Difference between trigger add action and call function

[Cokemonkey11]

Between this:

call TriggerAddAction(gg_trg_movingCircleFast, function Trig_dummyCenter_Actions)

and this:

call function(Trig_dummyCenter_Actions

What is the difference?

 

[Flare]

You would have to manually call the action func everytime the event was fired (which wouldn't be possible, unless you did it in the condition func), whereas TriggerAddAction will automatically call the action func when the event fires, and the condition(s) return true

 

[Cokemonkey11]

so a function with an event will always use addaction?

 

[Flare]

Ahm... can you post an example of what you mean? I don't quite follow what you've just said

 

[Cokemonkey11]

An event function. Like this one.

function InitTrig_movingCircleFast takes nothing returns nothing
    set gg_trg_movingCircleFast = CreateTrigger()
    call TriggerRegisterTimerEvent(gg_trg_movingCircleFast,2,false)
    call TriggerAddAction(gg_trg_movingCircleFast, function Trig_dummyCenter_Actions)
endfunction

will always use TriggerAddAction and never call function because of the reason you gave

true or false?

 

[Flare]

When that event fires (i.e. after 2 seconds of game-time), Trig_dummyCenter_Actions will fire, since you have associated the action func with that trigger using TriggerAddAction. The action func is associated ONCE, but that association is maintained throughout the game, unless you do TriggerRemoveAction

In a nutshell (of sorts)
TriggerAddAction (trig, actionFunc)
Automatically called whenever the event is fired (e.g. EVENT_PLAYER_UNIT_SPELL_EFFECT fires when someone casts a spell)

call actionFunc ()
Must be called 'manually' when the event fires - condition function would be the only place to call it for things to work as intended

 

[Cokemonkey11]

I get that, but I'm talking about when you said this.

"You would have to manually call the action func everytime the event was fired (which wouldn't be possible, unless you did it in the condition func), whereas TriggerAddAction will automatically call the action func when the event fires, and the condition(s) return true"

Does this mean I would never use call func in the same function as a TriggerRegister?

 

[Flare]

Does this mean I would never use call func in the same function as a TriggerRegister?

As in:

function InitFunc takes nothing returns nothing
local trigger t = CreateTrigger ()
call TriggerRegisterAnyUnitEventBJ (...)
call ActionFunc ()
endfunction

If so, then no, you would never call ActionFunc when registering the event (since InitFunc is only run once, ActionFunc would only run once as a result)

 

[Cokemonkey11]

Perfect&Exactly what I was looking for thank you

"[You must spread some reputation around before giving some to Flare again.]"

 

[quraji]

Are you referring to the function where you create the trigger an 'event function'? So you know, triggers may be created anywhere, and events may be registered to a trigger anywhere, and actions/conditions can be added to a trigger anywhere. You do not need a special function to do this. The default trigger function is usually where it is done as most triggers you will create at map init.

Example (rough, I'm not at my home computer):

function triggertwoaction takes nothing returns nothing
    //stuff
endfunction

function triggeroneaction takes nothing returns nothing // trigger one's action
    local trigger t = CreateTrigger()
    
    call TriggerRegisterEvent(t, ...)
    call TriggerAddAction(t, function triggertwoaction)

    // other stuff

endfunction

function Init takes nothing returns nothing  //create, initialize, register trigger one
    local trigger t = CreateTrigger()

    call TriggerRegisterEvent(t, ...)
    call TriggerAddAction(t, function triggeroneaction) // assign this function as an action to trigger t
    
    call triggeroneaction() // this is a function, not just a trigger action, and thus can be called as normal

endfunction

This example is just to show that triggers can be created and worked with anywhere you can call other functions. They need no special function to themselves.

 

[Cokemonkey11]

I understand how that works, sorry I didn't specify - meant only in a simple trigger with 1 event function like mine.