状态，确保Lock节点的显示与状态同步
修复初始化时Lock节点显示逻辑，避免初始显示异常
在广告播放成功和关闭时正确更新锁定状态

assets/script/game/map/MissionCardComp.ts

@@ -43,6 +43,9 @@ export class MissionCardComp extends CCComp {
     // 已购买的卡片槽位标记 (用于物品购买)
     purchasedSlots: boolean[] = [false, false, false, false, false];
 
+    // 是否处于锁定状态
+    private isLocked: boolean = true;
+
     onLoad() {
         if (this.btnClose) {
             this.btnClose.on(Node.EventType.TOUCH_END, this.onGiveUp, this);
@@ -77,7 +80,8 @@ export class MissionCardComp extends CCComp {
     
     /** 游戏开始初始化 */
     onMissionStart() {
-        this.Lock.active = true;
+        this.isLocked = true;
+        if (this.Lock) this.Lock.active = false; // 初始不显示，等待 showCardType
         this.eventQueue = [];
     }
 
@@ -165,6 +169,11 @@ export class MissionCardComp extends CCComp {
             this.btnClose.active = (type === CardType.Potion);
         }
 
+        // 根据锁定状态显示 Lock 节点
+        if (this.Lock) {
+            this.Lock.active = this.isLocked;
+        }
+
         this.resetCardStates();
         this.refCards();
         this.playShowAnimation();
@@ -365,6 +374,7 @@ export class MissionCardComp extends CCComp {
         console.log("播放激励视频广告...");
 
         // 模拟广告播放成功回调
+        this.isLocked = false;
         if (this.Lock) {
             this.Lock.active = false;
             oops.gui.toast("解锁成功");
@@ -407,6 +417,11 @@ export class MissionCardComp extends CCComp {
             this.btnClose.active = false;
         }
 
+        // 关闭时隐藏 Lock 节点
+        if (this.Lock) {
+            this.Lock.active = false;
+        }
+
         this.checkQueue();
     }