How to pass parameters to code variable in TimerStart() method?

[katya18]

Hello guys, the question is pretty simple

Somewhere in the function I start the timer via
call TimerStart(myTimer, interval, false, function Actions)

I want to pass parameters to Actions() function, like

call TimerStart(myTimer, interval, false, function Action(100, 500))

How to do that?

If I cannot pass parameters how to solve the problem?

 

[DracoL1ch]

use global variables / hashtables

 

[katya18]

Dont understand.
Lets make an example using pseudo-code:

I want to
call TimerStart(myTimer, interval, false, function Action(2))

and Actions() for example is

function Actions takes integer type returns nothing
// some other logic
if type == 1
Print("Hello")
if type == 2
Print("Goodbye")
if type == 3
Print(Fuck you")
endfunction

 

[TriggerHappy]

You cannot pass arguments to code paramaters.

globals
    integer type = 0
endglobals

set type = 2
call TimerStart(myTimer, interval, false, function Action)

function Actions takes nothing returns nothing
// some other logic
if type == 1
Print("Hello")
if type == 2
Print("Goodbye")
endfunction

This is where things like TimerUtils or hashtables come in to play. If you were using Lua or TypeScript you could simply use lambdas.

new Timer().start(interval, false, () => { actions(2) })

 

[katya18]

Reasonable, using global variable, though not familiar with this style of coding xD

The next question, related to this topic(passing parameter to code handler) will be:

I want to make command, using Enter input, in format CommandName_Number, for example music_5

I have function that checks user input and creates/shows dialog with buttons to chose

function CheckInput() {
    GetUserMessage()
    CheckMessage() / ParseString()
    CreateAndShowDialog()
}

I have initialization function, like

function Init() {
    //do some initialization
    createTrigger()
    TriggerRegisterEvent(dialog button was pressed)
    TriggerAddActions(... function Actions())
}

and some logic in Actions()

function Actions() {
    DoSomeLogic(number)
}

dialog and its buttons are allready stored in memory via global variables
So, here I want to pass parameter 5 from my command to the function Actions in that trigger to make it work in function DoSomeLogic()

How to do that?
If again I make global variable number, where I reset it after reading from user input? In the end of the function that creates Dialog Menu?

 

[Avahor]

As TH says, you could use handle ids from the objects to link values stored into a table - hashtable.

use the function GetHandleId() to get id from any object.
To get Timer handle use GetExpiredTimer()

So your code would looks like the following pseudocode

globals

 hashtable ht = null

endglobals

At map init functions you must initialize the hashtable

 set ht = InitHashtable()

then back to your function

function TestTimer ...
  local integer var = 1000
  local integer pos = 1
  local timer t =  new timer  //...check JASS libraries to choose a new timer function

  call SaveInteger(ht,GetHandleId(t), pos, var)

  call TimerStart(t, interval, false, function Action)


 set t = null

endfunction

then go to Action function

function Action ...

 local timer t = GetExpiredTimer()
 local integer pos = 1
 local integer var = LoadInteger(ht,GetHandleId(t),pos)

call DebugMsg(var)

/*

 actions to check if you need to pause or stop the timer

and nullyfy it

*/


endfunction

ofc all this in a very basic approach

 

[Uncle]

If you use Lua you don't have to deal with this crap.

function Example()
    local a = 1
    local b = 2
    local c = 3
    local t = CreateTimer()
    TimerStart(t, 1.00, false, function ()
        print(a, b, c)
        DestroyTimer(t)
    end)
end

The timer's function can be created right there on the spot and it will have reference to the local variables.

 

[Prometheus3375]

So your code would looks like the following pseudocode

At map init functions you must initialize the hashtable

Simply

globals
    constant hashtable Hash = InitHashtable()
endglobals