Füge HealthDebuff-Mechanik hinzu

Die HealthComponent wurde erweitert, um einen neuen `HealthDebuff`-Wert zu unterstützen, der einen Teil der maximalen Gesundheit des Charakters unbrauchbar macht.

- Neue Methoden `GetHealthDebuff`, `SetHealthDebuff` und `GetEffectiveMaxHealth` hinzugefügt.
- `CurrentHealth` wird nun gegen den effektiven Maximalwert (`GetEffectiveMaxHealth`) begrenzt.
- Neues Event `OnHealthDebuffChanged` implementiert, um Änderungen am Debuff zu signalisieren.
- HealthBar-Widget aktualisiert, um den `HealthDebuff` dynamisch anzuzeigen.
- Sprint-Logik verbessert: Sprinten nur möglich, wenn der Charakter am Boden ist.
- Binärdateien (`BP_ThirdPersonCharacter.uasset`, `WBP_StaminaBar.uasset`) geändert.

Source/KingshearthLegacy/HealthComponent.cpp

@@ -9,7 +9,7 @@ void UHealthComponent::BeginPlay()
 {
 	Super::BeginPlay();
 
-	CurrentHealth = MaxHealth;
+	CurrentHealth = GetEffectiveMaxHealth();
 }
 
 float UHealthComponent::GetHealth() const
@@ -22,18 +22,28 @@ float UHealthComponent::GetMaxHealth() const
 	return MaxHealth;
 }
 
+float UHealthComponent::GetHealthDebuff() const
+{
+	return HealthDebuff;
+}
+
+float UHealthComponent::GetEffectiveMaxHealth() const
+{
+	return MaxHealth * (1.0f - HealthDebuff);
+}
+
 void UHealthComponent::SetMaxHealth(float NewMaxHealth)
 {
 	MaxHealth = FMath::Max(NewMaxHealth, 0.0f);
 
-	CurrentHealth = FMath::Clamp(CurrentHealth, 0.0f, MaxHealth);
+	CurrentHealth = FMath::Clamp(CurrentHealth, 0.0f, GetEffectiveMaxHealth());
 }
 
 void UHealthComponent::SetHealth(float NewHealth)
 {
 	const float PreviousHealth = CurrentHealth;
 
-	CurrentHealth = FMath::Clamp(NewHealth, 0.0f, MaxHealth);
+	CurrentHealth = FMath::Clamp(NewHealth, 0.0f, GetEffectiveMaxHealth());
 
 	OnHealthChanged.Broadcast(CurrentHealth);
 
@@ -63,3 +73,17 @@ void UHealthComponent::RemoveHealth(float Amount)
 
 	SetHealth(CurrentHealth - Amount);
 }
+
+void UHealthComponent::SetHealthDebuff(float NewHealthDebuff)
+{
+	HealthDebuff = FMath::Clamp(NewHealthDebuff, 0.0f, 1.0f);
+
+	const float ClampedHealth = FMath::Clamp(CurrentHealth, 0.0f, GetEffectiveMaxHealth());
+	if (!FMath::IsNearlyEqual(ClampedHealth, CurrentHealth))
+	{
+		CurrentHealth = ClampedHealth;
+		OnHealthChanged.Broadcast(CurrentHealth);
+	}
+
+	OnHealthDebuffChanged.Broadcast(HealthDebuff);
+}

Source/KingshearthLegacy/HealthComponent.h

@@ -5,6 +5,7 @@
 #include "HealthComponent.generated.h"
 
 DECLARE_DYNAMIC_MULTICAST_DELEGATE_OneParam(FOnHealthChanged, float, NewHealth);
+DECLARE_DYNAMIC_MULTICAST_DELEGATE_OneParam(FOnHealthDebuffChanged, float, NewHealthDebuff);
 DECLARE_DYNAMIC_MULTICAST_DELEGATE(FOnDeath);
 
