healing projectile

Source/TurnBasedTutorial/BattleMode/Trooper/Projectile.cpp

@@ -42,8 +42,8 @@ AProjectile::AProjectile() {
 }
 
 void AProjectile::Initialize(const UAbility *Ability,
-                               uint8 playerIndex,
-                               float PathLength) {
+                             uint8 playerIndex,
+                             float PathLength) {
     ProjectileMovementComponent->InitialSpeed =
         ProjectileMovementComponent->MaxSpeed = Ability->Speed;
     Damage = Ability->Damage;
@@ -69,9 +69,16 @@ void AProjectile::NotifyActorBeginOverlap(AActor *OtherActor) {
                ),
                OtherTrooper->GetId(), OtherTrooper->GetPlayerIndex(), Damage,
                PlayerIndex);
-        if (PlayerIndex != -1 && PlayerIndex != OtherTrooper->
-            GetPlayerIndex()) {
-            OtherTrooper->TrooperTakeDamage(Damage);
+        if (Damage > 0) {
+            if (PlayerIndex != -1 && PlayerIndex != OtherTrooper->
+                GetPlayerIndex()) {
+                OtherTrooper->TrooperTakeDamage(Damage);
+            }
+        } else {
+            if (PlayerIndex != -1 && PlayerIndex == OtherTrooper->
+                GetPlayerIndex()) {
+                OtherTrooper->TrooperTakeDamage(Damage);
+            }
         }
     } else {
         UE_LOG(LogTemp, Warning, TEXT("Overlapped not a trooper"));

Source/TurnBasedTutorial/BattleMode/Trooper/Trooper.cpp

@@ -308,15 +308,20 @@ void ATrooper::TrooperTakeDamage_Implementation(float Damage) {
     if (bIsTakingDamage || bIsDead) {
         return;
     }
-    HitPoints = FMath::Max<float>(0, HitPoints - Damage);
-    if (HitPoints == 0) {
-        bIsDead = true;
-        SetLifeSpan(DyingAnimationDuration);
-        GetWorld()->GetGameState<ABattleGameState>()->DecreaseLivingTroopers(
-            PlayerIndex);
+    if (Damage > 0) {
+        HitPoints = FMath::Max<float>(0, HitPoints - Damage);
+        if (HitPoints == 0) {
+            bIsDead = true;
+            SetLifeSpan(DyingAnimationDuration);
+            GetWorld()->GetGameState<ABattleGameState>()->
+                        DecreaseLivingTroopers(
+                            PlayerIndex);
+        } else {
+            // bIsTakingDamage = true;
+            SetIsTakingDamage(true);
+        }
     } else {
-        // bIsTakingDamage = true;
-        SetIsTakingDamage(true);
+        HitPoints = FMath::Min<float>(StartHitPoints, HitPoints - Damage);
     }
 }