#include <Adafruit_NeoPixel.h>

// Define pin numbers
const int forwardButton = 6;
const int direction = 2;
const int pulse = 3;
const int ledPin = 7; // Pin data Neopixel
const int numPixels = 16; // Jumlah LED pada ring

// Define timing for stepper motor
int time = 13000; // Set a pulse length of the stepper or speed of the stepper motor in microseconds

// Create Neopixel object
Adafruit_NeoPixel ring = Adafruit_NeoPixel(numPixels, ledPin, NEO_GRB + NEO_KHZ800);

void setup() {
  // Set pin modes
  pinMode(forwardButton, INPUT_PULLUP);
  pinMode(direction, OUTPUT);
  pinMode(pulse, OUTPUT);

  // Initialize Neopixel
  ring.begin();
  ring.show(); // Initialize all pixels to 'off'

  // Set initial state for stepper motor
  digitalWrite(direction, LOW);
  digitalWrite(pulse, LOW);
}

void loop() {
  // Read the status of forward button
  int forwardState = digitalRead(forwardButton);

  // Check the forward button status
  if (forwardState == LOW) {
    delay(10); // Debounce
    if (forwardState == LOW) {
      digitalWrite(direction, LOW); // Set the stepper motor clockwise direction
      runningLightEffect(); // Display running light effect
      do {
        digitalWrite(pulse, HIGH);
        delayMicroseconds(time);
        digitalWrite(pulse, LOW);
        delayMicroseconds(time);
        forwardState = digitalRead(forwardButton); // Read the forward button status again
      }
      while (forwardState != HIGH); // Continue until button is released
    }
  } else {
    turnOffRing(); // Turn off Neopixel ring when button is not pressed
  }
}

void runningLightEffect() {
  // Rotate through the LED ring with 3 LEDs on at a time
  int ledOffset = 0;
  while (digitalRead(forwardButton) == LOW) { // Continue while button is pressed
    ring.clear(); // Clear the ring
    for (int i = 0; i < 3; i++) { // Light up 3 LEDs
      int pixelIndex = (ledOffset + i) % numPixels;
      ring.setPixelColor(pixelIndex, ring.Color(255, 255, 255)); // Set LED to white
    }
    ring.show();
    
    // Move the stepper motor
    digitalWrite(pulse, HIGH);
    delayMicroseconds(time);
    digitalWrite(pulse, LOW);
    delayMicroseconds(time);

    delay(100); // Adjust the speed of the effect
    ledOffset = (ledOffset + 1) % numPixels; // Move the offset
  }
}

void turnOffRing() {
  for (int i = 0; i < numPixels; i++) {
    ring.setPixelColor(i, ring.Color(0, 0, 0)); // Set LED to off
  }
  ring.show();
}