World Partition + Streaming (Blueprint)

📚 World Streaming Documentation

World Partition System:

• 📖 World Partition Overview - Complete world partition system
• 📖 Level Streaming - Dynamic level loading and unloading
• 📖 Streaming Sources - Dynamic streaming control

Large World Development:

• 📖 Large Worlds - Massive world creation guidelines
• 📖 HLOD (Hierarchical LOD) - Distance-based optimization
• 📖 One File Per Actor (OFPA) - Team collaboration systems

Advanced Streaming Tutorials:

• 🎥 Open World Streaming Techniques - Advanced streaming patterns
• 🎥 Performance Optimization for Large Worlds - Large-scale performance
• 🎥 Seamless World Travel - Smooth transitions

---

🗺️ Large World Architecture

What/Why: Stream the world efficiently and script transitions without blocking gameplay.

Prereqs

• World Partition enabled; OFPA for collaborative edits

Steps

1. Streaming basics

• Use Streaming Sources on Pawns/cameras
• Tag critical cells to always loaded or use HLOD

2. Scripting transitions

• Use Level Streaming Volumes or scripted sources for doors/elevators
• Preload cells before teleport; fade UI while loading

3. Data loads

• Pair streaming with async asset loads for set pieces

Data

• DA_StreamingSetup listing critical cells/regions

Networking

• Ensure server loads regions before spawning AI/players

Performance

• Keep cell sizes reasonable; leverage HLOD; profile streaming times

Testing

• Teleport across regions; verify no major hitching and proper activation

Suggested prompts

• “Blueprint-only approach to preload a region before teleporting the player.”
• “Best practices for Streaming Sources with large maps.”
• “Checklist for hitch causes during streaming and how to mitigate.”

Prompts for this example

• “Show a door trigger that fades UI, preloads cells, teleports, then restores control.”