#include <TinyWireM.h>
#include <Tiny4kOLED.h>
#include <EEPROM.h>

String compchoice;
int score = 0;
int topScoreB;

/*
  Red Button stands for "Rock".
  Green Button stands for "Paper".
  Blue Button stands for "Scissor".
*/

void setup() {
  pinMode(PB1, INPUT_PULLUP);
  pinMode(PB3, INPUT_PULLUP);
  pinMode(PB4, INPUT_PULLUP);

  oled.begin(128, 64, sizeof(tiny4koled_init_128x64br), tiny4koled_init_128x64br);

  oled.setFont(FONT8X16); //Setting the Font as 8x16

  oled.clear(); //Clearing the OLED Display
  oled.on(); //Switching on the OLED Display

  randomSeed(analogRead(0));
}

void loop() {
  game(); //Calling the "game()" function
}

void game() {
  int i = 1; 
  while (i<=5) {
    oled.setCursor(0, 1);
    oled.print(F("Top Score is " ));
    oled.print(topScoreB);
    oled.setCursor(0, 3);
    oled.print(F("Current Score is " ));
    oled.print(score);
    delay(2000);
    oled.clear();
    oled.setCursor(0,1);
    oled.print(F("Rock, Paper, Scissors?"));
    delay(2000);
    oled.clear();
    int r = random(1, 4);
    if (r == 1) {
      compchoice = "Rock";
    } else {
      if (r == 2) {
        compchoice = "Paper";
      } else {
        if (r == 3) {
          compchoice = "Scissors";
        }
      }
    }

    int pb1 = digitalRead(PB1);
    int pb3 = digitalRead(PB3);
    int pb4 = digitalRead(PB4);
    oled.setCursor(0, 1);

    while (pb3 == LOW) {
      if (compchoice == "Rock") {
        oled.print("Computer entered Rock. ");
        oled.println("You Won:)");
        delay(3000);
        oled.clear();
        score++;
        game();
      } else {
        if (compchoice == "Paper") {
          oled.print("Computer entered Paper. ");
          oled.println("Tie!!");
          delay(3000);
          oled.clear();
          game();
        } else {
          if (compchoice == "Scissors") {
            oled.print("Computer entered Scissors. ");
            oled.println("You Lost:(");
            delay(3000);
            oled.clear();
            score -= 1;
            game();
          }
        }
      }
    };

    while (pb1 == LOW) {
      if (compchoice == "Rock") {
        oled.print("Computer entered Rock. ");
        oled.println("Tie!!");
        delay(3000);
        oled.clear();
        game();
      } else {
        if (compchoice == "Paper") {
          oled.print("Computer entered Paper. ");
          oled.println("You Lost:(");
          delay(3000);
          oled.clear();
          score -= 1;
          game();
        } else {
          if (compchoice == "Scissors") {
            oled.print("Computer entered Scissors. ");
            oled.println("You Won:)");
            delay(3000);
            oled.clear();
            score++;
            game();
          }
        }
      }
    };

    while (pb4 == LOW) {
      if (compchoice == "Rock") {
        oled.print("Computer entered Rock. ");
        oled.println("You Lost:(");
        delay(3000);
        oled.clear();
        score -= 1;
        game();
      } else {
        if (compchoice == "Paper") {
          oled.print("Computer entered Paper. ");
          oled.println("You Won:)");
          delay(3000);
          oled.clear();
          score++;
          game();
        } else {
          if (compchoice == "Scissors") {
            oled.print("Computer entered Scissors. ");
            oled.println("Tie!!");
            delay(3000);
            oled.clear();
            game();
          }
        }
      }
    }
    topScoreB = EEPROM.read(0);
    topScoreB = topScoreB << 8;
    topScoreB = topScoreB |  EEPROM.read(1);

    if (score > topScoreB) { 
      topScoreB = score;
      EEPROM.write(1,score & 0xFF); 
      EEPROM.write(0,(score>>8) & 0xFF); 
    };
  }  
}