Hi dagbud,

The recommended way to go about using Mopps is to try to get all your fixed geometry into one fixed rigid body(usually an hkpExtendedMeshShape) and then wrap that rigid body with a Mopp. You are going to want to generate your Mopp code before runtime as it can take some time to generate. The docs have some good information on Mopps, specifically Havok Physics/Collision Detection/Offline generation of data and Havok Physics/Collision Detection/Creating Shapes/Landscapes. I hope this helps.

Thanks,
Sean

Hi dagbud,

You are going to want to export the rigid body and create the Mopp at the same time. If you look at the section Havok Content Tools/Havok Filter Pipeline/Physics Filter documentation, it tells you how to do this. You are going to want all your fixed geometry in one rigid body and therefore one Mopp in order to get the best performance. The Mopp is really just a bounding volume tree wrapper that you can put around a rigid body(usually hkpExtendedMeshShapes).

It is possible to generate the Mopp in code, but you should not generate Mopps at runtime. You can look in the MoppCodeStreamingDemo.cpp for an example of how to do this. I hope this helps.

Thanks,
Sean

Sean,

You said, "You are going to want to export the rigid body and create the Mopp at the same time." Don't the Havok Content Tools do that for you if you tag the fixed geometry as a mesh?

-Michael

Hi Michael,

Yes, the Havok Content Tools create the Mopp data when you export as long as you have the box checked and so forth. I was trying to say that you don't need to do it in two steps, export the fixed rigid body and then create the Mopp. You can do this operation all at once from the exporter.

Thanks,
Sean