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Can't access Dynamic Fields by use of getObject

by Marge Van Der Straaten · in Torque Game Builder · 01/29/2012 (7:18 am) · 3 replies

Hey,

I've encountered a little problem trying to access and manipulate dynamic fields of objects in a SimSet.

I've initialised the object and added it to the simset like so:

%WarPlane = new t2dStaticSprite()
{
   imageMap = "ImpImageMap";
   class = "Imperial";
   layer = 0;
   size = "1.899 1.899";
   Position = (-80)SPC(-30 + %i*5);
   
   ID = "Board"; //set object's location ID if not on trackBoard.
   cameFrom = "Board"; //set WarPlane's came from variable
};

warPlaneSet.add(%WarPlane); //add to the related SimSet

The problem is when trying to access the dynamic fields using the getObject():

if(warPlaneSet.getObject(%index).ID == null)
{
   echo("Can't access Warplane ID");
}
else
{
   echo("Warplane is on the" SPC warPlaneSet.getObject(%index).ID);
}

And every single time, the console prints out "Can't access Warplane ID".

I've tried adding the fields in another way like so (just in case it got muddled up somehow):

%WarPlane = new t2dStaticSprite()
{
   imageMap = "ImpImageMap";
   class = "Imperial";
   layer = 0;
   size = "1.899 1.899";
   Position = (-80)SPC(-30 + %i*5);
};

%Warplane.ID = "Board"; //set object's location ID if not on trackBoard.
%Warplane.cameFrom = "Board"; //set WarPlane's came from variable

warPlaneSet.add(%WarPlane); //add to the related SimSet

But still, it returned "Can't access Warplane ID".

Can anyone please enlighten me what I did wrong?

Thanks in advance!
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Torque 3D Owner The Guv
subunderground
#1
01/29/2012 (8:34 am)
Are there any compile errors ? I haven't used TGB for a while, I believe that "null" isn't a keyword. So 
if(warPlaneSet.getObject(%index).ID == null)
TGB should complain a compile error. Try something like

if(!isObject(warPlaneSet.getObject(%index).ID))

Employee Michael Perry
ZombieShortbus
#2
01/29/2012 (8:36 am)
What is the result when you echo this:

echo(warPlaneSet.getObject(%index).ID);

Additionally, when dealing with strings "null" is not recommended. You should check like this:

if(warPlaneSet.getObject(%index.ID $= "")

Torque Owner Marge Van Der Straaten
#3
01/29/2012 (9:19 am)
@The_Guv:

Thanks for pointing out my mistake in assuming "null" is a keyword!

I tinkered around with the isObject and it only works on full objects, not dynamic fields, so that's that.

@Michael_Perry:

The result is "Board", just as it was initialised beforehand.

I facepalmed at my incredible ability of making things out to be more complex than they should be.

The testing code that now works is below:

function warPlaneSet(%index)
{
   if(!isObject(warPlaneSet.getObject(%index))) 
   {
      echo("Can't access Warplane");
   }
   else
   {
      echo(warPlaneSet.getObject(%index).getPosition());
      echo("Warplane is on the" SPC warPlaneSet.getObject(%index).ID);
   }
}

Thanks so much!