DOTS-based Physics

[SubPixelPerfect]

news

Unity at GDC Keynote 2019

We need a link, can’t wait to try it )

[DMeville_1]

Is it the UnityPhysicsExample added 5 hours ago here? The non-havok version mentioned at least maybe, downloading it now to try it out!

https://github.com/Unity-Technologies/EntityComponentSystemSamples
https://github.com/Unity-Technologies/EntityComponentSystemSamples/blob/master/UnityPhysicsExamples/Documentation/samples.md

[MD_Reptile]

And now we need a comparison between the standard physX we have been using, and this new experimental stuff, and later - the havok stuff. So… who gonna do it?

[SubPixelPerfect]

yes looks like non havok physics version it is in the package manager, as well as GOAP AI Planner (which is ecs based as well WOW!)

[Kirsche]

Difference between Unity Physics and Havoc Physics:

“The new Unity Physics is a stateless design. which means that rather than rely on caching, we can use the efficiencies from DOTS to give developers a much simpler physics framework to tweak and modify,” wrote Bowell.

By comparison, “if you have a team that has experience with Havok Physics or your use-cases are pushing on complex and high-fidelity physics requirements, the caching system of Havok Physics can offer better stability and performance,” according to Bowell.

“On the tooling side, we’ve focused on streamlining the authoring side of things so you can build your physics content once and then swap the physics backend between Unity Physics or Havok Physics,” he continued. “This is achieved by having a single data representation model of the editor data that is then converted into ECS data and shared between the two physics simulation backends.”

Source & full article: news

Possible release date:

We are working closely with Unity to develop an officially supported Havok Physics integration for Unity. This integration will be made available in June 2019.

Source: https://www.havok.com/products/havok-physics/

[elbows]

@DMeville_1

Is it the UnityPhysicsExample added 5 hours ago here? The non-havok version mentioned at least maybe, downloading it now to try it out!

https://github.com/Unity-Technologies/EntityComponentSystemSamples
https://github.com/Unity-Technologies/EntityComponentSystemSamples/blob/master/UnityPhysicsExamples/Documentation/samples.md

Yes I tried that just now and it works (and physics examples project manifest already contains a reference to unity physics so its installed automatically when using that project). But it is 2.35am here so I only tried it for a minute and am now going to bed.

[Soaryn]

Unfortunately it seems to have a issue with dynamic object interaction

DOTS Physics: Dynamic objects will not settle on other dynamic objects

As demonstrated in the gif below, any dynamic physics body that comes in contact with a static physics body, stop as intended with the expectation from Neuton's 2nd law; however, when a dynamic body attempts to settle on another dynamic body, it seems to fight back a bit resulting in bouncing effects. This happens with varying values of friction and restitution as well. It occurs in new empty scenes with minimal components as well as the samples provided. [4334533--391057--bounce.gif] Questi…

[davenirline]

@SubPixelPerfect

yes looks like non havok physics version it is in the package manager, as well as GOAP AI Planner (which is ecs based as well WOW!)

Oh shoot, is it a separate package? I’m currently making one but maybe I don’t have to.

[Arowx]

Will either allow for larger worlds?

[Nothke]

Does it only work in Unity 2019? Trying to install on 2018.3 and I get a
Assembly has reference to non-existent assembly 'Unity.Blobs'
error. Can’t find anything on “Blobs”

[davenirline]

The latest version of Entities package only works for 2019.

[rz_0lento]

There’s an official thread about this topic here: Unity Physics Discussion