How do I move a large number of actors?

Development Programming & Scripting C++
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1

Hello.
I am writing my own implementation of a mass simulation system.
The biggest challenge I have yet faced is being able to move a large number of actors at the same time in less than 16 milliseconds.

I have made a simple test, which moves 1000 actors in every tick.

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The profiler shows that my code spends most of its time updating Static Meshes.
This is after disabling physics, collision and navigation updates.

What options do I have to be able to perform a simulation of this kind while maintaining playable framerates?

2

I found 2 things that might help.

  • Disable Generate Overlap Events
  • Disable Can Ever Affect Navigation.
2 Likes
3

I can’t edit my last comment.
But with the setup, I have in my game.
Moving ~2000 objects takes me 1.4ms.

StaticMeshComponent->SetRelativeLocation_Direct(m_lastSetPos);
StaticMeshComponent->UpdateComponentToWorld(
EUpdateTransformFlags::SkipPhysicsUpdate,
ETeleportType::None
);
1 Like