[Trigger] How to cancel a custom ability trigger on cancelling/moving?

[bruunk]

I apologize if this has a million other threads solving this problem but I couldn't find them.

I was wondering how to cancel a triggers functions once a unit moves, eg. stops casting/channeling the ability.

Right now I have a custom "starfall" ability where if the unit casting cancels the spell early he will continuously have explosions on his position but be doing no damage.
I understand that the "wait" function is probably not the ideal thing to be using here, but I am unsure how to make a cleaner trigger that would work better, or even properly.
This one works, but it would be vastly superior to have one that does not have inconsistent special effects.

---- Trigger currently in use ---->

• MG InfPillar
  • Events
    • Unit - A unit Begins channeling an ability
  • Conditions
    • (Ability being cast) Equal to Inferno Pillar (MG)
  • Actions
    • For each (Integer A) from 1 to 7, do (Actions)
      • Loop - Actions
        • Set VariableSet UnitAbilPos[1] = (Position of (Triggering unit))
        • Special Effect - Create a special effect at UnitAbilPos[1] using Abilities\Spells\Demon\DarkPortal\DarkPortalTarget.mdl
        • Set VariableSet SpecialEffectAbil[0] = (Last created special effect)
        • Special Effect - Set Scale of SpecialEffectAbil[0] to 1.25
        • Special Effect - Set Color of SpecialEffectAbil[0] to r: 175, g: 175, b: 55
        • Wait 1.50 seconds
        • Special Effect - Destroy SpecialEffectAbil[0]
    • Custom script: call RemoveLocation(udg_UnitAbilPos[1])

I'm also interested in this because I may have triggers that are not only special effects that will need to stop their functions when the ability is no longer channelled.

 

[Kino]

Example

 

[bruunk]

@Kino Thank you very much my friend, I will tinker with this and get something working. +rep <3