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unreal-networking

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Unreal Engine networking skill for replication, RPCs, relevancy, and dedicated server architecture.

QUICK START

How to use this skill

Bring this guide into your coding agent with a prompt tailored to the tool you use.

  1. Open your project in Codex.
  2. Copy the prompt below and paste it into your agent.
  3. Review the proposed files and risks before you approve installation.
Prompt to paste
I want to install this Agent Skill for this project in Codex.

Source SKILL.md: https://github.com/a5c-ai/babysitter/blob/HEAD/library/specializations/game-development/skills/unreal-networking/SKILL.md

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First, summarize what it does, its dependencies, license status if identifiable, and any risks. Show the exact files you propose to add under .agents/skills/unreal-networking/. Do not write files or run scripts until I approve.

After I approve, install the complete skill folder, including required referenced files, into that project location. Verify it is discoverable, then tell me its actual invocation name and how to use it. Do not claim it is installed until you have verified it.

Copying this prompt does not install or run the skill. Review third-party files before use. Codex skill guide

Unreal Networking Skill

Multiplayer networking for Unreal Engine.

Overview

This skill provides capabilities for implementing multiplayer games using Unreal's built-in networking system.

Capabilities

Replication

  • Configure replicated properties
  • Handle replication conditions
  • Manage replication priorities
  • Implement custom replication

Remote Procedure Calls

  • Implement Server RPCs
  • Create Client RPCs
  • Handle Multicast RPCs
  • Manage RPC reliability

Authority and Relevancy

  • Handle server authority
  • Configure network relevancy
  • Manage actor ownership
  • Implement client prediction

Dedicated Servers

  • Build dedicated server targets
  • Handle headless mode
  • Manage server performance
  • Implement session management

Prerequisites

  • Unreal Engine 5.0+
  • Network knowledge

Usage Patterns

Replicated Property

UPROPERTY(ReplicatedUsing=OnRep_Health)
float Health;

UFUNCTION()
void OnRep_Health()
{
    // Called on clients when Health changes
    UpdateHealthUI();
}

void GetLifetimeReplicatedProps(TArray<FLifetimeProperty>& OutLifetimeProps) const
{
    DOREPLIFETIME(AMyCharacter, Health);
}

RPC Implementation

UFUNCTION(Server, Reliable, WithValidation)
void Server_Fire(FVector Location, FRotator Rotation);

bool Server_Fire_Validate(FVector Location, FRotator Rotation)
{
    return true; // Add validation
}

void Server_Fire_Implementation(FVector Location, FRotator Rotation)
{
    // Execute on server
}

Best Practices

  1. Validate all server RPCs
  2. Minimize replicated properties
  3. Use relevancy wisely
  4. Test with simulated lag
  5. Profile network bandwidth

References