// For: https://forum.arduino.cc/t/neo-pixel-with-using-multiple-inputs-output-logic/1047809/
// This Wokwi project: https://wokwi.com/projects/347018670462992980
//
// There are two options:
//   1. Use one pin for Neopixels and concatenate all Neopixel rings
//   2. Use four pins for the four separate Neopixel rings.
// Both options are good.
// I used the second option, but did not put them in an array (yet).
//
// nov 1, 2022, updated to 12 pixels per ring
//

#include <Adafruit_NeoPixel.h>

const byte Input1_Pin = 12;
const byte Input2_Pin = 13;

#define PIN1 2 //Neo Pixel Ring 1
#define PIN2 3 //Neo Pixel Ring 2
#define PIN3 4 //Neo Pixel Ring 3
#define PIN4 5 //Neo Pixel Ring 4

#define NUMPIXELS 12
Adafruit_NeoPixel pixels1(NUMPIXELS, PIN1, NEO_GRB + NEO_KHZ800);
Adafruit_NeoPixel pixels2(NUMPIXELS, PIN2, NEO_GRB + NEO_KHZ800);
Adafruit_NeoPixel pixels3(NUMPIXELS, PIN3, NEO_GRB + NEO_KHZ800);
Adafruit_NeoPixel pixels4(NUMPIXELS, PIN4, NEO_GRB + NEO_KHZ800);

int colorWalkRed;
int colorWalkGreen;
int colorWalkBlue;

void setup() 
{
//  Serial.begin(115200);
//  Serial.println( "The sketch has started");

  pinMode(Input1_Pin, INPUT);
  pinMode(Input2_Pin, INPUT);

  pixels1.begin();
  pixels2.begin();
  pixels3.begin();
  pixels4.begin();
  pixels1.show();
  pixels2.show();
  pixels3.show();
  pixels4.show();

  colorWalkRed = random( 0, 256);
  colorWalkGreen = random( 0, 256);
  colorWalkBlue = random( 0, 256);
}

void loop() 
{
  pixels1.fill(pixels1.Color(colorWalkRed, colorWalkGreen, colorWalkBlue), 0, NUMPIXELS);
  pixels1.show();
  AdvanceColorWalk();
  delay(100);
  pixels2.fill(pixels2.Color(colorWalkRed, colorWalkGreen, colorWalkBlue), 0, NUMPIXELS);
  pixels2.show();
  AdvanceColorWalk();
  delay(100);
  pixels3.fill(pixels3.Color(colorWalkRed, colorWalkGreen, colorWalkBlue), 0, NUMPIXELS);
  pixels3.show();
  AdvanceColorWalk();
  delay(100);
  pixels4.fill(pixels4.Color(colorWalkRed, colorWalkGreen, colorWalkBlue), 0, NUMPIXELS);
  pixels4.show();
  AdvanceColorWalk();
  delay(100);
}

void AdvanceColorWalk()
{
  colorWalkRed += random(0,20);
  if( colorWalkRed > 255)
    colorWalkRed -= 255;
  colorWalkGreen += random(0,20);
  if( colorWalkGreen > 255)
    colorWalkGreen -= 255;
  colorWalkBlue += random(0,20);
  if( colorWalkBlue > 255)
    colorWalkBlue -= 255;
}