#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
 
 
#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels
 
// Declaration for an SSD1306 display connected to I2C (SDA, SCL pins)
// The pins for I2C are defined by the Wire-library.
// On an arduino UNO:       A4(SDA), A5(SCL)
// On an arduino MEGA 2560: 20(SDA), 21(SCL)
// On an arduino LEONARDO:   2(SDA),  3(SCL), ...
#define OLED_RESET     -1 // Reset pin # (or -1 if sharing Arduino reset pin)
#define SCREEN_ADDRESS 0x3C ///< See datasheet for Address; 0x3D for 128x64, 0x3C for 128x32
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
 
//Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &SPI);
  //uint8_t w, uint8_t h, SPIClass *spi_ptr,
    //                               int8_t dc_pin, int8_t rst_pin, int8_t cs_pin,
      //                             uint32_t bitrate)
 
//reference state
int ref_eye_height = 40;
int ref_eye_width = 40;
int ref_space_between_eye = 10;
int ref_corner_radius = 10;
//current state of the eyes
int left_eye_height = ref_eye_height;
int left_eye_width = ref_eye_width;
int left_eye_x = 32;
int left_eye_y = 32;
int right_eye_x = 32+ref_eye_width+ref_space_between_eye;
int right_eye_y = 32;
int right_eye_height = ref_eye_height;
int right_eye_width = ref_eye_width;
 

// OLED Animation: circles menu 3
// Code auto-generated by https://wokwi.com/animator, graphics by icons8.com

