main.cpp

/*This piece of code was originally from Lazy Foo' Productions
(http://lazyfoo.net/)
I edited someparts
*/


#include "LUtil.h"

void runMainLoop( int val );
/*
Pre Condition:
 -Initialized freeGLUT
Post Condition:
 -Calls the main loop functions and sets itself to be called back in 1000 / SCREEN_FPS milliseconds
Side Effects:
 -Sets glutTimerFunc
*/

int main( int argc, char* args[] )
{
    //Initialize FreeGLUT
    glutInit( &argc, args );
glEnable(GL_TEXTURE_2D);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_BLEND);
glEnable(GL_TEXTURE_2D);
glEnable(GL_BLEND);
glDisable(GL_DEPTH_TEST);
    //Create OpenGL 2.1 context
    glutInitContextVersion( 2, 1 );


    //Create Double Buffered Window
    glutInitDisplayMode( GLUT_DOUBLE );
    glutInitWindowSize( SCREEN_WIDTH, SCREEN_HEIGHT );
    glutCreateWindow( "OpenGL" );

    //Do post window/context creation initialization
    if( !initGL() )
    {
        printf( "Unable to initialize graphics library!\n" );
        return 1;
    }

    //Set keyboard handler
    glutKeyboardFunc( handleKeys );

    //Set rendering function
    glutDisplayFunc( render );

    //Set main loop
    glutTimerFunc( 1000 / SCREEN_FPS, runMainLoop, 0 );

    //Start GLUT main loop
    glutMainLoop();

    return 0;
}

void runMainLoop( int val )
{
    //Frame logic
    update();
    render();

    //Run frame one more time
    glutTimerFunc( 1000 / SCREEN_FPS, runMainLoop, val );
}