What controls are available? From Flutter to Unity

[nyck33]

It looks like messages are passed from Flutter to Unity for the rotation example so I'm assuming that rotation speed is visible in the Unity inspector and I can pass messages from Flutter to Unity to adjust other parameters visible in the inspector by making them public or using [SerializeField] in Unity code.

I couldn't find the documentation about what is possible. For example, can I have a dpad in Flutter and have that used as a controller in which case, is there a code example of this usage?

[timbotimbo]

There are 2 ways of interacting with unity.

• Input
  Touch input is passed though to Unity, which detects it just like it normally does on mobile.
  (this will probably work for things like bluetooth controllers too).
  You should be able to play with any accelerometer or gyro sensors too.
• Messages
  Sending a message from Flutter to Unity is like GameObject.SendMessage in Unity.
  You can call a public function on a monobehavior with a parameter.

So for a dpad, you could have one in a Unity canvas, like in normal unity apps.
Or you could make one in flutter, and pass a message to Unity on each press down / up event.
Your unity code would then have to keep track of the dpad state.

I don't know of any example code for something like this.