examples/blocks/blocks/input.go
func (i *Input) GamepadIDButtonPressed() int {
	for _, id := range ebiten.GamepadIDs() {
		for b := ebiten.GamepadButton(0); b <= ebiten.GamepadButtonMax; b++ {
			if ebiten.IsGamepadButtonPressed(id, b) {
				return id
			}
		}
	}
	return -1
}
func (i *Input) GamepadIDButtonPressed() int {
	for _, id := range ebiten.GamepadIDs() {
		for b := ebiten.GamepadButton(0); b <= ebiten.GamepadButtonMax; b++ {
			if ebiten.IsGamepadButtonPressed(id, b) {
				return id
			}
		}
	}
	return -1
}
// GamepadIDButtonPressed returns a gamepad ID where at least one button is pressed.
// If no button is pressed, GamepadIDButtonPressed returns -1.