Crash with Boids containing Fight Rule #74224

New Issue

Thomas Freye · 2020-02-26T10:07:02+01:00

Thomas Freye commented

2020-02-26 10:07:02 +01:00

System Information
Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: Quadro K3100M/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 426.32

Blender Version
Broken: version: 2.82 (sub 7), branch: master, commit date: 2020-02-12 16:20, hash: 77d23b0bd7

Short description of error
When start an animation with two Objects containing a particle system with boid physics
and one of them should fight the other, blender will crash.

Exact steps for others to reproduce the error

Add -> Mesh -> Plane
Add Particle System to "Plane"
Particle Settings:

    Emission

	 Number:      3
	 Frame Start: 1
	 End:         1

       Lifetime:    2000
    Velocity
       Normal:      0 m/s
    Physics
       Physics Tape: Boids
       Boid Brain
           Delete the default Rules (Separate and Flock)
    Field Weights
           Gravity:   0

Add -> Mesh -> Plane
Move "Plane.001" 3 units on x-axis (g,x,3,enter)
Add Particle System to "Plane.001"
Particle Settings:

    Emission

	 Number:      3
	 Frame Start: 1
	 End:         1

       Lifetime:    2000
    Velocity
       Normal:      0 m/s
    Physics
       Physics Tape: Boids

	 Relations:

                   Add:
                      Target Object: "Plane"
                      System: 1
                      Mode:  Enemy			   
              Boid Brain
                    Delete the default Rules (Separate and Flock)

	      Add Rule: "Fight"

    Field Weights
       Gravity:   0

Start Animation - Blender will crash after a couple of seconds!

Boid_Test.blend

**System Information** Operating system: Windows-10-10.0.18362-SP0 64 Bits Graphics card: Quadro K3100M/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 426.32 **Blender Version** Broken: version: 2.82 (sub 7), branch: master, commit date: 2020-02-12 16:20, hash: `77d23b0bd7` **Short description of error** When start an animation with two Objects containing a particle system with boid physics and one of them should fight the other, blender will crash. **Exact steps for others to reproduce the error** - Add -> Mesh -> Plane - Add Particle System to "Plane" - Particle Settings: ``` Emission ``` Number: 3 Frame Start: 1 End: 1 ``` Lifetime: 2000 Velocity Normal: 0 m/s Physics Physics Tape: Boids Boid Brain Delete the default Rules (Separate and Flock) Field Weights Gravity: 0 ``` - Add -> Mesh -> Plane - Move "Plane.001" 3 units on x-axis (g,x,3,enter) - Add Particle System to "Plane.001" - Particle Settings: ``` Emission ``` Number: 3 Frame Start: 1 End: 1 ``` Lifetime: 2000 Velocity Normal: 0 m/s Physics Physics Tape: Boids ``` Relations: ``` Add: Target Object: "Plane" System: 1 Mode: Enemy Boid Brain Delete the default Rules (Separate and Flock) ``` Add Rule: "Fight" ``` Field Weights Gravity: 0 ``` - Start Animation - Blender will crash after a couple of seconds! [Boid_Test.blend](https://archive.blender.org/developer/F8372074/Boid_Test.blend)

Thomas Freye commented

2020-02-26 10:07:02 +01:00

Added subscriber: @ThomasFreye

Philipp Oeser commented

2020-02-26 10:48:46 +01:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2020-02-26 10:48:46 +01:00

Changed status from 'Needs Triage' to: 'Confirmed'

Philipp Oeser commented

2020-02-26 10:48:46 +01:00

Can confirm.
For me, blender hangs
#66383 (Boids particle system crash) might be related, checking if this is a duplicate...

Can confirm. For me, blender hangs #66383 (Boids particle system crash) might be related, checking if this is a duplicate...

Philipp Oeser commented

2020-02-26 17:02:07 +01:00

Testing a bit more:

when one can get it to hang, this is where the time is spent:

Also could get it to assert once:

BLI_assert failed: /blender/source/blender/blenlib/intern/kdtree_impl.h:132, BLI_kdtree_3d_insert(), at 'tree->nodes_len <= tree->nodes_len_capacity'

Testing a bit more: when one can get it to hang, this is where the time is spent: ![image.png](https://archive.blender.org/developer/F8373250/image.png) Also could get it to assert once: ``` BLI_assert failed: /blender/source/blender/blenlib/intern/kdtree_impl.h:132, BLI_kdtree_3d_insert(), at 'tree->nodes_len <= tree->nodes_len_capacity' ```

Joakim Tornhill commented

2020-03-09 22:21:24 +01:00

Added subscriber: @BlenderInsight

Joakim Tornhill commented

2020-03-09 22:21:24 +01:00

Can confirm that it do this on 2.82 on my system as well. Sometimes in few seconds... sometimes direct, but it crashes. It doesn't matter if I use Halo, object or collections as enemies.

blender-admin commented

2020-04-01 16:21:34 +02:00

This issue was referenced by 25b2b6724d

This issue was referenced by 25b2b6724d19d6f1f46b0489f58d03215127aeef

Jacques Lucke commented

2020-04-01 16:22:27 +02:00

Changed status from 'Confirmed' to: 'Resolved'

Jacques Lucke closed this issue

2020-04-01 16:22:27 +02:00

Jacques Lucke self-assigned this 2020-04-01 16:22:27 +02:00

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Reference: blender/blender#74224

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Crash with Boids containing Fight Rule #74224