//#include <Adafruit_GFX.h>
#include <Adafruit_NeoMatrix.h>
//#include <Adafruit_NeoPixel.h>

// DATA PIN
// If you want to use a different data pin on your microcontroller CHANGE THIS!
#define DATA_PIN 13

// Matrix setup params
Adafruit_NeoMatrix matrix = Adafruit_NeoMatrix(32, 8, DATA_PIN,
NEO_MATRIX_TOP    + NEO_MATRIX_LEFT +
NEO_MATRIX_ROWS + NEO_MATRIX_PROGRESSIVE,// + NEO_MATRIX_ZIGZAG,
NEO_GRB            + NEO_KHZ800);

unsigned long timeBetweenPixShift = 110;
unsigned long nextPixShiftTime;

int center = matrix.width();
int pixCount = 0;
//String message = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
String message = "000007";
int textPixCount = 0;
int loopCount = 3;

const uint16_t colors[] = {
  matrix.Color(255, 0, 255), 
  matrix.Color(100, 255, 0), 
  matrix.Color(255, 255, 0),
  matrix.Color(0, 0, 255), 
  matrix.Color(100, 100, 100), 
  matrix.Color(0, 255, 255), 
  matrix.Color(255, 255, 255)};

void setup() 
{
  matrix.begin();
  matrix.setTextWrap(false);
  matrix.setBrightness(40);
  matrix.setTextColor(colors[0]);
}

void loop() 
{
  DisplayMessage(message);
  
  // delay(100);
}

void DisplayMessage(String Text)
{
  if (millis() > nextPixShiftTime)
  {
    if(loopCount == 0)
      return;

    int Y = 0;

    textPixCount = (Text.length()*6)+32;
    pixCount++;
    if(pixCount == textPixCount)
    {
      pixCount = 0;
      loopCount--;
    }

    if(message.length()<6)
      Y = startPos(Text, center, 3);
    else
      Y = 32 - pixCount;

    if(loopCount == 0)
      Text = "";

    matrix.fillScreen(0);
    matrix.setCursor(Y, 0);
    matrix.setTextColor(colors[1]);
    matrix.print(Text);
    matrix.drawPixel(loopCount, 7, colors[4]);
    matrix.show();

    nextPixShiftTime = millis() + timeBetweenPixShift;
  }
}

int startPos(String text, int width, int offset) 
{
  int retnum = 0;
  retnum = width/2 - ((text.length()+1)*5+text.length())/2 + offset;
  return retnum;
}