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Call .cs script function from .mm code [SOLVED]

by Brian Szatkowski · in iTorque 2D · 05/16/2011 (6:18 pm) · 6 replies

Hi All;

I am trying to figure out a way to call a .cs script function (not associated with a SimObject) from within a class method that resides in a .mm file. After some reading, it seemed as if the "Con::execute" method is what I am after, but I am running into roadblocks trying to implement that solution.

Can anyone verify if this is the correct strategy and, if so, post a snippet on how to properly use this approach? Otherwise, if this is not the correct solution, and you know of a better/proper way, could you please post that?

So, basically, I need an action (such as a native XCode GUI button press) that takes place in Objective-C to make a call to a function that exists in one of my .cs script files.

Thank you in advance for all of the helpful suggestions/solutions.


Find the solution HERE.
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Community Manager Michael Perry
ZombieShortbus
#1
05/16/2011 (6:40 pm)
@Brian - What roadblocks are you running into? It's hard to help if we don't know what is happening. Can you post your C++ code, your TS function and any errors you get? Con::executef is the way to go, but we need to see how you are implementing it.

Torque 3D Owner Brian Szatkowski
#2
05/16/2011 (7:03 pm)
Hi Michael;

Sorry for the vagueness. The code is rudimentary right now as I just want to get it working before I start adding in details.

In my .cs file

function helper()
{
     echo ("Showing help...");
}

...and in my .mm file (inside a class call)

Con::executef(????) // Herein lies my confusion

1.) I'm not sure what to put inside the call to get "helper()" to...well, get called. The examples I found all had some named SimObject that had a method associated with it as the first argument. Since my function is standalone, I'm not sure how the syntax works.

2.) Even though I do not have the correct syntax implemented yet, XCode gives an error stating "No matching function for call to executef".


Thoughts? Glaring oversights on my part?


Thanks!

Torque Owner Richard Skala
Pixel Vandals Inc.
#3
05/17/2011 (2:15 am)
I'm guessing you just need to include the file that has the function:

#include "console/console.h"


Torque 3D Owner Brian Szatkowski
#4
05/17/2011 (4:51 am)
Hi Michael & Richard;

Thank you both for your input.

Richard, although including "console.h" was not necessary (as it is already included earlier in the native Torque engine code), looking at that file did provide the reference to the syntax that I needed to make this happen. So, for that, I thank you.

For others interested, here is the correct solution:

In my .cs file...

function helper()
{
    echo ("Showing help...");
}

...and in my .mm file:

...

const char* callMe[] = {"nameOfFunction"}
Con::execute(1, callMe);

...

Where:

  • the array, callMe[], holds the name of the function/method to call along with any arguments being passed (none in my case)
  • the call to Con::execute(1, arrayName) holds the number of indices/entries in the aforementioned array, followed by the array name

Thanks!

Community Manager Michael Perry
ZombieShortbus
#5
05/17/2011 (6:13 am)
You can actually reduce the code to one line:

Con::executef( 1, "nameOfFunction" );

If you want to start passing parameters:

int myVariable = 3;
Con::executef( 2, "oniPhoneChangeOrientation", Con::getIntArg(myVariable) );

Torque 3D Owner Brian Szatkowski
#6
05/17/2011 (6:38 am)
Nice! Thanks for the elaboration and simplification, Michael.