 UCLASS(ClassGroup = (Custom), meta = (BlueprintSpawnableComponent))
@@ -23,9 +24,14 @@ public:
 	UFUNCTION(BlueprintPure, Category = "Health")
 	float GetHealth() const;
 
+	/** Nominal cap, unaffected by HealthDebuff. Feeds the health bar's total width. */
 	UFUNCTION(BlueprintPure, Category = "Health")
 	float GetMaxHealth() const;
 
+	/** 0-1 fraction of MaxHealth currently locked/unusable (curses, status effects, ...). */
+	UFUNCTION(BlueprintPure, Category = "Health")
+	float GetHealthDebuff() const;
+
 	UFUNCTION(BlueprintCallable, Category = "Health")
 	void SetMaxHealth(float NewMaxHealth);
 
@@ -38,17 +44,30 @@ public:
 	UFUNCTION(BlueprintCallable, Category = "Health")
 	void RemoveHealth(float Amount);
 
+	/** Sets how much of MaxHealth is currently locked away (0-1). Not driven by anything yet - a future debuff/curse/status-effect system calls this. */
+	UFUNCTION(BlueprintCallable, Category = "Health")
+	void SetHealthDebuff(float NewHealthDebuff);
+
 protected:
+	/** MaxHealth minus whatever HealthDebuff currently locks away - what Health is actually clamped against. */
+	float GetEffectiveMaxHealth() const;
+
 	UPROPERTY(EditAnywhere, BlueprintReadOnly, Category = "Health")
 	float MaxHealth = 100.0f;
 
 	UPROPERTY(VisibleAnywhere, BlueprintReadOnly, Category = "Health")
 	float CurrentHealth = 100.0f;
 
+	UPROPERTY(VisibleAnywhere, BlueprintReadOnly, Category = "Health")
+	float HealthDebuff = 0.0f;
+
 public:
 	UPROPERTY(BlueprintAssignable, Category = "Health")
 	FOnHealthChanged OnHealthChanged;
 
+	UPROPERTY(BlueprintAssignable, Category = "Health")
+	FOnHealthDebuffChanged OnHealthDebuffChanged;
+
 	UPROPERTY(BlueprintAssignable, Category = "Health")
 	FOnDeath OnDeath;
 };

Source/KingshearthLegacy/KingshearthLegacyCharacter.cpp

@@ -11,6 +11,7 @@
 #include "EnhancedInputSubsystems.h"
 #include "InputActionValue.h"
 #include "KingshearthLegacy.h"
+#include "StaminaComponent.h"
 
 AKingshearthLegacyCharacter::AKingshearthLegacyCharacter()
 {
@@ -50,6 +51,37 @@ AKingshearthLegacyCharacter::AKingshearthLegacyCharacter()
 	// are set in the derived blueprint asset named ThirdPersonCharacter (to avoid direct content references in C++)
 }
 
+void AKingshearthLegacyCharacter::BeginPlay()
+{
+	Super::BeginPlay();
+
+	BaseWalkSpeed = GetCharacterMovement()->MaxWalkSpeed;
+	StaminaComponent = FindComponentByClass<UStaminaComponent>();
+}
+
+void AKingshearthLegacyCharacter::Tick(float DeltaSeconds)
+{
+	Super::Tick(DeltaSeconds);
+
+	if (!StaminaComponent)
+	{
+		return;
+	}
+
+	const bool bIsMoving = GetVelocity().SizeSquared() > FMath::Square(SprintMovementThreshold);
+	const bool bIsGrounded = GetCharacterMovement()->IsMovingOnGround();
+
+	if (bWantsToSprint && bIsMoving && bIsGrounded && StaminaComponent->GetStamina() > 0.0f)
+	{
+		GetCharacterMovement()->MaxWalkSpeed = BaseWalkSpeed * SprintSpeedMultiplier;
+		StaminaComponent->RemoveStamina(SprintStaminaDrainRate * DeltaSeconds);
+	}
+	else
+	{
+		GetCharacterMovement()->MaxWalkSpeed = BaseWalkSpeed;
+	}
+}
+
 void AKingshearthLegacyCharacter::SetupPlayerInputComponent(UInputComponent* PlayerInputComponent)
 {
 	// Set up action bindings
@@ -65,6 +97,10 @@ void AKingshearthLegacyCharacter::SetupPlayerInputComponent(UInputComponent* Pla
 
