AOE Push Spell

How could I possibly make an AOE spell that pushes players back from the caster? The caster will use the spell then every player within a 6 blocks will be pushed away from the caster. I know it uses vectors and I'm not too skilled with them. Thanks in advance!

 

Loop through nearby entities, and use entity.setVelocity(entity.getLocation().toVector().subtract(p.getLocation().toVector())).

 

Thanks

 

I forgot to mention this, but you might want to normalize the vector.

 

How would I normalize it?

 

.normalize();

 

Oh, what does it do?

 

I dont know. Since it works for me , add it after each .toVector() ...
Basically you can see what it does from googling it or from its title.Makes stuff normal?(and fixes issues...)