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// Copyright 2025 https://yuewu.dev/en All Rights Reserved.
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#include "Phases/GGA_GamePhaseAbility.h"
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#include "AbilitySystemComponent.h"
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#include "Phases/GGA_GamePhaseSubsystem.h"
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#include "Engine/World.h"
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#if WITH_EDITOR
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#include "Misc/DataValidation.h"
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#endif
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#include UE_INLINE_GENERATED_CPP_BY_NAME(GGA_GamePhaseAbility)
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#define LOCTEXT_NAMESPACE "UGGA_GamePhaseAbility"
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UGGA_GamePhaseAbility::UGGA_GamePhaseAbility(const FObjectInitializer& ObjectInitializer)
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: Super(ObjectInitializer)
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{
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ReplicationPolicy = EGameplayAbilityReplicationPolicy::ReplicateNo;
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InstancingPolicy = EGameplayAbilityInstancingPolicy::InstancedPerActor;
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NetExecutionPolicy = EGameplayAbilityNetExecutionPolicy::ServerInitiated;
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NetSecurityPolicy = EGameplayAbilityNetSecurityPolicy::ServerOnly;
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}
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void UGGA_GamePhaseAbility::ActivateAbility(const FGameplayAbilitySpecHandle Handle, const FGameplayAbilityActorInfo* ActorInfo, const FGameplayAbilityActivationInfo ActivationInfo,
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const FGameplayEventData* TriggerEventData)
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{
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if (ActorInfo->IsNetAuthority())
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{
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UWorld* World = ActorInfo->AbilitySystemComponent->GetWorld();
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UGGA_GamePhaseSubsystem* PhaseSubsystem = UWorld::GetSubsystem<UGGA_GamePhaseSubsystem>(World);
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PhaseSubsystem->OnBeginPhase(this, Handle);
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}
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Super::ActivateAbility(Handle, ActorInfo, ActivationInfo, TriggerEventData);
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}
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void UGGA_GamePhaseAbility::EndAbility(const FGameplayAbilitySpecHandle Handle, const FGameplayAbilityActorInfo* ActorInfo, const FGameplayAbilityActivationInfo ActivationInfo,
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bool bReplicateEndAbility, bool bWasCancelled)
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{
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if (ActorInfo->IsNetAuthority())
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{
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UWorld* World = ActorInfo->AbilitySystemComponent->GetWorld();
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UGGA_GamePhaseSubsystem* PhaseSubsystem = UWorld::GetSubsystem<UGGA_GamePhaseSubsystem>(World);
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PhaseSubsystem->OnEndPhase(this, Handle);
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}
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Super::EndAbility(Handle, ActorInfo, ActivationInfo, bReplicateEndAbility, bWasCancelled);
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}
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#if WITH_EDITOR
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#if ENGINE_MINOR_VERSION > 2
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EDataValidationResult UGGA_GamePhaseAbility::IsDataValid(FDataValidationContext& Context) const
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{
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EDataValidationResult Result = CombineDataValidationResults(Super::IsDataValid(Context), EDataValidationResult::Valid);
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if (!GamePhaseTag.IsValid())
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{
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Result = EDataValidationResult::Invalid;
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Context.AddError(LOCTEXT("GamePhaseTagNotSet", "GamePhaseTag must be set to a tag representing the current phase."));
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}
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return Result;
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}
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#endif
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#endif
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#undef LOCTEXT_NAMESPACE
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@@ -0,0 +1,6 @@
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// Copyright 2025 https://yuewu.dev/en All Rights Reserved.
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#include "Phases/GGA_GamePhaseLog.h"
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DEFINE_LOG_CATEGORY(LogGGA_GamePhase)
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// Copyright 2025 https://yuewu.dev/en All Rights Reserved.
