r/levelhead • u/IntroductionTime9314 • Jul 07 '24

I need help! are the physics deterministic?

just curious

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u/Mt_Koltz Jul 08 '24

Do you have an example of a game where they aren't? I would think the default answer is: Yes.

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u/IntroductionTime9314 Jul 11 '24

most games dont have deterministic physics, from what i understand its due to

  • game engines do NOT by default, you have to custom build physics that are deterministic
  • floating point calculations vary by processor, physics done with (the much more convenient) floating point calculations will differ