dice and AABB test

//random() and isColliding() courtesy of ulfben, used with permission.
//  https://pastebin.com/TLEZK0M8
//  RNG in C++11: https://isocpp.org/files/papers/n3551.pdf
//returns random number between min-max (inclusive)
int random(int min, int max) {
    static std::random_device rd; //obtain a random seed from hardware
    static std::mt19937 eng(rd()); //seed the generator
    std::uniform_int_distribution<> distr(min, max); //define the range
    /*std::uniform_real_distribution<>*/ //use if you want floats!
    return distr(eng);
}
//AABB intersection test
bool isColliding(const SDL_Rect& lhs, const SDL_Rect& rhs) {
    SDL_assert(&lhs != &rhs);
    return !(lhs.x + lhs.w < rhs.x  //!(lhs.right < rhs.left
        || rhs.x + rhs.w < lhs.x    //|| rhs.right < lhs.left
        || lhs.y + lhs.h < rhs.y    //|| lhs.bottom < rhs.top
        || rhs.y + rhs.h < lhs.y);  //|| rhs.bottom < lhs.top)
}