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#include "Phases/GGA_GamePhaseSubsystem.h"
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#include "Phases/GGA_GamePhaseAbility.h"
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#include "GameplayTagsManager.h"
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#include "GameFramework/GameState.h"
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#include "Engine/World.h"
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#include "AbilitySystemComponent.h"
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#include "Abilities/GGA_GameplayAbility.h"
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#include "GGA_AbilitySystemComponent.h"
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#include "Phases/GGA_GamePhaseLog.h"
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//////////////////////////////////////////////////////////////////////
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// UGGA_GamePhaseSubsystem
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UGGA_GamePhaseSubsystem::UGGA_GamePhaseSubsystem()
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{
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}
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bool UGGA_GamePhaseSubsystem::ShouldCreateSubsystem(UObject* Outer) const
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{
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if (Super::ShouldCreateSubsystem(Outer))
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{
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//UWorld* World = Cast<UWorld>(Outer);
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//check(World);
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//return World->GetAuthGameMode() != nullptr;
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//return nullptr;
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return true;
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}
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return false;
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}
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bool UGGA_GamePhaseSubsystem::DoesSupportWorldType(const EWorldType::Type WorldType) const
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{
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return WorldType == EWorldType::Game || WorldType == EWorldType::PIE;
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}
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void UGGA_GamePhaseSubsystem::StartPhase(TSubclassOf<UGGA_GamePhaseAbility> PhaseAbility, FGGamePhaseDelegate PhaseEndedCallback)
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{
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UWorld* World = GetWorld();
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UAbilitySystemComponent* GameState_ASC = World->GetGameState()->FindComponentByClass<UAbilitySystemComponent>();
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if (ensure(GameState_ASC))
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{
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FGameplayAbilitySpec PhaseSpec(PhaseAbility, 1, 0, this);
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FGameplayAbilitySpecHandle SpecHandle = GameState_ASC->GiveAbilityAndActivateOnce(PhaseSpec);
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FGameplayAbilitySpec* FoundSpec = GameState_ASC->FindAbilitySpecFromHandle(SpecHandle);
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if (FoundSpec && FoundSpec->IsActive())
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{
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FGGamePhaseEntry& Entry = ActivePhaseMap.FindOrAdd(SpecHandle);
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Entry.PhaseEndedCallback = PhaseEndedCallback;
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}
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else
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{
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PhaseEndedCallback.ExecuteIfBound(nullptr);
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}
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}
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}
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void UGGA_GamePhaseSubsystem::K2_StartPhase(TSubclassOf<UGGA_GamePhaseAbility> PhaseAbility, const FGGamePhaseDynamicDelegate& PhaseEndedDelegate)
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{
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const FGGamePhaseDelegate EndedDelegate = FGGamePhaseDelegate::CreateWeakLambda(const_cast<UObject*>(PhaseEndedDelegate.GetUObject()), [PhaseEndedDelegate](const UGGA_GamePhaseAbility* PhaseAbility)
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{
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PhaseEndedDelegate.ExecuteIfBound(PhaseAbility);
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});
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StartPhase(PhaseAbility, EndedDelegate);
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}
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void UGGA_GamePhaseSubsystem::K2_WhenPhaseStartsOrIsActive(FGameplayTag PhaseTag, EGGA_PhaseTagMatchType MatchType, FGGamePhaseTagDynamicDelegate WhenPhaseActive)
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{
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const FGGamePhaseTagDelegate ActiveDelegate = FGGamePhaseTagDelegate::CreateWeakLambda(WhenPhaseActive.GetUObject(), [WhenPhaseActive](const FGameplayTag& PhaseTag)
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{
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WhenPhaseActive.ExecuteIfBound(PhaseTag);
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});
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WhenPhaseStartsOrIsActive(PhaseTag, MatchType, ActiveDelegate);
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}
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void UGGA_GamePhaseSubsystem::K2_WhenPhaseEnds(FGameplayTag PhaseTag, EGGA_PhaseTagMatchType MatchType, FGGamePhaseTagDynamicDelegate WhenPhaseEnd)
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{
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const FGGamePhaseTagDelegate EndedDelegate = FGGamePhaseTagDelegate::CreateWeakLambda(WhenPhaseEnd.GetUObject(), [WhenPhaseEnd](const FGameplayTag& PhaseTag)
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{
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WhenPhaseEnd.ExecuteIfBound(PhaseTag);
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});
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WhenPhaseEnds(PhaseTag, MatchType, EndedDelegate);
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}
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void UGGA_GamePhaseSubsystem::WhenPhaseStartsOrIsActive(FGameplayTag PhaseTag, EGGA_PhaseTagMatchType MatchType, const FGGamePhaseTagDelegate& WhenPhaseActive)
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{
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FGPhaseObserver Observer;
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Observer.PhaseTag = PhaseTag;
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Observer.MatchType = MatchType;
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Observer.PhaseCallback = WhenPhaseActive;
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PhaseStartObservers.Add(Observer);
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if (IsPhaseActive(PhaseTag))
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{
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WhenPhaseActive.ExecuteIfBound(PhaseTag);
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}
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}
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void UGGA_GamePhaseSubsystem::WhenPhaseEnds(FGameplayTag PhaseTag, EGGA_PhaseTagMatchType MatchType, const FGGamePhaseTagDelegate& WhenPhaseEnd)
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{
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FGPhaseObserver Observer;
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Observer.PhaseTag = PhaseTag;
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Observer.MatchType = MatchType;
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Observer.PhaseCallback = WhenPhaseEnd;
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PhaseEndObservers.Add(Observer);
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}