#define FRAME_DELAY (42)
#define FRAME_WIDTH (32)
#define FRAME_HEIGHT (32)
#define FRAME_COUNT (sizeof(frames) / sizeof(frames[0]))
const byte PROGMEM frames[][128] = {
  {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,14,3,192,112,31,135,225,248,48,140,49,12,32,204,51,4,32,204,51,4,48,140,49,12,31,135,225,248,14,3,192,112,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
  {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,15,3,192,112,25,135,225,248,48,140,49,12,32,204,51,4,32,140,51,4,48,140,49,12,31,7,225,248,6,3,192,112,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
  {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,31,3,192,112,48,135,225,248,32,140,49,12,32,204,51,4,48,140,51,4,17,140,49,12,15,7,225,248,0,3,192,112,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
  {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,15,0,0,0,25,131,192,112,48,135,225,248,32,204,49,12,32,140,51,4,48,140,51,4,31,12,49,12,4,7,225,248,0,3,192,112,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
  {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,6,0,0,0,31,128,0,0,48,131,192,112,32,135,225,248,32,204,49,12,48,140,51,4,25,140,51,4,14,12,49,12,0,7,225,248,0,3,192,112,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
  {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,15,0,0,0,17,128,0,0,32,131,192,112,32,199,225,248,32,140,49,12,49,140,51,4,31,12,51,4,0,12,49,12,0,7,225,248,0,3,192,112,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
  {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,31,0,0,0,17,128,0,0,32,131,192,112,32,198,97,248,32,140,49,12,17,140,51,4,15,12,51,4,0,4,33,12,0,7,225,248,0,1,128,112,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
  {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,15,0,0,0,25,128,0,0,48,135,224,112,32,196,33,248,32,140,49,12,48,136,19,4,31,12,51,4,6,6,97,12,0,3,193,248,0,0,0,112,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
  {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,15,3,192,0,25,134,96,112,48,140,49,248,32,200,17,12,32,140,51,4,48,132,35,4,31,7,225,12,4,0,1,248,0,0,0,112,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
  {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,128,0,0,7,224,0,14,4,32,112,31,140,49,248,48,140,49,12,32,204,51,4,32,198,99,4,48,131,193,12,31,128,1,248,14,0,0,112,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
  {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,3,192,0,0,6,96,0,0,12,48,112,4,8,17,248,31,12,49,12,48,132,35,4,32,131,195,4,32,192,1,12,48,128,1,248,25,128,0,112,15,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
  {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,3,192,0,0,4,32,0,0,12,48,112,0,8,17,152,6,12,49,12,31,6,99,4,48,131,193,4,32,128,1,12,32,192,1,248,48,128,0,96,25,128,0,0,15,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
  {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,3,192,0,0,6,96,0,0,12,48,248,0,12,49,136,0,12,49,4,15,4,35,4,17,135,225,4,32,129,129,136,32,192,0,248,32,128,0,0,17,128,0,0,31,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
  {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,3,192,240,0,6,97,152,0,12,49,12,0,12,51,4,31,12,49,4,49,132,33,12,32,135,224,248,32,193,128,32,32,128,0,0,17,128,0,0,15,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
  {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,112,0,0,1,248,0,3,193,12,0,7,225,4,14,12,51,4,25,140,49,12,48,140,49,216,32,204,48,112,32,135,224,0,48,131,192,0,31,128,0,0,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
  {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,240,0,0,1,136,0,0,1,4,4,1,131,4,31,7,225,4,48,132,33,136,32,140,48,248,32,204,48,0,48,140,48,0,25,134,96,0,15,3,192,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
  {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,248,0,0,1,136,0,0,1,4,15,0,3,4,17,129,129,4,48,135,225,136,32,196,32,240,32,140,48,0,48,140,48,0,31,12,48,0,0,6,96,0,0,3,192,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
  {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,240,0,0,1,152,6,0,1,12,31,0,3,4,48,128,1,4,32,131,193,12,32,198,96,248,48,140,48,32,25,136,16,0,15,12,48,0,0,4,32,0,0,3,192,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
  {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,240,14,0,1,152,31,128,1,12,48,128,3,4,32,195,193,4,32,196,33,12,48,140,48,248,31,136,16,32,14,12,48,0,0,6,96,0,0,3,192,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
  {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,14,0,0,96,31,128,1,248,48,131,193,12,32,198,97,4,32,204,51,4,48,140,49,12,31,140,49,216,14,4,32,112,0,7,224,0,0,1,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
  {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,14,0,0,0,31,128,0,0,48,135,224,248,32,196,33,140,32,204,49,4,48,136,19,4,31,140,49,4,14,6,97,136,0,3,192,240,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
  {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,14,0,0,0,31,131,192,0,48,134,96,32,32,204,48,248,32,200,17,12,48,140,49,4,31,132,35,4,14,7,225,12,0,0,1,152,0,0,0,240,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
  {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,14,1,128,0,31,135,224,0,48,132,32,0,32,204,48,240,32,204,49,136,48,140,49,4,31,134,99,4,14,3,193,4,0,0,1,136,0,0,0,248,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
  {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,14,3,192,0,31,135,224,0,48,140,48,0,32,204,48,248,32,204,49,136,48,140,49,4,31,135,227,4,14,3,193,4,0,0,1,136,0,0,0,240,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
  {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,14,3,192,0,31,135,224,0,48,140,48,240,32,204,49,152,32,204,49,12,48,140,51,4,31,135,225,4,14,3,193,12,0,0,1,248,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
  {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,14,3,192,0,31,135,224,112,48,140,49,248,32,204,49,12,32,204,49,4,48,140,51,4,31,135,225,12,14,3,193,216,0,0,0,112,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
  {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,14,3,192,0,31,135,224,248,48,140,49,136,32,204,49,4,32,204,51,4,48,140,49,4,31,135,225,136,14,3,192,240,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
  {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,14,3,192,96,31,135,225,248,48,140,49,12,32,204,49,4,32,204,51,4,48,140,49,12,31,135,225,216,14,3,192,112,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}
};

 

void draw_eyes(bool update=true)
{
    display.clearDisplay();        
    //draw from center
    int x = int(left_eye_x-left_eye_width/2);
    int y = int(left_eye_y-left_eye_height/2);
    display.fillRoundRect(x,y,left_eye_width,left_eye_height,ref_corner_radius,SSD1306_WHITE);
    x = int(right_eye_x-right_eye_width/2);
    y = int(right_eye_y-right_eye_height/2);
    display.fillRoundRect(x,y,right_eye_width,right_eye_height,ref_corner_radius,SSD1306_WHITE);    
    if(update)
    {
      display.display();
    }
   
