oxygine-framework/examples/Demo/src/main.cpp

/**
    Attention!
    This file initializes the Oxygine engine.
    If you just started here and don't understand the code completely, feel free to come back later.
    You can start from example.cpp and example.h, which main functions are called from here.
*/
#include "core/oxygine.h"
#include "Stage.h"
#include "DebugActor.h"

#include "example.h"


using namespace oxygine;


// This function is called each frame
int mainloop()
{
    // It gets passed to our example game implementation
    example_update();

    // Update our stage
    // Update all actors. Actor::update will also be called for all its children
    getStage()->update();

    if (core::beginRendering())
    {
        Color clearColor(32, 32, 32, 255);
        Rect viewport(Point(0, 0), core::getDisplaySize());
        // Render all actors inside the stage. Actor::render will also be called for all its children
        getStage()->render(clearColor, viewport);

        core::swapDisplayBuffers();
    }

    // Update engine-internal components
    // If input events are available, they are passed to Stage::instance.handleEvent
    // If the function returns true, it means that the user requested the application to terminate
    bool done = core::update();

    return done ? 1 : 0;
}

// Application entry point
void run()
{
    ObjectBase::__startTracingLeaks();

    // Initialize Oxygine's internal stuff
    core::init_desc desc;
    desc.title = "Oxygine Application";

#if OXYGINE_SDL || OXYGINE_EMSCRIPTEN
    // The initial window size can be set up here on SDL builds
    desc.w = 960;
    desc.h = 640;
    // Marmalade settings can be modified from the emulator's menu
#endif


    example_preinit();
    core::init(&desc);


    // Create the stage. Stage is a root node for all updateable and drawable objects
    Stage::instance = new Stage(true);
    Point size = core::getDisplaySize();
    getStage()->setSize(size);

    // DebugActor is a helper actor node. It shows FPS, memory usage and other useful stuff
    DebugActor::show();

    // Initializes our example game. See example.cpp
    example_init();

#ifdef EMSCRIPTEN
    /*
    If you build for Emscripten, mainloop is called automatically and shouldn't be called here.
    See emscripten_set_main_loop in the EMSCRIPTEN section below
    */
    return;
#endif


    // This is the main game loop.
    while (1)
    {
        int done = mainloop();
        if (done)
            break;
    }
    /*
     If we get here, the user has requested the Application to terminate.
     We dump and log all our created objects that have not been freed yet
    */
    ObjectBase::dumpCreatedObjects();

    /*
    Let's clean up everything right now and call ObjectBase::dumpObjects() again.
    We need to free all allocated resources and delete all created actors.
    All actors/sprites are smart-pointer objects and don't need to be removed by hand.
    But now we want to delete it by hand.
    */

    // See example.cpp for the shutdown function implementation
    example_destroy();


    //renderer.cleanup();

    // Releases all internal components and the stage
    core::release();

    // The dump list should be empty by now,
    // we want to make sure that there aren't any memory leaks, so we call it again.
    ObjectBase::dumpCreatedObjects();

    ObjectBase::__stopTracingLeaks();
    //end
}

#ifdef __S3E__
int main(int argc, char* argv[])
{
    run();
    return 0;
}
#endif


#ifdef OXYGINE_SDL

#include "SDL_main.h"
extern "C"
{
    int main(int argc, char* argv[])
    {
        run();
        return 0;
    }
};
#endif

#ifdef EMSCRIPTEN
#include <emscripten.h>

void one() { mainloop(); }

int main(int argc, char* argv[])
{
    run();
    emscripten_set_main_loop(one, 0, 0);
    return 0;
}
#endif