145 - Weapon Outline Effect

Source/Blaster/Weapon/Weapon.cpp

@@ -26,6 +26,10 @@ AWeapon::AWeapon()
 	WeaponMesh->SetCollisionResponseToChannel(ECollisionChannel::ECC_Pawn, ECollisionResponse::ECR_Ignore);
 	WeaponMesh->SetCollisionEnabled(ECollisionEnabled::NoCollision);
 	
+	WeaponMesh->SetCustomDepthStencilValue(CUSTOM_DEPTH_BLUE);
+	WeaponMesh->MarkRenderStateDirty();
+	EnableCustomDepth(true);
+
 	AreaSphere = CreateDefaultSubobject<USphereComponent>(TEXT("AreaSphere"));
 	AreaSphere->SetupAttachment(RootComponent);
 	AreaSphere->SetCollisionResponseToAllChannels(ECollisionResponse::ECR_Ignore);
@@ -43,6 +47,14 @@ void AWeapon::GetLifetimeReplicatedProps(TArray<FLifetimeProperty>& OutLifetimeP
 	DOREPLIFETIME(AWeapon, Ammo);
 }
 
+void AWeapon::EnableCustomDepth(bool bEnabled)
+{
+	if (WeaponMesh)
+	{
+		WeaponMesh->SetRenderCustomDepth(bEnabled);
+	}
+}
+
 void AWeapon::BeginPlay()
 {
 	Super::BeginPlay();
@@ -145,6 +157,7 @@ void AWeapon::SetWeaponState(EWeaponState State)
 			WeaponMesh->SetEnableGravity(true);
 			WeaponMesh->SetCollisionResponseToAllChannels(ECollisionResponse::ECR_Ignore);
 		}
+		EnableCustomDepth(false);
 		break;
 	case EWeaponState::EWS_Dropped:
 		if (HasAuthority())
@@ -157,6 +170,9 @@ void AWeapon::SetWeaponState(EWeaponState State)
 		WeaponMesh->SetCollisionResponseToAllChannels(ECollisionResponse::ECR_Block);
 		WeaponMesh->SetCollisionResponseToChannel(ECollisionChannel::ECC_Pawn, ECollisionResponse::ECR_Ignore);
 		WeaponMesh->SetCollisionResponseToChannel(ECollisionChannel::ECC_Camera, ECollisionResponse::ECR_Ignore);
+		WeaponMesh->SetCustomDepthStencilValue(CUSTOM_DEPTH_BLUE);
+		WeaponMesh->MarkRenderStateDirty();
+		EnableCustomDepth(true);
 		break;
 	}
 }
@@ -186,6 +202,7 @@ void AWeapon::OnRep_WeaponState()
 			WeaponMesh->SetEnableGravity(true);
 			WeaponMesh->SetCollisionResponseToAllChannels(ECollisionResponse::ECR_Ignore);
 		}
+		EnableCustomDepth(false);
 		break;
 	case EWeaponState::EWS_Dropped:
 		WeaponMesh->SetSimulatePhysics(true);
@@ -194,6 +211,9 @@ void AWeapon::OnRep_WeaponState()
 		WeaponMesh->SetCollisionResponseToAllChannels(ECollisionResponse::ECR_Block);
 		WeaponMesh->SetCollisionResponseToChannel(ECollisionChannel::ECC_Pawn, ECollisionResponse::ECR_Ignore);
 		WeaponMesh->SetCollisionResponseToChannel(ECollisionChannel::ECC_Camera, ECollisionResponse::ECR_Ignore);
+		WeaponMesh->SetCustomDepthStencilValue(CUSTOM_DEPTH_BLUE);
+		WeaponMesh->MarkRenderStateDirty();
+		EnableCustomDepth(true);
 		break;
 	}
 }

Source/Blaster/Weapon/Weapon.h

@@ -67,6 +67,9 @@ public:
 	UPROPERTY(EditAnywhere, Category = Combat)
 	float FireDelay = .15f;
 
+	// Enable or disable custom depth
+	void EnableCustomDepth(bool bEnabled);
+	
 protected:
 	virtual void BeginPlay() override;
 

Source/Blaster/Weapon/WeaponTypes.h

@@ -2,6 +2,10 @@
 
 #define TRACE_LENGTH  80000
 
+#define CUSTOM_DEPTH_PURPLE 250
+#define CUSTOM_DEPTH_BLUE 251
+#define CUSTOM_DEPTH_TAN 252
+
 UENUM(BlueprintType)
 enum class EWeaponType: uint8
 {