perf: Optimize RocketSoundEnhancement.LateUpdate by patching AudioSource ctor#42
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JonnyOThan merged 1 commit intoKSPModStewards:masterfrom Nov 8, 2025
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Every frame, RocketSoundEnhancement makes a FindObjectsOfType call in order to discover any new AudioSources that have been created in the last frame. This is slow. This commit does away with that by: - Patching AudioSource::.ctor to add the newly created AudioSource object to a list (if there is currently an instance of RocketSoundEnhancement active). - Processing the new items in the list in LateUpdate instead of checking all available items. There might be some further simplifications that can be done here now that we know that we're only processing new AudioSources. None of them would have an effect on performance though, so I have left them in just to be safe. In my testing this change reduces the time spent in RSE.LateUpdate from 4.4s to 90ms over a 253s launch to orbit.
JonnyOThan
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Nov 8, 2025
| build: | ||
| uses: KSPModdingLibs/KSPBuildTools/.github/workflows/build.yml@0.0.4 | ||
| with: | ||
| dependency-identifiers: Harmony2 |
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This should be use-ckan: true and set the properties appropriately in the csproj
JonnyOThan
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Nov 8, 2025
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| // This makes sure things still work even if a new audio source ends | ||
| // up being created while we are running. | ||
| source = newAudioSources[newAudioSources.Count - 1]; |
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Maybe should check if the source is destroyed here and only return non-destroyed ones?
Oh never mind I thought you might be spreading them out over several frames.
JonnyOThan
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Nov 8, 2025
| { | ||
| AudioSource source = (AudioSource)sourceObj; | ||
| if (source != null) source.outputAudioMixerGroup = null; | ||
| if (source != null) |
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There is a faster null check, see KSPCF
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Every frame, RocketSoundEnhancement makes a FindObjectsOfType call in order to discover any new AudioSources that have been created in the last frame. This is slow.
This commit does away with that by:
There might be some further simplifications that can be done here now that we know that we're only processing new AudioSources. None of them would have an effect on performance though, so I have left them in just to be safe.
In my testing this change reduces the time spent in RSE.LateUpdate from 4.4s to 90ms over a 253s launch to orbit.
In addition to the optimization itself, I have also: