Structs

[AdamGriffith]

Is their a way to check wether a struct array is in use? So I can reuse the empty ones.

 

[Vexorian]

Define 'struct array' and 'in use'

 

[Uberplayer]

By 'struct array' he probably means:

struct Data
endstruct

globals
    Data array Data_ar
endglobals

And with 'in use' he means:

function DiiDii...
    set Data_ar[x] = Data.create()
endfunction

 

[Romek]

Do a Loop, checking if Data[loopinteger] is equal to null. If it is, then it's not in use and you can do w/e you want with it xD

 

[Uberplayer]

How can a struct be null?

 

[T.s.e]

Because structs are basically integers.

 

[Flare]

If it's equal to 0 IIRC

structs use arrays which have a 8191 values limit, and we cannot use index 0 which is null for structs, so there is an 8190 instances limit

 

[Uberplayer]

>Because structs are basically integers.
And integer cannot be null.

 

[T.s.e]

Eh? Integers can be 0..

 

[Uberplayer]

0 != null.

 

[chobibo]

0 is not null. Also you don't need to do checks as long as you properly destroy your structs. Each struct already has it's own allocator and de-allocator, you just have to use them properly.

 

[AdamGriffith]

Wow i'm so lost. xD

Say I have this:

library test

struct teststruct
    real distance = 0.00
endstruct

globals
    private integer counter = 0
    private teststruct array data
endglobals

private function Test takes nothing returns nothing
//    ...
//    ...
//    ...
    call data[1].destroy()
endfunction

private function Actions takes nothing returns nothing
    local teststruct a
    set counter = counter + 1
    set data[counter] = teststruct.create()
    set a.distance = 2000.00
//    ...
//    ...
//    ...
endfunction

//===========================================================================
function InitTrig_Test takes nothing returns nothing
    set gg_trg_Test = CreateTrigger(  )
    call TriggerAddAction( gg_trg_Test, function Actions )
endfunction

endlibrary

So after some stuff data[1] gets destroyed.
Now how do I detect that it is empty so it can be re-useD?

 

[Uberplayer]

Me:

Usually when I want to check if struct exists and is in use, I compare it to 0. And after I've destroyed a struct I set it's value to 0.

 

[AdamGriffith]

How can a destroyed struct have a value =S

 

[Uberplayer]

It's an integer. It's nothing magical.

 

[AdamGriffith]

So does a destroyed struct automatically have 0 as it's value? Or do I have to set it that way?

 

[Uberplayer]

As far as I know, no. So set it yourself.

 

[Flare]

You could try 'call BJDebugMsg (I2S (data))' or whatever your struct variable was called in your function after destroying your struct. I've compared destroyed structs to 0 a while ago, and I don't think I had any problems

 

[AdamGriffith]

library Initialization

struct InitializationData
    unit footy = null
endstruct

globals
    integer counter = 0
    InitializationData array data
endglobals

function Sorting takes nothing returns integer
    local integer i = 1
    local integer value = 0
    loop
        exitwhen i &gt; 1200 or data<i> == null
        set i = i + 1
    endloop
    set value = i
    return value
endfunction

function Trig_Initialization_Actions takes nothing returns nothing
    local InitializationData a
    set counter = Sorting()
    call DisplayTextToForce(GetPlayersAll(), I2S(counter))
    set data[counter] = InitializationData.create()
    set a = data[counter]
    call CreateNUnitsAtLoc( 1, &#039;hfoo&#039;, GetTriggerPlayer(), GetRectCenter(GetPlayableMapRect()), bj_UNIT_FACING )
    set a.footy = GetLastCreatedUnit()
    call PolledWait(10.00)
    call RemoveUnit(a.footy)
    call a.destroy()
    set a = 0
endfunction

//===========================================================================
function InitTrig_Initialization takes nothing returns nothing
    set gg_trg_Initialization = CreateTrigger(  )
    call TriggerRegisterPlayerEventEndCinematic( gg_trg_Initialization, Player(0) )
    call TriggerAddAction( gg_trg_Initialization, function Trig_Initialization_Actions )
endfunction

endlibrary</i>

I have that, but it doesn't seem to re-used the structs.
If I let it create 5 units then wait for them to be destroyed, and then create some more, it starts from 6 =S

 

[chobibo]

call DisplayTextToForce(GetPlayersAll(), I2S(a))

You dont need the Sorting function, directly print the struct a, thats your re-used struct.