BeeBeeBee

package com.company;

import java.util.Scanner;

public class Main {

    static int playerRow = 0;
    static int playerCol = 0;

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        int size = Integer.parseInt(sc.nextLine());

        String[][] matrix = new String[size][size];

        for (int rows = 0; rows < matrix.length; rows++) {
            String[] arr = sc.nextLine().split(""); // split by what ?
        }
        String command = sc.nextLine();

        int pollinatedFlowers = 0;


        boolean gameOver = false;

        while (!"end".equals(command) && !gameOver) {

            int nextField = 0;


            for (int rows = 0; rows < matrix.length; rows++) {
                for (int cols = 0; cols < matrix[rows].length; cols++) {
                    if (matrix[rows][cols].equals("B")) {
                        playerRow = rows;
                        playerCol = cols;
                    }
                }
            }

            switch (command) {
                case "up":

                    nextField = moveUp(matrix, playerRow);

                    if (playerRow == nextField) {
                        matrix[playerRow][playerCol] = ".";
                        gameOver = true;
                        continue;
                    }

                    matrix[playerRow][playerCol] = ".";
                    playerRow = nextField;
                    if (matrix[playerRow][playerCol].equals(".")) {
                        matrix[playerRow][playerCol] = "B";
                    }

                    if (matrix[playerRow][playerCol].equals("f")) {
                        matrix[playerRow][playerCol] = "B";
                        pollinatedFlowers += 1;
                    }

                    if (matrix[playerRow][playerCol].equals("O")) {
                        matrix[playerRow][playerCol] = ".";
                        playerRow -= 1;
                        matrix[playerRow][playerCol] = "B";
                    }

                    break;
                case "down":

                    nextField = moveDown(matrix, playerRow);

                    if (playerRow == nextField) {
                        matrix[playerRow][playerCol] = ".";
                        gameOver = true;
                        continue;
                    }

                    matrix[playerRow][playerCol] = ".";
                    playerRow = nextField;
                    if (matrix[playerRow][playerCol].equals(".")) {
                        matrix[playerRow][playerCol] = "B";
                    }

                    if (matrix[playerRow][playerCol].equals("f")) {
                        matrix[playerRow][playerCol] = "B";
                        pollinatedFlowers += 1;
                    }

                    if (matrix[playerRow][playerCol].equals("O")) {
                        matrix[playerRow][playerCol] = ".";
                        playerRow += 1;
                        matrix[playerRow][playerCol] = "B";
                    }

                    break;
                case "left":

                    nextField = moveLeft(matrix, playerCol);

                    if (playerCol == nextField) {
                        matrix[playerRow][playerCol] = ".";
                        gameOver = true;
                        continue;
                    }

                    matrix[playerRow][playerCol] = ".";
                    playerCol = nextField;
                    if (matrix[playerRow][playerCol].equals(".")) {
                        matrix[playerRow][playerCol] = "B";
                    }

                    if (matrix[playerRow][playerCol].equals("f")) {
                        matrix[playerRow][playerCol] = "B";
                        pollinatedFlowers += 1;
                    }

                    if (matrix[playerRow][playerCol].equals("O")) {
                        matrix[playerRow][playerCol] = ".";
                        playerCol -= 1;
                        matrix[playerRow][playerCol] = "B";
                    }

                    break;
                case "right":

                    nextField = moveRight(matrix, playerCol);

                    if (playerCol == nextField) {
                        matrix[playerRow][playerCol] = ".";
                        gameOver = true;
                        continue;
                    }

                    matrix[playerRow][playerCol] = ".";
                    playerCol = nextField;
                    if (matrix[playerRow][playerCol].equals(".")) {
                        matrix[playerRow][playerCol] = "B";
                    }

                    if (matrix[playerRow][playerCol].equals("f")) {
                        matrix[playerRow][playerCol] = "B";
                        pollinatedFlowers += 1;
                    }

                    if (matrix[playerRow][playerCol].equals("O")) {
                        matrix[playerRow][playerCol] = ".";
                        playerCol += 1;
                        matrix[playerRow][playerCol] = "B";
                    }

                    break;
            }

            command = sc.nextLine();
        }

        if (gameOver) {
            System.out.println(String.format("The bee couldn't pollinate the flowers, she needed %s flowers more"
                    , 5 - pollinatedFlowers));
        }
        if (!gameOver && pollinatedFlowers >= 5) {
            System.out.println(String.format("Great job, the bee manage to pollinate %d flowers!", pollinatedFlowers));
        }

    }

    public static int moveUp(String[][] matrix, int playerRow) {
        if (playerRow > 0) {
            playerRow -= 1;
        }
        return playerRow;
    }

    public static int moveDown(String[][] matrix, int playerRow) {
        if (playerRow < matrix.length - 1) {
            playerRow += 1;
        }
        return playerRow;
    }

    public static int moveLeft(String[][] matrix, int playerCol) {
        if (playerCol > 0) {
            playerCol -= 1;
        }
        return playerCol;
    }

    public static int moveRight(String[][] matrix, int playerCol) {
        if (playerCol < matrix.length - 1) {
            playerCol += 1;
        }
        return playerCol;
    }
}