Lime - Yet another engine

[bazhenovc]

Hi!

I`m developing an open source 3D engine, called Lime. Here is the link to GitHub.

It is object oriented, <hopefully> fast engine that uses OpenGL 3.3(yes, it is fully shader based) for graphics, OpenAL for sound and Bullet for physics.
Also there are 11 samples here and some wiki docs.
The source code is clean and documented

At the moment Lime runs on Linux and Windows. Required libraries: X11, OpenAL, vorbisfile, ogg, glm. Optional libraries: assimp. Building with CMake). Note that on Arch Linux, glm is named glmath, and located in the AUR.
The key feature is the ability to "alt+tab" fullscreen window

Now Lime needs help! I now have much less free time to handle it by myself
Programmers, testers. artists are welcome!

[KroArtem]

Any screenshots?

[bazhenovc]

Sure.
This is the main demo, showing dynamic lighting, sound and sky. It is interactve - you can go around.
This shows simple skybox.
This one shows geometry shader.
And this one shows physics.

P.S.
Cubes, spheres and torus are meshes, stored in mesh files with custom binary format.

[charlie]

Could you upload as attachments to your original post in this thread?

[bazhenovc]

Done

[rogerdv]

What about an scene editor? Is it planned?

[bazhenovc]

Yes, it is planned and in progress.

[rogerdv]

Ok, definitely I will take a look at this and also will try to compile under Windows.

[rogerdv]

cmake fails to detect bullet, which is installed in my system, also, can you post the git command to checkout the code?

[bazhenovc]

Thanks, i really appreciate your help

Unfortunately i cannot help with anything related to windows and bullet - i have no windows copy at all

The git command to checkout the code is:

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git clone git@github.com:bazhenovc/lime.git


[rogerdv]

The problem is under Linux: ubuntu 10.04.

[bazhenovc]

Have you installed bullet-dev or something like that?

[rogerdv]

Is that in the repos? I installe dbullet manually, with make install, and it is located in /usr/include /usr/lib

[bazhenovc]

Repos are the preferred way

However you can hardcode include_directories and libs, like this:

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include_directories(/usr/include/bullet)
target_link_libraries(some_target BulletCollision BulletDynamics)


[rogerdv]

checked again, bullet is not in Ubuntu repos.

[bazhenovc]

Hmm, thats bad.

Fortunately Bullet is not essential. You can open Samples/CMakeLists.txt and comment out line 12:

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add_subdirectory(8.Bullet) -> #add_subdirectory(8.Bullet)


[rogerdv]

Weird, seems there is a problem detecting lua config:

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[ 89%] Building CXX object Bindings/Lua/CMakeFiles/LimeLua.dir/source/limeLUA_wrap.cxx.o
/home/roger/projects/bazhenovc-lime-a556f2f/Bindings/Lua/source/limeLUA_wrap.cxx:745:17: fatal error: lua.h: No existe el fichero o el directorio
compilation terminated.
make[2]: *** [Bindings/Lua/CMakeFiles/LimeLua.dir/source/limeLUA_wrap.cxx.o] Error 1
make[1]: *** [Bindings/Lua/CMakeFiles/LimeLua.dir/all] Error 2
make: *** [all] Error 2


But I have lua installed (I use it for my games). Perhaps it is that Ubuntu/debian have a different name for Lua libs.

[bazhenovc]

Strange, lua.h should live in /usr/include ...

However samples should be ready now. LimeLua and LimePython are used by scene editor only.

Another solution: change lua to python: open Bindings/CMakeLists.txt and do this:

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add_subdirectory(Lua) -> #add_subdirectory(Lua)
#add_subdirectory(Python) -> add_subdirectory(Python)


Or just comment out

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add_subdirectory(Tools/SceneEd)

from the root CMakeLists.txt

[rogerdv]

Indeed the demos are there! It looks promissing, if I knew something about cmake I would try to solve the problems, but I use scons. Changing to python cause much more errors, I have to check if I have the correct -dev packages installed.

[bazhenovc]

Thanks:)

Actually i dont like neither Lua nor Python, however i needed a scripting language for scene editor. The perfect way is to implement something small, simple and funny, like Tcl, and use it.

[rogerdv]

Im taking this to home now, I will try to build there and also make some VC project for windows.

[bazhenovc]

CMake can generate VC projects automagically With automatic project updates, etc. It is very useful

[rogerdv]

Ok, I think we need a forum. I found a problem compiling under Ubuntu 11.10:

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In file included from /home/roger/projects/bazhenovc-lime-a556f2f/Plugins/RenderGL/source/RenderWindow.cc:8:0:
/home/roger/projects/bazhenovc-lime-a556f2f/Plugins/RenderGL/source/X11RenderWindow.cc: En el constructor ‘Lime::RenderWindow::RenderWindow()’:
/home/roger/projects/bazhenovc-lime-a556f2f/Plugins/RenderGL/source/X11RenderWindow.cc:97:15: error: se asigna a una matriz desde una lista de inicializador
make[2]: *** [Plugins/RenderGL/CMakeFiles/LimeRenderGL.dir/source/RenderWindow.cc.o] Error 1
make[1]: *** [Plugins/RenderGL/CMakeFiles/LimeRenderGL.dir/all] Error 2
make: *** [all] Error 2


The translation: assignment to a matrix form an initializer list.

[bazhenovc]

What gcc version do you have? If i remember well, this worked fine since 4.4.

Checkout the latest revision - it is fixed.

EDIT:
About forum: actually i have no free time to continue development. However, if so demaned, i can think about combining my current work and opensource development.

[rogerdv]

I think 11.10 uses 4.6. Whats the git checkout command? Im not clear about the url after git checkout