[vJASS] How do I wait for condition

[FlameSoul]

I'm writing a function inside a scope, and at the middle of the function I order the unit to attack and I need to wait until the unit reachs the target and attacks it. Can this be done?? How??

Consider that I am quite new to this, so I'm getting used to the language and the way it works (I also am new to common JASS).

 

[Catch_ya]

There is this GUI action:

• Wait until (((Playable map area) contains (Triggering unit)) Equal to True), checking every 1.00 seconds

Its 2 lines under wait in the GUI actions

 

[FlameSoul]

Yeah, I know that function, but I want to put it in the middle of a vJASS code, so I don't think that helps me a lot.
If possible, I would like to put a function or something in the middle of the code that is wait until condition "attack", then continue with the rest of the code. It's like when you place delays, wait for some time and then continue.
Maybe if I found how that function is called in JASS I could use it.

I've tried something like this

        loop // loop until condition is met
            exitwhen (GetAttackedUnitBJ()==Target and GetAttacker()==Caster)==TRUE
        endloop

maybe if it could go inside a function, something like this

    private function WaitForCondition takes conditionfunc Cond returns nothing
        loop // loop until condition is met
            exitwhen Cond==TRUE
        endloop
    endfunction

and evaluate continously until condition is met, and when condition is met exit the loop. So, I would put conditions looking for specified attacker and attacking unit and when they are met, it means I can continue with the spell.

 

[Catch_ya]

Sure you can do that e.g

function set takes nothing returns nothing
local unit array u
local integer i = 1
set u[1] = gg_trg_Hpal_0000
set u[2] = gg_trg_Hfoo_0001
set u[3] = gg_trg_Hrif_0002
set u[4] = gg_trg_Hsor_0003
/////////////////////////////
loop
exitwhen GetUnitTypeId(udg_u[i]) == 'hfoo'
set i = i + 1
endfunction

This loops untill the unit type is footman is it like this you mean ??

 

[YourNameHere]

^ It would cause an infinite loop if there is no unit being 'hfoo'

 

[Catch_ya]

True but couldnt you do like this then..

exitwhen GetUnitTypeId(udg_u[i]) == 'hfoo' or i == 4 // 4 is the number of units you have indexed

 

[Mooglefrooglian]

I would not recommend doing it that way. You need a wait.
To simulate the GUi action (actually, it's the same as the gui function)

loop
    exitwhen (putaconditionhere)
    call PolledWait(0.1)
endloop

 

[FlameSoul]

I think I'm not making myself clear. I've tried this, but it didn't work (or at least, it seemed that it didn't work)

    private function WaitForHit takes unit Caster, unit Target returns nothing
        loop // loop until condition is met
            exitwhen (GetAttackedUnitBJ()==Target and GetAttacker()==Caster)
            call PolledWait(0.1)
        endloop
    endfunction

Hope this makes it clearer on what I'm trying to do.

 

[Mooglefrooglian]

You cant do that. Those functions only work when you have a trigger is fired on an attacked event. You're going to have to use some sort of struct or hashtable.

 

[Dreadnought[dA]]

Perhaps you should check out a damage detection system, there are several of them that work in different ways.

 

[FlameSoul]

Come on! I think there is a better way for detecting an attack than this

    private function WaitForHit takes unit Caster, unit Target returns nothing
        loop // loop until condition is met
            exitwhen IsUnitInRange(Caster,Target,120)
            call PolledWait(0.1)
        endloop
    endfunction

and almost as short as this.
I fail to believe there isn't a simple way to detect damage and continue executing the main trigger function.

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Also I would like to know: triggers are not like functions, if you execute them, they do not return to the point they were called from, am I wrong??