Mui and local variables

[Tar-Quaeron]

Hello,
I just recently learned Jass (i'm still a noob at it) and I have a few questions on Mui in Jass. So let's start from the premiss that nothing truly happens at the same time in Wc3, if you go into micro or 10^-1 micro seconds (the scale of a computer). From what I read local variables assume different values for each instance, for each triggering, of a function. But the only way to set the local variables is by using stuff like GetTriggerUnit(), GetAttacker(), GetAttackedUnit(), etc. Now apparently only GetTriggerUnit is actually a local variable? Does this mean that it is possible to get stuff mixed up if a second instance of the trigger is triggered before the 2nd line of the first instance is read and applied?

For example if we have this function that is triggered by a UNIT_PLAYER_EVENT_REGISTER_ATTACK (I can't be bothered to go look up the actual constant):

function haha takes nothing returns nothing
    local unit u
    if GetUnitId(GetAttacker()) == 'h00T'
        set u = GetAttackedUnitBJ()
    endif
endfunction

It is possible that the same trigger is triggered before the first instance of the trigger has the time to get GetAttackedUnit into before GetAttackedUnit is changed according to the second instance?

And the ingersA and B that you also have in GUI, are those local or global variables?

Thx in advance,

 

[dracolich]

all triggers perfomed one by one, theres no simultaneously triggers at all.
And afaik, A and B its globals

 

[PurgeandFire]

GetTriggerUnit() is local to the function. It basically won't be overwritten. So say you do something like this:

call BJDebugMsg(GetUnitName(GetTriggerUnit()))
call TriggerSleepAction(5)
call BJDebugMsg(GetUnitName(GetTriggerUnit()))

And say the event is ran once. Then it is ran again immediately afterward. If the first unit was a priest and the second a knight, it would properly show the values, even though there is a wait in there. Basically, it would display:
priest
knight
... 5 seconds later ...
priest
knight

Without any problems.

(Integer A) and (Integer B) are global variables:

bj_forLoopAIndex
bj_forLoopAIndexEnd
bj_forLoopBIndex
bj_forLoopBIndexEnd

Looping from 1-10 in GUI would set bj_forLoopAIndex to 1, and bj_forLoopAIndexEnd to 10. bj_forLoopAIndex represents the (Integer A) part. Same thing for (Integer B).

 

[Tar-Quaeron]

First, so you couldn't have two instances of the same trigger using integer A and B at the same time because they'd affect each other?

Yes, I understand that GetTriggerUnit() is a local, but my question was about the others: well, not GetAttackedUnitBJ() as that simply calls GetTriggerUnit() but GetLastCreatedUnit() (does that refer to the function specifically or to all functions in your script running at the same time (ok, I understand your post, dracolich) i.e. there'd be triggers paused with TriggerSleepAction()), GetAttacker(), GetSpellTargetUnit(), well basically all these natives that return units. Well, I suppose it wouldn't be such a problem if they weren't locals as you could just set a local to the unit they return.

(3rd question) what about queued triggers then? So if a trigger "triggers" while the action function (CallTriggerAddFunction()) of another is still running, wc3 doesn't change the unit returned by GetAttacker() for example?

 

[Sindree]

since the value gets saved into the local variable it will handle as the local variable as that is the one ur calling ;/

for example

local integer i = udg_integer

call PolledWait(5)

callBJDebugMsg(I2S(i))

will return the value udg_integer was the moment u set it even tho it was changed afterwards. Same applys for setting for example GetAttackedUnitBJ(), the GetAttackedUnitBJ() might change but the variable will be the same untill u null it