"Unit in range of.."

[Fingolfin]

Is ther ea good way to make an event registering if a unit comes close to another?
I would normally use a periodic trigger checking every one second, is that too unefficient?

 

[Amigurumi]

• Trigger 1
  • Events
    • Map initialization
  • Conditions
  • Actions
    • Unit Group - Pick every unit in (Units in (Playable map area)) and do (Actions)
      • Loop - Actions
        • Trigger - Add to Trigger 3 <gen> the event (Unit - A unit comes within 256.00 of (Picked unit))

• Trigger 2
  • Events
    • Unit - A unit enters (Entire map)
  • Conditions
  • Actions
    • Trigger - Add to Trigger 3 <gen> the event (Unit - A unit comes within 256.00 of (Entering unit))

• Trigger 3
  • Events
  • Conditions
  • Actions
    • Special Effect - Create a special effect at (Position of (Triggering unit)) using Abilities\Spells\Human\ThunderClap\ThunderClapCaster.mdl

and instead of the special effect, do your actions.
But don't forget to remove the leaks. (I didn't)

 

[Fingolfin]

• Trigger 1
  • Events
    • Map initialization
  • Conditions
  • Actions
    • Unit Group - Pick every unit in (Units in (Playable map area)) and do (Actions)
      • Loop - Actions
        • Trigger - Add to Trigger 3 <gen> the event (Unit - A unit comes within 256.00 of (Picked unit))

• Trigger 2
  • Events
    • Unit - A unit enters (Entire map)
  • Conditions
  • Actions
    • Trigger - Add to Trigger 3 <gen> the event (Unit - A unit comes within 256.00 of (Entering unit))

• Trigger 3
  • Events
  • Conditions
  • Actions
    • Special Effect - Create a special effect at (Position of (Triggering unit)) using Abilities\Spells\Human\ThunderClap\ThunderClapCaster.mdl

and instead of the special effect, do your actions.
But don't forget to remove the leaks. (I didn't)

Oh, i forgot there is actually a trigger to check this. -.-
Sorry, a moderator can close this thread now. Thanks for the reply.