Traffic simulation is struggling to simulate when there are lots of NPC's

[mozhoku]

Simulation slows down when there are lots of NPC's in the scene.

[WJaworskiRobotec]

Please specify target number of NPCs @mozhoku that we would like to support and test

[sasa42]

I really like this old ecs example for visual traffic and pedestrians.
https://github.com/maajor/OSMTrafficSim

Probably it could be useful to solve some general performance issues.
On my PC i can simulate around 50 but the framerate drops to 8fps.
The ecs example can run 10 000+ at high framerates.

Another paid Assets i tested....
https://assetstore.unity.com/packages/templates/systems/dots-traffic-city-220203

shows similar dots method.

[lchojnack]

I've started to work on this task. I'm exploring the posibility to use the ECS (Entity Component System) for traffic simulation.

[lchojnack]

The current task progress:

• Basic ECS Traffic Simulator is ready -> NPCs drive on lanelet

  • There is around 80 FPS for 1000 NPCs
    Note: The final avg FPS can be lower when more features as obstacle detection or traffic rules will be added

    video-2024-12-17-11-55-24.mp4

[lchojnack]

The current task progress:

• NPC collision avoidance in ECS Traffic Simulator initial implementation

  • NPC can stop in front of EGO, and resume to drive when EGO disapear.

    video-2025-02-19-15-32-20.mp4