Source/Nakatomi/NakatomiCMC.cpp

@@ -5,6 +5,11 @@
 
 #include <GameFramework/Character.h>
 
+UNakatomiCMC::UNakatomiCMC(): Safe_bWantsToSprint(false)
+{
+	NavAgentProps.bCanCrouch = true;
+}
+
 // Checks if we can combine the NewMove with the current move to save on data.
 // If all the data in a saved move is identical, if true, we cam tell the server to run the existing move instead.
 bool UNakatomiCMC::FSavedMove_Nakatomi::CanCombineWith(const FSavedMovePtr& NewMove, ACharacter* InCharacter,
@@ -83,10 +88,6 @@ FNetworkPredictionData_Client* UNakatomiCMC::GetPredictionData_Client() const
 	return ClientPredictionData;
 }
 
-UNakatomiCMC::UNakatomiCMC(): Safe_bWantsToSprint(false)
-{
-}
-
 void UNakatomiCMC::UpdateFromCompressedFlags(uint8 Flags)
 {
 	Super::UpdateFromCompressedFlags(Flags);
@@ -119,4 +120,14 @@ void UNakatomiCMC::EnableSprint()
 void UNakatomiCMC::DisableSprint()
 {
 	Safe_bWantsToSprint = false;
-}
+}
+
+void UNakatomiCMC::EnableCrouch()
+{
+	bWantsToCrouch = true;
+}
+
+void UNakatomiCMC::DisableCrouch()
+{
+	bWantsToCrouch = false;
+}

Source/Nakatomi/NakatomiCMC.h

@@ -57,4 +57,10 @@ public:
 
 	UFUNCTION(BlueprintCallable)
 	void DisableSprint();
+
+	UFUNCTION(BlueprintCallable)
+	void EnableCrouch();
+
+	UFUNCTION(BlueprintCallable)
+	void DisableCrouch();
 };

Source/Nakatomi/PlayerCharacter.cpp

@@ -187,6 +187,12 @@ void APlayerCharacter::SetupPlayerInputComponent(UInputComponent* PlayerInputCom
 		{
 			Input->BindAction(PauseAction, ETriggerEvent::Completed, this, &APlayerCharacter::PauseCallback);
 		}
+
+		if (CrouchAction)
+		{
+			Input->BindAction(CrouchAction, ETriggerEvent::Started, this, &APlayerCharacter::BeginCrouchCallback);
+			Input->BindAction(CrouchAction, ETriggerEvent::Completed, this, &APlayerCharacter::EndCrouchCallback);
+		}
 	}
 }
 
@@ -268,17 +274,21 @@ void APlayerCharacter::QuitCallback(const FInputActionInstance& Instance)
 
 void APlayerCharacter::SetSprintingCallback(const FInputActionInstance& Instance)
 {
-	if (NakatomiCMC)
+	UNakatomiCMC* cmc = GetCharacterMovementComponent();
+	
+	if (cmc)
 	{
-		NakatomiCMC->EnableSprint();
+		cmc->EnableSprint();
 	}
 }
 
 void APlayerCharacter::SetWalkingCallback(const FInputActionInstance& Instance)
 {
-	if (NakatomiCMC)
+	UNakatomiCMC* cmc = GetCharacterMovementComponent();
+	
+	if (cmc)
 	{
-		NakatomiCMC->DisableSprint();
+		cmc->DisableSprint();
 	}
 }
 
@@ -536,6 +546,26 @@ void APlayerCharacter::PauseCallback(const FInputActionInstance& Instance)
 	}
 }
 
+void APlayerCharacter::BeginCrouchCallback(const FInputActionInstance& Instance)
+{
+	UNakatomiCMC* cmc = GetCharacterMovementComponent();
+	
+	if (cmc)
+	{
+		cmc->EnableCrouch();
+	}
+}
+
+void APlayerCharacter::EndCrouchCallback(const FInputActionInstance& Instance)
+{
+	UNakatomiCMC* cmc = GetCharacterMovementComponent();
+	
+	if (cmc)
+	{
+		cmc->DisableCrouch();
+	}
+}
+
 void APlayerCharacter::OnFire()
 {
 	if (!IsFiring || CurrentWeapon->GetAmmoCount() == 0)
@@ -684,4 +714,4 @@ AThrowable* APlayerCharacter::ThrowThrowable()
 	}
 
 	return nullptr;
-}
+}

Source/Nakatomi/PlayerCharacter.h

@@ -64,6 +64,9 @@ public:
 
 	UPROPERTY(EditDefaultsOnly, BlueprintReadWrite)
 	UInputAction* AimDownSightsAction;
+
+	UPROPERTY(EditDefaultsOnly, BlueprintReadWrite)
+	UInputAction* CrouchAction;
 	
 	UPROPERTY(EditDefaultsOnly, BlueprintReadWrite)
 	TSoftObjectPtr<UInputMappingContext> InputMappingContext;
@@ -174,6 +177,10 @@ public:
 	void EndAimDownSightsCallback(const FInputActionInstance& Instance);
 
 	void PauseCallback(const FInputActionInstance& Instance);
+
+	void BeginCrouchCallback(const FInputActionInstance& Instance);
+
+	void EndCrouchCallback(const FInputActionInstance& Instance);
 	
 	virtual void OnFire() override;