Scene Transition Test

This task was given by a game development company for developer test. Problem description are as follows:

The app consists of 3 scenes. A timeline, that is visible at all time allows the user to navigate between these scenes and shows which scene the user is currently in. Transitioning between scenes should be seamless (no jumps).

In Scene 1 a Title fades in.

In Scene 2 three spheres rotate around each other. The User can select any of the spheres. When pressing a sphere, a transition will start: The remaining spheres fade out and the pressed sphere moves to the Center of Scene 3.

Scene 3 shows the selected Sphere with additional GameObjects (can be anything) that fade in. A Button allows restarting at Scene 1.