#include <SDL.h>
#include <iostream>
#include <time.h>
#include <stdlib.h>

void exitProgram()
{
    std::cout << "Kilépéshez nyomj meg egy billentyűt..." << std::endl;
    std::cin.get();
}

int main( int argc, char* args[] )
{
    atexit( exitProgram );


    if ( SDL_Init( SDL_INIT_VIDEO ) == -1 )
    {
        std::cout << "[SDL indítása]Hiba az SDL inicializálása közben: " << SDL_GetError() << std::endl;
        return 1;
    }

    SDL_Window *win = 0;
    win = SDL_CreateWindow( "Hello SDL!",
                            100,
                            100,
                            640,
                            480,
                            SDL_WINDOW_SHOWN);

    if (win == 0)
    {
        std::cout << "[Ablak létrehozása]Hiba az SDL inicializálása közben: " << SDL_GetError() << std::endl;
        return 1;
    }


    SDL_Renderer *ren = 0;
    ren = SDL_CreateRenderer(   win,
                                -1,
                                SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
    if (ren == 0)
    {
        std::cout << "[Renderer létrehozása]Hiba az SDL inicializálása közben: " << SDL_GetError() << std::endl;
        return 1;
    }

    srand(time(NULL));
    for (int i = 1; i <= 2000; ++i) {

        int r = rand()% 255;
        int g = rand() % 255;
        int b = rand() % 255;

        SDL_SetRenderDrawColor(ren, r, g, b, 255);
        SDL_RenderClear(ren);
        SDL_RenderPresent(ren);
        SDL_Delay(10);

    }


    SDL_DestroyRenderer( ren );
    SDL_DestroyWindow( win );

    SDL_Quit();

    return 0;
}