arduino贪吃蛇代码

以下是一个简单的Arduino贪吃蛇代码，需要连接一个8x8的LED矩阵和一个Joystick模块：

#include <Adafruit_GFX.h>
#include <Adafruit_NeoMatrix.h>
#include <Adafruit_NeoPixel.h>

#define PIN 6

Adafruit_NeoMatrix matrix = Adafruit_NeoMatrix(8, 8, PIN,
  NEO_MATRIX_TOP     + NEO_MATRIX_LEFT +
  NEO_MATRIX_ROWS + NEO_MATRIX_PROGRESSIVE,
  NEO_GRB            + NEO_KHZ800);

const int joystick_x = A0;
const int joystick_y = A1;
int snake_x[64];
int snake_y[64];
int snake_length = 4;
int snake_dir = 0;
int snake_speed = 200;
int food_x = 0;
int food_y = 0;

void setup() {
  matrix.begin();
  matrix.setTextWrap(false);
  matrix.setBrightness(40);
  matrix.setTextColor(matrix.Color(255, 0, 0));
  randomSeed(analogRead(0));
  for(int i = 0; i < snake_length; i++) {
    snake_x[i] = 3 + i;
    snake_y[i] = 3;
  }
  spawn_food();
}

void loop() {
  int joystick_x_val = analogRead(joystick_x);
  int joystick_y_val = analogRead(joystick_y);
  if(joystick_x_val < 100) {
    snake_dir = 2;
  } else if(joystick_x_val > 900) {
    snake_dir = 0;
  } else if(joystick_y_val < 100) {
    snake_dir = 3;
  } else if(joystick_y_val > 900) {
    snake_dir = 1;
  }
  move_snake();
  delay(snake_speed);
}

void move_snake() {
  int new_x = snake_x[0];
  int new_y = snake_y[0];
  if(snake_dir == 0) {
    new_x++;
  } else if(snake_dir == 1) {
    new_y++;
  } else if(snake_dir == 2) {
    new_x--;
  } else if(snake_dir == 3) {
    new_y--;
  }
  if(new_x < 0) {
    new_x = 7;
  } else if(new_x > 7) {
    new_x = 0;
  }
  if(new_y < 0) {
    new_y = 7;
  } else if(new_y > 7) {
    new_y = 0;
  }
  for(int i = snake_length - 1; i > 0; i--) {
    snake_x[i] = snake_x[i - 1];
    snake_y[i] = snake_y[i - 1];
  }
  snake_x[0] = new_x;
  snake_y[0] = new_y;
  matrix.clear();
  for(int i = 0; i < snake_length; i++) {
    matrix.drawPixel(snake_x[i], snake_y[i], matrix.Color(0, 255, 0));
  }
  if(snake_x[0] == food_x && snake_y[0] == food_y) {
    snake_length++;
    spawn_food();
  }
  matrix.drawPixel(food_x, food_y, matrix.Color(255, 0, 0));
  matrix.show();
}

void spawn_food() {
  food_x = random(0, 8);
  food_y = random(0, 8);
}

注意：这个代码可能需要根据你的硬件配置进行修改，例如PIN号和模块引脚。