86 - Change Crosshair Color

Source/Blaster/Character/BlasterAnimInstance.cpp

@@ -69,7 +69,8 @@ void UBlasterAnimInstance::NativeUpdateAnimation(float DeltaSeconds)
 		{
 			bLocallyControlled = true;
 			const FTransform RightHandTransform = EquippedWeapon->GetWeaponMesh()->GetSocketTransform(FName("Hand_R"), RTS_World);
-			RightHandRotation = UKismetMathLibrary::FindLookAtRotation(RightHandTransform.GetLocation(), RightHandTransform.GetLocation() + (RightHandTransform.GetLocation() - BlasterCharacter->GetHitTarget()));
+			FRotator LookAtRotation = UKismetMathLibrary::FindLookAtRotation(RightHandTransform.GetLocation(), RightHandTransform.GetLocation() + (RightHandTransform.GetLocation() - BlasterCharacter->GetHitTarget()));
+			RightHandRotation = FMath::RInterpTo(RightHandRotation, LookAtRotation, DeltaSeconds, 30.f);
 		}
 	}
 }

Source/Blaster/Character/BlasterCharacter.cpp

@@ -34,11 +34,12 @@ ABlasterCharacter::ABlasterCharacter()
 	OverheadWidget->SetupAttachment(RootComponent);
 
 	Combat = CreateDefaultSubobject<UCombatComponent>(TEXT("CombatComponent"));
-	Combat->SetIsReplicated(true);
+	Combat->SetIsReplicatedByDefault(true);
 
 	GetCharacterMovement()->NavAgentProps.bCanCrouch = true;
-	GetCapsuleComponent()->SetCollisionResponseToChannel(ECollisionChannel::ECC_Camera, ECollisionResponse::ECR_Ignore);
+	GetCapsuleComponent()->SetCollisionResponseToChannel(ECC_Camera, ECR_Ignore);
-	GetMesh()->SetCollisionResponseToChannel(ECollisionChannel::ECC_Camera, ECollisionResponse::ECR_Ignore);
+	GetMesh()->SetCollisionResponseToChannel(ECC_Camera, ECR_Ignore);
+	GetMesh()->SetCollisionResponseToChannel(ECC_Visibility, ECR_Block);
 	GetCharacterMovement()->RotationRate = FRotator(0.f, 850.f, 0.f);
 	TurningInPlace = ETurningInPlace::ETIP_NotTurning;
 	NetUpdateFrequency = 66.f;

Source/Blaster/Character/BlasterCharacter.h

@@ -3,12 +3,13 @@
 #pragma once
 
 #include "CoreMinimal.h"
+#include "Blaster/Interfaces/InteractWithCrosshairInterface.h"
 #include "Blaster/Types/TurningInPlace.h"
 #include "GameFramework/Character.h"
 #include "BlasterCharacter.generated.h"
 
 UCLASS()
-class BLASTER_API ABlasterCharacter : public ACharacter
+class BLASTER_API ABlasterCharacter : public ACharacter, public IInteractWithCrosshairInterface
 {
 	GENERATED_BODY()
 

Source/Blaster/Components/CombatComponent.cpp

@@ -4,7 +4,6 @@
 #include "CombatComponent.h"
 
 #include "Blaster/Character/BlasterCharacter.h"
-#include "Blaster/HUD/BlasterHUD.h"
 #include "Blaster/PlayerController/BlasterPlayerController.h"
 #include "Blaster/Weapon/Weapon.h"
 #include "Camera/CameraComponent.h"
@@ -48,7 +47,7 @@ void UCombatComponent::BeginPlay()
 void UCombatComponent::TickComponent(float DeltaTime, ELevelTick TickType, FActorComponentTickFunction* ThisTickFunction)
 {
 	Super::TickComponent(DeltaTime, TickType, ThisTickFunction);
-	
+
 	if (Character && Character->IsLocallyControlled())
 	{
 		FHitResult HitResult;
@@ -70,8 +69,6 @@ void UCombatComponent::SetHUDCrosshairs(float DeltaTime)
 		HUD = HUD == nullptr ? Cast<ABlasterHUD>(Controller->GetHUD()) : HUD;
 		if (HUD)
 		{
-			FHUDPackage HUDPackage;
-
 			if (EquippedWeapon)
 			{
 				HUDPackage.CrosshairsCenter = EquippedWeapon->CrosshairsCenter;
@@ -97,7 +94,7 @@ void UCombatComponent::SetHUDCrosshairs(float DeltaTime)
 			Velocity.Z = 0.f;
 
