Implementation of the UItemInventoryComponent

Implementation of the UItemInventoryComponent.

This includes integration to the Sample Project via 2 Inventories, one for the Mouse to pickup Items and another for the Character Inventory which stores them. Implemented various User Interface Widgets to facilitate the usage of these 2 Inventory Components.

Various other improvements across the codebase.

Config/DefaultEngine.ini

@@ -77,3 +77,41 @@ ConnectionType=USBOnly
 bUseManualIPAddress=False
 ManualIPAddress=
 
+[/Script/Engine.UserInterfaceSettings]
+RenderFocusRule=NavigationOnly
+HardwareCursors=()
+SoftwareCursors=()
+ApplicationScale=1.000000
+UIScaleRule=ShortestSide
+CustomScalingRuleClass=None
+UIScaleCurve=(EditorCurveData=(Keys=((Time=480.000000,Value=0.444000),(Time=720.000000,Value=0.666000),(Time=1080.000000,Value=1.000000),(Time=8640.000000,Value=8.000000)),DefaultValue=340282346638528859811704183484516925440.000000,PreInfinityExtrap=RCCE_Constant,PostInfinityExtrap=RCCE_Constant),ExternalCurve=None)
+bAllowHighDPIInGameMode=False
+DesignScreenSize=(X=1920,Y=1080)
+bLoadWidgetsOnDedicatedServer=True
+bAuthorizeAutomaticWidgetVariableCreation=True
+CustomFontDPI=96
+FontDPIPreset=Unreal
+bUseCustomFontDPI=False
+
+[/Script/NavigationSystem.NavigationSystemV1]
+DefaultAgentName=Default
+CrowdManagerClass=/Script/AIModule.CrowdManager
+bAutoCreateNavigationData=True
+bSpawnNavDataInNavBoundsLevel=False
+bAllowClientSideNavigation=False
+bShouldDiscardSubLevelNavData=True
+bTickWhilePaused=False
+bInitialBuildingLocked=False
+bSkipAgentHeightCheckWhenPickingNavData=False
+GeometryExportTriangleCountWarningThreshold=200000
+bGenerateNavigationOnlyAroundNavigationInvokers=False
+ActiveTilesUpdateInterval=1.000000
+DataGatheringMode=Instant
+DirtyAreaWarningSizeThreshold=-1.000000
+GatheringNavModifiersWarningLimitTime=-1.000000
++SupportedAgents=(Name="Default",Color=(B=0,G=75,R=38,A=164),DefaultQueryExtent=(X=50.000000,Y=50.000000,Z=250.000000),NavDataClass="/Script/NavigationSystem.RecastNavMesh",AgentRadius=42.000000,AgentHeight=96.000000,AgentStepHeight=-1.000000,NavWalkingSearchHeightScale=0.500000,PreferredNavData="/Script/NavigationSystem.RecastNavMesh",bCanCrouch=False,bCanJump=True,bCanWalk=True,bCanSwim=True,bCanFly=False)
+SupportedAgentsMask=(bSupportsAgent0=True,bSupportsAgent1=True,bSupportsAgent2=True,bSupportsAgent3=True,bSupportsAgent4=True,bSupportsAgent5=True,bSupportsAgent6=True,bSupportsAgent7=True,bSupportsAgent8=True,bSupportsAgent9=True,bSupportsAgent10=True,bSupportsAgent11=True,bSupportsAgent12=True,bSupportsAgent13=True,bSupportsAgent14=True,bSupportsAgent15=True)
+
+[/Script/NavigationSystem.RecastNavMesh]
+RuntimeGeneration=Dynamic
+

Plugins/GenericItemization/Source/GenericItemization/GenericItemization.Build.cs

@@ -24,6 +24,7 @@ public GenericItemization(ReadOnlyTargetRules Target) : base(Target)
             "Core",
 			"StructUtils",
 			"GameplayTags",
+            "NetCore",
         });
 
         PrivateDependencyModuleNames.AddRange(

Plugins/GenericItemization/Source/GenericItemization/Private/GenericItemizationInstanceTypes.cpp

@@ -1,4 +1,13 @@
 #include "GenericItemizationInstanceTypes.h"
+#include "ItemManagement/ItemInventoryComponent.h"
+
+FItemInstance::FItemInstance()
+{
+	ItemId = FGuid::NewGuid();
+	ItemSeed = -1;
+	ItemLevel = -1;
+	AffixLevel = -1;
+}
 
 bool FItemInstance::HasAnyAffixOfType(const FGameplayTag& AffixType) const
 {
@@ -15,3 +24,113 @@ bool FItemInstance::HasAnyAffixOfType(const FGameplayTag& AffixType) const
 
