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// Copyright 2025 https://yuewu.dev/en All Rights Reserved.
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#include "GCS_CombatSystemComponent.h"
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#include "AbilitySystemBlueprintLibrary.h"
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#include "TimerManager.h"
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#include "GCS_LogChannels.h"
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#include "Engine/World.h"
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#include "GameFramework/Controller.h"
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#include "Components/SkeletalMeshComponent.h"
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#include "CombatFlow/GCS_AttackRequest.h"
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#include "CombatFlow/GCS_CombatFlow.h"
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#include "GameFramework/GameStateBase.h"
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#include "Net/UnrealNetwork.h"
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#include "Animation/AnimMontage.h"
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#include "Animation/AnimInstance.h"
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#include "Utility/GCS_CombatFunctionLibrary.h"
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UGCS_CombatSystemComponent::UGCS_CombatSystemComponent() : AttackResultContainer(this, 10)
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{
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SetIsReplicatedByDefault(true);
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bWantsInitializeComponent = true;
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bReplicateUsingRegisteredSubObjectList = true;
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}
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void UGCS_CombatSystemComponent::InitializeComponent()
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{
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AttackResultContainer.SetOwningCombatSystem(this);
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Super::InitializeComponent();
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}
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void UGCS_CombatSystemComponent::BeginPlay()
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{
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if (GetWorld()->IsGameWorld())
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{
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if (GetOwner()->HasAuthority() && CombatFlowClass)
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{
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UGCS_CombatFlow* LocalNewProperty = NewObject<UGCS_CombatFlow>(GetOwner(), CombatFlowClass);
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LocalNewProperty->Initialize(GetOwner());
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CombatFlow = LocalNewProperty;
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AddReplicatedSubObject(CombatFlow);
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}
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UGGA_AbilitySystemGlobals::RegisterEventReceiver(this);
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}
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Super::BeginPlay();
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}
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void UGCS_CombatSystemComponent::EndPlay(const EEndPlayReason::Type EndPlayReason)
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{
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Super::EndPlay(EndPlayReason);
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UGGA_AbilitySystemGlobals::UnregisterEventReceiver(this);
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if (GetOwner() && GetOwner()->HasAuthority())
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{
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if (CombatFlow)
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{
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RemoveReplicatedSubObject(CombatFlow);
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}
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}
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}
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void UGCS_CombatSystemComponent::GetLifetimeReplicatedProps(TArray<FLifetimeProperty>& OutLifetimeProps) const
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{
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Super::GetLifetimeReplicatedProps(OutLifetimeProps);
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DOREPLIFETIME(ThisClass, CombatFlow);
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DOREPLIFETIME(ThisClass, AttackResultContainer);
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DOREPLIFETIME(ThisClass, ReplicatedMontageInfo);
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FDoRepLifetimeParams Parameters;
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Parameters.bIsPushBased = true;
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Parameters.Condition = COND_SkipOwner;
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DOREPLIFETIME_WITH_PARAMS_FAST(ThisClass, ComboStep, Parameters)
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}
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UGCS_CombatSystemComponent* UGCS_CombatSystemComponent::GetCombatSystemComponent(const AActor* Actor)
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{
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return Actor ? Actor->FindComponentByClass<UGCS_CombatSystemComponent>() : nullptr;
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}
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bool UGCS_CombatSystemComponent::FindCombatSystemComponent(const AActor* Actor, UGCS_CombatSystemComponent*& CombatComponent)
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{
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CombatComponent = Actor ? Actor->FindComponentByClass<UGCS_CombatSystemComponent>() : nullptr;
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return IsValid(CombatComponent);
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}
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bool UGCS_CombatSystemComponent::FindTypedCombatSystemComponent(AActor* Actor, TSubclassOf<UGCS_CombatSystemComponent> DesiredClass, UGCS_CombatSystemComponent*& Component)
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{
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if (UGCS_CombatSystemComponent* Instance = GetCombatSystemComponent(Actor))
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{
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if (Instance->GetClass()->IsChildOf(DesiredClass))
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{
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Component = Instance;
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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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UGCS_CombatFlow* UGCS_CombatSystemComponent::GetCombatFlow() const
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{
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return CombatFlow;
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}
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void UGCS_CombatSystemComponent::RegisterAttackResult(FGCS_AttackResult& Payload)
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{
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//TODO Should make this server only?
