#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);

void setup() {
  Serial.begin(9600);

  if(!display.begin( SSD1306_PAGEADDR, SEEK_SET)) {
    Serial.println(F("SSD1306 allocation failed"));
    for(;;);
  }

  display.display();  // Clear the display
  delay(2000);
  display.clearDisplay();  // Clear the buffer
}

void loop() {
  display.clearDisplay();  // Clear the buffer

  static int16_t xPos = 0;
  static int16_t xSpeed = 2;

  // Draw a moving line
  display.drawLine(xPos, 0, xPos, SCREEN_HEIGHT - 1, WHITE);

  // Update position
  xPos += xSpeed;

  // Check boundaries
  if (xPos >= SCREEN_WIDTH || xPos <= 0) {
    xSpeed = -xSpeed;  // Reverse direction
  }

  display.display();  // Display the buffer

  delay(500);  // Adjust the delay for animation speed
}