Introduction

v1.0
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Overview

The DeltaCraft Hub plugin provides the following key features:

  • Runtime subsystem with automatic lifecycle management
  • Thread-safe operations for async workflows
  • Configurable via Data Assets or INI files
  • Event-driven architecture using delegates
  • Built-in debug visualization tools
  • Blueprint-friendly API with full C++ access

Summary

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  1. Open the Unreal Editor and navigate to Edit > Plugins
  2. Search for the plugin name and enable it
  3. Restart the editor when prompted
  4. Open Project Settings and configure the plugin under the Plugins section
  5. Add the component to your Actor Blueprint
  6. Configure the desired properties in the Details panel
  7. Compile and test your Blueprint

Requirements

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 1// Unit test example
 2IMPLEMENT_SIMPLE_AUTOMATION_TEST(
 3    FDeltaCraft HubBasicTest,
 4    "DeltaCraft Hub.Core.BasicFunctionality",
 5    EAutomationTestFlags::ApplicationContextMask | EAutomationTestFlags::ProductFilter
 6)
 7
 8bool FDeltaCraft HubBasicTest::RunTest(const FString& Parameters)
 9{
10    UDeltaCraft HubSubsystem* Subsystem = NewObject<UDeltaCraft HubSubsystem>();
11    TestNotNull(TEXT("Subsystem should be created"), Subsystem);
12
13    Subsystem->Initialize();
14    TestTrue(TEXT("Subsystem should be initialized"), Subsystem->IsInitialized());
15
16    FMyQueryParams Params;
17    Params.Radius = 500.0f;
18    TestTrue(TEXT("Query params should be valid"), Params.IsValid());
19
20    return true;
21}

Installation

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Note: This feature is available starting from version 2.0. Older versions use a different API.

First Run

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 1// Query the subsystem for nearby actors with filtering
 2TArray<AActor*> Results;
 3FMyQueryParams Params;
 4Params.Origin = GetActorLocation();
 5Params.Radius = 1000.0f;
 6Params.MaxResults = 10;
 7Params.bIncludeHidden = false;
 8Params.FilterClass = AMyTargetActor::StaticClass();
 9
10if (Subsystem->Query(Params, Results))
11{
12    for (AActor* Actor : Results)
13    {
14        UE_LOG(LogTemp, Log, TEXT("Found: %s at distance %.1f"),
15            *Actor->GetName(),
16            FVector::Dist(Params.Origin, Actor->GetActorLocation()));
17    }
18}

Optimization

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Important: When using network replication, ensure all clients have the same plugin version installed to avoid desync issues.

Performance

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 1// Declare delegates for event-driven communication
 2DECLARE_DYNAMIC_MULTICAST_DELEGATE_OneParam(FOnStateChanged, EMyState, NewState);
 3DECLARE_DYNAMIC_MULTICAST_DELEGATE_TwoParams(FOnProgressUpdated, float, Progress, FString, Message);
 4
 5UPROPERTY(BlueprintAssignable, Category = "Events")
 6FOnStateChanged OnStateChanged;
 7
 8UPROPERTY(BlueprintAssignable, Category = "Events")
 9FOnProgressUpdated OnProgressUpdated;
10
11// Broadcasting events
12void UMyManager::UpdateState(EMyState NewState)
13{
14    CurrentState = NewState;
15    OnStateChanged.Broadcast(NewState);
16    OnProgressUpdated.Broadcast(GetProgress(), GetStatusMessage());
17}

Optimization

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  1. Create a new Data Asset of type UMyConfigAsset
  2. Set the MaxPoolSize to match your expected load
  3. Configure TickRate based on your target frame budget
  4. Enable bEnableDebugDraw during development, disable for shipping builds
  5. Set LogVerbosity to Warning or higher for production
  6. Save the asset and reference it in your component's Details panel

Memory Management

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 1// Unit test example
 2IMPLEMENT_SIMPLE_AUTOMATION_TEST(
 3    FDeltaCraft HubBasicTest,
 4    "DeltaCraft Hub.Core.BasicFunctionality",
 5    EAutomationTestFlags::ApplicationContextMask | EAutomationTestFlags::ProductFilter
 6)
 7
 8bool FDeltaCraft HubBasicTest::RunTest(const FString& Parameters)
 9{
10    UDeltaCraft HubSubsystem* Subsystem = NewObject<UDeltaCraft HubSubsystem>();
11    TestNotNull(TEXT("Subsystem should be created"), Subsystem);
12
13    Subsystem->Initialize();
14    TestTrue(TEXT("Subsystem should be initialized"), Subsystem->IsInitialized());
15
16    FMyQueryParams Params;
17    Params.Radius = 500.0f;
18    TestTrue(TEXT("Query params should be valid"), Params.IsValid());
19
20    return true;
21}

Material Setup Screenshot
Material Setup Screenshot

Sequencer Track Setup
Sequencer Track Setup

Widget Layout Designer
Widget Layout Designer

Debug Visualization Viewport
Debug Visualization Viewport

Debug Visualization Viewport
Debug Visualization Viewport