chore: update fight logic and effect implementations

logic/service/fight/input.go

@@ -151,25 +151,6 @@ func (f *FightC) bindInputFightContext(inputGroups ...[]*input.Input) {
 	}
 }
 
-// linkOppInputs 仅建立“默认对手回退”关系，不参与真实目标选择。
-// 真实目标应由 action.targetIndex 决定；这里仅为旧 effect/无动作上下文链路提供默认 Opp。
-func (f *FightC) linkOppInputs() {
-	defaultOpp := f.selectInput(f.Opp, 0)
-	for _, fighter := range f.Our {
-		if fighter == nil {
-			continue
-		}
-		fighter.SetOPP(defaultOpp)
-	}
-	defaultOur := f.selectInput(f.Our, 0)
-	for _, fighter := range f.Opp {
-		if fighter == nil {
-			continue
-		}
-		fighter.SetOPP(defaultOur)
-	}
-}
-
 // linkTeamViews 建立每个输入的同阵营/对阵营视图（Team/OppTeam）。
 func (f *FightC) linkTeamViews() {
 	for _, fighter := range f.Our {
@@ -263,7 +244,8 @@ func (f *FightC) setActionAttackValue(act action.BattleActionI) {
 		return
 	}
 	attacker.AttackValue.ActorIndex = uint32(act.GetActorIndex())
-	attacker.AttackValue.TargetIndex = uint32(act.GetTargetIndex())
+	targetIndex, _ := DecodeTargetIndex(act.GetTargetIndex())
+	attacker.AttackValue.TargetIndex = uint32(targetIndex)
 }
 
 func (f *FightC) Ownerid() uint32 {
@@ -311,10 +293,11 @@ func (f *FightC) GetInputByAction(c action.BattleActionI, isOpposite bool) *inpu
 		return f.primaryOur()
 	}
 	index := c.GetActorIndex()
-	if isOpposite {
-		index = c.GetTargetIndex()
+	if !isOpposite {
+		return f.getInputByUserID(c.GetPlayerID(), index, false)
 	}
-	return f.getInputByUserID(c.GetPlayerID(), index, isOpposite)
+	targetIndex, targetIsOpposite := DecodeTargetIndex(c.GetTargetIndex())
+	return f.getInputByUserID(c.GetPlayerID(), targetIndex, targetIsOpposite)
 }
 
 // 玩家使用技能