can any one explain 2nd and 4th requirements

Question about the task

Minesweeper (Part 5/16)

Games, Level 0, Lesson 0

Under discussion

how to assign mines and how to count them

Minesweeper is aptly named. The player has to deal with mines, though maybe it would be best for the player to stay far away from them :)

Let's add these mines to the game. To do this, we'll adapt the GameObject class to account for the fact that a cell can be a mine (by adding the isMine flag).

Don't create a new constructor: editing the existing constructor will suffice.

Additionally, when creating the cells, add code that generates mines with a probability of 10%. The easiest way is to use the Game class's getRandomNumber(int n) method, which returns a random number from 0 to n-1 inclusive. Therefore, the probability of generating a certain number is 1/n.

And don't forget to count the number of generated mines in the MinesweeperGame class.

Once you've done all that, run the program and check that nothing is broken :)

Requirements:

The GameObject class must have a public boolean isMine field.
The GameObject class must have one constructor with (int, int, boolean) parameters that are used to initialize the x, y, and isMine fields, in that order.
There must be a private int countMinesOnField variable in the MinesweeperGame class.
When cells are created in the createGame() method, you should randomly determine whether each cell will have a mine. Use the Game class's getRandomNumber(int) method with the argument 10.
After the createGame() method is executed, the countMinesOnField variable should be assigned the value of the number of mines in the field.

package com.codegym.games.minesweeper; public class GameObject { public int x; public int y; public boolean isMine; GameObject(int x,int y,Boolean isMine){ this.x=x; this.y=y; this.isMine=isMine; } }

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Nithin

Level 35 , Hyderabad, India

12 July 2019, 02:13

#1 : in gameObject class the constructor should have primitive data types. try changing "Boolean" parameter on line 9 to "boolean". #2 : in create game method use getRandomNumber(10) in line 20 to get a random number from 0-9.by using the value you got determine whether a cell has a mine or not.

int n = getRandomNumber(10);
if(n == 1){
gameField[i][j] = new GameObject(j, i,true);        }
 else
 gameField[i][j] = new GameObject(j, i,false);
  setCellColor(j, i, Color.GREEN);

#3 : you don't need to write another nested for loop for setCellColor function . you can use it in the first nested loop

ddi

Level 18 , Dortmund, Germany

12 August 2019, 09:45

Hi there, and where should we put the countMinesField? Thanks for the help!

Artur

Level 22 , Moorends, United Kingdom

12 December 2020, 09:37

you should put countMinesField++ inside if (n == 1) as you want to add 1 mine everytime isMine = true :)