#include <MD_MAX72xx.h>
#include <ezButton.h>

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

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

ezButton button(8);

// Hold joystick Position
int head_x = 0;
int head_y = 0;

// Hold maximum column and row number for dot matrix
int flag = 0;
int max_x = 31;
int max_y = 7;


String direction = "";
String prev_direction = "";

// define the joystick controls
const byte hpin = A0;
const byte vpin = A1;



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

  button.setDebounceTime(25);
}

void loop(){
  button.loop();

  if(flag ==0){
    check_direction();
    move_sprite();
  }
  
  matrix.setPoint(head_y,head_x,true);
  delay(200); 
}

void check_direction(){
  if(analogRead(hpin)>512 && prev_direction !="Right"){
    direction = "Left";
  }
  else if(analogRead(hpin)<512 && prev_direction !="Left"){
    direction = "Right";
  }
  else if(analogRead(vpin)>512 && prev_direction !="Down"){
    direction = "Up";
  }
  else if(analogRead(vpin)<512 && prev_direction !="Up"){
    direction = "Down";
  }
  // Updating previous direction
  prev_direction = direction;

}
void move_sprite(){
  if(direction == "Left"){
    head_x++;
  }
  if(direction == "Right"){
    head_x--;
  }
  if(direction == "Up"){
    head_y--;
  }
  if(direction == "Down"){
    head_y++;
  }
  window_check();

  if(button.isPressed()){
    Serial.println("The Button is pressed");
    flag =1;

  }
}

void window_check(){
  if(head_x > max_x){
    head_x = 0;
  }
  else if(head_x < 0){
    head_x = max_x;
  }
  else if(head_y > max_y){
    head_y = 0;
  }
  else if(head_y < 0){
    head_y = max_y;
  }
}