UE5多人MOBA+GAS 24、创建属性UI（一）

添加一些新的属性

添加一些新的属性

UCLASS()
class UCAttributeSet : public UAttributeSet
{
	// 攻击力
	UPROPERTY(ReplicatedUsing = OnRep_AttackDamage)
	FGameplayAttributeData AttackDamage;
	ATTRIBUTE_ACCESSORS(UCAttributeSet, AttackDamage)
	// 护甲值
	UPROPERTY(ReplicatedUsing = OnRep_Armor)
	FGameplayAttributeData Armor;
	ATTRIBUTE_ACCESSORS(UCAttributeSet, Armor)

	// 移动速度
	UPROPERTY(ReplicatedUsing = OnRep_MoveSpeed)
	FGameplayAttributeData MoveSpeed;
	ATTRIBUTE_ACCESSORS(UCAttributeSet, MoveSpeed)

	// 移动加速度
	UPROPERTY(ReplicatedUsing = OnRep_MoveAcceleration)
	FGameplayAttributeData MoveAcceleration;
	ATTRIBUTE_ACCESSORS(UCAttributeSet, MoveAcceleration)
	
	UFUNCTION()
	void OnRep_AttackDamage(const FGameplayAttributeData& OldValue);
	UFUNCTION()
	void OnRep_Armor(const FGameplayAttributeData& OldValue);
	UFUNCTION()
	void OnRep_MoveSpeed(const FGameplayAttributeData& OldValue);
	UFUNCTION()
	void OnRep_MoveAcceleration(const FGameplayAttributeData& OldValue);
};

void UCAttributeSet::GetLifetimeReplicatedProps(TArray<class FLifetimeProperty>& OutLifetimeProps) const
{
	Super::GetLifetimeReplicatedProps(OutLifetimeProps);
	DOREPLIFETIME_CONDITION_NOTIFY(UCAttributeSet, Health, COND_None, REPNOTIFY_Always);
	DOREPLIFETIME_CONDITION_NOTIFY(UCAttributeSet, MaxHealth, COND_None, REPNOTIFY_Always);
	DOREPLIFETIME_CONDITION_NOTIFY(UCAttributeSet, Mana, COND_None, REPNOTIFY_Always);
	DOREPLIFETIME_CONDITION_NOTIFY(UCAttributeSet, MaxMana, COND_None, REPNOTIFY_Always);

	DOREPLIFETIME_CONDITION_NOTIFY(UCAttributeSet, AttackDamage, COND_None, REPNOTIFY_Always);
	DOREPLIFETIME_CONDITION_NOTIFY(UCAttributeSet, Armor, COND_None, REPNOTIFY_Always);
	DOREPLIFETIME_CONDITION_NOTIFY(UCAttributeSet, MoveSpeed, COND_None, REPNOTIFY_Always);
	DOREPLIFETIME_CONDITION_NOTIFY(UCAttributeSet, MoveAcceleration, COND_None, REPNOTIFY_Always);
}

void UCAttributeSet::OnRep_AttackDamage(const FGameplayAttributeData& OldValue)
{
	GAMEPLAYATTRIBUTE_REPNOTIFY(UCAttributeSet, AttackDamage, OldValue);
}

void UCAttributeSet::OnRep_Armor(const FGameplayAttributeData& OldValue)
{
	GAMEPLAYATTRIBUTE_REPNOTIFY(UCAttributeSet, Armor, OldValue);
}

void UCAttributeSet::OnRep_MoveSpeed(const FGameplayAttributeData& OldValue)
{
	GAMEPLAYATTRIBUTE_REPNOTIFY(UCAttributeSet, MoveSpeed, OldValue);
}

void UCAttributeSet::OnRep_MoveAcceleration(const FGameplayAttributeData& OldValue)
{
	GAMEPLAYATTRIBUTE_REPNOTIFY(UCAttributeSet, MoveAcceleration, OldValue);
}

再创建一个玩家角色用的属性

// 幻雨喜欢小猫咪

#pragma once

#include "CoreMinimal.h"
#include "AttributeSet.h"
#include "AbilitySystemComponent.h"
#include "CHeroAttributeSet.generated.h"

// 属性访问器宏，自动生成属性的Getter/Setter等
#define ATTRIBUTE_ACCESSORS(ClassName, PropertyName) \
     GAMEPLAYATTRIBUTE_PROPERTY_GETTER(ClassName, PropertyName) \
     GAMEPLAYATTRIBUTE_VALUE_GETTER(PropertyName) \
     GAMEPLAYATTRIBUTE_VALUE_SETTER(PropertyName) \
     GAMEPLAYATTRIBUTE_VALUE_INITTER(PropertyName)

