feat: add interaction interface, component and test item

Added Interactable - interface for interaction system. Implemented in test item (TestBox).
Created interaction component for character
Added interaction input - not implemented.

Source/Exo/Private/Player/InteractionComponent.cpp

@@ -0,0 +1,47 @@
+#include "Player/InteractionComponent.h"
+
+UInteractionComponent::UInteractionComponent()
+{
+	PrimaryComponentTick.bCanEverTick = true;
+}
+
+
+void UInteractionComponent::BeginPlay()
+{
+	Super::BeginPlay();
+}
+
+
+void UInteractionComponent::CheckForInteractable()
+{
+    AActor* Owner = GetOwner();
+
+    FVector LineStart = Owner->GetActorLocation();
+    FVector ForwardVector = Owner->GetActorForwardVector();
+    FVector LineEnd = LineStart + (ForwardVector * InteractionDistance);
+
+    FHitResult HitResult;
+    FCollisionQueryParams QueryParams;
+    QueryParams.AddIgnoredActor(Owner);
+
+    bool bHit = GetWorld()->LineTraceSingleByChannel(HitResult, LineStart, LineEnd, ECC_Visibility, QueryParams);
+
+    if (bHit && HitResult.GetActor())
+    {
+        if (HitResult.GetActor()->Implements<UInteractable>())
+        {
+            IInteractable::Execute_Interact(HitResult.GetActor());
+        }
+    }
+
+    if (bShowDebugLine)
+        DrawDebugLine(GetWorld(), LineStart, LineEnd, FColor::Red, false, 1.0f, 0, 1.0f);
+}
+
+
+void UInteractionComponent::TickComponent(float DeltaTime, ELevelTick TickType, FActorComponentTickFunction* ThisTickFunction)
+{
+	Super::TickComponent(DeltaTime, TickType, ThisTickFunction);
+    CheckForInteractable();
+}
+

Source/Exo/Public/Interfaces/Interactable.h

@@ -0,0 +1,20 @@
+#pragma once
+
+#include "CoreMinimal.h"
+#include "UObject/Interface.h"
+#include "Interactable.generated.h"
+
+UINTERFACE(MinimalAPI, Blueprintable)
+class UInteractable : public UInterface
+{
+	GENERATED_BODY()
+};
+
+class EXO_API IInteractable
+{
+    GENERATED_BODY()
+
+public:
+    UFUNCTION(BlueprintNativeEvent, BlueprintCallable, Category = "Interaction")
+    void Interact();
+};

Source/Exo/Public/Player/InteractionComponent.h

@@ -0,0 +1,35 @@
+#pragma once
+
+#include "CoreMinimal.h"
+#include "Components/ActorComponent.h"
+#include "Interfaces/Interactable.h"
+#include "InteractionComponent.generated.h"
+
+
+UCLASS( ClassGroup=(Custom), meta=(BlueprintSpawnableComponent) )
+class EXO_API UInteractionComponent : public UActorComponent
+{
+	GENERATED_BODY()
+
+public:	
+	// Sets default values for this component's properties
+	UInteractionComponent();
+
+	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category="Settings")
+	float InteractionDistance = 100.0f;
+
+	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category="Debug")
+	bool bShowDebugLine = false;
+
+protected:
+	// Called when the game starts
+	virtual void BeginPlay() override;
+
+public:	
+	// Called every frame
+	virtual void TickComponent(float DeltaTime, ELevelTick TickType, FActorComponentTickFunction* ThisTickFunction) override;
+
+private:
+	void CheckForInteractable();
+
+};