std::vector errors

[Cameleon]

Hi, I'm wondering if anyone call help me I'm trying to use bullet in my honours year project and I'm getting the following errors with this code.

class Cell
{
private:
.....loads of irrelevent stuff
btCollisionObject colObj;
}

class Map
{
...more irrelevence
vector<vector<Cell>> mapSpace; //so I can have a 2D Plane that can expand
}

vector(694) : error C2719: '_Val': formal parameter with __declspec(align('16')) won't be aligned
C:\Program Files (x86)\Microsoft Visual Studio 8\VC\include\vector(1076) : see reference to class template instantiation 'std::vector<_Ty>' being compiled
with
[
_Ty=Cell
]
..\Map.h(174) : see reference to class template instantiation 'std::vector<_Ty>' being compiled
1> with
1> [
1> _Ty=std::vector<Cell>
1> ]

I know the error is with the class btCollisionObject being defined as: ATTRIBUTE_ALIGNED16(class) but I don't know how to fix it. I don't want to go in and start hacking up code that works incase I cause serious damage and forget what I changed. So any help?

[Erwin Coumans]

Bullet provides btAlignedObjectArray, which has a very similar interface/usage to STL std::vector. It deals properly with alignment.

Hope this helps,
Erwin

[Soth]

There is an easy workaround to this problem but you have to change <vector> header.
As i recall the method that requires modification is

void resize(size_type _Newsize, _Ty _Val)

just change it to

void resize(size_type _Newsize, const _Ty& _Val)

and all should compile, at least it worked for me when i was writing my sse code.

Although maybe you should provide a custom allocator that uses aligned_alloc instead of new