 		// Looking
 		EnhancedInputComponent->BindAction(LookAction, ETriggerEvent::Triggered, this, &AKingshearthLegacyCharacter::Look);
+
+		// Sprinting
+		EnhancedInputComponent->BindAction(SprintAction, ETriggerEvent::Started, this, &AKingshearthLegacyCharacter::StartSprint);
+		EnhancedInputComponent->BindAction(SprintAction, ETriggerEvent::Completed, this, &AKingshearthLegacyCharacter::StopSprint);
 	}
 	else
 	{
@@ -131,3 +167,25 @@ void AKingshearthLegacyCharacter::DoJumpEnd()
 	// signal the character to stop jumping
 	StopJumping();
 }
+
+void AKingshearthLegacyCharacter::Jump()
+{
+	const bool bCouldJump = CanJump();
+
+	Super::Jump();
+
+	if (bCouldJump && StaminaComponent)
+	{
+		StaminaComponent->RemoveStamina(JumpStaminaCost);
+	}
+}
+
+void AKingshearthLegacyCharacter::StartSprint()
+{
+	bWantsToSprint = true;
+}
+
+void AKingshearthLegacyCharacter::StopSprint()
+{
+	bWantsToSprint = false;
+}

Source/KingshearthLegacy/KingshearthLegacyCharacter.h

@@ -10,6 +10,7 @@
 class USpringArmComponent;
 class UCameraComponent;
 class UInputAction;
+class UStaminaComponent;
 struct FInputActionValue;
 
 DECLARE_LOG_CATEGORY_EXTERN(LogTemplateCharacter, Log, All);
@@ -49,6 +50,26 @@ protected:
 	UPROPERTY(EditAnywhere, Category="Input")
 	UInputAction* MouseLookAction;
 
+	/** Sprint Input Action */
+	UPROPERTY(EditAnywhere, Category="Input")
+	UInputAction* SprintAction;
+
+	/** Walk speed is multiplied by this while sprinting */
+	UPROPERTY(EditAnywhere, Category="Sprint")
+	float SprintSpeedMultiplier = 1.6f;
+
+	/** Stamina drained per second while sprinting */
+	UPROPERTY(EditAnywhere, Category="Sprint")
+	float SprintStaminaDrainRate = 25.0f;
+
+	/** Minimum speed (cm/s) for the character to be considered "moving" for sprint purposes. */
+	UPROPERTY(EditAnywhere, Category="Sprint")
+	float SprintMovementThreshold = 10.0f;
+
+	/** Stamina consumed by each successful jump. */
+	UPROPERTY(EditAnywhere, Category="Stamina")
+	float JumpStaminaCost = 15.0f;
+
 public:
 
 	/** Constructor */
@@ -56,9 +77,15 @@ public:
 
 protected:
 
+	virtual void BeginPlay() override;
+	virtual void Tick(float DeltaSeconds) override;
+
 	/** Initialize input action bindings */
 	virtual void SetupPlayerInputComponent(class UInputComponent* PlayerInputComponent) override;
 
+	/** Overridden to charge JumpStaminaCost whenever a jump actually starts. */
+	virtual void Jump() override;
+
 protected:
 
 	/** Called for movement input */
@@ -67,6 +94,20 @@ protected:
 	/** Called for looking input */
 	void Look(const FInputActionValue& Value);
 
