Let There Be Light 2

[JohnGreek]

What flags and what executable i must use? With MinGW i just used mingw32-make on the bin folder of the project and i got it compiled. I searched a bit and found out i must provide the *.cpp files manualy?
Don't get me wrong, i don't want anybody to build it for me, i just want to learn how to do it.
Thanks


Edit: I got some progress but still.. Now i get undefined references to __gxx_personality and some other which means i use wrong exception handling DW/SJLJ or smth?

[eXpl0it3r]

IIRC GCC 4.9.x supports std::make_unique. Thus you should get a newer MinGW version, I can recommend the MinGW Builds which are by now part of the MinGW-w64 project.

To use C++14 features you need to add -std=c++14 to the build command.

As for your error, if you don't get exactly the same compiler as your binaries are built with, you'll have to do a clean rebuild with the new compiler (e.g. recompile SFML).

[Jabberwocky]

I'm very happy to see you back lolz! 
Your lighting stuff is great.

[lolz123]

Hello everyone,

LTBL is now almost at what I would call version 2.0! Just looking to fix some minor bugs now and improve performance. I will update the repository again with proper instructions tomorrow, stay tuned!

Antumbras now function properly alongside umbras as well now

For now, here is another beauty-shot 

[DJuego]

Uops!! Precisely yesterday I took a  preliminary look and i tried the example: The application crashed  in the wood bridge

Actually, I miss documentation   A documented API. . At least, I think an exhaustive relation of features would be interesting. For example; does it cover all functionality of the original LTBL (1.5.1)? 
 
In any case, I want you to know that this news has brightened my day a lot,  Thanks! lolz123

DJuego

[lolz123]

New version with bug fixes and instructions is up! I will work on the instructions a bit more later, they are pretty basic right now. But hopefully they are enough to get started!

Also, a demo project is on the way!

[DJuego]

Ok lolz123!



**************************************************************************************
First:

(building with mingw-builds gcc 4.9.2 sjlj)

cmake -G 'MSYS Makefiles' -D CMAKE_BUILD_TYPE=Debug -D CMAKE_INSTALL_PREFIX=$DIRECTORIO_LOCAL -D SFML_ROOT=$DIRECTORIO_LOCAL ../..

[...]
-- Detecting CXX compile features - done
-- Found SFML 2.2 in v:/MinGW-Builds/mingw32/msys/local/include
CMake Error at CMakeLists.txt:14 (target_link_libraries):
  Cannot specify link libraries for target "LTBL2" which is not built by this
  project.
-----------

(building with msvc 18.0.31101.0 )

cmake -G 'NMake Makefiles' -D CMAKE_BUILD_TYPE=Debug -D CMAKE_INSTALL_PREFIX=$DIRECTORIO_INSTALACION_LIBRERIA -D SFML_ROOT=$DIRECTORIO_INSTALACION/SFML ../..

-- Found SFML 2.2 in w:/Archivos_de_programa/MSVC2013/x32/SFML/include
CMake Error at CMakeLists.txt:14 (target_link_libraries):
  Cannot specify link libraries for target "LTBL2" which is not built by this
  project.

------


It requires to add_library. I had to modify the CMakeLists.txt file:

set( SOURCE_PATH "${PROJECT_SOURCE_DIR}/source" )
set( SOURCES
        "${SOURCE_PATH}/ltbl/Math.h"
        "${SOURCE_PATH}/ltbl/Math.cpp" 
        "${SOURCE_PATH}/ltbl/lighting/LightDirectionEmission.cpp"
        "${SOURCE_PATH}/ltbl/lighting/LightDirectionEmission.h"
        "${SOURCE_PATH}/ltbl/lighting/LightPointEmission.cpp"
        "${SOURCE_PATH}/ltbl/lighting/LightPointEmission.h"
        "${SOURCE_PATH}/ltbl/lighting/LightShape.cpp"
        "${SOURCE_PATH}/ltbl/lighting/LightShape.h"
        "${SOURCE_PATH}/ltbl/lighting/LightSystem.cpp"
        "${SOURCE_PATH}/ltbl/lighting/LightSystem.h"
        "${SOURCE_PATH}/ltbl/quadtree/DynamicQuadtree.cpp"
        "${SOURCE_PATH}/ltbl/quadtree/DynamicQuadtree.h"
        "${SOURCE_PATH}/ltbl/quadtree/Quadtree.cpp"
        "${SOURCE_PATH}/ltbl/quadtree/Quadtree.h"
        "${SOURCE_PATH}/ltbl/quadtree/QuadtreeNode.cpp"
        "${SOURCE_PATH}/ltbl/quadtree/QuadtreeNode.h"
        "${SOURCE_PATH}/ltbl/quadtree/QuadtreeOccupant.cpp"
        "${SOURCE_PATH}/ltbl/quadtree/QuadtreeOccupant.h"
        "${SOURCE_PATH}/ltbl/quadtree/StaticQuadtree.cpp"
        "${SOURCE_PATH}/ltbl/quadtree/StaticQuadtree.h"
)

add_library( LTBL2 SHARED ${SOURCES} )
set_target_properties( LTBL2 PROPERTIES DEBUG_POSTFIX -d )

target_link_libraries(LTBL2 ${SFML_LIBRARIES})

*************************************************************************************
Second:

(building with mingw-builds gcc 4.9.2 sjlj)

[ 10%] Building CXX object CMakeFiles/LTBL2.dir/source/ltbl/Math.cpp.obj
p:/Plataformas/x32-x64/TRABAJO_MINGW_x32/LTBL2/LTBL2/source/ltbl/Math.cpp: In fu
nction 'float ltbl::vectorMagnitude(const Vector2f&)':
p:/Plataformas/x32-x64/TRABAJO_MINGW_x32/LTBL2/LTBL2/source/ltbl/Math.cpp:60:9:
error: 'sqrt' is not a member of 'std'
  return std::sqrt(vector.x * vector.x + vector.y * vector.y);
         ^

It requires to modify Math.cpp.

