Loop & structs

04-15-2007, 08:21 AM	#1
MaD[Lion]	Would like to know how do i loop over a struct type. (all structs of same type, since they are arrays) How do i get the max pointer (array index), and how do i know if a struct exist or is destroyed. Or do i have to create my own arrays to do this...

04-15-2007, 01:43 PM

Vexorian

no direct way.

but you can make your structs enum cooperative:

JASS:


// if return true then it destroys it after evaluating .
function interface booEnumFunction takes boo enumed returns boolean


struct boo

     static boo array active
     static integer activen=0

     private integer pos

     real t=2.0

     static method create takes nothing returns boo
      local boo b=boo.allocate()

          set b.pos = boo.activen
          set boo.active[boo.activen]=b
          set boo.activen = boo.activen+1
      return b
     endmethod

     private method onDestroy takes nothing returns nothing
      local boo last = boo.active[boo.activen-1]
         set boo.active[ this.pos ] = last
         set last.pos = this.pos
         set boo.activen=boo.activen-1
     endmethod

     static method iterate takes booEnumFunction it returns nothing
      local integer i=0
         loop
             exitwhen i>=boo.activen
             if (it.evaluate(boo.active[i] )) then
                 call boo.active[i].destroy()
             else
                 set i=i+1
             endif
         endloop
     endmethod
     
endstruct


function ExampleIt takes boo enumed returns boolean
 // if x==0 then destroy it.
    if (enumed.x==0.) then
        return true
    endif
 return false
endfunction


function TestExampleIt takes nothing returns nothing
    call boo.iterate( booEnumFunction.ExampleIt )
endfunction

04-15-2007, 04:10 PM	#3
MaD[Lion]	hm... seems like i have to use my custom OO method... But thnx for help