ChildHood/Source/ChildHood/Interaction/InteractableComponent.cpp

// ChildHood Project - 可交互物组件 实现（v1.1 Effect/Action 架构）

#include "Interaction/InteractableComponent.h"
#include "Interaction/InteractableActor.h"
#include "Interaction/PersistenceSubsystem.h"
#include "SystemDriver.h"
#include "Interaction/InteractionManager.h"
#include "ChildHood.h"

#include "Components/SphereComponent.h"
#include "Engine/World.h"
#include "Engine/GameInstance.h"
#include "GameFramework/Character.h"

// ============================================================================
// 构造函数
// ============================================================================

UInteractableComponent::UInteractableComponent()
{
	// 不需要 Tick，检测由碰撞事件驱动
	PrimaryComponentTick.bCanEverTick = false;
}

// ============================================================================
// 生命周期
// ============================================================================

void UInteractableComponent::BeginPlay()
{
	Super::BeginPlay();

	AActor* Owner = GetOwner();
	if (!Owner)
	{
		UE_LOG(LogChildHood, Warning, TEXT("InteractableComponent: 无 Owner，跳过初始化"));
		return;
	}

	// --- 创建检测球（BeginPlay 中动态创建，因为需要 Data.TriggerRadius）---
	DetectionSphere = NewObject<USphereComponent>(this, USphereComponent::StaticClass(), TEXT("DetectionSphere"));
	if (DetectionSphere)
	{
		DetectionSphere->SetupAttachment(Owner->GetRootComponent());
		DetectionSphere->RegisterComponent();
		DetectionSphere->SetSphereRadius(Data.TriggerRadius);
		DetectionSphere->SetCollisionProfileName(TEXT("OverlapAllDynamic"));
		// 关闭物理模拟，仅用于 Overlap 检测
		DetectionSphere->SetGenerateOverlapEvents(true);
		DetectionSphere->SetCanEverAffectNavigation(false);

		// 绑定碰撞事件
		DetectionSphere->OnComponentBeginOverlap.AddDynamic(this, &UInteractableComponent::OnDetectionOverlapBegin);
		DetectionSphere->OnComponentEndOverlap.AddDynamic(this, &UInteractableComponent::OnDetectionOverlapEnd);
	}
	else
	{
		UE_LOG(LogChildHood, Error, TEXT("InteractableComponent: DetectionSphere 创建失败"));
	}

	// --- 恢复跨场景持久状态 ---
	UGameInstance* GI = Owner->GetGameInstance();
	if (UPersistenceSubsystem* Persistence = GI ? GI->GetSubsystem<UPersistenceSubsystem>() : nullptr)
	{
		RestorePersistentState(Persistence);
	}

	UE_LOG(LogChildHood, Log, TEXT("InteractableComponent Init: %s (ItemId=%s, Radius=%.0f)"),
		Data.DisplayName.IsEmpty() ? TEXT("(unnamed)") : *Data.DisplayName,
		*Data.ItemId.ToString(),
		Data.TriggerRadius);
}

// ============================================================================
// 提示文本
// ============================================================================

FString UInteractableComponent::GetPromptText_Implementation() const
{
	return FString::Printf(TEXT("[E] %s %s"), *Data.InteractVerb, *Data.DisplayName);
}

// ============================================================================
// 消耗管理
// ============================================================================

void UInteractableComponent::Consume_Implementation()
{
	bIsConsumed = true;

	// 禁用检测球，不再触发 Overlap
	if (DetectionSphere)
	{
		DetectionSphere->SetCollisionEnabled(ECollisionEnabled::NoCollision);
	}

	// 写入持久层
	if (UGameInstance* GI = GetOwner() ? GetOwner()->GetGameInstance() : nullptr)
	{
		if (UPersistenceSubsystem* Persistence = GI->GetSubsystem<UPersistenceSubsystem>())
		{
			Persistence->MarkItemCollected(Data.ItemId);
		}
	}

	UE_LOG(LogChildHood, Log, TEXT("InteractableComponent 已消耗: %s"), *Data.ItemId.ToString());
}

// ============================================================================
// 位置查询
// ============================================================================

FVector UInteractableComponent::GetWorldLocation() const
{
	AActor* Owner = GetOwner();
	return Owner ? Owner->GetActorLocation() : FVector::ZeroVector;
}

// ============================================================================
// 跨场景持久状态恢复
// ============================================================================

void UInteractableComponent::RestorePersistentState(UPersistenceSubsystem* Persistence)
{
	if (!Persistence) return;

	// oneShot 物品：已消耗 → 隐藏 + 禁用检测
	if (Data.bOneShot && Persistence->IsItemCollected(Data.ItemId))
	{
		bIsConsumed = true;
		if (DetectionSphere)
		{
			DetectionSphere->SetCollisionEnabled(ECollisionEnabled::NoCollision);
		}
		if (AActor* Owner = GetOwner())
		{
			Owner->SetActorHiddenInGame(true);
		}
		UE_LOG(LogChildHood, Log, TEXT("RestorePersistentState: 已消耗物品隐藏: %s"), *Data.ItemId.ToString());
	}
}

// ============================================================================
// 碰撞回调
// ============================================================================

void UInteractableComponent::OnDetectionOverlapBegin(UPrimitiveComponent* OverlappedComponent,
	AActor* OtherActor,
	UPrimitiveComponent* OtherComp,
	int32 OtherBodyIndex,
	bool bFromSweep,
	const FHitResult& SweepResult)
{
	if (!OtherActor) return;

	// 只响应 Character（玩家）的进入
	ACharacter* Character = Cast<ACharacter>(OtherActor);
	if (!Character) return;

	// 已消耗的交互物不再注册
	if (bIsConsumed) return;

	UE_LOG(LogChildHood, Verbose, TEXT("检测到角色进入范围: %s ← %s"),
		*Data.DisplayName, *OtherActor->GetName());

	// 通过 ASystemDriver 注册到 InteractionManager
	if (ASystemDriver* Driver = ASystemDriver::Get(this))
	{
		Driver->GetInteractionManager().RegisterInteractable(this);
	}
	else
	{
		UE_LOG(LogChildHood, Warning, TEXT("InteractableComponent: ASystemDriver 不存在，无法注册 %s"), *Data.DisplayName);
	}
}

void UInteractableComponent::OnDetectionOverlapEnd(UPrimitiveComponent* OverlappedComponent,
	AActor* OtherActor,
	UPrimitiveComponent* OtherComp,
	int32 OtherBodyIndex)
{
	if (!OtherActor) return;

	ACharacter* Character = Cast<ACharacter>(OtherActor);
	if (!Character) return;

	UE_LOG(LogChildHood, Verbose, TEXT("角色离开范围: %s ← %s"),
		*Data.DisplayName, *OtherActor->GetName());

	// 通过 ASystemDriver 从 InteractionManager 注销
	if (ASystemDriver* Driver = ASystemDriver::Get(this))
	{
		Driver->GetInteractionManager().UnregisterInteractable(this);
	}
}