/* Great Day!
 *  This is my version of Arduino Paper Rock Scissors using only an LCD 20x4 and a few buttons and resistors for additional hardware.
 *  I created this game because I wanted to explore my creativity on the Arduino and I do not see that anyone else has produced this game for this platform. So it's a bit unique too.
 *  I hope you enjoy playing it as much as I have had designing it.
 *  I think you will find I copy / paste a lot of code from example codes. I'm not an Arduino Pro, more like an Amateurino.
 * 
 * Versions
 * LCD_Paper_Rock_Scissors1 - 8/19/2018 - First iteration mostly trying to learn how to set up and use LCD and Buttons. Very buggy. Will not load.
 * LCD_Paper_Rock_Scissors2 - 9/21/2018 - Fleshed out most of the Flow Chart. Still full of bugs and will not load.
 * LCD_Paper_Rock_Scissors3 - 9/23/2018 - Flow Chart complete and updated. Program gets stuck on Arduino random number generator; turn of and it always picks Paper or Rock or Scissors but never a different choice.
 * LCD_Paper_Rock_Scissors4 - 9/27/2018 - Bug fixes and new Arduino random number generator. Now Arduino gets stuck on person's selection and forgets what person selected. Problems with Scoring.
 * LCD_Paper_Rock_Scissors5 - 10/3/2018 - Arduino can be set to hide its selections instead of always showing them (debug / cheat mode). Comments where to mod code for real play. "New Math" for Paper Rock Scissors, streamlines it, and it works. Added a fifth button for additional future game possibilities, which means had to recalculate the scale of buttons and their ranges. Installed everything in a capachino box during the month of November.
 * LCD_Paper_Rock_Scissors6 - 12/12/2018 - Better display instructions after having a couple people try it out. Some people tap buttons, some hold buttons. Arduino needs you to hold buttons for 1-3 seconds. Best game flow.
 * LCD_Paper_Rock_Scissors7 - 1/2/2019 - Improved graphics and give the user a choice of playing a Real game or with Cheat Mode on.  
 * 
 *  David England
 *  8/19/2018
 */


   // Set up Libraries
#include "Wire.h" // For I2C
#include "LCD.h" // For LCD
#include "LiquidCrystal_I2C.h" // Added library*
//Set the pins on the I2C chip used for LCD connections
//ADDR,EN,R/W,RS,D4,D5,D6,D7
LiquidCrystal_I2C lcd(0x3f,2,1,0,4,5,6,7); // 0x3F is the default I2C bus address of my backpack, yours might be different


// declare variables
int buTTon; //For reading buttons
int PlayerScore; //USed to keep track of Player Score 
int ArduinoScore; //USed to keep track of Arduino Score 
int PlayerPRS; // Hold Strings: Paper, Rock, or Scissors for LCD printing
int ArduinoPRS; // Hold Strings: Paper, Rock, or Scissors for LCD printing
//int randNumber; // Used for creating random numbers


void setup() {
delay(500);
   // Set up LCD module and Splash Screen
   lcd.begin(20,4); // 20 x 4 LCD module
   lcd.setBacklightPin(3,POSITIVE); // BL, BL_POL
   lcd.setBacklight(HIGH);
   lcd.clear();
   lcd.setCursor(0,0);
   lcd.print("");
   lcd.setCursor(0,1);
   lcd.print("");
   lcd.setCursor(0,2);
   lcd.print("");
   lcd.setCursor(0,3);
   lcd.print("PAPER ROCK SCISSORS!");
  delay(1000);  
   lcd.setCursor(0,0);
   lcd.print("");
   lcd.setCursor(0,1);
   lcd.print("");
   lcd.setCursor(0,2);
   lcd.print("PAPER ROCK SCISSORS!");
   lcd.setCursor(0,3);
   lcd.print("[]     O    8<     ");
  delay(1000);  
   lcd.setCursor(0,0);
   lcd.print("");
   lcd.setCursor(0,1);
   lcd.print("PAPER ROCK SCISSORS!");
   lcd.setCursor(0,2);
   lcd.print(" []     O    8=    ");
   lcd.setCursor(0,3);
   lcd.print("1 Player vs Arduino ");
  delay(1000);  
   lcd.setCursor(0,0);
   lcd.print("PAPER ROCK SCISSORS!");
   lcd.setCursor(0,1);
   lcd.print("  []     O    8<   ");
   lcd.setCursor(0,2);
   lcd.print("1 Player vs Arduino ");
   lcd.setCursor(0,3);
   lcd.print("David England, 2018 ");
  delay(5000);  


