// LED STRIP EXAMPLE
// can use this to write code at home

// -----------------------------------------

// use the FastLED library (someone's pre-written code)
#include <FastLED.h>

// set how many LEDs there are and the data pin.
const int NUM_LEDS = 30;
const int DATA_PIN = 6;

// this creates an array to reference our LEDs
CRGB leds[NUM_LEDS];

void setup() {
  // tells the FastLED code e.g. what LEDs we are using, the data pin
  FastLED.addLeds<NEOPIXEL, DATA_PIN>(leds, NUM_LEDS);

  // limit the strip's draw to 400mA at 5v
  FastLED.setMaxPowerInVoltsAndMilliamps(5, 400);

  // turns the brightness down (so my eyes don't hurt)
  FastLED.setBrightness(8);
  pinMode (2, INPUT_PULLUP);
}






void loop() {
  for (int light = 0; light < 30; light += 2) {
    leds[light] = CRGB::White;
    leds[light + 1] = CRGB::Green;
    leds[light + 2] = CRGB::Red;
  }

  FastLED.show();
  delay(420);

  for (int light = 0; light < 30; light += 2) {
    leds[light] = CRGB::Red;
    leds[light + 1] = CRGB::White;
    leds[light + 2] = CRGB::Green;
  }
  FastLED.show();
  delay(420);


  if (digitalRead (2) == LOW) {
    startLight();
  }
}

void startLight() {
  for (int light = 0; light < 30; light += 2) {
    leds[light] = CRGB::Green;
    leds[light + 1] = CRGB::Cyan;
  }

  FastLED.show();
  delay(420);

  for (int light = 0; light < 30; light += 2) {
    leds[light] = CRGB::Cyan;
    leds[light + 1] = CRGB::Green;

  }
  FastLED.show();
  delay(420);

  for (int light = 0; light < 15; light++) {
    leds[light] = CRGB::Yellow;
    leds[29 - light].setRGB(255, 0, 188);

    FastLED.show();
    delay(420);
  }
  for (int light = 0; light < 10; light++) {
    leds[light] = CRGB::Green;
    leds[10 + light] = CRGB::White;
    leds[20 + light] = CRGB::Red;

    FastLED.show();
    delay(420);
  }

  for (int light = 9; light >= 0; light--) {
    leds[light].setRGB(255, 0, 188);
    leds[10 + light] = CRGB::Blue;
    leds[20 + light] = CRGB::Yellow;

    FastLED.show();
    delay(420);
  }
  for (int light = 14; light > -1; light--) {
    leds[light] = CRGB::Cyan;
    leds[29 - light] = CRGB::Green;

    FastLED.show();
    delay(400);
  }
  for (int light = 0; light < 30; light += 2) {
    leds[light] = CRGB::Red;
    leds[light + 1] = CRGB::Blue;
  }

  FastLED.show();
  delay(420);

  for (int light = 0; light < 30; light += 2) {
    leds[light] = CRGB::Blue;
    leds[light + 1] = CRGB::Red;
  }
  FastLED.show();
  delay(420);

  for (int light = 0; light < 30; light += 2) {
    leds[light].setRGB(255, 0, 188);
    leds[light + 1].setRGB(255, 162, 0);
  }
  FastLED.show();
  delay(420);

  for (int light = 0; light < 30; light += 2) {
    leds[light].setRGB(255, 162, 0);
    leds[light + 1].setRGB(255, 0, 188);
  }
  FastLED.show();
  delay(420);

  leds[random(15)] = CRGB::Yellow;
  FastLED.show();
  delay(440);
  leds[random(20)] = CRGB::Red;
  FastLED.show();
  delay(440);
  leds[random(25)] = CRGB::Blue;
  FastLED.show();
  delay(440);
  leds[random(30)] = CRGB::White;
  FastLED.show();
  delay(440);

  for (int light = 0; light < 30; light += 2) {
    leds[light] = CRGB::Yellow;
    leds[light + 1] = CRGB::Cyan;
    leds[light + 2] = CRGB::Red;
    leds[light + 3] = CRGB::Blue;
  }

  FastLED.show();
  delay(420);

  for (int light = 0; light < 30; light += 2) {
    leds[light] = CRGB::Red;
    leds[light + 1] = CRGB::Yellow;
    leds[light + 2] = CRGB::Blue;
    leds[light + 3] = CRGB::Cyan;
  }
  FastLED.show();
  delay(420);
}