Attack nearest enemy – is it possible?

[DoctorReza]

how can i order a unit to attack nearest enemy unit?

 

[deathismyfriend]

use a unit group to get units in range.
Then use a sorting method to find the unit with shortest distance then order unit to attack that unit.

 

[DoctorReza]

i have no idea how to sort them would you please explain a little bit

 

[Nichilus]

This was posted by Maker in some other thread

• Closest Unit
  • Events
    • Your event
  • Conditions
    • Your conditions
  • Actions
    • Set point1 = (Position of (Triggering unit))
    • Set real1 = 10000.00
    • Custom script: set bj_wantDestroyGroup = true
    • Unit Group - Pick every unit in (Units within 1500.00 of point1) and do (Actions)
      • Loop - Actions
        • Set point2 = (Position of (Picked unit))
        • Set real2 = (Distance between point1 and point2)
        • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
          • If - Conditions
            • real2 Less than real1
          • Then - Actions
            • -------- We have found our closest unit --------
            • Set Unit1 = (Picked unit)
            • Set real1 = real2
          • Else - Actions
        • Custom script: call RemoveLocation(udg_point2)
    • Custom script: call RemoveLocation(udg_point1)
    • -------- Closest unit to point1 is Unit1 --------

point1 and point2 are point variables, real1 and real2 real variables and unit1 is unit variable.

You can tweak it a bit by adding conditions for unit group and increasing/decreasing the range.

 

[DoctorReza]

thank you

 

[deathismyfriend]

thanks nichilus i couldn't type the whole thing on my phone lol.

 

[Spartipilo]

If you order to attack on the ground on the unit position it will look for the nearest enemy that represents a threat.

 

[Vinz]

Trigger

This was posted by Maker in some other thread

• Closest Unit
  • Events
    • Your event
  • Conditions
    • Your conditions
  • Actions
    • Set point1 = (Position of (Triggering unit))
    • Set real1 = 10000.00
    • Custom script: set bj_wantDestroyGroup = true
    • Unit Group - Pick every unit in (Units within 1500.00 of point1) and do (Actions)
      • Loop - Actions
        • Set point2 = (Position of (Picked unit))
        • Set real2 = (Distance between point1 and point2)
        • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
          • If - Conditions
            • real2 Less than real1
          • Then - Actions
            • -------- We have found our closest unit --------
            • Set Unit1 = (Picked unit)
            • Set real1 = real2
          • Else - Actions
        • Custom script: call RemoveLocation(udg_point2)
    • Custom script: call RemoveLocation(udg_point1)
    • -------- Closest unit to point1 is Unit1 --------

point1 and point2 are point variables, real1 and real2 real variables and unit1 is unit variable.

You can tweak it a bit by adding conditions for unit group and increasing/decreasing the range.

I don't get why is real1 10,000. Since you pick units in 1500 range, the ITE always returns true so the first picked unit is sorted.

 

[Ceday]

Yeah that was probably a mistake, it should be pick every unit within real1 range.

 

[Vinz]

That wouldn't do either since units are most not likely in the max range, it will always return true too.

 

[Ceday]

what? You cant know that, maybe there is no unit around in 9000 range and nearest unit in 9500 range?

 

[Nichilus]

real1 is just some random high number. It's meaning is in the sorting of units. The first unit picked in the unit group changes that number and any other unit which is closer will also change it. In the end, you end up with the closest unit.

e.g.
real1 = 10 000
1st picked unit => real2 (range) = 400 ... is real2 less than real1? Yes => set real1 to 400
now it compares if other units are closer than 400. If yes, it changes real1 to that new value and saves the unit.

 

[Vinz]

Ow nice logic you got. I was thinking that way too, but my brain somehow filtered out the condition in the ITE. Nice!

 

[Maker]

One thing to add to the trigger is to set Unit1 to null before the unit group loop, and then check that the variable is not null before trying to attack it.

 

[KONSTANTIN]

hi all ! i gotta be honnest i stayed up all night trying to figure this out, and i somehow did, but still i cant manage to get it all . so i did it like this in my description, didnt test yet cuz i didnt still wrote Ai for the comp, but can u tell me at least am i going in the right direction. blue player is human, and pink is ai..

 

[Daffa]

Please don't hijacked others thread, make your own thread.

 

[Vinz]

Lololol.

 

[PotatoMeister]

Has anyone made a demo map where this actually work?