int red = rand() % 255; // calculate firework color
int green = rand() % red;
currentsector->add_particles(epicenter, 0, 360, Vector(1.4,1.4),
int red = rand() % 255; // calculate firework color
int green = rand() % red;
currentsector->add_particles(epicenter, 0, 360, Vector(1.4,1.4),