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The change in tree cost is an invalid value, strongly implying the tree bounds have been corrupted by infinites or NaNs.
See original GitHub issueI create 1000 SponsorCharacterAI in CharacterDemo, after a little minutes it will cause exception below:
System.InvalidOperationException:“The change in tree cost is an invalid value, strongly implying the tree bounds have been corrupted by infinites or NaNs. If this happened in the broad phase's use of the tree, it's likely that there are invalid poses or velocities in the simulation, possibly as a result of bugged input state or constraint configuration. Try running the library with debug asserts enabled to narrow down where the NaNsplosion started.”
> BepuPhysics.dll!BepuPhysics.Trees.Tree.GetRefineTuning(int frameIndex, int refinementCandidatesCount, float refineAggressivenessScale, float costChange, out int targetRefinementCount, out int refinementPeriod, out int refinementOffset) 行 165 C#
BepuPhysics.dll!BepuPhysics.Trees.Tree.RefitAndRefineMultithreadedContext.CreateRefinementJobs(BepuUtilities.Memory.BufferPool pool, int frameIndex, float refineAggressivenessScale) 行 95 C#
BepuPhysics.dll!BepuPhysics.CollisionDetection.BroadPhase.Update(BepuUtilities.IThreadDispatcher threadDispatcher) 行 204 C#
BepuPhysics.dll!BepuPhysics.Simulation.CollisionDetection(float dt, BepuUtilities.IThreadDispatcher threadDispatcher) 行 225 C#
BepuPhysics.dll!BepuPhysics.DefaultTimestepper.Timestep(BepuPhysics.Simulation simulation, float dt, BepuUtilities.IThreadDispatcher threadDispatcher) 行 41 C#
Demos.dll!Demos.Demos.Characters.CharacterDemo.Update(DemoUtilities.Window window, DemoRenderer.Camera camera, DemoUtilities.Input input, float dt) 未知
Demos.dll!Demos.DemoHarness.Update(float dt) 未知
Demos.dll!Demos.GameLoop.Update(float dt) 未知
DemoUtilities.dll!DemoUtilities.Window.Run(System.Action<float> updateHandler, System.Action<BepuUtilities.Int2> onResize) 未知
Demos.dll!Demos.Program.Main() 未知
Issue Analytics
- State:
- Created 6 months ago
- Comments:7 (7 by maintainers)
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The change in tree cost is an invalid value, strongly implying the tree bounds have been corrupted by infinites or NaNs.
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The sponsors AI also relied on the newts being around to provide nonzero movement influence; if they reach the final target, there will be a divide by zero. Went ahead and guarded against it in 22dac469c92e5ffbeb3764feedb9eb90326361ac.
Thanks reply. I have tested for a long time and not exception, it look work well.