#include <cmath>

*********************************************************************************
Third:

(building with mingw-builds gcc 4.9.2 sjlj)

[ 20%] Building CXX object CMakeFiles/LTBL2.dir/source/ltbl/lighting/LightDirect
ionEmission.cpp.obj
In file included from v:/MinGW-Builds/mingw32/i686-w64-mingw32/include/c++/array
:35:0,
                 from P:/Plataformas/x32-x64/TRABAJO_MINGW_x32/LTBL2/LTBL2/sourc
e/ltbl/quadtree/QuadtreeOccupant.h:9,
                 from P:/Plataformas/x32-x64/TRABAJO_MINGW_x32/LTBL2/LTBL2/sourc
e/ltbl/lighting/LightDirectionEmission.h:4,
                 from p:/Plataformas/x32-x64/TRABAJO_MINGW_x32/LTBL2/LTBL2/sourc
e/ltbl/lighting/LightDirectionEmission.cpp:1:
v:/MinGW-Builds/mingw32/i686-w64-mingw32/include/c++/bits/c++0x_warning.h:32:2:
error: #error This file requires compiler and library support for the ISO C++ 20
11 standard. This support is currently experimental, and must be enabled with th
e -std=c++11 or -std=gnu++11 compiler options.
 #error This file requires compiler and library support for the \
  ^

It requires to modify CMakeLists.txt.

# Compiler-specific flags and definitions
if(CMAKE_COMPILER_IS_GNUCXX)
        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++1y")

endif()
 

*******************************************************************************
Fourth:



(building with mingw-builds gcc 4.9.2 sjlj)
(building with msvc 18.0.31101.0) <- No import libs unfortunately. :-| Will we have official solution in the future?

(SHARED libraries) - Success!!!

Thanks lolz123!



DJuego

[lolz123]

Thanks DJuego!

I'll admit, I was packaging up the library in a hurry yesterday, it was 3AM    (edit - err, today  )

I will fix up the build!

[lolz123]

Hello!

I created a little demo for LTBL2!

Controls:
QWOP: move
Space: sprint

There is no goal, it's just a simple environment with some lighting to look at.

https://drive.google.com/file/d/0B2btNvgW7MHUQ0JfQTQ4ZndmNHc/view?usp=sharing

[Kori]

Does anyone here already build LTBL2 under Linux? After succesfull cmake, during "make" i have this error:

Code: [Select]

[size=10pt]Scanning dependencies of target LTBL2
[ 10%] Building CXX object CMakeFiles/LTBL2.dir/source/ltbl/Math.cpp.o
[ 20%] Building CXX object CMakeFiles/LTBL2.dir/source/ltbl/lighting/LightDirectionEmission.cpp.o
In file included from /home/lord/dev/SFM_THOR_BOX2D/LTBL2-master/LTBL2/source/ltbl/lighting/LightSystem.h:3:0,
                 from /home/lord/dev/SFM_THOR_BOX2D/LTBL2-master/LTBL2/source/ltbl/lighting/LightDirectionEmission.cpp:5:
/home/lord/dev/SFM_THOR_BOX2D/LTBL2-master/LTBL2/source/ltbl/quadtree/DynamicQuadtree.h:3:36: fatal error: ltbl/Quadtree/Quadtree.h: Nie ma takiego pliku ani katalogu  // mean no such file or directory
 #include <ltbl/Quadtree/Quadtree.h>
                                    ^
compilation terminated.
make[2]: *** [CMakeFiles/LTBL2.dir/source/ltbl/lighting/LightDirectionEmission.cpp.o] Błąd 1 // mean error1
make[1]: *** [CMakeFiles/LTBL2.dir/all] Błąd 2 // mean error 2
make: *** [all] Błąd 2 //mean error 2 [/size]


thank you in advance

[dabbertorres]

Looks like a Windows "case does not matter" vs Unix "case does matter" issue to me.

Take a look at the folder name in "#include <ltbl/Quadtree/Quadtree.h>" and compare it to the folder name in ".../ltbl/quadtree/DynamicQuadtree.h:3:36".

(click to show/hide)

Make the 'Q' a 'q' in the #include line, and it should be fixed!

[Kori]

Thanks, but unfortunately no 
But I find something interesting. My folders CMakeFiles/LTBL2.dir/source/ltbl/lighting  and  CMakeFiles/LTBL2.dir/source/ltbl/Quadtree are empty. Maybe this is the problem, now, how to fix it.

[eXpl0it3r]

Download the source again or if you used git, you can just go to the base directory and use git checkout ./

[Rhimlock]

I had the same problem.

The cause was Quadtree/quadtree (case sensitive). So i changed the include-tags and everything worked.

But that was a few month ago.

[Kori]

I download the code again, then in C::B change 'Q' and 'q', solve some problems with c++14 standard, and now everything work. Thanks to all!
Ps. If anyone have any exemple code, maybe send me via priv/mail or paste here. It will be propably more helpful than "quick start" on github.