// 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() {
  // put your main code here, to run repeatedly:
if(digitalRead(2) == LOW){
  for (int light=0; light<15; light+= 2){
    leds[light] = CRGB::Green;
    leds[29 - light] = CRGB::Red;
    FastLED.show();
    delay(550);
  }



for(int light=1; light<30; light+= 2 ){
 leds[light] = CRGB::Red;
 leds[29 - light] = CRGB::Green;
 FastLED.show();
 delay(250);
}



  for (int light=0; light<30; light++){
    leds[light] = CRGB::Black;
  }
  FastLED.show();
delay(100);

for(int light=0; light<30; light+= 2){

  leds[light] = CRGB::DeepPink;
  FastLED.show();
  delay(250);
}
for(int light=0; light<30; light+= 3){

  leds[light] = CRGB::White;
  FastLED.show();
  delay(250);
}
for(int light=0; light<30; light++){

  leds[light].setRGB(random(256), random(256), random(256));
  FastLED.show();
  delay(250);
}
 for (int light=0; light<30; light++){
    leds[light] = CRGB::Black;
  }
  FastLED.show();
delay(100);

for(int light=11; light<19; light++){
  leds[light] = CRGB::Blue;
  FastLED.show();
}
for(int light=0; light<10; light++){
  leds[light] = CRGB::Red;
  FastLED.show();
  delay(300);
}
 
 for( int light=0; light<10; light++){
 leds[29-light] = CRGB::Green;
 FastLED.show(); 
 delay(300);
 }
for(int light=0; light<30; light++){
  leds[light] = CRGB::Cyan;
  FastLED.show();
}



}
}

void lightsOff(){
  for (int light=0; light<30; light++){
    leds[light] = CRGB::Black;
  }
  FastLED.show();
  }