+	/** Called when the sprint input is pressed */
+	void StartSprint();
+
+	/** Called when the sprint input is released */
+	void StopSprint();
+
+	/** Cached from the CharacterMovementComponent's MaxWalkSpeed in BeginPlay, restored whenever not sprinting. */
+	float BaseWalkSpeed = 0.0f;
+
+	bool bWantsToSprint = false;
+
+	UPROPERTY()
+	TObjectPtr<UStaminaComponent> StaminaComponent;
+
 public:
 
 	/** Handles move inputs from either controls or UI interfaces */

Source/KingshearthLegacy/KingshearthLegacyPlayerController.cpp

@@ -10,6 +10,7 @@
 #include "Widgets/Input/SVirtualJoystick.h"
 #include "UI/PlayerHUDWidget.h"
 #include "HealthComponent.h"
+#include "StaminaComponent.h"
 
 void AKingshearthLegacyPlayerController::BeginPlay()
 {
@@ -87,7 +88,7 @@ void AKingshearthLegacyPlayerController::OnPossess(APawn* InPawn)
 
 	if (PlayerHUD)
 	{
-		PlayerHUD->InitializeHUD(InPawn->FindComponentByClass<UHealthComponent>());
+		PlayerHUD->InitializeHUD(InPawn->FindComponentByClass<UHealthComponent>(), InPawn->FindComponentByClass<UStaminaComponent>());
 	}
 }
 

Source/KingshearthLegacy/StaminaComponent.cpp

@@ -0,0 +1,115 @@
+#include "StaminaComponent.h"
+
+UStaminaComponent::UStaminaComponent()
+{
+	PrimaryComponentTick.bCanEverTick = true;
+}
+
+void UStaminaComponent::BeginPlay()
+{
+	Super::BeginPlay();
+
+	CurrentStamina = MaxStamina;
+}
+
+void UStaminaComponent::TickComponent(float DeltaTime, ELevelTick TickType, FActorComponentTickFunction* ThisTickFunction)
+{
+	Super::TickComponent(DeltaTime, TickType, ThisTickFunction);
+
+	TimeSinceLastStaminaSpend += DeltaTime;
+
+	const float TimeSinceRegenStarted = TimeSinceLastStaminaSpend - StaminaRegenDelay;
+	if (TimeSinceRegenStarted > 0.0f && CurrentStamina < GetEffectiveMaxStamina())
+	{
+		const float RampedRegenRate = StaminaRegenRampTime > 0.0f
+			? FMath::Min(TimeSinceRegenStarted / StaminaRegenRampTime, 1.0f) * StaminaRegenRate
+			: StaminaRegenRate;
+
+		SetStamina(CurrentStamina + RampedRegenRate * DeltaTime);
+
+		// Fatigue only builds while Stamina is actively regaining - never while draining, never
+		// while idle. It never recovers on its own; only an explicit SetFatigue call does.
+		SetFatigue(Fatigue + FatigueGainRateWhileRegaining * DeltaTime);
+	}
+}
+
+float UStaminaComponent::GetStamina() const
+{
+	return CurrentStamina;
+}
+
+float UStaminaComponent::GetMaxStamina() const
+{
+	return MaxStamina;
+}
+
+float UStaminaComponent::GetFatigue() const
+{
+	return Fatigue;
+}
+
+float UStaminaComponent::GetEffectiveMaxStamina() const
+{
+	return MaxStamina * (1.0f - Fatigue);
+}
+
+void UStaminaComponent::SetMaxStamina(float NewMaxStamina)
+{
+	MaxStamina = FMath::Max(NewMaxStamina, 0.0f);
+
+	CurrentStamina = FMath::Clamp(CurrentStamina, 0.0f, GetEffectiveMaxStamina());
+}
+
+void UStaminaComponent::SetStamina(float NewStamina)
+{
+	const float PreviousStamina = CurrentStamina;
+
+	CurrentStamina = FMath::Clamp(NewStamina, 0.0f, GetEffectiveMaxStamina());
+
+	if (CurrentStamina < PreviousStamina)
+	{
+		TimeSinceLastStaminaSpend = 0.0f;
+	}
+
+	OnStaminaChanged.Broadcast(CurrentStamina);
+
+	// Only trigger the exhaustion signal when crossing from not-empty to empty.
+	if (PreviousStamina > 0.0f && CurrentStamina <= 0.0f)
+	{
+		OnExhausted.Broadcast();
+	}
+}
+
+void UStaminaComponent::AddStamina(float Amount)
+{
+	if (Amount <= 0.0f)
+	{
+		return;
+	}
+
+	SetStamina(CurrentStamina + Amount);
+}
+
+void UStaminaComponent::RemoveStamina(float Amount)
+{
+	if (Amount <= 0.0f)
+	{
+		return;
+	}
+
+	SetStamina(CurrentStamina - Amount);
+}
+
+void UStaminaComponent::SetFatigue(float NewFatigue)
+{
+	Fatigue = FMath::Clamp(NewFatigue, 0.0f, 1.0f);
+
+	const float ClampedStamina = FMath::Clamp(CurrentStamina, 0.0f, GetEffectiveMaxStamina());
+	if (!FMath::IsNearlyEqual(ClampedStamina, CurrentStamina))
+	{
+		CurrentStamina = ClampedStamina;
+		OnStaminaChanged.Broadcast(CurrentStamina);
+	}
+
+	OnFatigueChanged.Broadcast(Fatigue);
+}

