Building C++ DLL for Unity Plugin

A simple demonstration of using C++ library (DLL) in Unity. This repo describes how to build a C++ library in the form of dynamic linked library (DLL), encapsulate C++ classes and export functions. On the other hand, this repo also shows how to import and use the library (DLL) in Unity via c# script.

How to Use Repo

This repo contains two folders:

1. SampleCppDll - A Visual Studio Community 2017 project and C++ files.

2. UnitySampleDll - An Unity project that make uses of the DLL built by SampleCppDll. Unity version 5.6.2f1 is used here.

Quick Start

1. Use Visual Studio Community 2017 to open the SampleCppDll solution file SampleCppDll/SampleCppDll.sln

2. Use the menu Build > Build Solution to build (Remember to set the architecture x64 and it's assumed 64bits environment here)

3. Copy the output file SampleCppDll.dll under SampleCppDll/x64/Debug/ to UnitySampleDll/Assets/Plugins/ (If release build is used then it's under SampleCppDll/x64/Release/)

4. Use Unity 5.6+ to open folder UnitySampleDll

5. Open UnitySampleDll/Assets/Scene/Main.unity

6. Run it in the editor. Output from DLL will be printed in the Unity console tab.

7. More functions can be added to the C++ projects or even linking other library (Note that all linked dynamic linking library has to be copied to the UnitySampleDll/Assets/Plugins folder). Enjoy the boilerplate ~