Developing C# .dll for use with Unity in Visual Studio

#Developing C# .dll for use with Unity in Visual Studio

Create new project, for type ‘Class Library’
Add UnityEngine.dllference to your ClassLibrary.
- Right-click on ClassLibrary, and select Add Reference
- Go to Browse, and navigate in Unity install directory to find UnityEngine
  
  C:\Program Files (x86)\Unity\Editor\Data\Managed\UnityEngine.dll
In Class1.cs, delete the namespace block in the generated class template
```
namespace ScenarioEngine
{
    class MyUnityClass
    {
    }
}
```
Add using UnityEngine; to class imports

Add class declaration, using MonoBehavior type

public class MyUnityClass : MonoBehaviour
{

} 

Change the Target Framework to .NET Framework 3.5

Right-click on ClassLibrary, and select .NET Framework 3.5 under Target framework

.NET Framework 3.5 does not install by default, select Install other frameworks in the drop-down to be linked to download page on MSDN.

You will need to restart Visual Studio after installing
Specify Release build profile in Visual Studio for the dll
Build the Solution
Open a Unity Project, and add dll. The dll must be added as an Asset into the Plugins folder.
- The Plugins folder is a default member of the Project file structure.
- Right-click on Plugins folder, and select Import New Asset.
- Locate the dll location in the project \bin folder
  
  C:\Users\Stan\Documents\Visual Studio 2013\Projects\ScenarioEngine\ScenarioEngine\bin\Release
Open a new or existing C# script in MonoDevelop, and develop normally

Initialize objects of type MyUnityClass, call functions by dot notation.

Auto-complete should include MyUnityClass

Additional YouTube reference & credit Robert Banister