#include <MD_MAX72xx.h>

// matrix controls
const byte data_pin = 11;
const byte chip_select_pin = 10;
const byte clock_pin = 13;
const byte max_devices = 4;

const byte vpin = A0;
const byte hpin = A1;

int head_y = 0;
int head_x = 0;

String direction="",prev_direction="";
int max_x = 31, max_y = 7;

// creating matrix object
MD_MAX72XX matrix = MD_MAX72XX(MD_MAX72XX::PAROLA_HW, chip_select_pin, max_devices);

// define the joystick controls

void setup(){
  Serial.begin(9600);
  delay(25);
  matrix.begin();
  matrix.clear();
  matrix.setPoint(head_y, head_x, true)
}

void loop(){
  //Serial.print(analogRead(hpin));
  //Serial.print('\t');
  //Serial.println(analogRead(vpin));

  check_direction();
  move_sprite();

  matrix.setPoint(head_y, head_x, true)

}

void check_direction(){

  if(analogRead(hpin)>512)
    direction = "left";
  else if (analogRead(hpin)<512)
    direction = "right";
  else if (analogRead(vpin)>512)
    direction = "up";
  else if (analogRead(vpin)<512)
    direction = "down";
  
  
}
void move_sprite(){
  if(direction == "left") head_x++;
  else if (direction == "right") head_x--;
  else if (direction == "up") head_y--;
  else if (direction == "down") head_y++;
}