Source/KingshearthLegacy/StaminaComponent.h

@@ -0,0 +1,93 @@
+#pragma once
+
+#include "CoreMinimal.h"
+#include "Components/ActorComponent.h"
+#include "StaminaComponent.generated.h"
+
+DECLARE_DYNAMIC_MULTICAST_DELEGATE_OneParam(FOnStaminaChanged, float, NewStamina);
+DECLARE_DYNAMIC_MULTICAST_DELEGATE_OneParam(FOnFatigueChanged, float, NewFatigue);
+DECLARE_DYNAMIC_MULTICAST_DELEGATE(FOnExhausted);
+
+UCLASS(ClassGroup = (Custom), meta = (BlueprintSpawnableComponent))
+class KINGSHEARTHLEGACY_API UStaminaComponent : public UActorComponent
+{
+	GENERATED_BODY()
+
+public:
+	UStaminaComponent();
+
+protected:
+	virtual void BeginPlay() override;
+	virtual void TickComponent(float DeltaTime, ELevelTick TickType, FActorComponentTickFunction* ThisTickFunction) override;
+
+public:
+	// Stamina
+	UFUNCTION(BlueprintPure, Category = "Stamina")
+	float GetStamina() const;
+
+	/** Nominal cap, unaffected by Fatigue. Feeds the stamina bar's total width. */
+	UFUNCTION(BlueprintPure, Category = "Stamina")
+	float GetMaxStamina() const;
+
+	/** 0-1 fraction of MaxStamina currently locked/unusable due to over-extension. */
+	UFUNCTION(BlueprintPure, Category = "Stamina")
+	float GetFatigue() const;
+
+	UFUNCTION(BlueprintCallable, Category = "Stamina")
+	void SetMaxStamina(float NewMaxStamina);
+
+	UFUNCTION(BlueprintCallable, Category = "Stamina")
+	void SetStamina(float NewStamina);
+
+	UFUNCTION(BlueprintCallable, Category = "Stamina")
+	void AddStamina(float Amount);
+
+	UFUNCTION(BlueprintCallable, Category = "Stamina")
+	void RemoveStamina(float Amount);
+
+	UFUNCTION(BlueprintCallable, Category = "Fatigue")
+	void SetFatigue(float NewFatigue);
+
+protected:
+	/** MaxStamina minus whatever Fatigue currently locks away - what Stamina is actually clamped against. */
+	float GetEffectiveMaxStamina() const;
+
+	UPROPERTY(EditAnywhere, BlueprintReadOnly, Category = "Stamina")
+	float MaxStamina = 100.0f;
+
+	UPROPERTY(VisibleAnywhere, BlueprintReadOnly, Category = "Stamina")
+	float CurrentStamina = 100.0f;
+
+	UPROPERTY(VisibleAnywhere, BlueprintReadOnly, Category = "Fatigue")
+	float Fatigue = 0.0f;
+
+	/** Regen rate once fully ramped up, in stamina/sec. */
+	UPROPERTY(EditAnywhere, BlueprintReadOnly, Category = "Stamina")
+	float StaminaRegenRate = 20.0f;
+
+	/** Seconds after the last stamina spend before regen starts at all. */
+	UPROPERTY(EditAnywhere, BlueprintReadOnly, Category = "Stamina")
+	float StaminaRegenDelay = 1.0f;
+
+	/** Seconds for the regen rate to ramp from 0 up to StaminaRegenRate once regen starts, instead of kicking in at full speed immediately. */
+	UPROPERTY(EditAnywhere, BlueprintReadOnly, Category = "Stamina")
+	float StaminaRegenRampTime = 1.5f;
+
+	/** Seconds since Stamina was last reduced by a spend (RemoveStamina/SetStamina decrease). Resets the regen delay/ramp whenever stamina is spent. */
+	float TimeSinceLastStaminaSpend = 0.0f;
+
+	/** Fatigue gained per second while Stamina is actively regaining (ramping back up). Never recovers on its own otherwise - only an explicit SetFatigue call (e.g. a debug key) reduces it. */
+	UPROPERTY(EditAnywhere, BlueprintReadOnly, Category = "Fatigue")
+	float FatigueGainRateWhileRegaining = 0.1f;
+
+public:
+	UPROPERTY(BlueprintAssignable, Category = "Stamina")
+	FOnStaminaChanged OnStaminaChanged;
+
+	UPROPERTY(BlueprintAssignable, Category = "Fatigue")
+	FOnFatigueChanged OnFatigueChanged;
+
+	/** Broadcast when Stamina is driven from a positive value to empty. */
+	UPROPERTY(BlueprintAssignable, Category = "Stamina")
+	FOnExhausted OnExhausted;
+};

Source/KingshearthLegacy/UI/HealthBarWidget.cpp

@@ -11,16 +11,18 @@ void UHealthBarWidget::InitializeHealthBar(UHealthComponent* InHealthComponent)
 	if (HealthComponent)
 	{
 		HealthComponent->OnHealthChanged.RemoveDynamic(this, &UHealthBarWidget::HandleHealthChanged);
+		HealthComponent->OnHealthDebuffChanged.RemoveDynamic(this, &UHealthBarWidget::HandleHealthDebuffChanged);
 		HealthComponent->OnDeath.RemoveDynamic(this, &UHealthBarWidget::HandleDeath);
 	}
 
 	HealthComponent = InHealthComponent;
 
 	HealthComponent->OnHealthChanged.AddDynamic(this, &UHealthBarWidget::HandleHealthChanged);
+	HealthComponent->OnHealthDebuffChanged.AddDynamic(this, &UHealthBarWidget::HandleHealthDebuffChanged);
 	HealthComponent->OnDeath.AddDynamic(this, &UHealthBarWidget::HandleDeath);
 
 	SetStatValue(HealthComponent->GetHealth(), HealthComponent->GetMaxHealth());
-	SetMaxHealthDebuff(DefaultMaxHealthDebuffPercent);
+	SetMaxHealthDebuff(HealthComponent->GetHealthDebuff());
 }
 
 void UHealthBarWidget::SetMaxHealthDebuff(float InDebuffPercent)
@@ -36,6 +38,11 @@ void UHealthBarWidget::HandleHealthChanged(float NewHealth)
 	}
 }
 
+void UHealthBarWidget::HandleHealthDebuffChanged(float NewHealthDebuff)
+{
+	SetMaxHealthDebuff(NewHealthDebuff);
+}
+
 void UHealthBarWidget::HandleDeath()
 {
 	OnHealthDepleted();