 			CrosshairVelocityFactor = FMath::GetMappedRangeValueClamped(WalkSpeedRange, VelocityMultiplierRange, Velocity.Size());
-			
+
 			if (Character->GetCharacterMovement()->IsFalling())
 			{
 				CrosshairInAirFactor = FMath::FInterpTo(CrosshairInAirFactor, 2.25f, DeltaTime, 2.25f);
@@ -117,14 +114,14 @@ void UCombatComponent::SetHUDCrosshairs(float DeltaTime)
 			}
 
 			CrosshairShootingFactor = FMath::FInterpTo(CrosshairShootingFactor, 0.f, DeltaTime, 40.f);
-			
+
 			HUDPackage.CrosshairSpread =
-					0.5f +
+				0.5f +
-					CrosshairVelocityFactor + 
+				CrosshairVelocityFactor +
-					CrosshairInAirFactor -
+				CrosshairInAirFactor -
-					CrosshairAimFactor +
+				CrosshairAimFactor +
-					CrosshairShootingFactor;
+				CrosshairShootingFactor;
-			
+
 			HUD->SetHUDPackage(HUDPackage);
 		}
 	}
@@ -222,8 +219,16 @@ void UCombatComponent::TraceUnderCrosshairs(FHitResult& TraceHitResult)
 			End,
 			ECollisionChannel::ECC_Visibility
 		);
+		if (TraceHitResult.GetActor() && TraceHitResult.GetActor()->Implements<UInteractWithCrosshairInterface>())
+		{
+			HUDPackage.CrosshairColor = FLinearColor::Red;
+		}
+		else
+		{
+			HUDPackage.CrosshairColor = FLinearColor::White;
+		}
 
-		if (!TraceHitResult.bBlockingHit) TraceHitResult.ImpactPoint = End; 
+		if (!TraceHitResult.bBlockingHit) TraceHitResult.ImpactPoint = End;
 	}
 }
 

Source/Blaster/Components/CombatComponent.h

@@ -3,6 +3,7 @@
 #pragma once
 
 #include "CoreMinimal.h"
+#include "Blaster/HUD/BlasterHUD.h"
 #include "Components/ActorComponent.h"
 #include "CombatComponent.generated.h"
 
@@ -68,7 +69,8 @@ private:
 	float CrosshairInAirFactor;
 	float CrosshairAimFactor;
 	float CrosshairShootingFactor;
-
+	FHUDPackage HUDPackage;
+	
 	// Aiming and FOV
 
