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Fix negative delta arguments backport to 3.x #52947

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merged 1 commit into from
Sep 29, 2021

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zmanuel
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@zmanuel zmanuel commented Sep 22, 2021

Cherry pick of #35617

There have been a couple of variable renames in the main branch, so some manual re-adaptions were needed.

Three attack points, all after the regular calculations:
1. Prevent negative physics timestep counts. They could occur if
   physics_jtter_fix is changed at runtime.
2. idle_step is not allowed to go below 1/8th of the input step.
   That could happen on physics_jitter_fix changes or heavily
   fluctuating performance.
3. Prevent that the idle_step modification breaks the promise
   that Engine.get_physics_interpolation_fraction() is between
   0 and 1 by doing more physics steps than the base system wants.

Fixes godotengine#26887

Co-authored-by: Hugo Locurcio <[email protected]>
Cherry-Pick from 6be702b.
@zmanuel zmanuel requested a review from a team as a code owner September 22, 2021 20:02
@zmanuel zmanuel changed the title Fix negative delta arguments Fix negative delta arguments backport to 3.x Sep 22, 2021
@Calinou Calinou added this to the 3.4 milestone Sep 22, 2021
@akien-mga akien-mga merged commit 2ad1c85 into godotengine:3.x Sep 29, 2021
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Thanks!

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3 participants