/**
 * 英雄属性集（UCHeroAttributeSet）
 * 用于管理英雄的成长属性、经验、等级、升级点、金币等
 * 支持属性同步、属性变化回调等功能
 */
UCLASS()
class UCHeroAttributeSet : public UAttributeSet
{
    GENERATED_BODY()
public:
    // 属性访问器声明（自动生成标准接口）
    ATTRIBUTE_ACCESSORS(UCHeroAttributeSet, Intelligence)             // 智力
    ATTRIBUTE_ACCESSORS(UCHeroAttributeSet, Strength)                 // 力量
    ATTRIBUTE_ACCESSORS(UCHeroAttributeSet, Experience)               // 当前经验
    ATTRIBUTE_ACCESSORS(UCHeroAttributeSet, PrevLevelExperience)      // 上一级所需经验
    ATTRIBUTE_ACCESSORS(UCHeroAttributeSet, NextLevelExperience)      // 下一级所需经验
    ATTRIBUTE_ACCESSORS(UCHeroAttributeSet, Level)                    // 当前等级
    ATTRIBUTE_ACCESSORS(UCHeroAttributeSet, UpgradePoint)             // 可用升级点
    ATTRIBUTE_ACCESSORS(UCHeroAttributeSet, MaxLevel)                 // 最大等级
    ATTRIBUTE_ACCESSORS(UCHeroAttributeSet, MaxLevelExperience)       // 满级所需经验
    ATTRIBUTE_ACCESSORS(UCHeroAttributeSet, Gold)                     // 金币
    ATTRIBUTE_ACCESSORS(UCHeroAttributeSet, StrengthGrowthRate)       // 力量成长率
    ATTRIBUTE_ACCESSORS(UCHeroAttributeSet, IntelligenceGrowthRate)   // 智力成长率

    // 属性同步（网络复制）配置
    virtual void GetLifetimeReplicatedProps( TArray< class FLifetimeProperty > & OutLifetimeProps ) const override;
private:
    // 智力
    UPROPERTY(ReplicatedUsing = OnRep_Intelligence)
    FGameplayAttributeData Intelligence;

    // 力量
    UPROPERTY(ReplicatedUsing = OnRep_Strength)
    FGameplayAttributeData Strength;
    
    // 当前经验
    UPROPERTY(ReplicatedUsing = OnRep_Experience)
    FGameplayAttributeData Experience;

    // 力量成长率
    UPROPERTY()
    FGameplayAttributeData StrengthGrowthRate;
    
    // 智力成长率
    UPROPERTY()
    FGameplayAttributeData IntelligenceGrowthRate;

    // 上一级所需经验
    UPROPERTY(ReplicatedUsing = OnRep_PrevLevelExperience)
    FGameplayAttributeData PrevLevelExperience;

    // 下一级所需经验
    UPROPERTY(ReplicatedUsing = OnRep_NextLevelExperience)
    FGameplayAttributeData NextLevelExperience;

    // 当前等级
    UPROPERTY(ReplicatedUsing = OnRep_Level)
    FGameplayAttributeData Level;
    
    // 可用升级点
    UPROPERTY(ReplicatedUsing = OnRep_UpgradePoint)
    FGameplayAttributeData UpgradePoint;
    
    // 最大等级
    UPROPERTY(ReplicatedUsing = OnRep_MaxLevel)
    FGameplayAttributeData MaxLevel;

    // 满级所需经验
    UPROPERTY(ReplicatedUsing = OnRep_MaxLevelExperience)
    FGameplayAttributeData MaxLevelExperience;

    // 金币
    UPROPERTY(ReplicatedUsing = OnRep_Gold)
    FGameplayAttributeData Gold;

    // 属性同步回调（用于客户端属性变化通知）
    UFUNCTION()
    void OnRep_Intelligence(const FGameplayAttributeData& OldValue);

    UFUNCTION()
    void OnRep_Strength(const FGameplayAttributeData& OldValue);

    UFUNCTION()
    void OnRep_Experience(const FGameplayAttributeData& OldValue);

    UFUNCTION()
    void OnRep_PrevLevelExperience(const FGameplayAttributeData& OldValue);

    UFUNCTION()
    void OnRep_NextLevelExperience(const FGameplayAttributeData& OldValue);

    UFUNCTION()
    void OnRep_Level(const FGameplayAttributeData& OldValue);

    UFUNCTION()
    void OnRep_UpgradePoint(const FGameplayAttributeData& OldValue);

    UFUNCTION()
    void OnRep_MaxLevel(const FGameplayAttributeData& OldValue);