/* 
 * Buttons for Paper Rock Scissors and maybe Others (Button & Resistor stack)
 * A set of push buttons and resistors that act as a voltage divider to feed a value to the analog pin. 
 * That value represents the user value and takes care of anything strange like too many pins being selected.
 * Resistors 1k from + to analogue pin, a series of low Ohms (like 200 ea) from + to - with a button going to each joint, the other button pin to analog pin.
 * With 5 buttons you should get (check serial monitor)
 * B1 200 Ohms
 * B2 400
 * B3 550
 * B4 700
 * B5 850
 * NA 1023
 * 
 * Descision can be weighed by If/Then <300, <450, <600, <800, <900 ignore anything else. 
*/


// initialize variables - give them some values ... of 0
buTTon = 0; //For reading buttons
PlayerScore = 0; //USed to keep track of Player Score 
ArduinoScore = 0; //USed to keep track of Arduino Score 
PlayerPRS = 0; // Hold Strings: Paper, Rock, or Scissors for LCD printing
ArduinoPRS = 0; // Hold Strings: Paper, Rock, or Scissors for LCD printing
//randNumber = 0; // Used for creating random numbers
randomSeed(analogRead(1)); // Good random numbers for Arduino selecting PRS

}


void loop() {
//Ready to play statement
   lcd.clear();
   lcd.setCursor(0,0);
   lcd.print("PAPER ROCK SCISSORS!");
   lcd.setCursor(0,1);
   lcd.print("Instructions");
   lcd.setCursor(0,2);
   lcd.print("Press/HOLD GO Button");
   lcd.setCursor(0,3);
   lcd.print("to advance.");
  delay(1000);  


NOPRESS1:
buTTon = analogRead(A0); //Command used to read the Buttons 
//Did you press GO?
//WAIT1
if (buTTon < 900){goto GO1;}
delay(1000);
goto NOPRESS1;


GO1:
   lcd.clear();
   lcd.setCursor(0,0);
   lcd.print("PAPER Covers ROCK");
   lcd.setCursor(0,1);
   lcd.print("ROCK Breaks SCISSORS");
   lcd.setCursor(0,2);
   lcd.print("SCISSORS Cuts PAPER");
   lcd.setCursor(0,3);
   lcd.print("READY Press/HOLD GO!");
  delay(1000);  


NOPRESS2:
buTTon = analogRead(A0); //Command used to read the Buttons 
//Did you press GO?
//WAIT1
if (buTTon < 900){goto MAIN_GAME;}
delay(1000);
goto NOPRESS2;
//GO2:


MAIN_GAME:
//Arduino randomly selects PAPER or ROCK or SCISSORS 
   lcd.clear();
   lcd.setCursor(0,0);
   lcd.print("PAPER ROCK SCISSORS!");
   lcd.setCursor(0,1);
   lcd.print("Arduino Selects");
   lcd.setCursor(0,2);
   lcd.print("[] O 8< [] O 8= [] O");
   lcd.setCursor(0,3);
   lcd.print("8< [] O 8= [] O 8<");
  delay(1000);  
   lcd.setCursor(0,2);
   lcd.print("8< [] O 8= [] O 8<");
   lcd.setCursor(0,3);
   lcd.print("O 8= [] O 8< [] O 8=");
  delay(1000);  
   lcd.setCursor(0,2);
   lcd.print("O 8= [] O 8< [] O 8=");
   lcd.setCursor(0,3);
   lcd.print("[] O 8< [] O 8= [] O");
  delay(1000);  


