#include <Wire.h> 
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,20,4);
//Red = Paper (1)
//Green = Scissors (2)
//Blue = Rock (3)
int randNum;
int Rbutton = 7;
int Gbutton = 6;
int Bbutton = 5;
int Rbutton_state = 0;
int Gbutton_state = 0;
int Bbutton_state = 0;
void setup() {
  // put your setup code here, to run once:
  pinMode(Rbutton, INPUT);
  pinMode(Gbutton, INPUT);
  pinMode(Bbutton, INPUT);
  lcd.init();
  lcd.backlight();
  Serial.begin(9600);
  randomSeed(analogRead(0));
}

void loop() {
  lcd.setCursor(1,0);
  lcd.print("Jack N' Poy");
  lcd.setCursor(1,1);
  lcd.print("PRESS A BUTTON");
  Rbutton_state = digitalRead(Rbutton);
  Gbutton_state = digitalRead(Gbutton);
  Bbutton_state = digitalRead(Bbutton);
  //PAPER
  if(Rbutton_state == HIGH)
  {
  lcd.clear();
  randNum = random(1,4);
  Serial.println(randNum);
  switch(randNum)
  {
    case 1:
    Serial.println("PLAYER:PAPER");
    Serial.println("COMPUTER:PAPER");
    Serial.println("DRAW");
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("P:PAPER C:PAPER");
    lcd.setCursor(0,1);
    lcd.print("DRAW");
    break;
    case 2:
    Serial.println("PLAYER:PAPER");
    Serial.println("COMPUTER:SCISSORS");
    Serial.println("COMPUTER WINS");
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("P:PAPER C:SCISS");
    lcd.setCursor(0,1);
    lcd.print("YOU LOSE");
    break;
    case 3:
    Serial.println("PLAYER:PAPER");
    Serial.println("COMPUTER:ROCK");
    Serial.println("PLAYER WINS");
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("P:PAPER C:ROCK");
    lcd.setCursor(0,1);
    lcd.print("YOU WIN");
    break;
  }
  
  delay(1000);
  lcd.clear();
  }
  //SCISSOR
 if(Gbutton_state == HIGH)
  {
  lcd.clear();
  randNum = random(1,4);
  Serial.println(randNum);
  switch(randNum)
  {
    case 1:
    Serial.println("PLAYER:SCISSORS");
    Serial.println("COMPUTER:SCISSORS");
    Serial.println("DRAW");
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("P:SCISSOR C:SCISSOR");
    lcd.setCursor(0,1);
    lcd.print("DRAW");
    break;
    case 2:
    Serial.println("PLAYER:SCISSORS");
    Serial.println("COMPUTER:PAPER");
    Serial.println("COMPUTER WINS");
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("P:SCISS C:PAPER");
    lcd.setCursor(0,1);
    lcd.print("YOU WIN");
    break;
    case 3:
    Serial.println("PLAYER:PAPER");
    Serial.println("COMPUTER:ROCK");
    Serial.println("PLAYER WINS");
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("P:PAPER C:ROCK");
    lcd.setCursor(0,1);
    lcd.print("YOU WIN");
    break;
  }
  
  delay(1000);
  lcd.clear();
  }

//ROCK
   if(Bbutton_state == HIGH)
  {
  lcd.clear();
  randNum = random(1,4);
  Serial.println(randNum);
  switch(randNum)
  {
    case 1:
    Serial.println("PLAYER:ROCK");
    Serial.println("COMPUTER:ROCK");
    Serial.println("DRAW");
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("P:ROCK C:ROCK");
    lcd.setCursor(0,1);
    lcd.print("DRAW");
    break;
    case 2:
    Serial.println("PLAYER:ROCK");
    Serial.println("COMPUTER:SCISSORS");
    Serial.println("PLAYER WINS");
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("P:ROCK C:SCISS");
    lcd.setCursor(0,1);
    lcd.print("YOU WIN");
    break;
    case 3:
    Serial.println("PLAYER:ROCK");
    Serial.println("COMPUTER:PAPER");
    Serial.println("COMPUTER WINS");
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("P:ROCK C:PAPER");
    lcd.setCursor(0,1);
    lcd.print("YOU LOSE");
    break;
  }
  
  delay(1000);
  lcd.clear();
  }

}