#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
int pushLeft=12,pushUp=11,pushDown=10;
bool pushLeftRead,pushUpRead,pushDownRead;
int16_t x=0,y=0;

Adafruit_SSD1306 display(128,64,&Wire,-1);
String msg=" Enter the text to display :\n Press Red push button to scroll left\n Press Green push button to scroll up\n Press Blue push button to scroll down ";
String text;

void moveUp(){
  for(int i=y;i>=-15&&i<64;i-=2){
    display.setCursor(x,i);
    display.println(text);
    display.display();
    delay(100);
    display.clearDisplay();
    if (i==-14||i==-15){
      i=63;
    }
    y=i;
    pushUpRead=digitalRead(pushUp);
    
    if(pushUpRead==1){
      break;
    }
  }
}

void moveDown(){
  for(int i=y;i>=-15&&i<64;i+=2){
    display.setCursor(x,i);
    display.println(text);
    display.display();
    delay(100);
    display.clearDisplay();
    if (i==62||i==63){
      i=-14;
    }
    y=i;
    pushDownRead=digitalRead(pushDown);
    
    if(pushDownRead==1){
      break;
    }
  }
}

void moveLeft(){
    for(int i=x;i>=0&&i<123;i-=3){
    display.setCursor(i,y);
    display.println(text);
    display.display();
    delay(100);
    display.clearDisplay();
    if (i==0||i==1||i==2){
      i=122;
    }
    x=i;
    pushLeftRead=digitalRead(pushLeft);
    
    if(pushLeftRead==1){
      break;
    }
  }
}



void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  pinMode(pushLeftRead,INPUT);
  pinMode(pushUpRead,INPUT);
  pinMode(pushDownRead,INPUT);
  Serial.println(msg);
  while (Serial.available()==0){
  }
  text=Serial.readString();
  display.begin(SSD1306_SWITCHCAPVCC,0x3C);
  display.clearDisplay();
  display.setTextSize(2);
  display.setTextColor(WHITE);
  display.setCursor(x,y);
  
  display.println(text);
  display.display();
}

void loop() {
  // put your main code here, to run repeatedly:

pushLeftRead=digitalRead(pushLeft);
pushUpRead=digitalRead(pushUp);
pushDownRead=digitalRead(pushDown);
while(pushLeftRead==0){
  moveLeft();
  }
while(pushUpRead==0){
  moveUp();
  }
while(pushDownRead==0){
  moveDown();
  }
delay(500);
}