ArduinoPRS = random(1, 4);
//ArduinoPRS = "PRS";
//ARDUINO picks a number 1 , 2, or 3 and that descision branches to PAPER, ROCK, or SCISSORS; 
if (ArduinoPRS == 1){goto ARDPAPER;}
if (ArduinoPRS == 2){goto ARDROCK;}
if (ArduinoPRS == 3){goto ARDSCISSORS;}
//ArduinoPRS[]={"PAPER", "ROCK", "SCISSORS"}; 


ARDPAPER:
   lcd.clear();
   lcd.setCursor(0,0);
   lcd.print("PAPER ROCK SCISSORS!");
   lcd.setCursor(0,1);
   lcd.print("Arduino Selects");
   lcd.setCursor(0,2);
   lcd.print(ArduinoPRS); // To make Arduino's choice secret comment this line out
//   lcd.print("   OKAY "); // And remove this comment - for Paper, and Rock, and Scissors
   lcd.setCursor(0,3);
   lcd.print("   PAPER ! ! ! "); // To make Arduino's choice secret comment this line out
//   lcd.print("   READY ! ! ! "); // And remove this comment - for Paper, and Rock, and Scissors
  delay(3000);  
//if (ArduinoPRS = "PRS"){goto MAIN_GAME;} //This took care of an early bug but no longer needed
//goto MAIN_GAME; 
goto PLAYERS_TURN;//Now it's the Players_turn


ARDROCK:
   lcd.clear();
   lcd.setCursor(0,0);
   lcd.print("PAPER ROCK SCISSORS!");
   lcd.setCursor(0,1);
   lcd.print("Arduino Selects");
   lcd.setCursor(0,2);
   lcd.print(ArduinoPRS); // To make Arduino's choice secret comment this line out
//   lcd.print("   OKAY "); // And remove this comment - for Paper, and Rock, and Scissors
   lcd.setCursor(0,3);
   lcd.print("   ROCK ! ! ! "); // To make Arduino's choice secret comment this line out
//   lcd.print("   READY ! ! ! "); // And remove this comment - for Paper, and Rock, and Scissors
  delay(3000);  
//if (ArduinoPRS = "PRS"){goto MAIN_GAME;} //This took care of an early bug but no longer needed
//goto MAIN_GAME; 
goto PLAYERS_TURN;//Now it's the Players_turn


ARDSCISSORS:
   lcd.clear();
   lcd.setCursor(0,0);
   lcd.print("PAPER ROCK SCISSORS!");
   lcd.setCursor(0,1);
   lcd.print("Arduino Selects"); // To make Arduino's choice secret comment this line out
   lcd.setCursor(0,2);
   lcd.print(ArduinoPRS);
//   lcd.print("   OKAY "); // And remove this comment - for Paper, and Rock, and Scissors
   lcd.setCursor(0,3);
   lcd.print("   SCISSORS ! ! ! "); // To make Arduino's choice secret comment this line out
//   lcd.print("   READY ! ! ! "); // And remove this comment - for Paper, and Rock, and Scissors
  delay(3000);  
//if (ArduinoPRS = "PRS"){goto MAIN_GAME;} //This took care of an early bug but no longer needed
//goto MAIN_GAME; 
goto PLAYERS_TURN;//Now it's the Players_turn


PLAYERS_TURN:
   lcd.clear();
   lcd.setCursor(0,0);
   lcd.print("Please Select either");
   lcd.setCursor(0,1);
   lcd.print("PAPER ROCK SCISSORS!");
   lcd.setCursor(0,2);
   lcd.print("Press/HOLD GO when");
   lcd.setCursor(0,3);
   lcd.print("Ready to shoot.");
  delay(1000);
PlayerPRS = 0;


NOPRESS3:
buTTon = analogRead(A0); //Command used to read the Buttons 
//Did you press a button?
//WAIT1
if (buTTon < 900){goto GO3;}
//delay(1000);
goto NOPRESS3;


