UE4 GAS 04 -伤害设置

秒速五厘米 2023-01-23 06:51 23阅读 0赞

> 初学GAS，仅用作自己查缺补漏，不想再做时又去找视频  
> 参考教程：  
> 英文原版(联机)：Ambience Lee：  
> [https://www.udemy.com/course/introduction-to-unreal-engine-4-ability-system/][https_www.udemy.com_course_introduction-to-unreal-engine-4-ability-system]  
> 中文翻译重置(单机)：小明：  
> [https://space.bilibili.com/149146076/channel/detail?cid=127939&ctype=0][https_space.bilibili.com_149146076_channel_detail_cid_127939_ctype_0]

# 一、碰到敌人时给自己推送伤害消息，Target为敌人 #

![在这里插入图片描述][20210713142824132.png]

# 二、在GA中等待发送过来的Damage事件并对击中者设置效果，当动画播放完成或取消后停止StopAbility #

![在这里插入图片描述][2021071314373155.png]  
![在这里插入图片描述][20210713203426532.png]

# 三、设置击中效果GameplayEffect类 #

![在这里插入图片描述][20210713203608568.png]

# 四、通过绑定变量变化反射来更新血量 #

## 4.1、自己创建血量UI并设置更新函数 ##

## 4.2、c++中override PostGameplayEffectExecute函数进行属性改变检测，顺便进行生命值限制 ##

AttributeSetBase.h

DECLARE_DYNAMIC_MULTICAST_DELEGATE_TwoParams(FOnHealthChanged, float, CurHealth, float, MaxHealth);
    	UPROPERTY(BlueprintAssignable)
    		FOnHealthChanged OnHealthChanged;
    
    	void PostGameplayEffectExecute(const struct FGameplayEffectModCallbackData& Data) override;

AttributeSetBase.cpp

#include "AttributeSetBase.h"
    #include "GameplayEffectExtension.h"
    #include "GameplayEffect.h"
    
    UAttributeSetBase::UAttributeSetBase()
    	:MaxHealth(100.f),Health(MaxHealth)
    {
        
    }
    
    void UAttributeSetBase::PostGameplayEffectExecute(const struct FGameplayEffectModCallbackData& Data)
    {
        
    	if (Data.EvaluatedData.Attribute.GetUProperty() == FindFieldChecked<FProperty>(UAttributeSetBase::StaticClass(), GET_MEMBER_NAME_CHECKED(UAttributeSetBase, Health)))
    	{
        
    
    		//生命值限制
    		Health.SetCurrentValue(FMath::Clamp(Health.GetCurrentValue(), 0.f, MaxHealth.GetCurrentValue()));
    		//生命值变化广播
    		OnHealthChanged.Broadcast( Health.GetCurrentValue(),MaxHealth.GetCurrentValue());
    		//打印生命值到Log
    		UE_LOG(LogTemp, Warning, TEXT("Health is %f"), Health.GetCurrentValue());
    	}
    }

## 4.3、蓝图中自行绑定函数、加了死亡逻辑 ##

![在这里插入图片描述][20210713205805271.png]  
这样一个具有简单逻辑的GAS项目就起来了

[https_www.udemy.com_course_introduction-to-unreal-engine-4-ability-system]: https://www.udemy.com/course/introduction-to-unreal-engine-4-ability-system/
[https_space.bilibili.com_149146076_channel_detail_cid_127939_ctype_0]: https://space.bilibili.com/149146076/channel/detail?cid=127939&ctype=0
[20210713142824132.png]: /images/20221004/8e76ebaa284b485b921fc5da0aeacdd9.png
[2021071314373155.png]: /images/20221004/c30791c8981c4d189831d708151c22ce.png
[20210713203426532.png]: /images/20221004/75c000fa446042328075c4f377ccb44e.png
[20210713203608568.png]: /images/20221004/7cc0c76974c1421d914aee16d9f67127.png
[20210713205805271.png]: /images/20221004/da86e19b9445467ea90f1a29bc9d6295.png