/****************
Thomas Baillie
CSE 231 (section 17)
Project 3 - build date: 9/13/06
*******************/
#include <iostream>
#include <string>				// used to manipulate/create values of type String
#include <ctime>				// utilizes the system clock to seed for a semi-random number

using namespace std;

/* Begin variable declarations*/
string
compChoice(),				// this function reports the user's selection
userChoice();				// this function reports the computer's selection
//getPref();

char choice;					// this char hold's the users input commands.
void playGame();				// initializes the game routine
int compWins = 0;				// the number of computer wins
int userWins = 0;				// the number of user wins
int scissorsCount = 0;			// the number of times the user chooses scissors
int	paperCount = 0;				// the number of times the user chooses paper
int	rockCount = 0;				// the number of times the user chooses rock
int tie = 0;					// the number of ties
int highest = 0;

int main()
{	
	cout << "Are you ready to play Rock, Paper, Scissors? Your choices are: \n\n";
	cout << "   r/R for Rock\n";
	cout << "   p/P for Paper\n";
	cout << "   s/S for Scissors\n";
	cout << "   q/Q to Quit\n\n";

	cout << "Choose your weapon: ";
	cin >> choice;				// show menu and take in initial user input

	while (choice != 'Q' && choice != 'q'){
		switch (choice){		// if the user doesn't quit, the program loops through this switch forever
			case 's':
			case 'S':			// if the user chooses scissors, add 1 to scissorsCount and then start the game
				scissorsCount++;
				playGame();
				cout << "\nChoose your weapon (or q/Q to quit): ";
				cin >> choice;
				break;
			case 'p':
			case 'P':			// if the user chooses paper, add 1 to paperCount and then start the game
				paperCount++;
				playGame();
				cout << "\nChoose your weapon (or q/Q to quit): ";
				cin >> choice;
				break;
			case 'r':
			case 'R':			// if the user chooses rock, add 1 to rockCount and then start the game
				rockCount++;
				playGame();
				cout << "\nChoose your weapon (or q/Q to quit): ";
				cin >> choice;
				break;
			default:			// if the user enters invalid input, force them to enter something valid
				cout << "Invalid input! Please try again.\n\n";
				cout << "Choose your weapon: ";
				cin >> choice;
				break;
		}
	}
	// if the user enters q/Q, the above switch is bypassed and game scores are tallied up
	cout << "\n\nYou've chosen to end the game.  The final results are:\n\n";
	cout << "The computer won " << compWins << " times\n";
	cout << "You won " << userWins << " times\n";
	cout << "We tied " << tie << " times\n";
	cout << "You selected Rock " << rockCount <<" times\n";
	cout << "You selected Paper " << paperCount << " times\n";
	cout << "You selected Scissors " << scissorsCount << " times\n\n";
	cout << "Thanks for playing!\n\n";
	system("pause");
}	// end main()

/*
The playGame() function evaluates the data returned by the userChoice() and compChoice()
functions to determine/output the winner of each round.
*/
void playGame()
{
	string userPref = "null";

	cout << "\n\n[User Choice]: " << userChoice() << "\n";
	cout << "[Computer Choice]: " << compChoice() << "\n";

	if (userChoice() == "paper" && compChoice() == "rock"){
		cout << "You win!\n\n";
		userWins++;
	}
	else if (userChoice() == "scissors" && compChoice() == "paper"){
		cout << "You win!\n\n";
		userWins++;
	}
	else if (userChoice() == "rock" && compChoice() == "scissors"){
		cout << "You win!\n\n";
		userWins++;
	}
	else if (userChoice() == compChoice()){
		cout << "You've tied!\n\n";
		tie++;
	}
	else {
		cout << "You lose!\n\n";
		compWins++;
	}

	// GODDAMNIT, MAINTAIN THE ACTUAL CURRENT PREFERENCE, FUCK!
	if (rockCount > scissorsCount || rockCount > paperCount){
		highest = rockCount;
		userPref = "rock";
	}
	else if (scissorsCount > rockCount || scissorsCount > paperCount){
		highest = scissorsCount;
		userPref = "scissors";
	}
	else if (paperCount > rockCount || paperCount > scissorsCount){
		highest = paperCount;
		userPref = "paper";
	}
	cout << "lol teh usarpreff: " << userPref;

}// end playGame()

/*
The userChoice() function takes in the char value stored in choice
and returns the corresponding string value (rock/paper/scissors, respectively)
*/
string userChoice()
{
	string userChoice;
	switch (choice){
		case 'r':
			userChoice = "rock";
			break;
		case 'p':
			userChoice = "paper";
			break;
		case 's':
			userChoice = "scissors";
			break;
		default:
			userChoice = "null";
			break;
	}
	return userChoice;
}// end userChoice()

/*
compChoice() utilizes the srand() (which seeds the system clock) and rand() functions 
to generate a random number between 0-2 inclusive and 
designates 0,1,2 as rock,paper,scissors, respectively.
*/
string compChoice()
{
	int randVal = 0;
	srand((unsigned)time(0)); 
	randVal = rand()%3;

	if (randVal == 0)
		return "paper";
	else if (randVal == 1)
		return "rock";
	else 
		return "scissors";
}//compChoice()