7f7e043a88
Server-authoritative, data-driven item/inventory/interaction/carry/equipment/ world-slot/placement/crafting framework. 8 modules, compiles against UE 5.7. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
130 lines
3.4 KiB
C++
130 lines
3.4 KiB
C++
// Copyright ExByte Studios. Item Interaction Ecosystem.
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#include "WorldItemSlotComponent.h"
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#include "PickupItemActor.h"
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#include "ItemWorldLog.h"
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#include "ItemDatabaseSubsystem.h"
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#include "ItemDefinitionRow.h"
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#include "Net/UnrealNetwork.h"
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UWorldItemSlotComponent::UWorldItemSlotComponent()
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{
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PrimaryComponentTick.bCanEverTick = false;
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SetIsReplicatedByDefault(true);
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}
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void UWorldItemSlotComponent::GetLifetimeReplicatedProps(TArray<FLifetimeProperty>& OutLifetimeProps) const
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{
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Super::GetLifetimeReplicatedProps(OutLifetimeProps);
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DOREPLIFETIME(UWorldItemSlotComponent, InstalledItem);
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DOREPLIFETIME(UWorldItemSlotComponent, InstalledVisual);
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}
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bool UWorldItemSlotComponent::HasAuthority() const
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{
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return GetOwner() && GetOwner()->HasAuthority();
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}
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USceneComponent* UWorldItemSlotComponent::GetAttachTarget() const
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{
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return GetOwner() ? GetOwner()->GetRootComponent() : nullptr;
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}
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bool UWorldItemSlotComponent::CanInstall(const FItemInstanceData& Item) const
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{
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if (InstalledItem.bHasItem || !Item.IsValid())
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{
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return false;
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}
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const UItemDatabaseSubsystem* DB = UItemDatabaseSubsystem::Get(this);
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const FItemDefinitionRow* Def = DB ? DB->GetItemDefinition(Item.ItemId) : nullptr;
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if (!Def || !Def->bCanInstallIntoWorldSlot)
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{
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return false;
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}
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// The item must declare this slot as compatible.
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if (!Def->CompatibleWorldSlots.HasTag(SlotTag))
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{
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return false;
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}
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// Optional extra tag gate.
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if (!AcceptedItemTags.IsEmpty())
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{
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FGameplayTagContainer ItemTags = Def->ItemTags;
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ItemTags.AddTag(Def->ItemType);
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if (!ItemTags.HasAny(AcceptedItemTags))
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{
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return false;
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}
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}
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return true;
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}
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bool UWorldItemSlotComponent::InstallItem(const FItemInstanceData& Item, AActor* ProvidedVisual)
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{
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if (!HasAuthority() || !CanInstall(Item))
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{
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return false;
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}
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InstalledItem.bHasItem = true;
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InstalledItem.Item = Item;
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InstalledItem.Item.LocationType = EItemLocationType::Installed;
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if (ProvidedVisual)
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{
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// Reuse the carried actor as the visual.
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if (USceneComponent* Target = GetAttachTarget())
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{
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ProvidedVisual->AttachToComponent(Target, FAttachmentTransformRules::SnapToTargetIncludingScale, AttachSocketName);
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}
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if (IWorldItemProvider* Provider = Cast<IWorldItemProvider>(ProvidedVisual))
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{
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Provider->SetCarried(GetOwner(), true); // keep collision off, locked
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}
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InstalledVisual = ProvidedVisual;
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}
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else
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{
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// Spawn a fresh visual pickup and attach it.
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const FTransform Xf = GetAttachTarget() ? GetAttachTarget()->GetComponentTransform() : GetOwner()->GetActorTransform();
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if (APickupItemActor* Visual = APickupItemActor::SpawnPickupFromInstance(this, Item, Xf))
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{
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Visual->SetCarried(GetOwner(), true);
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if (USceneComponent* Target = GetAttachTarget())
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{
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Visual->AttachToComponent(Target, FAttachmentTransformRules::SnapToTargetIncludingScale, AttachSocketName);
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}
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InstalledVisual = Visual;
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}
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}
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OnSlotChanged.Broadcast();
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UE_LOG(LogItemWorld, Log, TEXT("[Interaction] installed %s into %s"), *Item.ItemId.ToString(), *SlotTag.ToString());
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return true;
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}
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bool UWorldItemSlotComponent::RemoveItem(FItemInstanceData& OutItem)
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{
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if (!HasAuthority() || !InstalledItem.bHasItem)
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{
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return false;
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}
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OutItem = InstalledItem.Item;
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if (InstalledVisual)
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{
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InstalledVisual->Destroy();
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InstalledVisual = nullptr;
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}
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InstalledItem = FWorldSlotInstalledState();
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OnSlotChanged.Broadcast();
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return true;
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}
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void UWorldItemSlotComponent::OnRep_InstalledItem()
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{
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OnSlotChanged.Broadcast();
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}
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