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Quick bit of code assistance please

by Ronald J Nelson · in Torque Game Engine Advanced · 05/12/2008 (6:26 pm) · 6 replies

I am using this to provide a list of materials for my vehicles. For some reason the moment I call it it crashes the game.

void ShapeBase::generateMaterialList()
{
	TSMaterialList* pMatList = mShapeInstance->getMaterialList();
	Con::errorf("List Size: %d", pMatList->mMaterialNames.size());
	/*
	for (S32 j = 0; j < pMatList->mMaterialNames.size(); j++)
	{
		const char* pName = pMatList->mMaterialNames[j];
		if(pName != NULL)
		{
			char buff1[256];
			
			dSprintf(buff1,sizeof(buff1),"%s" ,pName);
			Con::executef(mDataBlock,4,"getMaterialList",scriptThis(), getIdString(), buff1);
		}
	}
	*/
}
ConsoleMethod( ShapeBase, generateMaterialList, void, 2, 2, "List all materials for object")
{
	object->generateMaterialList();
}

For pity's sake it isn't even doing anything besides showing the value in the console. A little help here would be really nice.
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Associate Phillip O'Shea
Violent Tulip
#1
05/12/2008 (6:29 pm)
My guess is that pMatList doesn't exist? Try putting something like this in there:

...
 
TSMaterialList* pMatList = mShapeInstance->getMaterialList();
if (!pMatList)
{
    Con::errorf("ShapeBase::generateMaterialList - Cannot locate material list");
    return;
}
 
...

Torque Owner Ronald J Nelson
Code Hammer Games
#2
05/12/2008 (7:47 pm)
Thank you Phillip. You hit the nail on the head. Now I just need to figure out why I do not have it.

Torque Owner Ronald J Nelson
Code Hammer Games
#3
05/12/2008 (10:17 pm)
While Phillip was correct in what was causing the crash I cannot understand how it is possible for the vehicle to not even have a materialList in the first place. It should have at the minimum given me the name of the base materials that were exported with the model.

Can someone enlighten me?

Torque 3D Owner Peter Simard
Default Studio Name
#4
05/12/2008 (10:31 pm)
When are you calling this function? Make sure the vehicle materials are actually loaded.

Torque Owner Ronald J Nelson
Code Hammer Games
#5
05/12/2008 (10:38 pm)
I set up a quick echo in my createPlayer function that gives me the ID of the vehicle. Based upon that ID I call this function in the console window. This technique has serve me well in the past.

In this case, I am trying to avoid creating materials in script prior to loading the vehicle. What I am trying to get is the base material name that was exported with the DTS file itself. The method I am using above worked fine before in some other code I was working on, but not now. I also have see the same technique used in other resources.

So, what I would like to see is it provide me with, for example:

base
window
detail

Since those materials were exported with the DTS file, they should be readable without creating a scripted material.

Torque Owner Ronald J Nelson
Code Hammer Games
#6
05/12/2008 (11:02 pm)
Nevermind. I figured it out on my own. The code that works is as follows:

TSShape* tsShape = mShapeInstance->getShape();
	TSMaterialList* pMatList = tsShape->materialList;

Then the rest from above.