const int leds[] = { 13 , 12 , 11 , 10 , 9 , 8 , 7 , 6 , 5};
const int ledStripSize = sizeof(leds) / sizeof(leds[0]);

const int rows = 3;
const int cols = 3;

int posX = 0;
int posY = 0;


//creating a static array since dynamic arrays are not allow

int ledMatrix[rows][cols];

void setup() {
   Serial.begin(9600);
   for(int i = 0 ; i < ledStripSize ; i++ ){
      pinMode(leds[i] , OUTPUT); 
   } 

  //assigning
  int counter = 0;
  while(counter < ledStripSize){
      for(int x = 0; x < rows ; x++ ) {
        for(int y = 0 ; y < cols ; y++){
           ledMatrix[x][y] = leds[counter];
          //  Serial.println(ledMatrix[x][y]);
            counter++;
           }
        }
  }
  // blink(1000);

}

void loop() {
  int H[7][2] = {
  {0,0} , { 1 , 0 } , { 2 , 0} , 
  { 1 , 1 } , 
  {0,2} , { 1 , 2 } , { 2 , 2} 
};

int I[7][2] = { 
    {0,0} , { 0 , 1} , { 0 , 2},
      { 1 , 1 } , 
     {2,0} , { 2 , 1 } , { 2 , 2},
};




 for(int i = 0 ; i < 7 ; i++){ 
int x = H[i][0];
int y = H[i][1];
  digitalWrite(ledMatrix[x][y] , HIGH);
}
delay(1000);

   for(int i = 0 ; i < ledStripSize ; i++ ){
      digitalWrite(leds[i] , LOW);
   } 

   delay(500);

 for(int i = 0 ; i < 7 ; i++){ 
int x = I[i][0];
int y = I[i][1];
  digitalWrite(ledMatrix[x][y] , HIGH);
}
delay(1000);

   for(int i = 0 ; i < ledStripSize ; i++ ){
      digitalWrite(leds[i] , LOW);
   } 

   delay(1000);
}

void right(){
  if(posY < cols - 1){
      posY++;
  }
  blink(500);
}

void left(){
  if(posY > 0){
      posY--;
  }
  blink(500);
}

void up(){
  if(posX > 0){
   posX--;
  }
  blink(500);
}

void down(){
  if(posX < rows - 1){
     posX++;
  }
  blink(500);
}

void blink(int duration){
  digitalWrite(ledMatrix[posX][posY] , HIGH);
  delay(duration);
  Serial.println("X"); Serial.println(posX);
  Serial.println("Y"); Serial.println(posY);
  digitalWrite(ledMatrix[posX][posY] , LOW);
  delay(duration);
}


///let H