Find minimal value?

01-31-2010, 05:43 PM	#1
rednek	Let we say I have 10 integer variables, each of them has random number between 0 and 100. Now, how can I find which one of them has lowest value? Min function World Editor has can compare only two variables (as far as I know) Or I'm doing this, because I'm trying to find closest unit to a certain point. If there's any clear way to find which one is it, well, I'm all ears :)

01-31-2010, 05:49 PM	#2
Kueken	For the first one, use a sort algorithm, or simply loop though the numbers and get the lowest one by multiple comparisons For the second one, pick all units and compare their distances like mentioned

01-31-2010, 06:24 PM	#3
rednek	Thanks for the reply, could you be more specific please? The number of variables is unknown to me, might be more than 10. I can't imagine how to sucesfully compare them, without having it to be ridiculously long. What is this sorting algoritm you speak of, and how do I accomplish it?

01-31-2010, 06:48 PM

TriggerHappy

Should output the lowest #. Not tested (or syntax checked).

JASS:

local integer i = 1
local integer lowest = yourArray[0]
local integer index  = 0
loop
    exitwhen i > 10
    if (yourArray[i] < lowest) then
        set lowest = yourArray[i]
        set index  = i
    endif
    set i = i + 1
endloop
call BJDebugMsg("yourArray["+I2S(index)+"] has the lowest value, " + I2S(lowest))

01-31-2010, 06:53 PM

moyack

JASS:

globals
   integer array A
   integer Size = 9 // for values in the array with index between 0 - 9
endglobals

function Min10 takes nothing returns integer
   local integer i = 0
   local integer r = A[0]
   local integer a = 0
   loop
      exitwhen i == Size
      set a = Min(A[i], A[i+1])
      if a < r then
         set r = a
      endif
      set i = i+1
   endloop
   return r
endfunction

01-31-2010, 06:56 PM	#6
Anitarf	If you want to find the nearest unit to a point, PruneGroup can help.

01-31-2010, 07:04 PM

Michael Peppers

Quote:

Originally Posted by Anitarf

If you want to find the nearest unit to a point, PruneGroup can help.

...or my FindUnits =P

01-31-2010, 07:53 PM

Themerion

Quote:

I'm trying to find closest unit to a certain point.

Here's an outline for how it's done. It's made to be simple, read comment on (meaningless? :P) optimizations below.

Trigger:

Set CertainPoint = (Center of (Playable Map Area))

Set TempReal = 500

Set TempUnit = No Unit

Unit Group - Pick All units in 500 from CertainPoint

Loop

Conditions

Distance Between (Certain Point) and (Position of (Picked Unit)) less than TempReal

Actions

Set TempUnit = (Picked Unit)

Set TempReal = Distance Between (Certain Point) and (Position of (Picked Unit))

if TempUnit not equal to No Unit

--- Voila, the closest unit was TempUnit ---

Once you understand this outline, you should probably optimize it by storing "Distance Between..." as a variable (so you won't have to check multiple times for the same unit). You should also take care of the point-leaks, and the unit group leak.

01-31-2010, 10:06 PM	#9
rednek	Whoa, thanks for all the replies, I went with the moyack's one for finding lowest value, and it works perfectly (thanks man) After that, Themerion's trigger was clear as day to me. I'm glad you posted it :P So, yeah, thanks again ^^

02-01-2010, 01:06 PM

#10

Anitarf

Quote:

Originally Posted by rednek

Whoa, thanks for all the replies, I went with the moyack's one for finding lowest value, and it works perfectly

It does? It doesn't even compile for me.

02-01-2010, 01:37 PM

#11

moyack

Quote:

Originally Posted by Anitarf

It does? It doesn't even compile for me.

Man, you suck at coding.... :P

02-01-2010, 05:05 PM

#12

rednek

Quote:

Originally Posted by Anitarf

It does? It doesn't even compile for me.

Perhaps, I didn't exactly copy'n'paste it, just saw how it's done and then did it by memory.