BC_2nd_Blade_ext/ret_1-board

// Turn Alt blade on/off using Aux button
// Works on 2 button sabers even if running 1 button controls
    case EVENTID(BUTTON_AUX, EVENT_FIRST_HELD, MODE_ON):
      hybrid_font.DoEffect(EFFECT_USER4, 0);
      return true;

//Down where SB_Effect has the other effect's sounds trigger, this gets added:

      case EFFECT_USER4: // Alt blade
        if (!second_blade_on_) {
          hybrid_font.PlayCommon(&SFX_out);
          second_blade_on_ = true;
        } else {
          hybrid_font.PlayCommon(&SFX_in);
          second_blade_on_ = false;
        }


// second_blade_on_ variable needs to be initialized as false (with the other bools in the prop)
// It also needs to become false anywhere there's a call to Off() to keep the toggle in sync if Aux is not the event to trigger retraction.

//Then the blade style is like this:

  StylePtr<Layers<
    Black,
    AlphaL<
    // This Red can be replaced by a Layers<> with your existing style stuff in it, from the base blade down to, but not including, the InOutTrL.
    Red,

    IsGreaterThan<EffectIncrementF<EFFECT_USER4,Int<32768>,Int<16384>>,Int<100>>>,
    EffectSequence<EFFECT_USER4,TransitionEffectL<TrConcat<TrInstant,Black,TrWipe<500>>,EFFECT_USER4>,TransitionEffectL<TrConcat<TrInstant,
    // This Red should be the same as the base blade color layer
    Red,

    TrWipeInX<Int<500>>>,EFFECT_USER4>>,
    InOutTrL<TrInstant,TrWipeInX<WavLen<EFFECT_RETRACTION>>>
  >>(),