Forum Thread: http://forums.facepunchstudios.com/showthread.php?t=546411

Powerball!
From the readme:

POWERBALL Version 1.0
by Ryan 'Joudoki' Lewellen

Info
This is a SENT based on the Rollermine.
Primary attack is a chargeup zap.
Secondary attack is a powerful shockwave.
Boost ability (shift) allows to ball to reach high speeds.
If the ball hits something at a high enough of a speed,
it will trigger the shockwave ability. The harder the ball hits
that something, the bigger the explosion.
The ball can also jump.

Customization
If you're not much into Lua but want to customize your powerball,
open up the shared.lua inside of the entities/powerball/ directory.
It has all of the easily editable settings, such as cooldowns, attack
powers, etc.

PLEASE SEND ALL BUG REPORTS TO JOUDOKI@GMAIL.COM
OR POST IT IN THE FORUM THREAD

Install
Extract to garrysmod/addons
Can be spawned from the menu
Press use on the ball to get in


Credits
Thanks to Mahalis for his Wormhole SENTS, I learned how to do effects from them.
( I may have also used one of the effects D= Thanks Mahalis! )