第一次提交

2026-03-03 01:23:02 +08:00
commit 3e434877e8
1053 changed files with 102411 additions and 0 deletions
--- a/Plugins/GIS/Source/GenericInventorySystem/Private/Drops/GIS_ItemDropperComponent.cpp
+++ b/Plugins/GIS/Source/GenericInventorySystem/Private/Drops/GIS_ItemDropperComponent.cpp
@@ -0,0 +1,108 @@
+// Copyright 2025 https://yuewu.dev/en  All Rights Reserved.
+
+
+#include "Drops/GIS_ItemDropperComponent.h"
+#include "GIS_InventoryTags.h"
+#include "GameFramework/Actor.h"
+#include "GIS_InventorySystemComponent.h"
+#include "GIS_ItemCollection.h"
+#include "GIS_LogChannels.h"
+#include "Pickups/GIS_InventoryPickupComponent.h"
+#include "Pickups/GIS_ItemPickupComponent.h"
+#include "Pickups/GIS_WorldItemComponent.h"
+
+#include UE_INLINE_GENERATED_CPP_BY_NAME(GIS_ItemDropperComponent)
+
+void UGIS_ItemDropperComponent::Drop()
+{
+	TArray<FGIS_ItemInfo> ItemsToDrop = GetItemsToDrop();
+	DropItemsInternal(ItemsToDrop);
+}
+
+void UGIS_ItemDropperComponent::BeginPlay()
+{
+	if (!CollectionTag.IsValid())
+	{
+		CollectionTag = GIS_CollectionTags::Main;
+	}
+
+	Super::BeginPlay();
+}
+
+TArray<FGIS_ItemInfo> UGIS_ItemDropperComponent::GetItemsToDrop() const
+{
+	return GetItemsToDropInternal();
+}
+
+TArray<FGIS_ItemInfo> UGIS_ItemDropperComponent::GetItemsToDropInternal() const
+{
+	TArray<FGIS_ItemInfo> Items;
+
+	UGIS_InventorySystemComponent* Inventory = UGIS_InventorySystemComponent::FindInventorySystemComponent(GetOwner());
+	if (Inventory == nullptr)
+	{
+		GIS_CLOG(Error, "requires inventory system component to drop items.")
+		return Items;
+	}
+	UGIS_ItemCollection* Collection = Inventory->GetCollectionByTag(CollectionTag);
+	if (Collection == nullptr)
+	{
+		GIS_CLOG(Error, " inventory missing collection with tag:%s'", *CollectionTag.ToString())
+		return Items;
+	}
+
+	Items = Collection->GetAllItemInfos();
+	return Items;
+}
+
+void UGIS_ItemDropperComponent::DropItemsInternal(const TArray<FGIS_ItemInfo>& ItemInfos)
+{
+	if (bDropAsInventory)
+	{
+		DropInventoryPickup(ItemInfos);
+	}
+	else
+	{
+		for (int32 i = 0; i < ItemInfos.Num(); i++)
+		{
+			DropItemPickup(ItemInfos[i]);
+		}
+	}
+}
+
+void UGIS_ItemDropperComponent::DropInventoryPickup(const TArray<FGIS_ItemInfo>& ItemInfos)
+{
+	if (AActor* PickupActor = CreatePickupActorInstance())
+	{
+		UGIS_InventorySystemComponent* Inventory = PickupActor->FindComponentByClass<UGIS_InventorySystemComponent>();
+		UGIS_InventoryPickupComponent* Pickup = PickupActor->FindComponentByClass<UGIS_InventoryPickupComponent>();
+		if (Inventory == nullptr || Pickup == nullptr)
+		{
+			GIS_CLOG(Error, "Spawned pickup(%s) missing either inventory component or inventory pickup component.", *PickupActor->GetName());
+			return;
+		}
+
+		UGIS_ItemCollection* Collection = Inventory->GetDefaultCollection();
+		if (Collection == nullptr)
+		{
+			GIS_CLOG(Error, "Spawned pickup(%s)'s inventory doesn't have default collection.", *PickupActor->GetName());
+			return;
+		}
+		Collection->RemoveAll();
+		Collection->AddItems(ItemInfos);
+	}
+}
+
+void UGIS_ItemDropperComponent::DropItemPickup(const FGIS_ItemInfo& ItemInfo)
+{
+	if (AActor* Pickup = CreatePickupActorInstance())
+	{
+		UGIS_ItemPickupComponent* ItemPickup = Pickup->FindComponentByClass<UGIS_ItemPickupComponent>();
+		UGIS_WorldItemComponent* WorldItem = Pickup->FindComponentByClass<UGIS_WorldItemComponent>();
+		if (ItemPickup == nullptr || WorldItem == nullptr)
+		{
+			GIS_CLOG(Error, "Spawned pickup(%s) missing either ItemPickup component or WorldItem component.", *Pickup->GetName());
+		}
+		WorldItem->SetItemInfo(ItemInfo.Item, ItemInfo.Amount);
+	}
+}