arduino 贪吃蛇代码

Arduino是一款开源的电子原型平台，可以用于制作各种互动项目。贪吃蛇是一款经典的游戏，可以通过Arduino来实现。

以下是一个简单的Arduino贪吃蛇代码示例：

#include <Adafruit_GFX.h>
#include <Adafruit_ILI9341.h>
#include <TouchScreen.h>

#define TFT_CLK 13
#define TFT_MISO 12
#define TFT_MOSI 11
#define TFT_CS 10
#define TFT_DC 9
#define TFT_RST 8

Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CLK, TFT_RST, TFT_CS, TFT_DC, TFT_MISO, TFT_MOSI);
TouchScreen ts = TouchScreen(7, A2, A1, A0, 300);

#define SNAKE_SIZE 10
#define FOOD_SIZE 10

int snakeX[SNAKE_SIZE];
int snakeY[SNAKE_SIZE];
int foodX, foodY;
int snakeLength;
int direction;
int score;

void setup() {
  tft.begin();
  tft.setRotation(3);
  tft.fillScreen(ILI9341_BLACK);
  randomSeed(analogRead(0));
  
  snakeLength = 1;
  snakeX = random(0, tft.width() / SNAKE_SIZE) * SNAKE_SIZE;
  snakeY = random(0, tft.height() / SNAKE_SIZE) * SNAKE_SIZE;
  
  foodX = random(0, tft.width() / FOOD_SIZE) * FOOD_SIZE;
  foodY = random(0, tft.height() / FOOD_SIZE) * FOOD_SIZE;
  
  direction = 0;
  score = 0;
}

void loop() {
  if (ts.touched()) {
    TSPoint p = ts.getPoint();
    int touchX = map(p.y, 0, 1023, 0, tft.width());
    int touchY = map(p.x, 0, 1023, 0, tft.height());
    
    if (touchX < snakeX[0] && direction != 1) {
      direction = 3;
    } else if (touchX > snakeX && direction != 3) {
      direction = 1;
    } else if (touchY < snakeY && direction != 2) {
      direction = 0;
    } else if (touchY > snakeY && direction != 0) {
      direction = 2;
    }
  }
  
  moveSnake();
  checkCollision();
  
  tft.fillRect(foodX, foodY, FOOD_SIZE, FOOD_SIZE, ILI9341_RED);
  
  for (int i = 0; i < snakeLength; i++) {
    tft.fillRect(snakeX[i], snakeY[i], SNAKE_SIZE, SNAKE_SIZE, ILI9341_GREEN);
  }
  
  delay(100);
}

void moveSnake() {
  for (int i = snakeLength - 1; i > 0; i--) {
    snakeX[i] = snakeX[i - 1];
    snakeY[i] = snakeY[i - 1];
  }
  
  switch (direction) {
    case 0:
      snakeY -= SNAKE_SIZE;
      break;
    case 1:
      snakeX += SNAKE_SIZE;
      break;
    case 2:
      snakeY += SNAKE_SIZE;
      break;
    case 3:
      snakeX -= SNAKE_SIZE;
      break;
  }
}

void checkCollision() {
  if (snakeX == foodX && snakeY == foodY) {
    snakeLength++;
    score++;
    
    foodX = random(0, tft.width() / FOOD_SIZE) * FOOD_SIZE;
    foodY = random(0, tft.height() / FOOD_SIZE) * FOOD_SIZE;
  }
  
  if (snakeX < 0 || snakeX >= tft.width() || snakeY < 0 || snakeY >= tft.height()) {
    gameOver();
  }
  
  for (int i = 1; i < snakeLength; i++) {
    if (snakeX[i] == snakeX && snakeY[i] == snakeY) {
      gameOver();
    }
  }
}

void gameOver() {
  tft.fillScreen(ILI9341_BLACK);
  tft.setCursor(tft.width() / 2 - 40, tft.height() / 2 - 10);
  tft.setTextColor(ILI9341_WHITE);
  tft.setTextSize(2);
  tft.println("Game Over!");
  
  while (true) {
    // 游戏结束，停止运行
  }
}

这段代码使用了Adafruit_GFX和Adafruit_ILI9341库来控制液晶屏显示，使用TouchScreen库来获取触摸输入。代码中定义了贪吃蛇的大小、食物的大小，以及蛇的位置、长度、方向和得分等变量。在`setup()`函数中进行初始化设置，在`loop()`函数中处理游戏逻辑，包括移动蛇、检测碰撞、显示蛇和食物等操作。当游戏结束时，调用`gameOver()`函数显示游戏结束信息并停止运行。