So here's the code for this. I have a switch statement so that the user can enter their choice between the given options printed out. When I enter 2, 3, or any other number it works fine. But once I select the first option (playing the game) it'll go to that method and work fine. But once the method ends and the case breaks the compiler returns to the top of the while loop and won't let the user choose another option. Instead it'll choose the first option once more and continue on this infinite loop. How can I fix this?
package rockPaperScissors;
import java.util.Random;
import java.util.Scanner;
public class RockPaperScissors {
public static void main(String[] args) {
System.out.println("Welcome to Rock Paper Scissors!");
Scores scores = new Scores(); //Object that holds two integers and allows you to increment them
Scanner playerChoice = new Scanner(System.in);
int option = 0;
do{
System.out.println("Select an option!");
System.out.println("1: Play the game");
System.out.println("2: Check the score");
System.out.println("3: Quit the game");
option = playerChoice.nextInt(); /*Shouldn't this line stop and let me
enter another option for the menu? */
switch(option) {
case 1: playGame(scores);
break;
case 2: getScore(scores);
break;
case 3: System.out.println("Thanks for playing!");
break;
default: System.out.println("You must pick one of given options\n");
break;
}
} while(option != 3);
playerChoice.close();
}
What I find odd is that this piece of code here works exactly as I want it to, but they're essentially the same:
import java.util.Scanner;
public class Menu {
public static void main(String[] args) {
System.out.println("Welcome to a simple menu that does nothing!\n");
Scanner input = new Scanner(System.in);
int menuChoice;
do{
System.out.println("Please select an option!\n");
System.out.println("1: This does nothing");
System.out.println("2: This also does nothing");
System.out.println("3: You guessed it, it does nothing");
System.out.println("4: Quit\n");
menuChoice = input.nextInt();
switch(menuChoice){
case 1: System.out.println("You chose option 1");
break;
case 2: System.out.println("You chose option 2");
break;
case 3: System.out.println("You chose option 3");
break;
case 4: System.out.println("Goodbye!");
break;
default: System.out.println("ENTER A VALID INPUT");
}
}while(menuChoice != 4);
input.close();
}
}
EDIT:
So playGame is a method that actually handles the rock paper scissors part of the game.
private static Scores playGame(Scores scores) {
System.out.println("Pick either rock, paper, or scissors");
//The player makes a choice
Scanner scanner = new Scanner(System.in);
String playerDecision = "";
if(scanner.hasNextLine()){
playerDecision = scanner.nextLine();
}
//Check to see if the player chose one of the given options
if(playerDecision.equalsIgnoreCase("rock") == false && playerDecision.equalsIgnoreCase("paper") == false && playerDecision.equalsIgnoreCase("scissors") == false){
System.out.println("You must select either rock, paper, or scissors");
scanner.close();
return scores;
}
//The computer makes a random choice
Random random = new Random();
String gameArray[] = {"rock", "paper", "scissors"};
int randNum = random.nextInt(3);
String computerChoice = gameArray[randNum];
System.out.println("You chose: " + playerDecision + "\nThe computer choice: " + computerChoice);
if(playerDecision.equalsIgnoreCase(computerChoice)){ //If it's a tie
System.out.println("It's a tie!");
scanner.close();
return scores;
} else if(playerDecision.equalsIgnoreCase("rock")){ //If the player chooses rock
if(computerChoice.equalsIgnoreCase("paper")){ //If the computer chooses paper
System.out.println("The computer wins!");
scores.incrementComputerScore();
scanner.close();
return scores;
} else if(computerChoice.equalsIgnoreCase("scissors")){ //If the computer chooses scissors
System.out.println("You win!");
scores.incrementPlayerScore();
scanner.close();
return scores;
}
} else if(playerDecision.equalsIgnoreCase("paper")){ //If the player chooses paper
if(computerChoice.equalsIgnoreCase("rock")){ //If the computer chooses rock
System.out.println("You win!");
scores.incrementPlayerScore();
scanner.close();
return scores;
}else if(computerChoice.equalsIgnoreCase("scissors")){ //If the computer chooses scissor
System.out.println("The computer wins!");
scores.incrementComputerScore();
scanner.close();
return scores;
}
} else if(playerDecision.equalsIgnoreCase("scissors")){ //If the player chooses scissors
if(computerChoice.equalsIgnoreCase("rock")){ //If the computer chooses rock
System.out.println("The computer wins!");
scores.incrementComputerScore();
scanner.close();
return scores;
}else if(computerChoice.equalsIgnoreCase("paper")){ //If the computer chooses paper
System.out.println("You win!");
scores.incrementPlayerScore();
scanner.close();
return scores;
}
}
scanner.close();
return scores;
}
