Arcade64/src/main/java/Minesweeper/Playfield.java

package Minesweeper;

public class Playfield {

	private static final int CELLSIZE = 50;
	private int Size;
	private MinesweeperGame MsG;
	public Cell[][] cells;

	public Playfield(MinesweeperGame _MsG, int _Size, int _bombAmount) {
		MsG = _MsG;
		Size = _Size;

		cells = new Cell[Size][Size];

		int[] bPlacement = new int[_bombAmount];
		for (int i = 0; i < bPlacement.length; i++) {
			bPlacement[i] = (int) (Math.random() * Size * Size);

			for (int j = 0; j < i; j++) {
				if (bPlacement[i] == bPlacement[j]) {
					i--;
					break;
				}
			}
		}

		for (int i = 0; i < Size; i++) {
			for (int j = 0; j < Size; j++) {
				cells[i][j] = new Cell(CellType.Number);

				cells[i][j].setBounds(j * CELLSIZE + (MsG.WIDTH / 2 - Size * CELLSIZE / 2),
						i * CELLSIZE + (MsG.HEIGTH / 2 - Size * CELLSIZE / 2), CELLSIZE, CELLSIZE);
				MsG.add(cells[i][j]);

				for (int k = 0; k < bPlacement.length; k++) {
					if (bPlacement[k] == i * Size + j) {
						cells[i][j].type = CellType.Bomb;
						break;
					}
				}
			}
		}

		for (int i = 0; i < Size; i++) {
			for (int j = 0; j < Size; j++) {
				if (cells[i][j].type == CellType.Number) {
					calculateBombProximity(i, j);
				}
			}
		}
	}

	public void calculateBombProximity(int row, int column) {

		if (row > 0) {
			if (column > 0) {
				if (cells[row - 1][column - 1].type == CellType.Bomb) {
					cells[row][column].value++;
				}
			}

			if (cells[row - 1][column].type == CellType.Bomb) {
				cells[row][column].value++;
			}

			if (column < cells.length - 1) {
				if (cells[row - 1][column + 1].type == CellType.Bomb) {
					cells[row][column].value++;
				}
			}
		}

		if (row < cells.length - 1) {
			if (column > 0) {
				if (cells[row + 1][column - 1].type == CellType.Bomb) {
					cells[row][column].value++;
				}
			}

			if (cells[row + 1][column].type == CellType.Bomb) {
				cells[row][column].value++;
			}

			if (column < cells.length - 1) {
				if (cells[row + 1][column + 1].type == CellType.Bomb) {
					cells[row][column].value++;
				}
			}
		}

		if (column > 0) {
			if (cells[row][column - 1].type == CellType.Bomb) {
				cells[row][column].value++;
			}
		}
		if (column < cells.length - 1) {
			if (cells[row][column + 1].type == CellType.Bomb) {
				cells[row][column].value++;
			}
		}
		
		cells[row][column].update();
	}

}