can someone explain the logic of private List getNeighbors(GameObject gameObject)

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can someone explain the logic of private List<GameObject> getNeighbors(GameObject gameObject) method what do these 2 lines do for (int y = gameObject.y - 1; y <= gameObject.y + 1; y++) { for (int x = gameObject.x - 1; x <= gameObject.x + 1; x++) {

Now let's count the mines in adjacent cells. To do this, we'll add a field to each cell of the matrix, which will be responsible for the number of mined neighbors. First, we find all the neighbors, and then we count how many of them are mined.

To get the list of neighbors, you now have the getNeighbors() method, which has one GameObject (cell) parameter.

Your task is to, in a separate method, count the number of mined neighbors for each cell in gameField and assign this value to the appropriate field of the cell.

Although your work is not visible (you started program to see what happens, right?), it is very important to future steps.

Requirements:

The GameObject class must have a public int countMineNeighbors field.
The MinesweeperGame class must have a private void countMineNeighbors() method.
The countMineNeighbors() method should, for each non-mined cell in the gameField matrix, count the number of adjacent mined cells and assign this value to the countMineNeighbors field.
The countMineNeighbors() method should use the getNeighbors(GameObject gameObject) method.
In the createGame() method, after all the elements of the gameField matrix are created, the countMineNeighbors() method must be called.

package com.codegym.games.minesweeper; import com.codegym.engine.cell.*; import java.util.ArrayList; import java.util.List; public class MinesweeperGame extends Game{ private GameObject[][] gameField = new GameObject[9][9]; private static final int SIDE=9; private int countMinesOnField; public int minecount=0; public void initialize() { setScreenSize(SIDE,SIDE); createGame(); countMinesOnField=minecount; } private void createGame() { for(int x=0; x<SIDE ;x++) { for(int y=0;y<SIDE;y++) { int n = getRandomNumber(10); if(n==9) { gameField[y][x] = new GameObject(x, y,true); setCellColor(x, y, Color.DARKSEAGREEN) ; minecount++; } else { gameField[y][x] = new GameObject(x, y,false); setCellColor(x, y, Color.DARKSEAGREEN) ; } } } this.countMinesOnField = minecount; } private List<GameObject> getNeighbors(GameObject gameObject) { List<GameObject> result = new ArrayList<>(); for (int y = gameObject.y - 1; y <= gameObject.y + 1; y++) { for (int x = gameObject.x - 1; x <= gameObject.x + 1; x++) { if (y < 0 || y >= SIDE) { continue; } if (x < 0 || x >= SIDE) { continue; } if (gameField[y][x] == gameObject) { continue; } result.add(gameField[y][x]); } } return result; } private void countMineNeighbors() { for (int i = 0; i < SIDE; i++) { for (int j = 0; j < SIDE; j++) { if(!gameField[i][j].isMine) { for(GameObject z:getNeighbors(gameField[i][j])) { if (z.isMine == true) gameField[i][j].countMineNeighbors++; } } } } } }

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Moosya

Level 3 , Englishtown, United States

22 January 2023, 15:50

It seems the method finds adjacent cells. If x,y is your current cell location then the code identifies -1 and +1 on the x axis and then -1 and +1 on the y axis. By stepping through each combination you will find all adjacent cells.