#include <Arduino.h>
#include <U8g2lib.h>

U8G2_SSD1306_128X64_NONAME_F_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);

void setup(void) {	

  u8g2.begin();  
  Serial.begin(115200);
  u8g2.setFont(u8g2_font_inb30_mr);
  		
  
  u8g2.setFontMode(0);		
}

unsigned long startTime = millis();
u8g2_uint_t offset;
u8g2_uint_t width;
u8g2_uint_t x ;

void strip(){
  
    int ran =random(0,64);
    x =offset; 
    do {
		x+=-1; 
    if (millis() - startTime >= 500){ 
		for(int Pix=0;Pix<ran;Pix++)
		{
      u8g2.setDrawColor(2);
    u8g2.drawBox(0,20,128,48);
    u8g2.setDrawColor(1);
		u8g2.drawLine(x, Pix+20, x, Pix+20);
    Serial.print("Movement value: ");
    Serial.println(x);
    Serial.print("Line length: ");
    Serial.println(Pix);
   // u8g2.sendBuffer();
    }
    
    startTime = millis();
    }
    } while( x < u8g2.getDisplayWidth() );
    
    offset+=1;					// scroll by one pixel
  if ( (u8g2_uint_t)offset < (u8g2_uint_t)-width )	
    offset = 0;  

}
void loop() {
  if (millis() - startTime >= 500){
  strip();
  u8g2.updateDisplay();
  startTime = millis();
  }
  
}