Batch Adding and Removing Bodies [SYNTH-253], et al.

[azaleacolburn]

Task

SYNTH-168 (Symptom)
SYNTH-253 (Cause)

Symptom

Spawning fields rapidly causes Jolt to crash. According to Jolt documentation, this can happen when there are too many bodies in the broadphase tree arranged in an unoptimized manner.

Solution

According to the Jolt documentation, there are two ways to ensure optimization, the first is to batch adding bodies, so they can be added and arranged in a more efficient manner. The second is to call OptimizeBroadPhase() on the jolt body interface. There's significant overhead to the second option, and its not recommended with single-threaded Jolt, so instead, we batch adding bodies of a MirabufSceneObject.

Source

Verification

• Fission builds
• All tests pass.
• Performance for fields with many bodies is better on my machine.

Note

Spawning the 2025 field then the 2026 field still causes a memory out of bounds error

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