I am using Havok for physics and i want to simulate objects movement in miliseconds. I mean i need to fast forward time. This example with Ammo.js is what i need with Havok. I tried setTimestep method but nothing changes. My code here . How to fix this issue with Havok?

fix Plugin V2 timestep BabylonJS:master ← CedricGuillemet:fixHavokTimeStep opened 02:08PM - 12 Feb 24 UTC (UTC) [CedricGuillemet] CedricGuilleme…

Indeed, there is something wrong with time steps. I’ll fix that this week and it should be part of next Babylon.js npm release this week.

Hey! @Cedric @Evgeni_Popov It looks this is still an issue, I’m trying to apply the setTimestep but it doesn’t change the speed at all. Here is a playground https://playground.babylonjs.com/#Z8HTUN#962 I tried to put different values but it doesn’t really change. Also able to reproduce in my loc…

You need to set Havok plugin to not use delta time provided by the browser. like this : Babylon.js Playground Babylon.js playground is a live editor for Babylon.js WebGL 3D scenes

Hi! I was testing the sandbox in fps locked firefox and unlocked chrome and the physics engine does not run on the timestep. @Cedric do you know why this is happening? https://youtu.be/KVWTESIOqWs

with disabled delta time, timestep is being used. but it’s becomes dependent on the framerate.

Do you know if there is any way to limit it to run only on certain frames so it only runs when the timestep has passed?

Maybe you’ll get expected results using non wrapped Havok function: var hk = new BABYLON.HavokPlugin(); // enable physics in the scene with a gravity scene.enablePhysics(new BABYLON.Vector3(0, -9.81, 0), hk); hk._hknp.HP_World_SetIdealStepTime(hk.world, 1/3000); This will change Havok Timestep int…

That unfortunately did not work https://playground.babylonjs.com/#Z8HTUN#964 Is there anything else that you can think of that would work?

If I understand correctly, you’d need to way to set a time factor? This factor would be used to modulate delta time or fixed time step.

How to make Havok physics simulation faster

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Cedric April 24, 2024, 4:02pm 10

You need to set Havok plugin to not use delta time provided by the browser. like this :

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How to make Havok physics simulation faster

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