How do you make a computer player cast spells

[venjoulytes]

I have a tower defense game and i want spawned creeps to cast spells automatically when they encounter an enemy, how do i do this?

I tried putting an ability on them and setting them to default, i tried turning them into Neutral Hostile controlled but they still wont cast.

If possible i dont want GUI solutions.

 

[MortAr]

Erm... try to make the unit cast the ability when its attacked:

• Trigger Name
  • Events
    • Unit - A unit Is attacked
  • Conditions
    • (Unit-type of (Triggering unit)) Equal to Footman
  • Actions
    • Unit - Order (Attacked unit) to Human Blood Mage - Banish (Attacking unit)

Don't forget to give the unit the order to continue move, or it will only the cast the spell and stay at one point.
And make a condition that checks if the attacking unit already has the buff from the spell or all units will cast it on the first target.

 

[eleljrk]

GUI is the only (Of course vJass and Jass, but i think GUI is best for you..)
First make a new trigger, then add this event:

Unit - A unit is attacked

Then add this conditions:
Unit type of attacked unit equal to <unit with spell>

Then add this action:
Order attacking unit to cast <spell> on attacking unit

This is made without opening WE, so this is not 100% how its writen in Trigger Editor, but thats how basic it is. Add new triggers for each spells.. And if you want to add many spells on 1 unit, then ask agein.