#include <LedControl.h>

// Define the pins for the joystick connections

 const int xAxisPin = A0; // Analog input pin for X-axis

 const int yAxisPin = A1; // Analog input pin for Y-axis

 const int buttonPin = 7; // Digital input pin for pushbutton

// the position of the joystick is read in a number between ~0 and ~800

 int xPosition = 400; // x position variable

 int yPosition = 400; // y position variable

 int buttonState = 1; // push button .... default is '1' when pushed, it goes to '0'

// Define the pins for the LED matrix controller

 const int DIN = 8; // 

 const int CS =  9; //

 const int CLK = 10; //

 int xLED = 3; // variable to hold the LED position of the 'cursor' across x

 int yLED = 3; // variable to hold the LED position of the 'cursor' across y

LedControl lc = LedControl(DIN,CLK,CS,1);

void setup() {

 // Initialize the button pin as an input with an internal pull-up resistor

 pinMode(buttonPin, INPUT_PULLUP);

 // Begin serial communication at a baud rate of 9600

 //Serial.begin(9600);

 lc.shutdown(0,false);       //The MAX72XX is in power-saving mode on startup

 lc.setIntensity(0,0);       // Set the brightness to maximum value

 lc.clearDisplay(0);          // and clear the display

}

void loop() {

 // Read the joystick position values

 xPosition = analogRead(xAxisPin);

 yPosition = analogRead(yAxisPin);

 // Read the button state (LOW when pressed due to pull-up resistor)

 buttonState = digitalRead(buttonPin);

 //turn off previously lit LED

 lc.setLed(0, xLED, yLED, false);

 if(buttonState==0) {

   xLED=3; yLED=3;

   for ( int i = 0; i < 8; i++) {

     lc.setRow(0,i,0) ;    

       delay(10);

   }

   delay(200);

 }

 if(xPosition<300 && xLED>0){ xLED = xLED -1 ;}

 if(xPosition>500 && xLED<7){ xLED = xLED +1 ;}

 if(yPosition<300 && yLED>0){ yLED = yLED -1 ;}

 if(yPosition>500 && yLED<7){ yLED = yLED +1 ;}

 // Print the joystick position values to the serial monitor

 /*Serial.print("X: ");

 Serial.print(xPosition);

 Serial.print(" | Y: ");

 Serial.print(yPosition);

 Serial.print(" | Button: ");

 Serial.print(buttonState);

 Serial.print(" | xLED: ");

 Serial.print(xLED);

 Serial.print(" | yLED: ");

 Serial.print(yLED);

 Serial.println();*/

 lc.setLed(0, xLED, yLED, true);

 delay(150);

}