HowTo Implement GamePlayCue in C++

[anonymous_user_669611a5]

Hi

Looking for help on implementing c++ gameplay Cue.
Here is what i have so far, but it never gets called. Only th ctor gets called

UCLASS()
class AC_JumpGameplayCue : public AGameplayCueNotify_Actor
{
	GENERATED_BODY()
	
	AC_JumpGameplayCue();
	
	virtual void HandleGameplayCue
	(
		AActor* in_pMyTarget,
		EGameplayCueEvent::Type in_eventType,
		const FGameplayCueParameters& in_rParameters
	) override;
};



AC_JumpGameplayCue::AC_JumpGameplayCue()
{
	GameplayCueTag = FGameplayTag::RequestGameplayTag(FName("Ability.Cue.Jump"));
}

void AC_JumpGameplayCue::HandleGameplayCue(AActor* in_pMyTarget, EGameplayCueEvent::Type in_eventType, const FGameplayCueParameters& in_rParameters)
{
	Super::HandleGameplayCue(in_pMyTarget, in_eventType, in_rParameters);
	GLog->Logf(	TEXT("Jump Handler Called event id = %d"), in_eventType);
}

I try to get the cue to run by calling execute on it inside ability

pGasComp->ExecuteGameplayCue(mvo_jumpAbilityCueTag);

Any tips much welcome cheers

[anonymous_user_669611a5]

Bump

[surmounter]

TagName should be started with “GameplayCue”
ex. GameplayCue.Jump

[anonymous_user_669611a5]

Thanks i already changed the tag name as suggested , but it does not resolve the question of what is the epic official solution to c++ gameplaycue. An implementation example.

My c++ gameplaycue never ever gets called, even with the correct tag, but my bp gameplaycue works, you just create a bp cue give it tag name and you can refer to it anywhere, but same does not work for c++ cue.

cheers

[anonymous_user_669611a5]

This is issue is still unresolved

The Cue works if its in blueprint.

But if its c++ Cue it does not work, meaning HandleGameplayCue never gets called , when other code calls Add,Execute, Remove etc on the cue.

Any tips as to how to implement gameplaycue in c++ much welcome

cheers

[bananasam (Sam Freed)]

Hi @anonymous_user_669611a5,
I’m curious if you ever figured this one out. I’m running into the same issue where my C++ GameplayCue is never called, but making an equivalent Blueprint GameplayCue works just fine.

The only other thing I added in addition to what you had was an override for UGameplayCueNotify_Static::HandlesEvent, but that’s not called either

Thanks in advance for any help or ideas!

[MrCr0w]

Hi Everyone,

After reviewing the code for the GameplayCueManager, I think I have found the problem.

There is a helper struct named FGameplayCueObjectLibrary that handles loading GameplayCues. It has two attributes for loading the assets into memory: ActorObjectLibrary and StaticObjectLibrary, both of which are of class UObjectLibrary.

In GameplayCueManager.cpp:787, they are initialized with LoadBlueprintAssetDataFromPaths(), which only loads assets from Blueprints.

There is another function called LoadAssetDataFromPaths that may help, but I wasn’t able to override the function InitObjectLibrary in a subclass (I could redefine it for my Subclass, but it wasn’t called due to it not being virtual in UGameplayCueManager).

I’m not even sure if the function LoadAssetDataFromPaths would work here.

Perhaps someone else has an idea to work this out.

My alternative was declaring the GameplayCues in C++ and inheriting from them with a BlueprintClass. This way, I was at least able to write the Cues in C++ (because of my aversion to Blueprints).

[Chonker5]

Out of all the dumbass ■■■■ this engine does on the regular, this has to be up there, no? Why does this CueManager thing even need to exist?

Having to create these Blueprint Cue “Handlers” is a joke , also, hilariously, those BPs cannot be renamed. They have to be GC_[YourGameplayTag]. If you do rename it, the next time you open the editor, it will have unlinked itself from the GameplayCue Editor, and you’ll have to redo it all over.

