Simple C++ SDL_Joystick and SDL_Haptic wrapper

I used SDL GameController and Haptic in SDL2.
To use this code, you need to link SDL2 in to your project.

I only tested on Windows 10 but should work on other suppported OS by SDL2.

This is a simple game controller (XBOX 360) wrapper written in C++ for Windows.
The reason why I made this was because I was looking for library that supports crossplatform and forcefeedback(vibration/rumble/haptic).
There were many options such as XInput, SDL, SFML, GLFW, but none of these supported crossplatform and forcefeedback except SDL.

Detects XBOX 360 controller connection, disconnection and input. All controllers are tracked with SDL_Joystick's instance ID (number). You can set callback functions for connection, disconnection and input or simply check button state, etc to use controller

ControllerManager is Singleton class. Call getInstance() to get instance. FYI, it uses lazy initialization.
Make sure you call ControllerManager::DeleteInstance to terminate and delete instance.
Also look main.cpp for sample run.
Any improvement or new features are welcomed. PR it :)