How to enable SWIM-wrapped C ++ in Unity 3D?

Question

My goal is to get a toy in C ++ library wrapped with SWIG and available for C # / Mono scripts in Unity. (In other words, you have the library functionality working in the Windows build of the game. I will borrow Android as follows :)

I am following the combination of Building a C # module (SWIG tutorial), Unity and DLL (Eric Eastwood) and Getting started with SWiG for Visual Studio projects (technical recipes). I created two DLLs in Visual Studio 2013 and added them to the Unity project. But access to the toy method at run time is not performed.

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The steps that I followed (including general corrections for the error I get):

Create C ++ project / custom assembly

• Create a C ++ Win32 Console Application Project in Visual Studio
  • (because MonoDevelop on Windows cannot compile C ++)
• Add sample code to the project
• Create example.i (interface file for SWIG)
• Create a custom build tool for the interface file
• Execution of Custom Build Tool (generates shell code for C ++ and C #)
• Add C ++ shell code to the project (it will be used later to create C ++ DLL)

Create C # Project

• Create a C # Class Library Project in Visual Studio
• Change Target Platform Version 3.5
• Add C # shell code files to the project root directory
• Add the following library and namespace files to the C # shell files:

using System;
using System.Runtime.InteropServices;

namespace CSharpExampleLib {
...
}

Build two DLL releases

• Set build options for / x86 for both projects.
• Set a target for C # build for a C ++ build target
• ( DLL, )
• , DLL ()
• CorFlags, # DLL 32- () ( / ++ DLL)

DLL Unity

• Unity 4 (Pro) Mono script
• Unity
• DLL "/"
• Unity ( DLL)
• , " MonoDevelop..." ( MonoDevelop script, DLL)
• script:

using System.Runtime.InteropServices;
using System.IO;

DLL

, script # DLL (Intellisense , DLL ):

Debug.Log(CSharpExampleLib.example.fact(3));
// should log the result of 3 factorial

, Unity, :

DllNotFoundException: example
CSharpExampleLib.examplePINVOKE+SWIGExceptionHelper..cctor ()
Rethrow as TypeInitializationException: An exception was thrown by the type initializer for SWIGExceptionHelper
CSharpExampleLib.examplePINVOKE..cctor ()
Rethrow as TypeInitializationException: An exception was thrown by the type initializer for CSharpExampleLib.examplePINVOKE
CSharpExampleLib.example.fact (Int32 n)
SimpleController.Start () (at Assets/scripts/SimpleController.cs:10)

( Release, 32-, Dependency Walker ..) . - SWIG- Unity-, ? , DLL?

Answer 1

SWIG , , :

• ++ DLL , , SWIG (, , , example.i, ++, example.dll)

• ++- (example_wrap.cxx) ++.