How do I use the line of sight/turret behavior

Hi people. So I'm trying to figure out how to make my enemy shoot a fireball at my player. However, when my enemy shoots at me, he ends up shooting a gigantic fire wave at me(it doesn't stop shooting). Any suggestions?

Here is my code:

This is my problem by the way. Thanks in advance people! =D

Have a look at "4" - look at putting some kind of delay into this

has line of sight

every 0.5 seconds -- shoot at player

another way

— This is helpful, thank you