feat: 实现战斗准备阶段英雄复活与入场动画

在准备阶段开始时，通过 PhasePrepareStart 事件触发英雄状态重置：
- 死亡英雄复活并恢复满血，播放下落入场动画
- 英雄实体在死亡时移至墓地并禁用碰撞，避免战斗逻辑干扰
- 更新英雄数量UI以反映复活后的状态

assets/script/game/map/MissionHeroComp.ts

@@ -25,7 +25,7 @@
  *   - FightSet —— 战斗常量（MERGE_NEED / MERGE_MAX）
  *   - oneCom —— 一次性特效组件（控制爆点特效生命周期）
  */
-import { _decorator, instantiate, Prefab, v3, Vec3 } from "cc";
+import { _decorator, instantiate, Prefab, v3, Vec3, BoxCollider2D } from "cc";
 import { ecs } from "../../../../extensions/oops-plugin-framework/assets/libs/ecs/ECS";
 import { CCComp } from "../../../../extensions/oops-plugin-framework/assets/module/common/CCComp";
 import { Hero } from "../hero/Hero";
@@ -35,8 +35,9 @@ import { GameEvent } from "../common/config/GameEvent";
 import { HeroInfo, HeroPos, HType } from "../common/config/heroSet";
 import { oops } from "../../../../extensions/oops-plugin-framework/assets/core/Oops";
 import { HeroAttrsComp } from "../hero/HeroAttrsComp";
-import { FacSet, FightSet } from "../common/config/GameSet";
+import { FacSet, FightSet, BoxSet } from "../common/config/GameSet";
 import { oneCom } from "../skill/oncend";
+import { HeroViewComp } from "../hero/HeroViewComp";
 const { ccclass } = _decorator;
 
 /**
@@ -89,11 +90,13 @@ export class MissionHeroCompComp extends CCComp {
         this.on(GameEvent.MissionEnd,this.clear_heros,this)
         // 注册全局消息
         oops.message.on(GameEvent.CallHero,this.call_hero,this)
+        oops.message.on("PhasePrepareStart",this.fight_ready,this)
     }
 
     onDestroy(){
         // 清理全部监听
         oops.message.off(GameEvent.CallHero,this.call_hero,this)
+        oops.message.off("PhasePrepareStart",this.fight_ready,this)
         oops.message.off(GameEvent.FightReady,this.fight_ready,this)
         oops.message.off(GameEvent.Zhaohuan,this.zhao_huan,this)
         oops.message.off(GameEvent.MissionEnd,this.clear_heros,this)
@@ -104,17 +107,36 @@ export class MissionHeroCompComp extends CCComp {
 
     // ======================== 事件处理 ========================
 
-    /** 关卡结束时清理全部存活英雄 ECS 实体 */
+    /** 关卡结束时清理全部英雄 ECS 实体 */
     clear_heros(){
-        const heroes = this.getAliveHeroes();
+        const heroes = this.getAllHeroes();
         for (let i = 0; i < heroes.length; i++) {
             heroes[i].destroy();
         }
     }
 
-    /** 战斗准备阶段：重置出战英雄计数 */
+    /** 战斗准备阶段：重置出战英雄计数，恢复满血重新登场 */
     fight_ready(){
-        smc.vmdata.mission_data.hero_num=0
+        const heroes = this.getAllHeroes();
+        smc.vmdata.mission_data.hero_num = heroes.length;
+        for (let i = 0; i < heroes.length; i++) {
+            const hero = heroes[i];
+            const model = hero.get(HeroAttrsComp);
+            const view = hero.get(HeroViewComp);
+            if (model && view) {
+                if (model.is_dead) {
+                    view.alive();
+                    const landingPos = this.resolveHeroLandingPos(model.hero_uuid);
+                    // 不再直接设置位置，而是播放下落入场动画
+                    // 计算出出生点（空中）
+                    const spawnPos: Vec3 = v3(landingPos.x, landingPos.y + MissionHeroCompComp.HERO_DROP_HEIGHT, 0);
+                    view.node.setPosition(spawnPos);
+                    hero.playDropAnim(spawnPos, landingPos.y);
+                }
+                model.hp = model.hp_max;
+                model.dirty_hp = true;
+            }
+        }
     }
 
     /** 预留：召唤事件扩展入口 */
@@ -219,14 +241,13 @@ export class MissionHeroCompComp extends CCComp {
 
     // ======================== 英雄查询 ========================
 
-    /** 获取当前全部存活友方英雄 ECS 实体列表 */
-    private getAliveHeroes(): Hero[] {
+    /** 获取当前全部友方英雄 ECS 实体列表（包括存活和墓地） */
+    private getAllHeroes(): Hero[] {
         const heroes: Hero[] = [];
         ecs.query(ecs.allOf(HeroAttrsComp)).forEach((entity: ecs.Entity) => {
             const model = entity.get(HeroAttrsComp);
             if (!model) return;
             if (model.fac !== FacSet.HERO) return;
-            if (model.is_dead) return;
             heroes.push(entity as Hero);
         });
         return heroes;
@@ -321,7 +342,7 @@ export class MissionHeroCompComp extends CCComp {
         this.addHero(uuid, hero_lv, pool_lv);
         if (!this.canMergeLevel(hero_lv)) return;
         const needCount = this.getMergeNeedCount();
-        const aliveHeroes = this.getAliveHeroes();
+        const aliveHeroes = this.getAllHeroes();
         const mergeHeroes = this.pickMergeHeroes(aliveHeroes, uuid, hero_lv, needCount);
         if (mergeHeroes.length !== needCount) return;
         this.is_merging = true;
@@ -442,7 +463,7 @@ export class MissionHeroCompComp extends CCComp {
             if (!this.canMergeLevel(checkLv)) {
                 break;
             }
-            const aliveHeroes = this.getAliveHeroes();
+            const aliveHeroes = this.getAllHeroes();
             const sameCount = this.countMergeHeroes(aliveHeroes, uuid, checkLv);
             if (sameCount < needCount) {
                 break;