How to detect unit that is most near from some point?

[ALiEN95]

For example if you have some harvesters they will automatically go to nearest house,now how can i order my unit to do something like that


something like this

order (my unit) to attack nearest (enemy)

or

kill the most near unit from center of playable map area ?

 

[Venks]

http://www.hiveworkshop.com/forums/jass-functions-413/getclosestunit-s-59254/

 

[ALiEN95]

Sorry i don't really understand much JASS and it looks to big for such thing that should be simple,im sure blizzard is doing it on another way,

anyway i did it like this and i didn't have any problems/lags/bugs

"RANGE = A x 100" means that it will not be more correct than 100 range,so it might miss for 100 range..you can set 50 if you want

thanks anyway

• Actions
  • Set TF = True
  • Set POINT = (Center of (Playable map area))
  • For each (Integer A) from 1 to 1000000000, do (Actions)
    • Loop - Actions
      • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
        • If - Conditions
          • TF Equal to True
        • Then - Actions
          • Set RANGE = ((Integer A) x 100)
          • Set UNITGROUP = (Units within (Real(RANGE)) of POINT matching (((Matching unit) is alive) Equal to True))
          • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
            • If - Conditions
              • (UNITGROUP is empty) Not equal to True
            • Then - Actions
              • Unit - Kill (Random unit from UNITGROUP)
              • Set TF = False
            • Else - Actions
          • Custom script: call DestroyGroup(udg_UNITGROUP)
        • Else - Actions
  • Custom script: call RemoveLocation(udg_POINT)

 

[Squidle]

A event with a range... perhaps?

If a unit comes in a range of lala blablablaa...

 

[ALiEN95]

A event with a range... perhaps?

If a unit comes in a range of lala blablablaa...

No.................

You miss read the post xD,you cant do anything with that event that will detect the nearest unit (from some point) when you want

 

[JansiGX]

this is just a basic operation to find the smallest value (distance)

• Actions
  • Set Point1 = (Center of (Playable map area))
  • Set tempGroup = (Units in (Playable map area))
  • Set UNIT1 = (Random unit from tempGroup)
  • Set Point2 = (Position of UNIT2)
  • Set Distance1 = (Distance between Point1 and Point2)
  • Custom script: call RemoveLocation (udg_Point2)
  • Unit Group - Pick every unit in tempGroup and do (Actions)
    • Loop - Actions
      • Set UNIT2 = (Picked unit)
      • Set Point2 = (Position of UNIT2)
      • Set Distance2 = (Distance between Point1 and Point2)
      • Custom script: call RemoveLocation (udg_Point2)
      • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
        • If - Conditions
          • Distance2 Less than Distance1
        • Then - Actions
          • Set UNIT1 = UNIT2
        • Else - Actions
  • Custom script: call DestroyGroup(tempGroup)
  • Custom script: call RemoveLocation (udg_Point1)
  • -------- Now UNIT1 is the closest to the point --------

 

[ALiEN95]

this is just a basic operation to find the smallest value (distance)

• Actions
  • Set Point1 = (Center of (Playable map area))
  • Set tempGroup = (Units in (Playable map area))
  • Set UNIT1 = (Random unit from tempGroup)
  • Set Point2 = (Position of UNIT2)
  • Set Distance1 = (Distance between Point1 and Point2)
  • Custom script: call RemoveLocation (udg_Point2)
  • Unit Group - Pick every unit in tempGroup and do (Actions)
    • Loop - Actions
      • Set UNIT2 = (Picked unit)
      • Set Point2 = (Position of UNIT2)
      • Set Distance2 = (Distance between Point1 and Point2)
      • Custom script: call RemoveLocation (udg_Point2)
      • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
        • If - Conditions
          • Distance2 Less than Distance1
        • Then - Actions
          • Set UNIT1 = UNIT2
        • Else - Actions
  • Custom script: call DestroyGroup(tempGroup)
  • Custom script: call RemoveLocation (udg_Point1)
  • -------- Now UNIT1 is the closest to the point --------

Doesn't look like it could work but i didn't do it jet,did you check it with more units?

 

[JansiGX]

I didn't check it at all. I'm not near my home computer and one I'm currently using is so damn slow that I don't have a wish to test it.

EDIT:
Idea of trigger was to take one random unit in group and set it as closest. Then I compare distance between the point1 and other units in group. if it's smaller then I make that unit new closest.
Does it sound like it could work now?

Another Edit:
I missed one thing in if/then/else part. It should also set Distance2 to Distance1.

• If - Conditions
• Distance2 Less than Distance1
• Then - Actions
• Set UNIT1 = UNIT2
• Set Distance1= Distance2
• Else - Actions

FINAL EDIT:
now when I'm back to my home computer I tested my trigger and it works good. I'm also attaching sample map.