#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64

Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);

int eyeOffset = 0;
int eyeDirection = 1; // 1: ke kanan, -1: ke kiri
int maxOffset = 5;

void setup() {
  display.begin(SSD1306_SWITCHCAPVCC, 0x3C); // Alamat default
  display.clearDisplay();
  display.display();
}

void loop() {
  display.clearDisplay();

  // Mata kiri dan kanan (bergerak horizontal)
  display.fillCircle(40 + eyeOffset, 20, 5, SSD1306_WHITE);
  display.fillCircle(88 + eyeOffset, 20, 5, SSD1306_WHITE);

  // Mulut senyum (setengah lingkaran)
  display.drawCircle(64, 45, 12, SSD1306_WHITE);
  display.fillRect(52, 33, 25, 12, SSD1306_BLACK); // potong atas → jadi senyum

  display.display();
  delay(150); // Delay antar frame

  // Update posisi mata
  eyeOffset += eyeDirection;
  if (eyeOffset >= maxOffset || eyeOffset <= -maxOffset) {
    eyeDirection *= -1; // Balik arah
  }
}