/******************************************************************************
 * DreamMaker FX / www.dreammakerfx.com
 *****************************************************************************/
/*

Effect name: Standard Flanger 
Effect description:  This is an implementation of a typical flanger pedal. This sketch uses
the variable delay block to create a time / pitch shifted version of the original signal.  When
this is mixed with the original signal, it creates the "flange" effect.  The effect becomes 
pronouced with feedback.  

Left pot label: Depth
Left pot function: The depth of the flanger effect

Center pot label: Rate
Center pot function: The rate of the LFO (low-frequency oscillator) controlling the flanger

Right pot label: Feedback
Right pot function: Feedback of the effect.  When the pot is at 12:00, the 
                    feedback is zero.  Full left is -1.0 and full right is 1.0.

Left footswitch label: Bypass
Left footswitch function: Bypasses the effect

Right footswitch label: Tap rate
Right footswitch function: Tap this switch to set the rate of the flanger

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Created by: DreamMaker
DreamMakerFx package version: 1.5.3
Sketch version: 1.0
*/ 
#include <dreammakerfx.h>

fx_variable_delay flangey(1.0,            // Initial oscillator rate of 1Hz (1 cycle / second)
                          0.5,            // Initial depth of 0.5
                          0.4,            // Initial feedback of 0.4
                          OSC_TRIANGLE);  // Use a triangle oscillator

void setup() {
  
  // Initialize the pedal!
  pedal.init();

  // Route audio from instrument -> my_variable_delay -> amp
  pedal.route_audio(pedal.instr_in, flangey.input);
  pedal.route_audio(flangey.output, pedal.amp_out);  

  // left footswitch is bypass
  pedal.add_bypass_button(FOOTSWITCH_LEFT);

  // Right foot switch is tap loop length
  pedal.add_tap_interval_button(FOOTSWITCH_RIGHT, true);

  // Run this effect
  pedal.run();

}


void loop() {

  // If new tempo has been tapped in, use that to control flange rate
  if (pedal.new_tap_interval()) { 
    flangey.set_rate_hz(pedal.get_tap_freq_hz());
  } 

  // Left pot controls depth of the effect
  if (pedal.pot_left.has_changed()) { 
    flangey.set_depth(pedal.pot_left.val);     
  } 

  // Center pot controls rate
  if (pedal.pot_center.has_changed()) { 
    float rate_hz = pedal.pot_center.val* 6.0;
    pedal.set_tap_blink_rate_hz(rate_hz);
    flangey.set_rate_hz(rate_hz);     
  } 

  // Right pot controls the feedback (-1.0 to 1.0)
  if (pedal.pot_right.has_changed()) {
   flangey.set_feedback(1.0 - pedal.pot_right.val*2.0);
  }

   // Run pedal service to take care of stuff
  pedal.service();  
}