flame_gamepad

Gamepad is only supported on Android at the moment.

Checking if the gamepad is connected

    bool isConnected;
    try {
      isConnected = await FlameGamepad.isGamepadConnected;
    } on PlatformException {
      isConnected = false;
    }

Listening to events

To listen to gamepad events use the 'Flame.gamepad' instance, to add a listener use following snippet.

  var gamepad = FlameGamepad()
    ...addListener((String evtType, String key) {
      print(key)
      if (evtType == GAMEPAD_BUTTON_UP) {
        print('is up')
      } else {
        print('is down')
      }
    });

To check for specific keys use the following constants avaiable flame_gamepad class

GAMEPAD_BUTTON_UP
GAMEPAD_BUTTON_DOWN

GAMEPAD_DPAD_UP
GAMEPAD_DPAD_DOWN
GAMEPAD_DPAD_LEFT
GAMEPAD_DPAD_RIGHT

GAMEPAD_BUTTON_A
GAMEPAD_BUTTON_B
GAMEPAD_BUTTON_X
GAMEPAD_BUTTON_Y

GAMEPAD_BUTTON_L1
GAMEPAD_BUTTON_L2

GAMEPAD_BUTTON_R1
GAMEPAD_BUTTON_R2

GAMEPAD_BUTTON_START
GAMEPAD_BUTTON_SELECT

A functional example can be found here

Libraries

flame_gamepad

Dart

dart:ui
Built-in types and core primitives for a Flutter application. [...]

Core

dart:async
Support for asynchronous programming, with classes such as Future and Stream. [...]
dart:collection
Classes and utilities that supplement the collection support in dart:core. [...]
dart:convert
Encoders and decoders for converting between different data representations, including JSON and UTF-8. [...]
dart:core
Built-in types, collections, and other core functionality for every Dart program. [...]
dart:developer
Interact with developer tools such as the debugger and inspector. [...]
dart:math
Mathematical constants and functions, plus a random number generator. [...]
dart:typed_data
Lists that efficiently handle fixed sized data (for example, unsigned 8 byte integers) and SIMD numeric types. [...]

VM

dart:io
File, socket, HTTP, and other I/O support for non-web applications. [...]
dart:isolate
Concurrent programming using isolates: independent workers that are similar to threads but don't share memory, communicating only via messages. [...]