[Link] C++ Recast/Detour Wrapper

[Millow]

Hey there,
I was googling looking for a way to get Recast/Detour working, I stumbled upon this blog. Pretty interesting and the guy even posted source code for a wrapper for R/D in c++ and there is even an example of a navmesh for wow.
So I thought I'd share it with you as it is pretty recent and some of you might not have seen it, and for those, it might help !

Enjoy
Navigation Mesh path finding in MMORPG Bots - Blog

[miceiken]

Speaking of Recast&Detour I noticed there have been some updates to the WCell-Terrain project. I don't know if it's for 3.3.5a or 4.x though.
https://github.com/WCell/WCell/tree/.../WCell-Terrain

(This is C#)

[MaiN]

Wtf? Recast and Detour is already written in C...

[namreeb]

From what I saw he is abstracting away the internals of R+D to make the interface a bit more simplified.

[cvccbum]

Can anyone give an easy example like his, but in C#? I have been trying to create a wrapper for that native code but I am honestly awful at C++. If anyone has any pointers on a good article on wrapping unmanaged code for managed use please post it!

[DarkLinux]

its called google
http://www.mmowned.com/forums/world-...ml#post2031117

[cvccbum]

lol, thanks. my ol google skills are lacking it seems

[DarkLinux]

lols i was jk, anyways some times google does not pick up everything.

[cvccbum]

so I've successfully made my own Navmesh wrapper for Recast/Detour.. now when I use the navmesh file given by the 1st post here, everything works fine. but if I try to make another one from recastdemo it errors out at (Object reference not set to an instance of an object.):

at dtNavMesh.getTilesAt(dtNavMesh* , Int32 x, Int32 y, dtMeshTile** tiles, Int32 maxTiles)

I am assuming I am saving my navmesh files wrong. anyone have any pointers?

EDIT: Figured it out, finally.

[Ozius]

Thanks for a post.
At me it has not turned out to compile Dll. Has made everything as it is written, but at compilation there are many errors, this or that method isn't found in all from them. For example:
findNearestPoly: isn't a member "dtNavMesh".
Really if to look dtNavMesh there there is no such method, but it is in a class dtNavMeshQuery. Probably I use R+D distinct from yours? I use, which is given / - recastnavigation - Navigation-mesh Construction Toolset for Games - Google Project Hosting. Can lay out somewhere yours R+D?

[cvccbum]

I used his idea as my base code. You have to make a new load method, add a query variable, and then use the methods that way.

I have one last question.. not sure if anyone knows but.. how would I go about using multiple navmesh files for a single path? AKA run from human starting to stormwind. 3 meshes

[Bananenbrot]

This is why you can't simply wrap the demo code.
You have to understand what's going on. Look for a load or save method and then "reverse" it.

Actually, at most looking at mikko's code is reversing to me thanks to helpful variable names like s1 and straight refusal of the standard library and object oriented practices.
Not that I don't respect his work, a really awesome project and his demo app is much of help for understnading what's going on, but reading that code is hard.