I came back to this project and realised my mistakes (Importer is
a class for the C++ API, and we're using the C API).
So I fixed all my errors, but now I get an access violation.
As far as I can tell, it seems to be an issue with
`aiGetMaterialTexture`. It is meant to return an aiString with a
filename (default value of "$texture.png"), I believe. But I get:
aiString(13, x"67 6C 61 73 73 5F 64 69 66 2E 70 6E 67 00 FF FF FF
... FF"c)
[shortened for brevity]
I'm meant to add this on to a directory string so I can load an
image, but obviously this wouldn't work.
I thought it might be a problem with converting from D-strings to
C-strings. I sent a string to `aiImportFile` as
`toStringz(path)`.
I tested this with some writeln debugging:
```
auto temp = path.toStringz;
writeln("toStringz: ", temp);
writeln("string: ", temp.to!string);
```
This gave:
toStringz: 4770B6
string: Models/Nanosuit/nanosuit.obj
So maybe this is a problem with using aiStrings? I'm quite
confused. Sorry if this is more of an assimp question than a D
question, but I don't know if it's me misusing D language
features or not.