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if (GetOwner() && GetOwner()->HasAuthority())
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{
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}
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AttackResultContainer.AddEntry(Payload);
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}
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FGCS_AttackResult UGCS_CombatSystemComponent::GetLastProcessedAttackResult() const
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{
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return LastProcessedAttackResult;
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}
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void UGCS_CombatSystemComponent::SetLastProcessedAttackResult(const FGCS_AttackResult& Payload)
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{
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LastProcessedAttackResult = Payload;
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}
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void UGCS_CombatSystemComponent::PlayPredictableMontageForTarget(UGCS_CombatSystemComponent* TargetCSC, FGCS_PlayMontageRequest Request)
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{
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if (GetOwnerRole() >= ROLE_Authority)
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{
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TargetCSC->SetReplicatedMontage(Request);
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}
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if (GetOwnerRole() == ROLE_AutonomousProxy)
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{
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TargetCSC->PlayPredictedMontage(Request);
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ServerPlayPredictableMontageForTarget(TargetCSC, Request);
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}
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}
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void UGCS_CombatSystemComponent::ServerPlayPredictableMontageForTarget_Implementation(UGCS_CombatSystemComponent* TargetCSC, FGCS_PlayMontageRequest Request)
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{
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TargetCSC->SetReplicatedMontage(Request);
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}
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void UGCS_CombatSystemComponent::SetReplicatedMontage(const FGCS_PlayMontageRequest& Request)
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{
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TimerHandle.Invalidate();
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ReplicatedMontageInfo.AnimMontage = Request.AnimMontage;
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ReplicatedMontageInfo.PlayRate = Request.PlayRate;
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ReplicatedMontageInfo.TriggeredTime = GetWorld()->GetGameState()->GetServerWorldTimeSeconds();
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ReplicatedMontageInfo.StartSectionName = Request.StartSectionName;
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GetWorld()->GetTimerManager().SetTimer(TimerHandle, [&]()
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{
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ReplicatedMontageInfo.AnimMontage = nullptr;
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TimerHandle.Invalidate();
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}, Request.AnimMontage->GetPlayLength() * Request.PlayRate, false);
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OnRep_ReplicatedMontageInfo();
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}
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//server tell me to play montage.
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void UGCS_CombatSystemComponent::OnRep_ReplicatedMontageInfo()
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{
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if (ReplicatedMontageInfo.AnimMontage == nullptr)
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{
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PredictedMontageInfo.AnimMontage = nullptr;
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return;
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}
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if (USkeletalMeshComponent* MeshComponent = GetCharacterMeshComponent())
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{
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UAnimMontage* MontageToPlay = ReplicatedMontageInfo.AnimMontage;
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float TimeDiff = GetWorld()->GetGameState()->GetServerWorldTimeSeconds() - ReplicatedMontageInfo.TriggeredTime;
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float StartTime = FMath::Clamp(TimeDiff, 0, ReplicatedMontageInfo.AnimMontage->GetPlayLength() * ReplicatedMontageInfo.PlayRate);
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//If local montage ahead of replicated montage
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if (PredictedMontageInfo.AnimMontage != nullptr)
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{
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//And it's the same.
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if (ReplicatedMontageInfo.AnimMontage == PredictedMontageInfo.AnimMontage)
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{
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PredictedMontageInfo.AnimMontage = nullptr;
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return;
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}
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PredictedMontageInfo.AnimMontage = nullptr;
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}
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MeshComponent->GetAnimInstance()->Montage_Play(MontageToPlay, ReplicatedMontageInfo.PlayRate, EMontagePlayReturnType::MontageLength, StartTime);
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}
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}
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void UGCS_CombatSystemComponent::PlayPredictedMontage(const FGCS_PlayMontageRequest& Request)
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{
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PredictedMontageInfo.AnimMontage = Request.AnimMontage;
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PredictedMontageInfo.PlayRate = Request.PlayRate;
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PredictedMontageInfo.TriggeredTime = GetWorld()->GetGameState()->GetServerWorldTimeSeconds();
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PredictedMontageInfo.StartSectionName = Request.StartSectionName;
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if (USkeletalMeshComponent* MeshComponent = GetCharacterMeshComponent())
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{
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float Duration = MeshComponent->GetAnimInstance()->Montage_Play(Request.AnimMontage, Request.PlayRate, EMontagePlayReturnType::MontageLength, Request.StartTimeSeconds);
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if (Duration > 0)
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{
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// Start at a given Section.
