Adding EnergyBall ParticleSystem for our character's main projectile, also
adding an explosion ParticleSystem which is instantiated whenever the
projectile makes contact with another collider. This is controlled by a
simple little script I wrote and attached to the EnergyBall ParticleSystem.
It is located in the Scripts directory named EnergyBall.js. It is attached
to the Energy Ball prefab. I am also adding Long, Medium, and Short
platforms that I created based on the platforms that Joshua added.