#include <Adafruit_NeoPixel.h>

#define PIN 6
#define NUMPIXELS 16

Adafruit_NeoPixel pixels(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);

void setup() {
  pixels.begin(); // Initialize the NeoPixel library
}

void loop() {
  // Right Chase for 5 seconds
  rightChase(1);
  
  // Left Chase for 5 seconds
  leftChase(1);
  
  // All-round Flash
  allRoundFlash(5); // Flash 5 times
}

void rightChase(int seconds) {
  int iterations = seconds * 20; // 20 iterations per second (50ms delay)
  for (int j = 0; j < iterations; j++) {
    for (int i = 0; i < NUMPIXELS; i++) {
      pixels.setPixelColor(i, pixels.Color(255, 0, 0)); // Red
      pixels.show(); // Update
      delay(50); // 50ms delay
      pixels.setPixelColor(i, pixels.Color(0, 0, 0)); // Off
    }
  }
}

void leftChase(int seconds) {
  int iterations = seconds * 20; // 20 iterations per second (50ms delay)
  for (int j = 0; j < iterations; j++) {
    for (int i = NUMPIXELS - 1; i >= 0; i--) {
      pixels.setPixelColor(i, pixels.Color(0, 0, 255)); // Blue
      pixels.show(); // Update
      delay(50); // 50ms delay
      pixels.setPixelColor(i, pixels.Color(0, 0, 0)); // Off
    }
  }
}

void allRoundFlash(int flashes) {
  for (int j = 0; j < flashes; j++) {
    for (int i = 0; i < NUMPIXELS; i++) {
      pixels.setPixelColor(i, pixels.Color(0, 0, 255)); // White
    }
    pixels.show(); // Update
    delay(250); // 250ms delay
    for (int i = 0; i < NUMPIXELS; i++) {
      pixels.setPixelColor(i, pixels.Color(0, 0, 0)); // Off
    }
    pixels.show(); // Update
    delay(250); // 250ms delay
  }
}