#include <Adafruit_NeoPixel.h>
int i = 0;
int t = 0;
#define PIN 9

//Original Code by Adafruit (adafruit.com), Edited by PerfectPixel, 2016 (instructables.com/member/perfectpixel)
//Code is public domain, Enjoy!
Adafruit_NeoPixel strip = Adafruit_NeoPixel(8, PIN, NEO_GRB + NEO_KHZ800);

// An important announcement from Adafruit:
// To reduce NeoPixel burnout risk, add 1000 uF capacitor across
// pixel power leads, add 300 - 500 Ohm resistor on first pixel's data input
// and minimize distance between Arduino and first pixel.  Avoid connecting
// on a live circuit...if you must, connect GND first.

void setup() {
  pinMode(3, INPUT);
  //Serial.begin(9600); //Debugging
  strip.begin();
  strip.show(); // Initialize all pixels to 'off'
}

void loop() {
  switch(i) {  //Change the RGB values in the colorWipe functions to change the colors that the redstone cube becomes.
    case 0: colorWipe(strip.Color(0, 0, 0), 5);
    break;
    case 1:colorWipe(strip.Color(255, 0, 0), 5);
    break;
    case 2:colorWipe(strip.Color(0, 255, 0), 5);
    break;
    case 3:colorWipe(strip.Color(0, 0, 255), 5);
    break;
    case 4:colorWipe(strip.Color(0, 255, 255), 5);
    break;
    case 5:colorWipe(strip.Color(255, 0, 255), 5);
    break;
    case 6:colorWipe(strip.Color(255, 255, 0), 5);
    break;
    case 7:colorWipe(strip.Color(255, 35, 97), 5);
    break;
    case 8:colorWipe(strip.Color(13, 73, 216), 5);
    break;
    case 9:colorWipe(strip.Color(248, 60, 49), 5);
    break;
    case 10:colorWipe(strip.Color(191, 84, 229), 5);
    break;
    case 11:colorWipe(strip.Color(76, 255, 5), 5);
    break;
    case 12:colorWipe(strip.Color(0, 240, 80), 5);
    break;
    case 13:colorWipe(strip.Color(7, 234, 233), 5);
    break;
    case 14:colorWipe(strip.Color(73, 10, 61), 5);
    break;
    case 15:colorWipe(strip.Color(63, 184, 175), 5);
    break;
    case 16:colorWipe(strip.Color(196, 77, 88), 5);
    break;
  }
  if(analogRead(3) < 600){ //by default, 600 is the threshhold for detecting if the tap sensor has been activated.
    i++;
    delay(250);
    if(i > 16) i = 0;
  }

  t++;
  delay(25);
  //Serial.println(analogRead(3)); //Debugging

  if(t > 1000){ //this will automatically turn off the LED's after some time.
    t = 0;
    i = 0; 
  }
}

// Fill the dots one after the other with a color
void colorWipe(uint32_t c, uint8_t wait) {
  for(uint16_t i=0; i<strip.numPixels(); i++) {
    strip.setPixelColor(i, c);
    strip.show();
    delay(wait);
  }
}

void rainbow(uint8_t wait) {
  uint16_t i, j;

  for(j=0; j<256; j++) {
    for(i=0; i<strip.numPixels(); i++) {
      strip.setPixelColor(i, Wheel((i+j) & 255));
    }
    strip.show();
    delay(wait);
  }
}

// Slightly different, this makes the rainbow equally distributed throughout
void rainbowCycle(uint8_t wait) {
  uint16_t i, j;

  for(j=0; j<256*5; j++) { // 5 cycles of all colors on wheel
    for(i=0; i< strip.numPixels(); i++) {
      strip.setPixelColor(i, Wheel(((i * 256 / strip.numPixels()) + j) & 255));
    }
    strip.show();
    delay(wait);
  }
}

//Theatre-style crawling lights.
void theaterChase(uint32_t c, uint8_t wait) {
  for (int j=0; j<10; j++) {  //do 10 cycles of chasing
    for (int q=0; q < 3; q++) {
      for (int i=0; i < strip.numPixels(); i=i+3) {
        strip.setPixelColor(i+q, c);    //turn every third pixel on
      }
      strip.show();

      delay(wait);

      for (int i=0; i < strip.numPixels(); i=i+3) {
        strip.setPixelColor(i+q, 0);        //turn every third pixel off
      }
    }
  }
}

//Theatre-style crawling lights with rainbow effect
void theaterChaseRainbow(uint8_t wait) {
  for (int j=0; j < 256; j++) {     // cycle all 256 colors in the wheel
    for (int q=0; q < 3; q++) {
      for (int i=0; i < strip.numPixels(); i=i+3) {
        strip.setPixelColor(i+q, Wheel( (i+j) % 255));    //turn every third pixel on
      }
      strip.show();

      delay(wait);

      for (int i=0; i < strip.numPixels(); i=i+3) {
        strip.setPixelColor(i+q, 0);        //turn every third pixel off
      }
    }
  }
}

// Input a value 0 to 255 to get a color value.
// The colours are a transition r - g - b - back to r.
uint32_t Wheel(byte WheelPos) {
  WheelPos = 255 - WheelPos;
  if(WheelPos < 85) {
    return strip.Color(255 - WheelPos * 3, 0, WheelPos * 3);
  }
  if(WheelPos < 170) {
    WheelPos -= 85;
    return strip.Color(0, WheelPos * 3, 255 - WheelPos * 3);
  }
  WheelPos -= 170;
  return strip.Color(WheelPos * 3, 255 - WheelPos * 3, 0);
}