In this video, you’ll learn how cluster synchronization works in the MozXR framework, focusing on actor replication and cluster events in multi-PC (cluster) environments. The tutorial explains how to ensure actors move consistently across all nodes in a distributed nDisplay setup using the Display Cluster system in Unreal Engine. You’ll also explore how cluster events allow you to trigger synchronized gameplay actions—such as spawning actors—with shared parameters across all machines. By the end, you’ll understand how to build deterministic, synchronized behavior across an immersive multi-display system.

Topics Covered

• What cluster sync is and why it matters in multi-PC setups
• Actor replication in nDisplay environments
• Using the Display Cluster Scene Component as a sync root
• Building a synchronized custom actor from scratch
• Ensuring consistent movement across cluster nodes
• Introduction to cluster events and event listeners
• Sending vs receiving cluster events (primary vs all nodes)
• Spawning synchronized actors using event-driven logic
• Passing parameters (position, scale, color) across the cluster
• Implementing the Display Cluster Event Listener interface
• Using timers to trigger cluster-wide events
• Why deterministic execution is critical in multi-PC environments
• Testing synchronized behavior in nDisplay hot launch

Links

• Ars Electronica > MozXR > Github Repo
• Unreal Engine > nDisplay > Cluster Events
• Unreal Engine > nDisplay > Synced Actors
• Local Testing Tracking
• Config Editor
• Local Testing nDisplay
• Discord