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bullet-physics-playground / bpp

The Bullet Physics Playground – Bullet Real-Time Physics Simulation.
https://github.com/bullet-physics-playground
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Lua Object unregistered #26

Closed WRBaumann closed 3 years ago

WRBaumann commented 3 years ago

I'm excited about the project and might pick it up and extend it but I'm having troubles getting started.

I see Assert 'bcrep && You cannot derive from an unregistered class'. It looks like Object failed to registered (?) thus derived classes fail. I commented out "Objects" and it just failed on the next object "Cube". I don't know Lua infrastructure so figuring this out is bigger than I'm willing to tackle without a few clues.

I made it this far on Ubuntu 20.04 and would be happy to push changes down once I have things working minimally.

koppi commented 3 years ago

Hi, thank's first for giving it a try. Did not yet try to compile and run bpp on Ubuntu 20.04. So maybe some things have been changing in a recent release of the luabind framework (- but I didn't yet look into this, and I currently have very little time to play with bpp, sorry).

koppi commented 3 years ago

Hi @WRBaumann , i see the assert is in https://github.com/luabind/luabind/blob/master/src/class_rep.cpp . Was able to reproduce the above assertion on Ubuntu 20.04, but currently have no clue, howto fix it in bpp.

WyomingWill commented 3 years ago

I have just compiled on Linux Mint 20 and have the same issue. I'm so interested in this code I may just go back to Ubuntu 18.04 (or Mint 18.04?).

bpp: /build/luabind-7wTFgT/luabind-0.9.1+git20150823+dfsg/src/class_rep.cpp:166: void luabind::detail::class_rep::add_base_class(luabind::detail::class_rep*): Assertion `bcrep && "You cannot derive from an unregistered type"' failed.

Any possible fixes?

koppi commented 3 years ago

I just fixed the luabind assert. Please give it a try.

WyomingWill commented 3 years ago

Thank you. I'll start with a fresh installation of Linux Mint 20 again and give it a try! I really like what you've done here. I'm been looking for months for a reasonable workflow for testing clock escapements that includes the ability to handle STL files and has reasonable physics, and I'm very interested in this. With a lot of work I got a Graham escapement running reasonably well using your code. It took me a lot of work to get it working on Linux Mint 20 last time but I'm hoping with fresh install that it'll be smooth.

koppi commented 3 years ago

Just for info: I have pushed another luabind related fix to to the bpp repo about two hours ago. Hope, it works for you.