Source/KingshearthLegacy/UI/HealthBarWidget.h

@@ -27,6 +27,9 @@ protected:
 	UFUNCTION()
 	void HandleHealthChanged(float NewHealth);
 
+	UFUNCTION()
+	void HandleHealthDebuffChanged(float NewHealthDebuff);
+
 	UFUNCTION()
 	void HandleDeath();
 
@@ -36,8 +39,4 @@ protected:
 
 	UPROPERTY(BlueprintReadOnly, Category = "Health")
 	TObjectPtr<UHealthComponent> HealthComponent;
-
-	/** 0-1 starting max-health debuff applied in InitializeHealthBar, e.g. 0.1 = 10% of max health locked/unusable. Defaults to 0 since this bar reflects a live component. */
-	UPROPERTY(EditDefaultsOnly, Category = "Health")
-	float DefaultMaxHealthDebuffPercent = 0.0f;
 };

Source/KingshearthLegacy/UI/PlayerHUDWidget.cpp

@@ -2,12 +2,15 @@
 #include "UI/HealthBarWidget.h"
 #include "UI/StaminaBarWidget.h"
 
-void UPlayerHUDWidget::InitializeHUD(UHealthComponent* InHealthComponent)
+void UPlayerHUDWidget::InitializeHUD(UHealthComponent* InHealthComponent, UStaminaComponent* InStaminaComponent)
 {
 	if (HealthBar)
 	{
 		HealthBar->InitializeHealthBar(InHealthComponent);
 	}
 
-	// StaminaBar self-initializes from hardcoded defaults in its own NativeConstruct.
+	if (StaminaBar)
+	{
+		StaminaBar->InitializeStaminaBar(InStaminaComponent);
+	}
 }

Source/KingshearthLegacy/UI/PlayerHUDWidget.h

@@ -7,6 +7,7 @@
 class UHealthBarWidget;
 class UStaminaBarWidget;
 class UHealthComponent;
+class UStaminaComponent;
 
 /**
  * Top-level player HUD. Owns a health bar and a stamina bar and forwards
@@ -20,7 +21,7 @@ class UPlayerHUDWidget : public UUserWidget
 
 public:
 	UFUNCTION(BlueprintCallable, Category = "HUD")
-	void InitializeHUD(UHealthComponent* InHealthComponent);
+	void InitializeHUD(UHealthComponent* InHealthComponent, UStaminaComponent* InStaminaComponent);
 
 protected:
 	UPROPERTY(BlueprintReadOnly, meta = (BindWidgetOptional = true))

Source/KingshearthLegacy/UI/StaminaBarWidget.cpp

@@ -1,11 +1,39 @@
 #include "StaminaBarWidget.h"
+#include "StaminaComponent.h"
 
-void UStaminaBarWidget::NativeConstruct()
+void UStaminaBarWidget::InitializeStaminaBar(UStaminaComponent* InStaminaComponent)
 {
-	Super::NativeConstruct();
+	if (!InStaminaComponent)
+	{
+		return;
+	}
 
-	SetStatValue(DefaultCurrentStamina, DefaultMaxStamina);
-	SetFatigue(DefaultFatigue);
+	if (StaminaComponent)
+	{
+		StaminaComponent->OnStaminaChanged.RemoveDynamic(this, &UStaminaBarWidget::HandleStaminaChanged);
+		StaminaComponent->OnFatigueChanged.RemoveDynamic(this, &UStaminaBarWidget::HandleFatigueChanged);
+	}
+
+	StaminaComponent = InStaminaComponent;
+
+	StaminaComponent->OnStaminaChanged.AddDynamic(this, &UStaminaBarWidget::HandleStaminaChanged);
+	StaminaComponent->OnFatigueChanged.AddDynamic(this, &UStaminaBarWidget::HandleFatigueChanged);
+
+	SetStatValue(StaminaComponent->GetStamina(), StaminaComponent->GetMaxStamina());
+	SetFatigue(StaminaComponent->GetFatigue());
+}
+
+void UStaminaBarWidget::HandleStaminaChanged(float NewStamina)
+{
+	if (StaminaComponent)
+	{
+		SetStatValue(NewStamina, StaminaComponent->GetMaxStamina());
+	}
+}
+
+void UStaminaBarWidget::HandleFatigueChanged(float NewFatigue)
+{
+	SetFatigue(NewFatigue);
 }
 
