void blit(SDL_Surface *image, int x, int y, SDL_Surface *dest)
{
    // Exit early if image is not on dest at all
    if (x + image->w < 0 || x >= dest->w || y + image->h < 0 || y >= dest->h)
        return;

    // Set up a rectangle to draw to
    SDL_Rect blitRect;

    blitRect.x = x;
    blitRect.y = y;
    blitRect.w = image->w;
    blitRect.h = image->h;

    /* Blit onto the destination surface */
    if (SDL_BlitSurface(image, NULL, dest, &blitRect) < 0)
    {
        printf("BlitSurface error: %s\n", SDL_GetError());
        showErrorAndExit(2, "");
    }

    // Only if it is to the screen, mark the region as damaged
    if (dest == screen)
        addBuffer(blitRect.x, blitRect.y, blitRect.w, blitRect.h);
}