SnakeAndLadder

import java.util.*;

class Player{
    String name;
    int currentPosition;
    Player(String name, int currentPosition){
        this.name = name;
        this.currentPosition = currentPosition;
    }
}

//------------------
class Dice{
    int diceCount;
    int min = 1;
    int max = 6;
    Dice(int diceCount){
        this.diceCount = diceCount;
    }
    public int rollDice(){
        int totalSum = 0;
        int diceUsed = 0;
        while(diceUsed < diceCount){
            int value = (int)Math.random()*(max-min+1) + min;
            totalSum+=value;
            diceUsed++;
        }
        return totalSum;
    }
}
//-----------------------
class Jump{
    int start;
    int end;
}
//------------------------
class Cell{
    Jump jump;
}
//------------------------
class Board{
    Cell[][] cells;
    
    Board(int size, int numberOfSnakes, int numberOfLadder){
        initializeCells(size);
        initializeSnakesAndLadders(numberOfSnakes,numberOfLadder);
    }
    
    private void initializeCells(int size){
        cells = new Cell[size][size];
        for(int i=0;i<size;i++){
            for(int j=0;j<size;j++){
                cells[i][j] = new Cell();
            }
        }
    }
    
    private void initializeSnakesAndLadders(int numberOfSnakes, int numberOfLadder){
        int min = 1;
        int max = cells.length*cells.length-1;
        while(numberOfSnakes>0){
            int start = (int)(Math.random()*(max-min+1)+min);
            int end = (int)(Math.random()*(max-min+1)+min);
            if(start<=end){
                continue;
            }
            
            Jump jump = new Jump();
            jump.start = start;
            jump.end = end;
            
            Cell cell = getCell(start);
            cell.jump = jump;
            numberOfSnakes--;
        }
        while(numberOfLadder>0){
            int start = (int)(Math.random()*(max-min+1)+min);
            int end = (int)(Math.random()*(max-min+1)+min);
            if(start>=end){
                continue;
            }
            
            Jump jump = new Jump();
            jump.start = start;
            jump.end = end;
            
            Cell cell = getCell(start);
            cell.jump = jump;
            numberOfLadder--;
        }
    }
    
    public Cell getCell(int position){
        int row = position / cells.length;
        int col = position % cells.length;
        return cells[row][col];
    }
}
//-----------------------------
class Game{
    Board board;
    Dice dice;
    Deque<Player> players = new LinkedList<>();
    Player winner;
    
    public Game(){
        initialize();
    }
    
    public void initialize(){
        board = new Board(10,5,4);
        System.out.println("Board initialized");
        dice = new Dice(1);
        System.out.println("Dice initialized");
        winner = null;
        addPlayers();
    }
    
    public void addPlayers(){
        Player p1 = new Player("rohan",0);
        Player p2 = new Player("janu",0);
        players.add(p1);
        players.add(p2);
    }
    
    public void startGame(){
        while(winner == null){
            //check whose turn now
            Player currentPlayer = checkTurn();
            System.out.println(currentPlayer.name+" turn ");
            
            //dice rolled
            int diceNumber = dice.rollDice();
            System.out.println(currentPlayer.name+" "+diceNumber);
            
            //new position
            int newPosition = currentPlayer.currentPosition + diceNumber;
            
            //check jump at new position
            newPosition = checkJump(newPosition);
            currentPlayer.currentPosition = newPosition;
            System.out.println(currentPlayer.name+" "+currentPlayer.currentPosition);
            
            if(newPosition >= board.cells.length * board.cells.length-1){ //we get the winner, game stop
                winner = currentPlayer;
            }
        }
        System.out.println("Winner is "+winner.name);
    }
    
    private Player checkTurn(){
        Player player = players.removeFirst();
        players.addLast(player);
        return player;
    }
    
    private int checkJump(int position){
        if(position > board.cells.length * board.cells.length-1){
            return position;
        }
        Cell cell = board.getCell(position);
        if(cell.jump != null && cell.jump.start == position){
            return cell.jump.end;
        }
        return position;
    }
    
}

//----------------------------------------
public class client{
    public static void main(String[] args){
        Game game = new Game();
        game.startGame();
    }
}