// Copyright 2025 https://yuewu.dev/en  All Rights Reserved.


#include "Mover/Zipline/GMS_ZiplineModeTransition.h"
#include "GameFramework/Actor.h"
#include "DefaultMovementSet/CharacterMoverComponent.h"
#include "Kismet/KismetSystemLibrary.h"
#include "Mover/GMS_MoverStructLibrary.h"
#include "Mover/Zipline/GMS_ZiplineInterface.h"

#include UE_INLINE_GENERATED_CPP_BY_NAME(GMS_ZiplineModeTransition)

// UGMS_ZiplineStartTransition //////////////////////////////

UGMS_ZiplineStartTransition::UGMS_ZiplineStartTransition(const FObjectInitializer& ObjectInitializer)
	: Super(ObjectInitializer)
{
}

#if ENGINE_MINOR_VERSION >=6
FTransitionEvalResult UGMS_ZiplineStartTransition::Evaluate_Implementation(const FSimulationTickParams& Params) const
#else
FTransitionEvalResult UGMS_ZiplineStartTransition::OnEvaluate(const FSimulationTickParams& Params) const
#endif
{
	FTransitionEvalResult EvalResult = FTransitionEvalResult::NoTransition;

	UCharacterMoverComponent* MoverComp = Cast<UCharacterMoverComponent>(Params.MovingComps.MoverComponent.Get());

	const FMoverSyncState& SyncState = Params.StartState.SyncState;

	if (MoverComp && MoverComp->IsAirborne() && SyncState.MovementMode != ZipliningModeName)
	{
		if (const FGMS_MoverTagInputs* AbilityInputs = Params.StartState.InputCmd.InputCollection.FindDataByType<FGMS_MoverTagInputs>())
		{
			if (ZipliningInputTag.IsValid() && AbilityInputs->Tags.HasTagExact(ZipliningInputTag))
			{
				TArray<AActor*> OverlappingActors;
				MoverComp->GetOwner()->GetOverlappingActors(OUT OverlappingActors);

				for (AActor* CandidateActor : OverlappingActors)
				{
					bool bIsZipline = UKismetSystemLibrary::DoesImplementInterface(CandidateActor, UGMS_ZiplineInterface::StaticClass());

					if (bIsZipline)
					{
						EvalResult.NextMode = ZipliningModeName;
						break;
					}
				}
			}
		}
	}

	return EvalResult;
}


// UGMS_ZiplineEndTransition //////////////////////////////

UGMS_ZiplineEndTransition::UGMS_ZiplineEndTransition(const FObjectInitializer& ObjectInitializer)
	: Super(ObjectInitializer)
{
}


#if ENGINE_MINOR_VERSION >=6
FTransitionEvalResult UGMS_ZiplineEndTransition::Evaluate_Implementation(const FSimulationTickParams& Params) const
#else
FTransitionEvalResult UGMS_ZiplineEndTransition::OnEvaluate(const FSimulationTickParams& Params) const
#endif
{
	FTransitionEvalResult EvalResult = FTransitionEvalResult::NoTransition;

	if (const FCharacterDefaultInputs* DefaultInputs = Params.StartState.InputCmd.InputCollection.FindDataByType<FCharacterDefaultInputs>())
	{
		if (DefaultInputs->bIsJumpJustPressed)
		{
			EvalResult.NextMode = AutoExitToMode;
		}
	}

	return EvalResult;
}

#if ENGINE_MINOR_VERSION >=6
void UGMS_ZiplineEndTransition::Trigger_Implementation(const FSimulationTickParams& Params)
#else
void UGMS_ZiplineEndTransition::OnTrigger(const FSimulationTickParams& Params)
#endif
{
	//TODO: create a small jump, using current directionality
}