Fast function pointers

02-23-2008, 03:36 AM

I'm trying to find a fast way to do:

JASS:

globals
  code func_b
endglobals
function callB takes nothing returns nothing
  call func_b
endfunction

function B takes nothing returns nothing
  call DisplayTextToForce(GetPlayersAll(), "B")
endfunction

function regB takes nothing returns nothing
  set func_b = function B
endfunction

I know I can create a trigger, add an action, etc, but apparently that is a very expensive operation for something so simple.

Assuming I have a code variable, what is the fastest way to call it? NewGen gives no errors if I put "call func_b"... but nothing happens when it is executed. I thought of using ForForce or ForGroup but I don't know how expensive they are.

I looked at all the functions that take type code ( http://jass.sourceforge.net/doc/api/...pes-code.shtml ) but I don't actually know what many of them do.

02-23-2008, 04:57 AM	#2
darkwulfv	Wrong forum, you want Triggers and Scripts. Also, I don't really get what you're trying to do.

02-23-2008, 01:54 PM

Pyrogasm

JASS:

globals
  code func_b
  timer T = CreateTimer()
endglobals
function callB takes nothing returns nothing
  call TimerStart(T, 0.00, false, func_b)
endfunction

function B takes nothing returns nothing
  call DisplayTextToForce(GetPlayersAll(), "B")
endfunction

function regB takes nothing returns nothing
  set func_b = function B
endfunction

02-23-2008, 02:13 PM	#4
Vexorian	Pyrogasm has just posted the lamest possible way to do it. Just use TriggerEvaluate, it is the fastest way, it is not that expensive either, and when something is the only way, you really have no choice, do you?

02-23-2008, 02:14 PM

Themerion

If you use vJASS, I think struct methods might be a good approach...

JASS:

// This is vJASS, requires jassnewgenpack

globals
    myInterface caller
endglobals

interface myInterface
    method theActions takes nothing returns nothing
endinterface

struct myStructA extends myInterface
    method theActions takes nothing returns nothing
        call DisplayTextToForce(GetPlayersAll(), "B")
    endmethod
endstruct

function callB takes nothing returns nothing
    call caller.theActions()
endfunction

function regB takes nothing returns nothing
    set caller=myStructA.create()
endfunction

02-23-2008, 03:06 PM

Strilanc

Quote:

Originally Posted by Themerion

If you use vJASS, I think struct methods might be a good approach...

JASS:

// This is vJASS, requires jassnewgenpack

globals
    myInterface caller
endglobals

interface myInterface
    method theActions takes nothing returns nothing
endinterface

struct myStructA extends myInterface
    method theActions takes nothing returns nothing
        call DisplayTextToForce(GetPlayersAll(), "B")
    endmethod
endstruct

function callB takes nothing returns nothing
    call caller.theActions()
endfunction

function regB takes nothing returns nothing
    set caller=myStructA.create()
endfunction

If you look at the script for that you might be pleasantly surprised to see TriggerEvaluate, lol.

Quote:

Originally Posted by Vexorian

Pyrogasm has just posted the lamest possible way to do it.

Just use TriggerEvaluate, it is the fastest way, it is not that expensive either, and when something is the only way, you really have no choice, do you?

Understood. (How expensive is it, compared to a normal call?)

02-23-2008, 04:00 PM

Vexorian

Quote:

Understood. (How expensive is it, compared to a normal call?)

No idea.

While a function call gets slower the more functions you declare in a map, TriggerEvaluate, doesn't.

02-23-2008, 07:02 PM

Toadcop

Quote:

While a function call gets slower the more functions you declare in a map, TriggerEvaluate, doesn't.

really ? =) prove ?

02-23-2008, 08:36 PM	#9
Vexorian	Your very tests for the proportion between them TriggerEvaluate() / function call is 30.0 when there are few functions and 2.54 when there are a lot of functions like in the caster system map.

02-23-2008, 09:45 PM

#10

Pyrogasm

Quote:

Originally Posted by Vexorian

Pyrogasm has just posted the lamest possible way to do it.

I try.