I'm making a game of snake on the adafruit Neopixel shield and have run in to a problem. How do you fill out an array (in this case a 5*8 array) with values once the class has been called. This is my code so far

H file

#include <Arduino.h>
#include <Adafruit_NeoMatrix.h>
#include <streaming.h>

class Snake : public Adafruit_NeoMatrix 
{
    public:
    Snake();
    void drawSnake();

    private:
    int snakeBoard[5][8];
};

CPP file

#include "Snake.h"

Snake::Snake() : Adafruit_NeoMatrix(8, 5, D6,
  NEO_MATRIX_TOP        + NEO_MATRIX_LEFT +
  NEO_MATRIX_ROWS       + NEO_MATRIX_PROGRESSIVE,
  NEO_GRB               + NEO_KHZ800)
{
  begin(); // start the matrix
  show();

  int snakeBoard[5][8] {{1,1,0,0,0,0,0,0},
                        {0,0,1,0,0,0,0,0},
                        {0,0,1,0,1,1,-1,0},
                        {0,0,1,1,1,0,0,0},
                        {0,0,0,0,0,0,0,0}};
}

void Snake::drawSnake()
{
  for(int y = 0; y < 5; y ++)
  {
    for(int x = 0; x < 8; x ++)
    {
      Serial << "X: " << x << " Y: " << y << " Value" << snakeBoard[x][y] << endl;
      delay(100);
    }
  }
  drawPixel(5,5,Color(0,0,255));
  show();
}

When I run the program random garbage is printed in the serial monitor.

I'm making a game of snake on the adafruit Neopixel shield and have run in to a problem. How do you fill out an array (in this case a 5*8 array) with values once the class has been called. This is my code so far

H file

#include <Arduino.h>
#include <Adafruit_NeoMatrix.h>
#include <streaming.h>

class Snake : public Adafruit_NeoMatrix 
{
    public:
    Snake();
    void drawSnake();

    private:
    int snakeBoard[5][8];
};

CPP file

#include "Snake.h"

Snake::Snake() : Adafruit_NeoMatrix(8, 5, D6,
  NEO_MATRIX_TOP        + NEO_MATRIX_LEFT +
  NEO_MATRIX_ROWS       + NEO_MATRIX_PROGRESSIVE,
  NEO_GRB               + NEO_KHZ800)
{
  begin(); // start the matrix
  show();

  int snakeBoard[5][8] = {{1,1,0,0,0,0,0,0},
                        {0,0,1,0,0,0,0,0},
                        {0,0,1,0,1,1,-1,0},
                        {0,0,1,1,1,0,0,0},
                        {0,0,0,0,0,0,0,0}};
}

void Snake::drawSnake()
{
  for(int y = 0; y < 5; y ++)
  {
    for(int x = 0; x < 8; x ++)
    {
      Serial << "X: " << x << " Y: " << y << " Value" << snakeBoard[x][y] << endl;
      delay(100);
    }
  }
  drawPixel(5,5,Color(0,0,255));
  show();
}

When I run the program random garbage is printed in the serial monitor.