So the steps to make it work with C++ are:

1. Go to Tools → GameplayCue Editor
2. Handlers → Add New (This will create a BP called GC_[YourGameplayTag] inside a hardcoded, random af GameplayCueNotifies folder. DO NOT RENAME THE BLUEPRINT!)
3. Move the BP to a proper folder that you need it to be in.
4. Open it and do Class Settings → Parent Class, and re-parent it to YOUR custom C++ GameplayCue.
5. Pray to god, that for some BS reason something doesn’t break again.
6. Vomit all over yourself because there’s no way to make it work with C++ only.

Don’t forget that your cue tags MUST all start with GameplayCue.[YourGameplayTag] cause it’s hardcoded somewhere probably.

WHAT kind of wacky tobacky where they smoking, when they came up with this ■■■■?

[roseclass1]

SORRY FOR WEIRD ENGLISH cuz im not native speaker

In 5.0 ver
For using gameplaycue You need follow some conditions

1.Write down Gameplaycue directory

Config-DefaultGame.ini

[/Script/GameplayAbilities.AbilitySystemGlobals]
GameplayCueNotifyPaths=“/Game/YourDirectory”

This is Asset Directory, NOT source directory

2.Tags are must be start with GameplayCue ex)“GameplayCue.BlahBlah”

3.Using BP
I don’t know why their made like this
If you want to use own your GameplayCue class
Make BP class and save in GameplayCueNotifyPaths that you choose in 1section
else editor warn you
Sadly I dont know use Native CPP GameplayCue… Use child BP

4.Cpp class with UCLASS(Blueprintable, Category = “GameplayCueNotify”)
This is most upset part. Nobody tell me this
If Cpp class has no these tags?
Manager never recognize this class

I suffered same issues. hope that it works…

[Recognized]

@roseclass1 thank you, you’re a legend. I almost pulled all my hair out trying to figure this nonsense

[cjeiy]

I spent several days trying to solve this but never managed to get my c++ cues to be included in packaging even though it worked in the editor using the suggested solution above. I’m quite new so that’s for sure one reason, but I am very sure now that c++ cues are not really intended to work out of the box without changing the GameplayCueManager code ALOT - even with an “imposter blueprint”. Not being a direct child of one of the native GameplayCueNotify classes seems to be what is causing it not to be packaged.

Don’t create a c++ child class of e.g. UGameplayCueNotify_Static. It will not package. (at least from my experience)

1. Create your intended gameplay cue in C++
2. Make it a Blueprint library method and put all your code there
3. Create a Blueprint Gameplay Cue
4. Call your blueprint library method from your blueprint gameplay cue.

Hopefully someone finds this and it helps you so you can avoid my pain .

UCLASS()
class <API> UAttackerCue : public UBlueprintFunctionLibrary
{
    GENERATED_BODY()

public:
    UFUNCTION(BlueprintCallable, Category = "GameplayCueUtility")
    static bool ExecuteDefenderCue(AActor* Target, const FGameplayTagContainer& SourceTags, const FGameplayTagContainer& TargetTags);

Sometimes the easiest solution is the best solution I guess.

[yuri_yanarm]

Hey Everyone I was able to get this to work

GC_Dash.h

#include "CoreMinimal.h"
#include "GameplayCueNotify_Static.h"
#include "NiagaraSystem.h"
#include "NiagaraFunctionLibrary.h"
#include "GC_Dash.generated.h"

/**
 * 
 */
UCLASS()
class FPSPROJECT_API UGC_Dash : public UGameplayCueNotify_Static
{
	GENERATED_BODY()

	UGC_Dash();
	
	virtual void HandleGameplayCue(AActor* MyTarget, EGameplayCueEvent::Type EventType, const FGameplayCueParameters& Parameters) override;
	
};

GC_Dash.cpp

#include "MainContent/GameplayAbilitySystem/Cues/GC_Dash.h"
#include "MainContent/GameplayAbilitySystem/Characters/HeroCharacter.h"