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bool UGGA_GamePhaseSubsystem::IsPhaseActive(const FGameplayTag& PhaseTag) const
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{
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for (const auto& KVP : ActivePhaseMap)
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{
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const FGGamePhaseEntry& PhaseEntry = KVP.Value;
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if (PhaseEntry.PhaseTag.MatchesTag(PhaseTag))
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{
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return true;
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}
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}
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return false;
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}
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void UGGA_GamePhaseSubsystem::OnBeginPhase(const UGGA_GamePhaseAbility* PhaseAbility, const FGameplayAbilitySpecHandle PhaseAbilityHandle)
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{
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const FGameplayTag IncomingPhaseTag = PhaseAbility->GetGamePhaseTag();
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const FGameplayTag IncomingPhaseParentTag = UGameplayTagsManager::Get().RequestGameplayTagDirectParent(IncomingPhaseTag);
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UE_LOG(LogGGA_GamePhase, Log, TEXT("Beginning Phase '%s' (%s)"), *IncomingPhaseTag.ToString(), *GetNameSafe(PhaseAbility));
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const UWorld* World = GetWorld();
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UGGA_AbilitySystemComponent* GameState_ASC = World->GetGameState()->FindComponentByClass<UGGA_AbilitySystemComponent>();
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if (ensure(GameState_ASC))
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{
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TArray<FGameplayAbilitySpec*> ActivePhases;
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for (const auto& KVP : ActivePhaseMap)
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{
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const FGameplayAbilitySpecHandle ActiveAbilityHandle = KVP.Key;
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if (FGameplayAbilitySpec* Spec = GameState_ASC->FindAbilitySpecFromHandle(ActiveAbilityHandle))
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{
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ActivePhases.Add(Spec);
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}
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}
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for (const FGameplayAbilitySpec* ActivePhase : ActivePhases)
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{
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const UGGA_GamePhaseAbility* ActivePhaseAbility = CastChecked<UGGA_GamePhaseAbility>(ActivePhase->Ability);
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const FGameplayTag ActivePhaseTag = ActivePhaseAbility->GetGamePhaseTag();
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// So if the active phase currently matches the incoming phase tag, we allow it.
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// i.e. multiple gameplay abilities can all be associated with the same phase tag.
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// For example,
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// You can be in the, Game.Playing, phase, and then start a sub-phase, like Game.Playing.SuddenDeath
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// Game.Playing phase will still be active, and if someone were to push another one, like,
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// Game.Playing.ActualSuddenDeath, it would end Game.Playing.SuddenDeath phase, but Game.Playing would
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// continue. Similarly if we activated Game.GameOver, all the Game.Playing* phases would end.
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if (!ActivePhaseTag.MatchesTag(IncomingPhaseTag) && ActivePhaseTag.MatchesTag(IncomingPhaseParentTag))
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{
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UE_LOG(LogGGA_GamePhase, Log, TEXT("\tEnding Phase '%s' (%s)"), *ActivePhaseTag.ToString(), *GetNameSafe(ActivePhaseAbility));
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FGameplayAbilitySpecHandle HandleToEnd = ActivePhase->Handle;
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GameState_ASC->CancelAbilitiesByFunc([HandleToEnd](const UGameplayAbility* AbilityToCancel, FGameplayAbilitySpecHandle Handle)
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{
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return Handle == HandleToEnd;
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}, true);
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}
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}
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FGGamePhaseEntry& Entry = ActivePhaseMap.FindOrAdd(PhaseAbilityHandle);
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Entry.PhaseTag = IncomingPhaseTag;
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// Notify all observers of this phase that it has started.
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for (int32 i = 0; i < PhaseStartObservers.Num(); i++)
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{
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if (PhaseStartObservers[i].IsMatch(IncomingPhaseTag))
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{
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PhaseStartObservers[i].PhaseCallback.ExecuteIfBound(IncomingPhaseTag);
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}
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}
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}
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}
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void UGGA_GamePhaseSubsystem::OnEndPhase(const UGGA_GamePhaseAbility* PhaseAbility, const FGameplayAbilitySpecHandle PhaseAbilityHandle)
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{
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const FGameplayTag EndedPhaseTag = PhaseAbility->GetGamePhaseTag();
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UE_LOG(LogGGA_GamePhase, Log, TEXT("Ended Phase '%s' (%s)"), *EndedPhaseTag.ToString(), *GetNameSafe(PhaseAbility));
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const FGGamePhaseEntry& Entry = ActivePhaseMap.FindChecked(PhaseAbilityHandle);
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Entry.PhaseEndedCallback.ExecuteIfBound(PhaseAbility);
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ActivePhaseMap.Remove(PhaseAbilityHandle);
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// Notify all observers of this phase that it has ended.
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for (int32 i = 0; i < PhaseEndObservers.Num(); i++)
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{
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if (PhaseEndObservers[i].IsMatch(EndedPhaseTag))
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{
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PhaseEndObservers[i].PhaseCallback.ExecuteIfBound(EndedPhaseTag);
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}
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}
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}
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bool UGGA_GamePhaseSubsystem::FGPhaseObserver::IsMatch(const FGameplayTag& ComparePhaseTag) const
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{
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switch (MatchType)
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{
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case EGGA_PhaseTagMatchType::ExactMatch:
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return ComparePhaseTag == PhaseTag;
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case EGGA_PhaseTagMatchType::PartialMatch:
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return ComparePhaseTag.MatchesTag(PhaseTag);
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}
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return false;
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}
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