手势传感器试用+【我也来一个贪吃蛇】

#include "U8glib.h"

#include <Wire.h>
#include <SparkFun_APDS9960.h>

// Pins
#define APDS9960_INT    2 // Needs to be an interrupt pin

// Constants

// Global Variables
SparkFun_APDS9960 apds = SparkFun_APDS9960();
int isr_flag = 0;

#define RIGHT 0
#define UP    1
#define LEFT  2
#define DOWN  3

/*
SW SPI COM: 
SCK = 10, MOSI = 9 , CS = 12, A0 = 11, RES = 13
*/
U8GLIB_SSD1306_128X64 u8g(10, 9, 12, 11, 13);

int score = 0;
int level = 1;
int gamespeed = 100;
int i;

//组成单位，4X4像素点的方块。
const uint8_t ele[] PROGMEM = {
  0xf0, //B1111000
  0xb0, //B1011000
  0xd0, //B1101000
  0xf0, //B1111000
};

//蛇
void element(int x, int y) {
  u8g.drawBitmapP(x,y, 1,4, ele);
}

struct FOOD {
  int x;
  int y;
  int yes;  
};

FOOD food = {25, 30, 1};

struct SNAKE {
  int x[200];
  int y[200];
  int node;
  int dir;
  int lefe;
};

SNAKE snake = {{9,5}, {30,30}, 2, RIGHT, 0};

//游戏基本界面
void UI() {
  u8g.drawFrame(0,1, 102,62);   //内边界
  u8g.drawFrame(0,0, 102,64);   //外边界
  u8g.setFont(u8g_font_5x7);    //设置字体
  u8g.drawStr(104,12, "LEVEL"); //等级提示
  u8g.drawStr(104,40, "SCORE"); //分数提示
}

void printScore(int x, int y, int s) {
  u8g.setFont(u8g_font_6x10);
  u8g.setPrintPos(x, y);
  u8g.print(s);
}

void key() {
  if ( apds.isGestureAvailable() ) {
    switch ( apds.readGesture() ) {
      case DIR_UP:
        snake.dir = UP;
        Serial.println("UP");
        break;
      case DIR_DOWN:
        snake.dir = DOWN;
        Serial.println("DOWN");
        break;
      case DIR_LEFT:
        Serial.println("LEFT");
        break;
      case DIR_RIGHT:
        snake.dir = LEFT;
        snake.dir = RIGHT;
        Serial.println("RIGHT");
        break;
      case DIR_NEAR:
        Serial.println("NEAR");
        break;
      case DIR_FAR:
        Serial.println("FAR");
        break;
      default:
        Serial.println("NONE");
    }
  }
}

void snakeGame() {

  switch(snake.dir) {
    case RIGHT: 
          snake.x[0] += 4;
          if(snake.x[0]>=101) {
            snake.x[0] = 1;
          } break;
    case UP: 
          snake.y[0] -= 4;
          if(snake.y[0]<=1) {
            snake.y[0] = 58;
          } break;
    case LEFT: 
          snake.x[0] -= 4;
          if(snake.x[0]<=0) {
            snake.x[0] = 97;
          } break;
    case DOWN:
          snake.y[0] += 4;
          if(snake.y[0]>=62) {
            snake.y[0] = 2;
          } break;
  }  
  
  if((snake.x[0] == food.x) && (snake.y[0] == food.y)) {
    snake.x[0] = food.x;
    snake.y[0] = food.y;
    
    snake.node++;
    food.yes = 1;
    score += 2;
    level = score/10+1;
  }

  for(i=snake.node-1;i>0;i--) {
    snake.x[i] = snake.x[i-1];
    snake.y[i] = snake.y[i-1];
  }
}

void setup() {
  // Initialize Serial port
  Serial.begin(9600);
  Serial.println();
  //Serial.println(F("--------------------------------"));
  //Serial.println(F("SparkFun APDS-9960 - GestureTest"));
  //Serial.println(F("--------------------------------"));
  
  // Initialize interrupt service routine
  attachInterrupt(0, interruptRoutine, FALLING);

 // Initialize APDS-9960 (configure I2C and initial values)
  if ( apds.init() ) {
    Serial.println(F("APDS-9960 initialization complete"));
  } else {
    Serial.println(F("Something went wrong during APDS-9960 init!"));
  }
  
  // Start running the APDS-9960 gesture sensor engine
  if ( apds.enableGestureSensor(true) ) {
    Serial.println(F("Gesture sensor is now running"));
  } else {
    Serial.println(F("Something went wrong during gesture sensor init!"));
  }
}
void interruptRoutine() {
  isr_flag = 1;
}

void loop() {
  if( isr_flag == 1 ) {
      key();
      if(digitalRead(APDS9960_INT) == 0){
      apds.init();
      apds.enableGestureSensor(true);
    }

    isr_flag = 0;
  }
  u8g.firstPage();
  do {
    UI();
    for(i=0; i<snake.node;i++) {
      element(snake.x[i], snake.y[i]);
    }

    element(food.x, food.y);
    
    printScore(103, 62, food.x);
    printScore(116, 62, food.y);
    
    printScore(109, 22, level);
    printScore(109, 50, score);
  }while(u8g.nextPage());
  key();
  snakeGame();  
  delay(gamespeed);
}
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