    UFUNCTION()
    void OnRep_MaxLevelExperience(const FGameplayAttributeData& OldValue);

    UFUNCTION()
    void OnRep_Gold(const FGameplayAttributeData& OldValue);
};

// 幻雨喜欢小猫咪


#include "GAS/Core/CHeroAttributeSet.h"
#include "Net/UnrealNetwork.h"
#include "GameplayEffectExtension.h"

void UCHeroAttributeSet::GetLifetimeReplicatedProps(TArray<class FLifetimeProperty>& OutLifetimeProps) const
{
	Super::GetLifetimeReplicatedProps(OutLifetimeProps);

	DOREPLIFETIME_CONDITION_NOTIFY(UCHeroAttributeSet, Intelligence, COND_None, REPNOTIFY_Always);
	DOREPLIFETIME_CONDITION_NOTIFY(UCHeroAttributeSet, Strength, COND_None, REPNOTIFY_Always);
	DOREPLIFETIME_CONDITION_NOTIFY(UCHeroAttributeSet, Experience, COND_None, REPNOTIFY_Always);
	DOREPLIFETIME_CONDITION_NOTIFY(UCHeroAttributeSet, PrevLevelExperience, COND_None, REPNOTIFY_Always);
	DOREPLIFETIME_CONDITION_NOTIFY(UCHeroAttributeSet, NextLevelExperience, COND_None, REPNOTIFY_Always);
	DOREPLIFETIME_CONDITION_NOTIFY(UCHeroAttributeSet, Level, COND_None, REPNOTIFY_Always);
	DOREPLIFETIME_CONDITION_NOTIFY(UCHeroAttributeSet, UpgradePoint, COND_None, REPNOTIFY_Always);
	DOREPLIFETIME_CONDITION_NOTIFY(UCHeroAttributeSet, MaxLevel, COND_None, REPNOTIFY_Always);
	DOREPLIFETIME_CONDITION_NOTIFY(UCHeroAttributeSet, MaxLevelExperience, COND_None, REPNOTIFY_Always);
	DOREPLIFETIME_CONDITION_NOTIFY(UCHeroAttributeSet, Gold, COND_None, REPNOTIFY_Always);
}

void UCHeroAttributeSet::OnRep_Intelligence(const FGameplayAttributeData& OldValue)
{
	GAMEPLAYATTRIBUTE_REPNOTIFY(UCHeroAttributeSet, Intelligence, OldValue);
}

void UCHeroAttributeSet::OnRep_Strength(const FGameplayAttributeData& OldValue)
{
	GAMEPLAYATTRIBUTE_REPNOTIFY(UCHeroAttributeSet, Strength, OldValue);
}

void UCHeroAttributeSet::OnRep_Experience(const FGameplayAttributeData& OldValue)
{
	GAMEPLAYATTRIBUTE_REPNOTIFY(UCHeroAttributeSet, Experience, OldValue);
}

void UCHeroAttributeSet::OnRep_PrevLevelExperience(const FGameplayAttributeData& OldValue)
{
	GAMEPLAYATTRIBUTE_REPNOTIFY(UCHeroAttributeSet, PrevLevelExperience, OldValue);
}

void UCHeroAttributeSet::OnRep_NextLevelExperience(const FGameplayAttributeData& OldValue)
{
	GAMEPLAYATTRIBUTE_REPNOTIFY(UCHeroAttributeSet, NextLevelExperience, OldValue);
}

void UCHeroAttributeSet::OnRep_Level(const FGameplayAttributeData& OldValue)
{
	GAMEPLAYATTRIBUTE_REPNOTIFY(UCHeroAttributeSet, Level, OldValue);
}

void UCHeroAttributeSet::OnRep_UpgradePoint(const FGameplayAttributeData& OldValue)
{
	GAMEPLAYATTRIBUTE_REPNOTIFY(UCHeroAttributeSet, UpgradePoint, OldValue);
}

void UCHeroAttributeSet::OnRep_MaxLevel(const FGameplayAttributeData& OldValue)
{
	GAMEPLAYATTRIBUTE_REPNOTIFY(UCHeroAttributeSet, MaxLevel, OldValue);
}

void UCHeroAttributeSet::OnRep_MaxLevelExperience(const FGameplayAttributeData& OldValue)
{
	GAMEPLAYATTRIBUTE_REPNOTIFY(UCHeroAttributeSet, MaxLevelExperience, OldValue);
}

void UCHeroAttributeSet::OnRep_Gold(const FGameplayAttributeData& OldValue)
{
	GAMEPLAYATTRIBUTE_REPNOTIFY(UCHeroAttributeSet, Gold, OldValue);
}