 	return false;
 }
+
+bool FItemInstance::IsValid() const
+{
+	return ItemSeed != -1;
+}
+
+void FFastItemInstancesContainer::PostReplicatedAdd(const TArrayView<int32>& AddedIndices, int32 FinalSize)
+{
+	for (const int32& Index : AddedIndices)
+	{
+		const FFastItemInstance& FastItemInstance = ItemInstances[Index];
+		const FInstancedStruct& PostAddItemInstance = FastItemInstance.ItemInstance;
+		if (Owner)
+		{
+			Owner->OnAddedItemInstance(FastItemInstance);
+		}
+	}
+}
+
+void FFastItemInstancesContainer::PostReplicatedChange(const TArrayView<int32>& ChangedIndices, int32 FinalSize)
+{
+
+}
+
+void FFastItemInstancesContainer::PreReplicatedRemove(const TArrayView<int32>& RemovedIndices, int32 FinalSize)
+{
+	for (const int32& Index : RemovedIndices)
+	{
+		const FFastItemInstance& FastItemInstance = ItemInstances[Index];
+		const FInstancedStruct& PreRemoveItemInstance = FastItemInstance.ItemInstance;
+		if (Owner)
+		{
+			Owner->OnRemovedItemInstance(FastItemInstance);
+		}
+	}
+}
+
+void FFastItemInstancesContainer::Register(UItemInventoryComponent* InOwner)
+{
+	if (Owner != InOwner && InOwner != nullptr)
+	{
+		Owner = InOwner;
+		bOwnerIsNetAuthority = Owner->HasAuthority();
+	}
+}
+
+void FFastItemInstancesContainer::AddItemInstance(const FInstancedStruct& ItemInstance, const FInstancedStruct& UserContextData)
+{
+	if (!Owner)
+	{
+		return;
+	}
+
+	FFastItemInstance FastItemInstance;
+	FastItemInstance.ItemInstance = ItemInstance;
+	FastItemInstance.UserContextData = UserContextData;
+
+	ItemInstances.Add(FastItemInstance);
+	MarkItemDirty(FastItemInstance);
+
+	Owner->OnAddedItemInstance(FastItemInstance);
+}
+
+bool FFastItemInstancesContainer::RemoveItemInstance(const FGuid& ItemInstance)
+{
+	for (int32 i = ItemInstances.Num() - 1; i >= 0; --i)
+	{
+		const FItemInstance* ItemInstancePtr = ItemInstances[i].ItemInstance.GetPtr<FItemInstance>();
+		if (ItemInstancePtr && ItemInstancePtr->IsValid() && ItemInstancePtr->ItemId == ItemInstance)
+		{
+			FFastItemInstance OldItemInstance = ItemInstances[i];
+			ItemInstances.RemoveAt(i);
+			MarkArrayDirty();
+
+			Owner->OnRemovedItemInstance(OldItemInstance);
+			return true;
+		}
+	}
+
+	return false;
+}
+
+void FFastItemInstancesContainer::GetItemInstances(TArray<FInstancedStruct>& OutItemInstances) const
+{
+	OutItemInstances.Empty(ItemInstances.Num());
+
+	for (const FFastItemInstance& ItemInstance : ItemInstances)
+	{
+		OutItemInstances.Add(ItemInstance.ItemInstance);
+	}
+}
+
+bool FFastItemInstancesContainer::GetFastItemInstance(const FGuid& ItemInstance, FFastItemInstance& OutFastItemInstance) const
+{
+	for (const FFastItemInstance& FastItemInstance : ItemInstances)
+	{
+		if (FastItemInstance.ItemInstance.IsValid() && FastItemInstance.ItemInstance.GetPtr<FItemInstance>() && FastItemInstance.ItemInstance.GetPtr<FItemInstance>()->ItemId == ItemInstance)
+		{
+			OutFastItemInstance = FastItemInstance;
+			return true;
+		}
+	}
+
+	return false;
+}
+
+int32 FFastItemInstancesContainer::GetNum() const
+{
+	return ItemInstances.Num();
+}

Plugins/GenericItemization/Source/GenericItemization/Private/ItemManagement/ItemDrop.cpp

@@ -43,3 +43,13 @@ void AItemDrop::GetItemDefinitionStruct(FItemDefinition& OutItemDefinitionStruct
 		OutItemDefinitionStruct = ItemInstance.Get().ItemDefinition.Get();
 	}
 }
+
+bool AItemDrop::HasValidItemInstance() const
+{
+	return ItemInstance.IsValid() && ItemInstance.Get().IsValid();
+}
+
+bool AItemDrop::CanTakeItem_Implementation(UItemInventoryComponent* InventoryComponent) const
+{
+	return true;
+}

Plugins/GenericItemization/Source/GenericItemization/Private/ItemManagement/ItemDropperComponent.cpp

@@ -10,13 +10,19 @@
 UItemDropperComponent::UItemDropperComponent()
 {
 	PrimaryComponentTick.bCanEverTick = false;
+	PrimaryComponentTick.bStartWithTickEnabled = false;
 
 	ItemDropClass = AItemDrop::StaticClass();
 	ContextProviderFunction = UItemInstancingContextFunction::StaticClass();
 }
 
 bool UItemDropperComponent::DropItems_Implementation(FInstancedStruct UserContextData, TArray<AItemDrop*>& ItemDrops)
 {
+	if (!IsValid(GetOwner()) || !GetOwner()->HasAuthority())
+	{
+		return false;
+	}
+
 	if (!IsValid(ItemDropClass) || !IsValid(ContextProviderFunction))
 	{
 		return false;