Add Gamepad module

[nkymut]

Adds gamepad support for Strudel, allowing users to use game controllers as expressive input devices for live coding music.

Examples

// Use button values to control amplitude
$: sequence([
  s("bd").gain(pad.X),    // X button controls gain
  s("[hh oh]").gain(pad.tglY),    // Y button toggles gain
]);

// Use analog stick for continuous control
$: note("c4*4".add(pad.y1_2.range(-24,24))) // Left stick Y controls pitch shift
  .pan(pad.x1_2);          // Left stick X controls panning

// Use toggle buttons to switch patterns on/off

// Define button sequences
const HADOKEN = [
  'd',               // Down
  'r',               // Right
  'a',               // A
];

const KONAMI = 'uuddlrlrba' //Konami Code ↑↑↓↓←→←→BA

// Add these lines to enable buttons(but why?)
$:pad.D.segment(16).gain(0)
$:pad.R.segment(16).gain(0)
$:pad.A.segment(16).gain(0)

// Check button sequence (returns 1 when detected, 0 when not within last 1 second)
$: sound("hadoken").gain(pad.checkSequence(HADOKEN))

Testing Done

• [x]Tested with Logitech Gamepad F310
• Tested with Xbox controller
• Tested with PS4/PS5 controller