Development/Tutorials/Games/kglengine/kglengine-simpleBox

    From KDE TechBase
    KGLEngine tutorial 1
    Tutorial Series   KGLEngine2d developement
    Prerequisites   None
    What's Next   Nothing at the moment
    Further Reading   KGLEngine2d's code

    Abstract

    ( Class names has changed ! This tutorial is currently unvaible )

    KGLengine is a powerfull 2d games engine, for people who want to create hight level of games. Instead QGraphicsView system, KGLEngine use all power of openGL and Eigen mathematic library. Now you will be able to create fullscreen games, particles effects for make smoke or explosion, shadow effects, collision detection with a lot of items, and as soon as possible to use Shaders effects.

    Installation

    First : install eigen2 librairy. Second, be sure you have libQt4-dev, libQt4-openGL-dev, and kde4-lib devel. download KGLEngine source from svn :

    svn co svn://anonsvn.kde.org/home/kde/trunk/playground/games/KGLEngine
    

    cd kglengine mkdir build cd build cmake .. make; make install;

    First program

    #include <KApplication>
    #include <KAboutData>
    #include <KCmdLineArgs>
    
    #include <KGLEngine2d>
    #include <KGLItem>
    
    
    using namespace std;
    
    
    int main(int argc, char *argv[])
    {
        KAboutData aboutData("kglintro", 0,
                             ki18n("tutorial1"), "1.0",
                             ki18n("engine 2d"),
                             KAboutData::License_GPL,
                             ki18n("Copyright (c) 2009 Developer"));
        KCmdLineArgs::init(argc, argv, &aboutData);
        KApplication app;
    
        KGLEngine2d *engine= KGLEngine2d::instance(); //init engine
     
    
        engine->setShowAxis(true); //show repere line x,y
        engine->setShowFps(true);   //show fps
        engine->show();  //show window engine
    
    
        KGLItem * box = new KGLItem(QRectF(0,0,0.5,0.5));  //create an item
        box->scale(0.5); //reduce the size
        box->translate(-box->transformCenter()); //translate the box to the center
        box->rotate(M_PI/4); //rotate it with a radius = 45 deg
        box->setColor(Qt::white); //setColor! By default, it's white
        engine->addItem(box); //add item to the engine
    
    
    
         app.exec();
        
        return 0;
    }
    

    Compilation

    This is the CmakeLists.txt Files.

    project(tutorial1)
    
    find_package(KDE4 REQUIRED)
    find_package(Qt4 REQUIRED)
    find_package(OpenGL REQUIRED)
    find_package(Eigen2 REQUIRED)
    
    include(KDE4Defaults)
    
    include_directories(${KDE4_INCLUDES})
    include_directories(${QT_QTOPENGL_INCLUDE_DIR})
    include_directories(${X11_Xrandr_INCLUDE_PATH})
    include_directories(${CMAKE_CURRENT_SOURCE_DIR})
    include_directories(${EIGEN2_INCLUDE_DIR})
    
    add_definitions(${QT_DEFINITIONS} ${KDE4_DEFINITIONS})
    
    
    
    
    ########### next target ###############
    
    set(tutorial1_SRCS 
       main.cpp 
    	)
    
    kde4_add_executable(tutorial1 ${tutorial1_SRCS} )
    
    target_link_libraries(tutorial1 ${KDE4_KDEUI_LIBS} kglengine)
    
    ########### install files ###############