refactor(fight): 优化战斗逻辑代码结构，清理冗余代码

logic/controller/fight.go

@@ -126,9 +126,7 @@ func (h Controller) OnReadyToFight(data *fight.ReadyToFightInboundInfo, c *playe
 
 // 接收战斗或者取消战斗的包
 func (h Controller) OnPlayerHandleFightInvite(data *fight.HandleFightInviteInboundInfo, c *player.Player) (result *fight.NullOutboundInfo, err errorcode.ErrorCode) {
-	if !c.CanFight() {
-		return nil, errorcode.ErrorCodes.ErrPokemonNotEligible
-	}
+
 	if ok, p1 := c.AgreeBattle(data.UserID, data.Flag, data.Mode); ok {
 		fight.NewFight(data.Mode, info.BattleStatus.FIGHT_WITH_PLAYER, c, p1) ///开始对战,房主方以及被邀请方
 	}

logic/controller/pet.go

@@ -70,23 +70,21 @@ func (h *Controller) PetRelease(
 	switch data.Flag {
 	case 0:
 
-		removeIndex := -1
-		for i, v := range c.Info.PetList {
-			if v.CatchTime == uint32(data.CatchTime) {
-				removeIndex = i
-				break // 只移除第一个匹配值，若需移除所有，可省略 break 继续循环
-			}
-
-		}
-		if removeIndex != -1 {
+		n, v, ok := utils.FindWithIndex(c.Info.PetList, func(item model.PetInfo) bool {
+			return item.CatchTime == data.CatchTime
+		})
+		if ok {
 			c.Service.PetInfo_One_exec(data.CatchTime, func(t *model.PetEX) {
-				t.Data = c.Info.PetList[removeIndex]
+				t.Data = *v
 				t.InBag = 0
 
 			})
-			c.Info.PetList = append(c.Info.PetList[:removeIndex], c.Info.PetList[removeIndex+1:]...)
+
+			c.Info.PetList = append(c.Info.PetList[:n], c.Info.PetList[n+1:]...)
+
 		}
 
+		// break // 只移除第一个匹配值，若需移除所有，可省略 break 继续循环
 	case 1:
 		//todo 背包
 		c.Service.PetInfo_One_exec(data.CatchTime, func(t *model.PetEX) {