}
 
 
void center_eyes(bool update=true)
{
  //move eyes to the center of the display, defined by SCREEN_WIDTH, SCREEN_HEIGHT
  left_eye_height = ref_eye_height;
  left_eye_width = ref_eye_width;
  right_eye_height = ref_eye_height;
  right_eye_width = ref_eye_width;
 
  left_eye_x = SCREEN_WIDTH/2-ref_eye_width/2-ref_space_between_eye/2;
  left_eye_y = SCREEN_HEIGHT/2;
  right_eye_x = SCREEN_WIDTH/2+ref_eye_width/2+ref_space_between_eye/2;
  right_eye_y = SCREEN_HEIGHT/2;
 
  draw_eyes(update);
}
 
void blink(int speed=12)
{
  draw_eyes();
 
 
  for(int i=0;i<3;i++)
  {
    left_eye_height = left_eye_height-speed;
    right_eye_height = right_eye_height-speed;    
    draw_eyes();
    delay(1);
  }
  for(int i=0;i<3;i++)
  {
    left_eye_height = left_eye_height+speed;
    right_eye_height = right_eye_height+speed;
   
    draw_eyes();
    delay(1);
  }
}
 
 
void sleep()
{
  left_eye_height = 2;
  right_eye_height = 2;
  draw_eyes(true);  
}
void wakeup()
{
 
  sleep();
 
  for(int h=0; h <= ref_eye_height; h+=2)
  {
    left_eye_height = h;
    right_eye_height = h;
    draw_eyes(true);
  }
 
 
}
 
void loading()
{
  display.clearDisplay(); 
  int frame = 0;
  for(int i=0;i<96;i++){
  display.drawBitmap(48, 16, frames[frame], FRAME_WIDTH, FRAME_HEIGHT, WHITE);
  display.display();
  display.clearDisplay();
  frame = (frame + 1) % FRAME_COUNT;
  delay(1);
  }
  
}
 
void happy_eye()
{
  center_eyes(false);
  //draw inverted triangle over eye lower part
  int offset = ref_eye_height/2;
  for(int i=0;i<10;i++)
  {
    display.fillTriangle(left_eye_x-left_eye_width/2-1, left_eye_y+offset, left_eye_x+left_eye_width/2+1, left_eye_y+5+offset, left_eye_x-left_eye_width/2-1,left_eye_y+left_eye_height+offset,SSD1306_BLACK);
    //display.fillRect(left_eye_x-left_eye_width/2-1, left_eye_y+5, left_eye_width+1, 20,SSD1306_BLACK);
 
    display.fillTriangle(right_eye_x+right_eye_width/2+1, right_eye_y+offset, right_eye_x-left_eye_width/2-1, right_eye_y+5+offset, right_eye_x+right_eye_width/2+1,right_eye_y+right_eye_height+offset,SSD1306_BLACK);
    //display.fillRect(right_eye_x-right_eye_width/2-1, right_eye_y+5, right_eye_width+1, 20,SSD1306_BLACK);  
    offset -= 2;
    display.display();
    delay(1);
  }
 
 
  display.display();
  delay(1000);
}
 
void saccade(int direction_x, int direction_y)
{
  //quick movement of the eye, no size change. stay at position after movement, will not move back,  call again with opposite direction
  //direction == -1 :  move left
  //direction == 1 :  move right
 
  int direction_x_movement_amplitude = 8;
  int direction_y_movement_amplitude = 6;
  int blink_amplitude = 8;
 
  for(int i=0;i<1;i++)
  {
    left_eye_x+=direction_x_movement_amplitude*direction_x;
    right_eye_x+=direction_x_movement_amplitude*direction_x;    
    left_eye_y+=direction_y_movement_amplitude*direction_y;
    right_eye_y+=direction_y_movement_amplitude*direction_y;    
   
    right_eye_height-=blink_amplitude;
    left_eye_height-=blink_amplitude;
    draw_eyes();
    delay(1);
  }
 
  for(int i=0;i<1;i++)
  {
    left_eye_x+=direction_x_movement_amplitude*direction_x;
    right_eye_x+=direction_x_movement_amplitude*direction_x;    
    left_eye_y+=direction_y_movement_amplitude*direction_y;
    right_eye_y+=direction_y_movement_amplitude*direction_y;
 
    right_eye_height+=blink_amplitude;
    left_eye_height+=blink_amplitude;
 
