How to get an arrray with all the characters inside a spell cone to damage them?

Help and Feedback Scripting Support
1

Hey everyone! I’m trying to make a Tower Unit.
I would like to make a spell that damage all units in a cone in front of the tower.
The result I’m looking for is something like the cone of some units in ASTD (All Star Tower Defense).
So the width of the cone will grow with the distance.
Should I use the GetTouchingParts() function and then detect if they have a humanoid and if they are a mob or there is a better way I don’t may don’t know?

I take all the advice.
Thank you.