Updated README.md

Author: lpestl

README.md

@@ -1,2 +1,19 @@
 # HttpGamepadInput
-Simple UI implementation of gamepad emulation where button press events are sent via HTTP.
+
+Simple UI implementation of gamepad emulation where button press events are sent via HTTP. Implemented on .NET MAUI C# + xaml.
+
+![Preview](media/00_preview.png)
+
+As a receiver, for demo purposes it is used application on Unreal Engine, which shows how [HttpServerPlugin](https://github.com/lpestl/HttpServerPlugin) works and how [any Http Client](https://github.com/lpestl/HttpGamepadInput) can interact with it over the network.
+
+## How it works
+
+In fact, the system looks like this:
+* there is a [HttpGamepadInput](https://github.com/lpestl/HttpGamepadInput) that is launched as an application on a mobile device;
+* there is a computer on which the Unreal Engine project [HttpServerDemo](#httpserverdemo) is launched. The project itself is a character that can be controlled. A [HttpServerPlugin](https://github.com/lpestl/HttpServerPlugin) is connected to the project that launches the HTTP Server and waits for Http request to be received.
+
+![Schematic diagram](media/01_scheme.png)
+
+The computer and the mobile device are on the same LAN and are connected to each other by routers via WiFi. When a button is pressed on the mobile device in the [HttpGamepadInput](https://github.com/lpestl/HttpGamepadInput) application, an HTTP request is sent to the server launched on the Unreal Engine project. The UE project receives this request, interprets it as a command to the character and alternates the character in the game.
+
+![Gameplay](media/00_gameplay.gif)