GO3:
   lcd.clear();
   lcd.setCursor(0,0);
   lcd.print("PAPER ROCK SCISSORS!");
   lcd.setCursor(0,1);
   lcd.print("Player Selecting ...");
   lcd.setCursor(0,2);
   lcd.print(". . . . . . . . . . ");
   lcd.setCursor(0,3);
   lcd.print(" . . . . . . . . . .");
delay(1000);  
   lcd.clear();
   lcd.setCursor(0,0);
   lcd.print("PAPER ROCK SCISSORS!");
   lcd.setCursor(0,1);
   lcd.print("Player Selecting ...");
   lcd.setCursor(0,2);
   lcd.print(" . . . . . . . . . .");
   lcd.setCursor(0,3);
   lcd.print(". . . . . . . . . . ");
delay(1000);  


NOPRESS4:
buTTon = analogRead(A0); //Command used to read the Buttons 
//What did you press? Did you press GO?
//WAIT1
//delay(1000);
if (buTTon > 0 && buTTon < 300){goto PLAYPAPER;}
if (buTTon > 301 && buTTon < 450){goto PLAYROCK;}
if (buTTon > 601 && buTTon < 800){goto PLAYROCK;}
if (buTTon > 451 && buTTon < 600){goto PLAYSCISSORS;}
if (buTTon > 801 && buTTon < 900){goto GO4;} //This is the GO-Shoot button
if (buTTon > 901){goto GO3;} //This goes back to first selecting if NOPRESS above, scroll up
if (PlayerPRS = 0){goto GO3;}
if (PlayerPRS = 1){goto PLAYPAPER;}
if (PlayerPRS = 2){goto PLAYROCK;}
if (PlayerPRS = 3){goto PLAYSCISSORS;}
// These last four lines used after plyer select PAPER ROCK SCISSORS but has pressed GO/SHOOT yet. Holds the descision or lets you change your descision. 

PLAYPAPER:
PlayerPRS = 1;
   lcd.clear();
   lcd.setCursor(0,0);
   lcd.print("PAPER ROCK SCISSORS!");
   lcd.setCursor(0,1);
   lcd.print("Player Selecting ...");
   lcd.setCursor(0,2);
   lcd.print("   PAPER ! ! !");
   lcd.setCursor(0,3);
   lcd.print("Press GO or reselect");
delay(1000);  
goto NOPRESS4;


PLAYROCK:
PlayerPRS = 2;
   lcd.clear();
   lcd.setCursor(0,0);
   lcd.print("PAPER ROCK SCISSORS!");
   lcd.setCursor(0,1);
   lcd.print("Player Selecting ...");
   lcd.setCursor(0,2);
   lcd.print("   ROCK ! ! !");
   lcd.setCursor(0,3);
   lcd.print("Press GO or reselect");
delay(1000);  
goto NOPRESS4;


PLAYSCISSORS:
PlayerPRS = 3;
   lcd.clear();
   lcd.setCursor(0,0);
   lcd.print("PAPER ROCK SCISSORS!");
   lcd.setCursor(0,1);
   lcd.print("Player Selecting ...");
   lcd.setCursor(0,2);
   lcd.print("   SCISSORS ! ! !");
   lcd.setCursor(0,3);
   lcd.print("Press GO or reselect");
delay(1000);  
goto NOPRESS4;


GO4:
   lcd.clear();
   lcd.setCursor(0,0);
if (PlayerPRS == 1){lcd.print("Player Chose Paper");}
if (PlayerPRS == 2){lcd.print("Player Chose ROCK");}
if (PlayerPRS == 3){lcd.print("Player Chose SCISSORS");}
   lcd.setCursor(0,1);
if (ArduinoPRS == 1){lcd.print("Arduino Chose Paper");}
if (ArduinoPRS == 2){lcd.print("Arduino Chose ROCK");}
if (ArduinoPRS == 3){lcd.print("Arduino Chose SCISSORS");}
   lcd.setCursor(0,2);
   lcd.print("Player Score = ")+lcd.print(PlayerScore);
   lcd.setCursor(0,3);
   lcd.print("Arduino Score = ")+lcd.print(ArduinoScore);
  delay(5000);