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if (Request.StartSectionName != NAME_None)
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{
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MeshComponent->GetAnimInstance()->Montage_JumpToSection(Request.StartSectionName, Request.AnimMontage);
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}
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}
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}
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}
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USkeletalMeshComponent* UGCS_CombatSystemComponent::GetCharacterMeshComponent() const
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{
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static FName CharacterMeshTagName = "CharacterMesh";
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return Cast<USkeletalMeshComponent>(GetOwner()->FindComponentByTag(USkeletalMeshComponent::StaticClass(), CharacterMeshTagName));
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}
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void UGCS_CombatSystemComponent::OnGlobalPreGameplayEffectSpecApply(FGameplayEffectSpec& Spec, UAbilitySystemComponent* AbilitySystemComponent)
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{
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if (IsValid(CombatFlow))
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{
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FGameplayTagContainer DynamicTags;
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CombatFlow->HandlePreGameplayEffectSpecApply(Spec, AbilitySystemComponent, DynamicTags);
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if (!DynamicTags.IsEmpty())
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{
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Spec.AppendDynamicAssetTags(DynamicTags);
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}
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}
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}
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void UGCS_CombatSystemComponent::OnRep_CombatFlow()
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{
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CombatFlow->Initialize(GetOwner());
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UE_LOG(LogGCS, Display, TEXT("Combat flow replicated for %s"), *GetOwner()->GetName());
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}
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int32 UGCS_CombatSystemComponent::GetComboStep() const
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{
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return ComboStep;
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}
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void UGCS_CombatSystemComponent::UpdateComboStep(int32 NewComboStep)
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{
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if (NewComboStep >= 0)
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{
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UpdateComboStep(NewComboStep, true);
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}
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}
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void UGCS_CombatSystemComponent::ResetComboState()
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{
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if (ComboStep != 0)
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{
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UpdateComboStep(0,true);
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}
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}
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void UGCS_CombatSystemComponent::UpdateComboStep(int32 NewComboStep, bool bSendRpc)
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{
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if (ComboStep == NewComboStep || GetOwner()->GetLocalRole() <= ROLE_SimulatedProxy || ComboStep == NewComboStep)
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{
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return;
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}
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const auto PrevComboStep{ComboStep};
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ComboStep = NewComboStep;
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MARK_PROPERTY_DIRTY_FROM_NAME(ThisClass, ComboStep, this)
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OnComboStepChanged(PrevComboStep);
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if (bSendRpc)
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{
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if (GetOwner()->GetLocalRole() >= ROLE_Authority)
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{
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ClientUpdateComboStep(ComboStep);
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}
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else
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{
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ServerUpdateComboStep(ComboStep);
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}
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}
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}
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void UGCS_CombatSystemComponent::OnReplicated_ComboStep(int32 PrevComboStep)
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{
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OnComboStepChanged(PrevComboStep);
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}
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void UGCS_CombatSystemComponent::ClientUpdateComboStep_Implementation(int32 NewComboStep)
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{
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UpdateComboStep(NewComboStep, false);
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}
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bool UGCS_CombatSystemComponent::ClientUpdateComboStep_Validate(int32 NewComboStep)
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{
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return true;
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}
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void UGCS_CombatSystemComponent::ServerUpdateComboStep_Implementation(int32 NewComboStep)
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{
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UpdateComboStep(NewComboStep, false);
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}
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bool UGCS_CombatSystemComponent::ServerUpdateComboStep_Validate(int32 NewComboStep)
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{
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return true;
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}
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void UGCS_CombatSystemComponent::OnComboStepChanged_Implementation(int32 PrevComboStep)
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{
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OnComboStepChangedEvent.Broadcast(PrevComboStep);
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}
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