Notes

#include <LedControl.h>

// Pin definitions
const int joystickXPin = A0;
const int joystickYPin = A1;
const int buttonPin = 3;

// Variables to store joystick values
int joystickXValue = 0;
int joystickYValue = 0;

// LED Matrix setup
LedControl lc = LedControl(12, 11, 10, 1); // Pins: DIN, CLK, CS

// Snake and apple positions
int snake[3][2] = {{4, 4}, {4, 5}, {4, 6}}; // Initial snake position
int apple[2] = {2, 2}; // Initial apple position

void setup() {
// Initialize serial communication
Serial.begin(9600);

// Initialize joystick pins
pinMode(joystickXPin, INPUT);
pinMode(joystickYPin, INPUT);

// Initialize button pin
pinMode(buttonPin, INPUT_PULLUP);

// Initialize LED matrix
lc.shutdown(0, false);
lc.setIntensity(0, 8);
lc.clearDisplay(0);
}

void loop() {
// Read joystick values
joystickXValue = analogRead(joystickXPin);
joystickYValue = analogRead(joystickYPin);

// Map joystick values to degrees
int angleX = map(joystickXValue, 0, 1023, 0, 360);
int angleY = map(joystickYValue, 0, 1023, 0, 360);

// Determine direction based on joystick angle
int dx = 0, dy = 0;
if (angleX >= 0 && angleX < 90) {
// Move up
dx = -1;
} else if (angleX >= 90 && angleX < 180) {
// Move right
dy = 1;
} else if (angleX >= 180 && angleX < 270) {
// Move down
dx = 1;
} else if (angleX >= 270 && angleX < 360) {
// Move left
dy = -1;
}

// Move the snake
for (int i = 2; i > 0; i--) {
snake[i][0] = snake[i-1][0];
snake[i][1] = snake[i-1][1];
}
snake[0][0] += dx;
snake[0][1] += dy;

// Check for collision with apple
if (snake[0][0] == apple[0] && snake[0][1] == apple[1]) {
// Generate new apple position
apple[0] = random(0, 8);
apple[1] = random(0, 8);
}

// Clear the display
lc.clearDisplay(0);

// Draw the snake
for (int i = 0; i < 3; i++) {
lc.setLed(0, snake[i][0], snake[i][1], true);
}

// Draw the apple
lc.setLed(0, apple[0], apple[1], true);

// Add a small delay to control the speed of the game
delay(200);
}