Is this a bug & does it happen in 1.69 too?

Neverwinter Nights 1 Enhanced Edition
1

I am currently doing some research and stumbled across something. I created a pair of structs -

struct uFirst
{
	int a;
	float b;
	string c;
};

struct uSecond
{
	struct uFirst d;
	int e;
};

And tested to make sure there were no syntax or other errors. The toolset compiler had no trouble with that. However whenever I try to use struct d in uSecond even to just assign another instance of struct uFirst to it I get an access violation error. Is this a bug? Is this behaviour limited to EE? In C/C#/C++ what I am trying to do is perfectly valid and also it must be processed when you use an NwN variable of type location too. Ideas?

TR

2

not a bug, missing functionality, EE didn’t change anything in this regard

3

This was a well-documented issue with NWN from the outset. Nested structs don’t work.

A possible workaround is to expand the fields in the nested struct, then assign field by field. Another technique is to convert the simple struct contents to a delimited string, though I don’t think that helps much unless there are a vast number of fields in the struct.

4

The silly thing is that I fixed one access violation error condition but then encountered a new one. Try this script

struct uFirst
{
    int a;
    float b;
    string c;
};

struct uSecond
{
    struct uFirst d;
    int e;
};

struct uFirst AFunction()
{
    struct uFirst uReturnMe;

    uReturnMe.a = 1;
    uReturnMe.b = 2.0f;
    uReturnMe.c = "Three";

    return uReturnMe;
}

int GetInt(struct uFirst uTest)
{
    return uTest.a;
}

void main()
{
    struct uFirst uVar = AFunction();
    struct uSecond uVar2;
    int iTest;

    uVar2.e = 5;
    uVar2.d = uVar;
   // iTest = GetInt(uVar2.d);
}

Saved/Compiled as is works fine. Now uncomment that last line and you’ll get an access violation. It appears you can put data into a nested struct, you just can’t get it out again.

TR

5

Yes, exactly that access violation was reported long ago.

6

I haven’t coded for NWN and my coding knowledge is from a very long time ago, but I have an idea. What if you put a pointer to uFirst inside uSecond, instead of an actual uFirst? You would have to create a uFirst variable dynamically and have the pointer point to it.

7

NWScript doesn’t have pointers. It only looks like C …