TrafficTest - Mass Traffic Plugin for UE 5.3.2 5.4 5.5

I've only forked this repo so I can do some proper research into a non-trivial Mass system using the latest 5.5 release, so please don't expect any maintenance! There probably won't be any!

If you can use it, great; if it doesn't work, feel free to fix it :) All credit to the original author and their repo here: https://github.com/Myxcil/MassTraffic-Test

Main 'TODO' at the moment is work out how the traffic lights were originally placed, because the code as-is doesn't appear to be doing what's in the screenshot below.

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Traffic Plugin extracted from CitySample

• disabled Niagara compilation error
• fixed missing include for physics solver

Thanks to:

https://www.youtube.com/watch?v=RRWr_Hnn5Bg

https://www.youtube.com/watch?v=otdm3KhM6vs

Added:

• generate ParkingSpot and TrafficLight data from special actors (editor-only) in the current map
• removed RuleProcessor and therefore Houdini import for parking spaces and traffic lights
• upgraded to UE 5.4 codebase

Notes:

Minimum car configuration:

1. LODCollector
2. Traffic Vehicle Visualization
3. Traffic Vehicle Simulation
4. Assorted Fragments
   1. Mass Traffic Random Fraction Fragment
   2. Mass Traffic Vehicle Lights Fragment
   3. Mass Traffic Debug Fragment

Minimum intersection configuration

1. LODCollector
2. Traffic Intersection Simulation
3. Traffic Light Visualization
4. Assorted Fragments
   1. Transform Fragment
   2. Mass Traffic Intersection Fragment

Important

• MassTrafficSubsystem::ClearAllTrafficLanes() must be called when MassSpwaner::OnDespawningFinished event is fired