    draw_eyes();
    delay(1);
  }
 
}
 
void move_right_big_eye()
{
  move_big_eye(1);
}
void move_left_big_eye()
{
  move_big_eye(-1);
}
void move_big_eye(int direction)
{
  //direction == -1 :  move left
  //direction == 1 :  move right
 
  int direction_oversize = 1;
  int direction_movement_amplitude = 2;
  int blink_amplitude = 5;
 
  for(int i=0;i<3;i++)
  {
    left_eye_x+=direction_movement_amplitude*direction;
    right_eye_x+=direction_movement_amplitude*direction;    
    right_eye_height-=blink_amplitude;
    left_eye_height-=blink_amplitude;
    if(direction>0)
    {
      right_eye_height+=direction_oversize;
      right_eye_width+=direction_oversize;
    }else
    {
      left_eye_height+=direction_oversize;
      left_eye_width+=direction_oversize;
    }
 
    draw_eyes();
    delay(1);
  }
  for(int i=0;i<3;i++)
  {
    left_eye_x+=direction_movement_amplitude*direction;
    right_eye_x+=direction_movement_amplitude*direction;
    right_eye_height+=blink_amplitude;
    left_eye_height+=blink_amplitude;
    if(direction>0)
    {
      right_eye_height+=direction_oversize;
      right_eye_width+=direction_oversize;
    }else
    {
      left_eye_height+=direction_oversize;
      left_eye_width+=direction_oversize;
    }
    draw_eyes();
    delay(1);
  }
 
  delay(1000);
 
  for(int i=0;i<3;i++)
  {
    left_eye_x-=direction_movement_amplitude*direction;
    right_eye_x-=direction_movement_amplitude*direction;    
    right_eye_height-=blink_amplitude;
    left_eye_height-=blink_amplitude;
    if(direction>0)
    {
      right_eye_height-=direction_oversize;
      right_eye_width-=direction_oversize;
    }else
    {
      left_eye_height-=direction_oversize;
      left_eye_width-=direction_oversize;
    }
    draw_eyes();
    delay(1);
  }
  for(int i=0;i<3;i++)
  {
    left_eye_x-=direction_movement_amplitude*direction;
    right_eye_x-=direction_movement_amplitude*direction;    
    right_eye_height+=blink_amplitude;
    left_eye_height+=blink_amplitude;
    if(direction>0)
    {
      right_eye_height-=direction_oversize;
      right_eye_width-=direction_oversize;
    }else
    {
      left_eye_height-=direction_oversize;
      left_eye_width-=direction_oversize;
    }
    draw_eyes();
    delay(1);
  }
 
 
  center_eyes();
 
 
}
 
void setup() {
  // put your setup code here, to run once:
 
  // SSD1306_SWITCHCAPVCC = generate display voltage from 3.3V internally
  display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS);
 
 pinMode(2,INPUT_PULLUP);
  //for usb communication  
  Serial.begin(115200);
 
 
 
  // Show initial display buffer contents on the screen --
  // the library initializes this with an Adafruit splash screen.
 
  // Clear the buffer
  display.clearDisplay();
 
  display.setTextSize(1);             // Normal 1:1 pixel scale
  display.setTextColor(SSD1306_WHITE);        // Draw white text
  display.setCursor(0,0);             // Start at top-left corner
  display.println(F(" "));
  display.display();
  delay(300);
  sleep();
 
 
  // Draw a single pixel in white
  //display.drawPixel(10, 10, SSD1306_WHITE);

 wakeup();
  delay(300);  
 center_eyes(true);
 delay(300);  
}

void loop() {
 if(digitalRead(2) == LOW){
move_right_big_eye();
delay(300);

delay(300);
blink(10);
delay(300);
blink(20);
delay(300);

delay(300);
blink(10);
delay(300);
blink(20);
delay(300);
move_left_big_eye();
delay(300);
blink(10);
delay(300);
blink(20);
delay(300);
happy_eye();      
delay(300);

 
loading();
delay(300);
}
 while(digitalRead(2) == HIGH){
  blink(10);
delay(300);
blink(20);
delay(5500);
 }
 
 
 
   
 
 

  



       
             }