 void UStaminaBarWidget::SetFatigue(float NewFatigue)

Source/KingshearthLegacy/UI/StaminaBarWidget.h

@@ -4,16 +4,12 @@
 #include "UI/StatBarWidget.h"
 #include "StaminaBarWidget.generated.h"
 
+class UStaminaComponent;
+
 /**
- * Stat bar for stamina. Currently self-initializes from hardcoded defaults,
- * since there is no stamina/fatigue gameplay component (DataModel) yet.
- *
- * TODO: once a UStaminaComponent exists (mirroring UHealthComponent), replace
- * the hardcoded NativeConstruct initialization with an InitializeStaminaBar(
- * UStaminaComponent* InStaminaComponent) call bound to that component's own
- * OnStaminaChanged/OnFatigueChanged delegates, following the exact pattern
- * used by UHealthBarWidget::InitializeHealthBar. SetFatigue/OnFatigueChanged
- * below are already shaped for that hookup.
+ * Stat bar bound to a live UStaminaComponent. Call InitializeStaminaBar once the
+ * component is known (typically from the owning PlayerController on possession),
+ * mirroring UHealthBarWidget::InitializeHealthBar.
  */
 UCLASS(abstract)
 class UStaminaBarWidget : public UStatBarWidget
@@ -21,6 +17,9 @@ class UStaminaBarWidget : public UStatBarWidget
 	GENERATED_BODY()
 
 public:
+	UFUNCTION(BlueprintCallable, Category = "Stamina")
+	void InitializeStaminaBar(UStaminaComponent* InStaminaComponent);
+
 	UFUNCTION(BlueprintCallable, Category = "Fatigue")
 	void SetFatigue(float NewFatigue);
 
@@ -28,22 +27,18 @@ public:
 	float GetFatigue() const { return Fatigue; }
 
 protected:
-	virtual void NativeConstruct() override;
+	UFUNCTION()
+	void HandleStaminaChanged(float NewStamina);
 
-	/** Hook for Blueprint-side fatigue visuals (e.g. a darkened "locked" portion of the bar). Unused until a real fatigue value is fed in. */
+	UFUNCTION()
+	void HandleFatigueChanged(float NewFatigue);
+
+	/** Hook for Blueprint-side fatigue visuals (e.g. a darkened "locked" portion of the bar). */
 	UFUNCTION(BlueprintImplementableEvent, Category = "Fatigue")
 	void OnFatigueChanged(float NewFatigue);
 
-	/** Placeholder starting values until a real UStaminaComponent DataModel exists. */
-	UPROPERTY(EditDefaultsOnly, Category = "Stamina")
-	float DefaultCurrentStamina = 75.0f;
-
-	UPROPERTY(EditDefaultsOnly, Category = "Stamina")
-	float DefaultMaxStamina = 100.0f;
-
-	/** 0-1 starting fatigue applied in NativeConstruct, e.g. 0.1 = 10% of the bar locked/unusable. */
-	UPROPERTY(EditDefaultsOnly, Category = "Stamina")
-	float DefaultFatigue = 0.1f;
+	UPROPERTY(BlueprintReadOnly, Category = "Stamina")
+	TObjectPtr<UStaminaComponent> StaminaComponent;
 
 	/** 0-1 exhaustion amount. Drives the bar's penalty segment via SetPenaltyPercent. */
 	UPROPERTY(BlueprintReadOnly, Category = "Fatigue")