import java.util.*;

public class RussianRoulette{
   public static void main (String[]args){
      Scanner console = new Scanner(System.in);
      introduction(console);
      ArrayList players=players(console);
      ArrayList winner=game(players,console);
      Winner(winner);
   }

   /* Introduction to the game*/
   public static void introduction(Scanner console){
      System.out.println("This is a game of russian roulette where 2 or more people test there luck against each other.");
      System.out.println("A revolver is loaded with a single bullet and the chamber is spun.");
      System.out.println("Each player takes turns of putting the gun to their head and pulling the trigger.");
      System.out.println("If a player survives, he can choose to pass the gun or press the trigger one more time.");
      System.out.println("If a player is not so lucky, the gun is reloaded and continues with the remaining players.");
      System.out.println("The winner is the last player left alive.");
      System.out.println("Type anything to continue");
      String Continue=console.next();
      System.out.println();
   }

   /*Creates an arraylist for the players*/
   public static ArrayList players(Scanner console){
      ArrayList<Integer> list = new ArrayList<Integer>();
      System.out.println("How many players will be playing today? 2-4 people only ");
      int players=console.nextInt();
      if(players<=1||players>4)throw new IllegalArgumentException("Please type a valid number");
      for(int i=1;i<=players;i++){
         list.add(i);
      }
      return list;
   }
   /*Starts the game where each player takes a turn pulling the trigger. Those
      who are eliminated are removed from the arraylist and cease to play*/
   public static ArrayList game(ArrayList players,Scanner console){
      String Continue="";
      int trigger=1;
      int wheel=spinWheel();
      while(players.size()!=1){
         for (int i=0;i<players.size();i++){
            System.out.println("Player "+players.get(i)+" picks up the gun and aims at his head.");
            System.out.println("He pulls the trigger\n");
            if(trigger==wheel){
               System.out.println("Player "+players.get(i)+" shot himself! He has been eliminated.\n");
               players.remove(i);
               System.out.println("The guns is reloaded and the wheel is spun.\n");
               wheel=spinWheel();
               trigger=0;
               i--;
               System.out.println("Type anything to continue");
               Continue=console.next();
               if(players.size()==1){
                  return players;
               }
            }else{
               trigger++;
               System.out.println("Player "+players.get(i)+" survives, will he test his luck again?\n");
               System.out.println("(1) Press the trigger (2) Pass the gun");
               int again=console.nextInt();
               if(again==1){
                  System.out.println("Player "+players.get(i)+" pulls the trigger again.");
                     if(trigger==wheel){
                        System.out.println("Player "+players.get(i)+" shot himself! He has been eliminated.\n");
                        players.remove(i);
                        trigger=0;
                        System.out.println("The guns is reloaded and the wheel is spun.\n");
                        wheel=spinWheel();
                        i--;
                        System.out.println("Type anything to continue");
                        Continue=console.next();
                        if(players.size()==1){
                           return players;
                        }
                     }else{
                        trigger++;
                        System.out.println("Player "+players.get(i)+" survives! He must pass the gun.\n");
                        System.out.println("Type anything to continue");
                        Continue=console.next();
                     }
               }else{
                  System.out.println("Player "+players.get(i)+" puts down the gun.\n");
               }
            }
         }
      }
   return players;
   }
   /*Spins the wheel, randomizing the chances of a player getting shot*/
   public static int spinWheel(){
      Random rand = new Random();
      int bullet=rand.nextInt(6)+1;
      return bullet;
   }
   /*Prints the winner when the arraylist Players reach .size()==1*/
   public static void Winner(ArrayList winner){
      System.out.println("The winnner is: Player "+winner);
   }
}