在玩家角色中创建该属性集

#pragma region Gameplay Ability
private:
	// 瞄准状态变化时回调
	virtual void OnAimStateChanged(bool bIsAiming) override;
	UPROPERTY()
	TObjectPtr<UCHeroAttributeSet> HeroAttributeSet;
#pragma endregion

在构造函数中创建该属性集

ACPlayerCharacter::ACPlayerCharacter()
{
	HeroAttributeSet = CreateDefaultSubobject<UCHeroAttributeSet>(TEXT("HeroAttributeSet"));
}

创新一个UI用来显示属性

创建一个StatsGauge将属性传入过去显示

// 幻雨喜欢小猫咪

#pragma once

#include "CoreMinimal.h"
#include "AttributeSet.h"
#include "Blueprint/UserWidget.h"
#include "GameplayEffectTypes.h"
#include "Components/Image.h"
#include "Components/TextBlock.h"
#include "StatsGauge.generated.h"

/**
 * 绑定属性数值的UI
 */
UCLASS()
class CRUNCH_API UStatsGauge : public UUserWidget
{
	GENERATED_BODY()
public:
	// 构建前
	virtual void NativePreConstruct() override;
	// 构建时
	virtual void NativeConstruct() override;

private:
	// 属性图标控件
	UPROPERTY(meta=(BindWidget))
	TObjectPtr<UImage> Icon;

	// 属性数值文本控件
	UPROPERTY(meta=(BindWidget))
	TObjectPtr<UTextBlock> AttributeText;

	// 需要显示的属性
	UPROPERTY(EditAnywhere, Category = "Attribute")
	FGameplayAttribute Attribute;

	// 图标资源
	UPROPERTY(EditAnywhere, Category = "Visual")
	TObjectPtr<UTexture2D> IconTexture;

	// 设置属性数值显示
	void SetValue(float NewVal);

	// 数字格式化选项
	FNumberFormattingOptions NumberFormattingOptions;

	// 属性变化回调
	void AttributeChanged(const FOnAttributeChangeData& Data);
};

// 幻雨喜欢小猫咪


#include "UI/Gameplay/StatsGauge.h"

#include "AbilitySystemBlueprintLibrary.h"
#include "AbilitySystemComponent.h"

void UStatsGauge::NativePreConstruct()
{
	Super::NativePreConstruct();
	Icon->SetBrushFromTexture(IconTexture);
}

void UStatsGauge::NativeConstruct()
{
	Super::NativeConstruct();
	// 设置为整数格式
	NumberFormattingOptions.MaximumFractionalDigits = 0;
	APawn* OwnerPlayerPawn = GetOwningPlayerPawn();
	if (!OwnerPlayerPawn) return;

	UAbilitySystemComponent* OwnerASC = UAbilitySystemBlueprintLibrary::GetAbilitySystemComponent(OwnerPlayerPawn);
	if (OwnerASC)
	{
		bool bFound;
		float AttributeValue = OwnerASC->GetGameplayAttributeValue(Attribute, bFound);
		if (bFound)
		{
			SetValue(AttributeValue);
		}
		OwnerASC->GetGameplayAttributeValueChangeDelegate(Attribute).AddUObject(this, &UStatsGauge::AttributeChanged);
	}
}

void UStatsGauge::SetValue(float NewVal)
{
	AttributeText->SetText(FText::AsNumber(NewVal, &NumberFormattingOptions));
}

void UStatsGauge::AttributeChanged(const FOnAttributeChangeData& Data)
{
	SetValue(Data.NewValue);
}

将属性UI放到游戏界面中,在GameplayWidget中添加几个属性UI

	// 属性面板：攻击力显示控件
	UPROPERTY(meta=(BindWidget))
	TObjectPtr<UStatsGauge> AttackDamageGauge;

	// 属性面板：护甲显示控件
	UPROPERTY(meta=(BindWidget))
	TObjectPtr<UStatsGauge> ArmorGauge;

	// 属性面板：移动速度显示控件
	UPROPERTY(meta=(BindWidget))
	TObjectPtr<UStatsGauge> MoveSpeedGauge;

	// 属性面板：智力显示控件
	UPROPERTY(meta=(BindWidget))
	TObjectPtr<UStatsGauge> IntelligenceGauge;

	// 属性面板：力量显示控件
	UPROPERTY(meta=(BindWidget))
	TObjectPtr<UStatsGauge> StrengthGauge;

在蓝图中继承UI，并显示UI

去到UE中创建蓝图版本的属性UI，再将其添加到GameplayWidget中去

添加一个边界作为底色