 	// Field of view when not aiming; set to the camera's base FOV in BeginPlay

Source/Blaster/HUD/BlasterHUD.cpp

@@ -17,32 +17,32 @@ void ABlasterHUD::DrawHUD()
 		if (HUDPackage.CrosshairsCenter)
 		{
 			const FVector2D Spread(0.f, 0.f);
-			DrawCrosshair(HUDPackage.CrosshairsCenter, ViewportCenter, Spread);
+			DrawCrosshair(HUDPackage.CrosshairsCenter, ViewportCenter, Spread, HUDPackage.CrosshairColor);
 		}
 		if (HUDPackage.CrosshairsLeft)
 		{
 			const FVector2D Spread(-SpreadScaled, 0.f);
-			DrawCrosshair(HUDPackage.CrosshairsLeft, ViewportCenter, Spread);
+			DrawCrosshair(HUDPackage.CrosshairsLeft, ViewportCenter, Spread, HUDPackage.CrosshairColor);
 		}
 		if (HUDPackage.CrosshairsRight)
 		{
 			const FVector2D Spread(SpreadScaled, 0.f);
-			DrawCrosshair(HUDPackage.CrosshairsRight, ViewportCenter, Spread);
+			DrawCrosshair(HUDPackage.CrosshairsRight, ViewportCenter, Spread, HUDPackage.CrosshairColor);
 		}
 		if (HUDPackage.CrosshairsTop)
 		{
 			const FVector2D Spread(0.f, -SpreadScaled);
-			DrawCrosshair(HUDPackage.CrosshairsTop, ViewportCenter, Spread);
+			DrawCrosshair(HUDPackage.CrosshairsTop, ViewportCenter, Spread, HUDPackage.CrosshairColor);
 		}
 		if (HUDPackage.CrosshairsBottom)
 		{
 			const FVector2D Spread(0.f, SpreadScaled);
-			DrawCrosshair(HUDPackage.CrosshairsBottom, ViewportCenter, Spread);
+			DrawCrosshair(HUDPackage.CrosshairsBottom, ViewportCenter, Spread, HUDPackage.CrosshairColor);
 		}
 	}
 }
 
-void ABlasterHUD::DrawCrosshair(UTexture2D* Texture, FVector2D ViewportCenter, FVector2D Spread)
+void ABlasterHUD::DrawCrosshair(UTexture2D* Texture, FVector2D ViewportCenter, FVector2D Spread, FLinearColor CrosshairColor)
 {
 	const float TextureWidth = Texture->GetSizeX();
 	const float TextureHeight = Texture->GetSizeY();
@@ -61,6 +61,6 @@ void ABlasterHUD::DrawCrosshair(UTexture2D* Texture, FVector2D ViewportCenter, F
 		0.f,
 		1.f,
 		1.f,
-		FLinearColor::White
+		CrosshairColor
 	);
 }

Source/Blaster/HUD/BlasterHUD.h

@@ -18,6 +18,7 @@ public:
 	UTexture2D* CrosshairsTop;
 	UTexture2D* CrosshairsBottom;
 	float CrosshairSpread;
+	FLinearColor CrosshairColor;
 };
 
 /**
@@ -34,7 +35,7 @@ public:
 private:
 	FHUDPackage HUDPackage;
 
-	void DrawCrosshair(UTexture2D* Texture, FVector2D ViewportCenter, FVector2D Spread);
+	void DrawCrosshair(UTexture2D* Texture, FVector2D ViewportCenter, FVector2D Spread, FLinearColor CrosshairColor);
 
 	UPROPERTY(EditAnywhere)
 	float CrosshairSpreadMax = 16.f;

Source/Blaster/Interfaces/InteractWithCrosshairInterface.cpp

@@ -0,0 +1,6 @@
+// Fill out your copyright notice in the Description page of Project Settings.
+
+
+#include "InteractWithCrosshairInterface.h"
+
+// Add default functionality here for any IInteractWithCrosshairInterface functions that are not pure virtual.

Source/Blaster/Interfaces/InteractWithCrosshairInterface.h

@@ -0,0 +1,25 @@
+// Fill out your copyright notice in the Description page of Project Settings.
+
+#pragma once
+
+#include "CoreMinimal.h"
+#include "UObject/Interface.h"
+#include "InteractWithCrosshairInterface.generated.h"
+
+// This class does not need to be modified.
+UINTERFACE(MinimalAPI)
+class UInteractWithCrosshairInterface : public UInterface
+{
+	GENERATED_BODY()
+};
+
+/**
+ * 
+ */
+class BLASTER_API IInteractWithCrosshairInterface
+{
+	GENERATED_BODY()
+
+	// Add interface functions to this class. This is the class that will be inherited to implement this interface.
+public:
+};