STRANGE_MATH:
if (PlayerPRS == ArduinoPRS) goto TIE; //PlayerPRS == ArduinoPRS == "IT'S A TIE!"
if (PlayerPRS == 1 && ArduinoPRS == 2){goto PLAYER_WINS;} //PlayerPRS == "PAPER" && ArduinoPRS == "ROCK"
if (PlayerPRS == 2 && ArduinoPRS == 3){goto PLAYER_WINS;} //PlayerPRS == "ROCK" && ArduinoPRS == "SCISSORS"
if (PlayerPRS == 3 && ArduinoPRS == 1){goto PLAYER_WINS;} //PlayerPRS == "SCISSORS" && ArduinoPRS == "PAPER"
if (PlayerPRS == 1 && ArduinoPRS == 3){goto ARDUINO_WINS;} //PlayerPRS == "PAPER" && ArduinoPRS == "SCISSORS"
if (PlayerPRS == 2 && ArduinoPRS == 1){goto ARDUINO_WINS;} //PlayerPRS == "ROCK" && ArduinoPRS == "PAPER"
if (PlayerPRS == 3 && ArduinoPRS == 2){goto ARDUINO_WINS;} //PlayerPRS == "SCISSORS" && ArduinoPRS == "ROCK"


//This should be no man's land and never print - Player hits GO but didn't select anything
   lcd.clear();
   lcd.setCursor(0,0);
   lcd.print("OH NO ! ! !");
   lcd.setCursor(0,1);
   lcd.print("Some thing went");
   lcd.setCursor(0,2);
   lcd.print("Horribly wrong");
   lcd.setCursor(0,3);
   lcd.print("This doesn't work");
  delay(3000);  
goto PLAYERS_TURN; //Redo Players_turn


TIE:
//PRINT ITS A TIE ON LCD
//NO SCORE
   lcd.clear();
   lcd.setCursor(0,0);
   lcd.print("IT IS A TIE ! ! !");
   lcd.setCursor(0,1);
   lcd.print("Player Score = ")+lcd.print(PlayerScore);
   lcd.setCursor(0,2);
   lcd.print("Arduino Score = ")+lcd.print(ArduinoScore);
   lcd.setCursor(0,3);
   lcd.print("Please Play Again");
  delay(3000);  
goto FINAL_DESCISION;


PLAYER_WINS:
//PRINT PLAYER WINS
++PlayerScore;
//PLAYER SCORE INCREASES
   lcd.clear();
   lcd.setCursor(0,0);
   lcd.print("YOU WON ");
   lcd.setCursor(0,1);
   lcd.print("Player Score = ")+lcd.print(PlayerScore);
   lcd.setCursor(0,2);
   lcd.print("Arduino Score = ")+lcd.print(ArduinoScore);
   lcd.setCursor(0,3);
   lcd.print("Please Play Again");
  delay(3000);  
goto FINAL_DESCISION;


ARDUINO_WINS:
//PRINT ARDUINO WINS
++ArduinoScore;
//ARDUINO SCORE INCREASES
   lcd.clear();
   lcd.setCursor(0,0);
   lcd.print("ARDUINO WON ");
   lcd.setCursor(0,1);
   lcd.print("Sorry, try again");
   lcd.setCursor(0,2);
   lcd.print("Player Score = ")+lcd.print(PlayerScore);
   lcd.setCursor(0,3);
   lcd.print("Arduino Score = ")+lcd.print(ArduinoScore);
  delay(3000);  
goto FINAL_DESCISION;


FINAL_DESCISION:
//Go again? YES -  Return to MAIN_GAME. NO - end but Ard don't end - so zombie mode: clear display and variables and count very high
   lcd.clear();
   lcd.setCursor(0,0);
   lcd.print("That sure was fun");
   lcd.setCursor(0,1);
   lcd.print("Play again? Press Go");
   lcd.setCursor(0,2);
   lcd.print("Player Score = ")+lcd.print(PlayerScore);
   lcd.setCursor(0,3);
   lcd.print("Arduino Score = ")+lcd.print(ArduinoScore);
  delay(1000);  


NOPRESS6:
buTTon = analogRead(A0); //Command used to read the Buttons 
//Go again?
//If YES
//Did you press GO?
//WAIT
if (buTTon < 900){goto MAIN_GAME;}
delay(1000);
goto NOPRESS6; //IF NO ZOMBIE MODE goto NOPRESS6 repeatedly

}


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