UGC_Dash::UGC_Dash()
{
	GameplayCueTag = FGameplayTag::RequestGameplayTag(FName("GameplayCue.Dash.Active"));
	IsOverride = true;
}


void UGC_Dash::HandleGameplayCue(AActor* MyTarget, EGameplayCueEvent::Type EventType, const FGameplayCueParameters& Parameters)
{
	UE_LOG(LogTemp, Warning, TEXT("Dash GameplayCue HandleGameplayCue executed"));
	
	Super::HandleGameplayCue(MyTarget, EventType, Parameters);

	AHeroCharacter* CharacterRef = Cast<AHeroCharacter>(MyTarget);

	FString NS_DashPath = "/Game/MainContent/GameplayAbilitySystem/NiagaraEffects/NS_Dash.NS_Dash";

	UNiagaraSystem* DashEffect = Cast<UNiagaraSystem>(StaticLoadObject(UNiagaraSystem::StaticClass(), nullptr, *NS_DashPath));
	
	switch (EventType)
	{
	case EGameplayCueEvent::OnActive:
		UNiagaraFunctionLibrary::SpawnSystemAttached(
			DashEffect,
			CharacterRef->CharacterCameraComponent,
			FName("None"),
			FVector(150.0f, 0.0f, 0.0f),
			FRotator(0.0f, 0.0f, 0.0f),
			FVector(1.0f, 1.0f, 1.0f),
			EAttachLocation::KeepRelativeOffset,
			true,
			ENCPoolMethod::None,
			true
		);
		UE_LOG(LogTemp, Warning, TEXT("Dash GameplayCue OnActive executed"));
		break;
	case EGameplayCueEvent::WhileActive:
		break;
	case EGameplayCueEvent::Executed:
		break;
	case EGameplayCueEvent::Removed:
		break;
	}
}

GA_Dash.cpp

void UGA_Dash::ActivateAbility(const FGameplayAbilitySpecHandle Handle, const FGameplayAbilityActorInfo* ActorInfo, const FGameplayAbilityActivationInfo ActivationInfo, const FGameplayEventData* TriggerEventData)
{

	if (!CommitAbility(Handle, ActorInfo, ActivationInfo))
	{
		EndAbility(Handle, ActorInfo, ActivationInfo, true, false);
		return;
	}
	 
	AActor* AvatarActor = ActorInfo->AvatarActor.Get();
	if (!AvatarActor)
	{
		EndAbility(Handle, ActorInfo, ActivationInfo, true, false);
		return;
	}
	 
	float DashStrength = 2000.f;
	float DashDuration = 0.3f;
	bool bIsAdditive = false;
	UCurveFloat* StrengthOverTime;
	 
	
	UAbilityTask_ApplyRootMotionConstantForce* DashTask = 
		UAbilityTask_ApplyRootMotionConstantForce::ApplyRootMotionConstantForce(
			this,
			NAME_None,            
			GetDashDirection(AvatarActor),
			DashStrength,
			DashDuration,
			bIsAdditive,
			StrengthOverTime = nullptr,
			ERootMotionFinishVelocityMode::ClampVelocity,
			FVector::ZeroVector,
			GetMaxSpeed(AvatarActor),
			false
		);
	if (DashTask)
	{
		FGameplayEffectContextHandle Context;
		K2_AddGameplayCue(FGameplayTag::RequestGameplayTag("GameplayCue.Dash.Active"), Context, true);
		DashTask->OnFinish.AddDynamic(this, &UGA_Dash::OnDashFinished);
		DashTask->ReadyForActivation();
	}
	else
	{
		EndAbility(Handle, ActorInfo, ActivationInfo, true, false);
	}
}

so first of all I implemented the gameplay ability called GA_Dash which makes the character dash, and then I started working on gameplay cue notify static I wasn’t able to get it to work even though I had everything setup correctly but then after looking here I discovered the gameplay cue editor I opened it up and saw that my tag was not assigned to a blueprint I created a blueprint child from my c++ class and looked again and saw that the editor picked up the child blueprint after creating the blueprint I just called the parent handle on it and everything worked

so basically you just need to create a child blueprint of you class and make sure that the editor picked up on it and then call the parent handler,

so I hope this is helpful to anyone looking for answers