182 lines
5.2 KiB
Java
182 lines
5.2 KiB
Java
package dev.kske.minesweeper;
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import java.awt.Color;
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import java.awt.Font;
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import java.awt.FontMetrics;
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import java.awt.Graphics;
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import java.awt.Image;
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import java.awt.Point;
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import java.awt.Rectangle;
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import java.util.HashMap;
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import java.util.Map;
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import java.util.Random;
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import javax.swing.JPanel;
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/**
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* Project: <strong>Minesweeper</strong><br>
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* File: <strong>Board.java</strong><br>
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* Created: <strong>22.03.2019</strong><br>
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* Author: <strong>Kai S. K. Engelbart</strong>
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*/
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public class Board extends JPanel {
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private static final long serialVersionUID = -279269871397851420L;
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private static final int tileSize = 32;
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private static Map<String, Image> icons;
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private int width, height;
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private Rectangle screen;
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private GameState gameState;
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private int mines, activeTiles, flaggedTiles;
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private Tile[][] board;
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static {
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icons = new HashMap<>();
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final String[] names = { "mine2", "mine4", "tile", "tile3", "flag" };
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for (String name : names) {
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icons.put(name, TextureLoader.loadScaledImage(name, tileSize));
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}
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}
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public Board(int x, int y, int width, int height, int mines) {
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// Not using a layout manager
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super(null);
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this.width = width;
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this.height = height;
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screen = new Rectangle(x, y, x + width * tileSize, y + height * tileSize);
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gameState = GameState.ACTIVE;
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this.mines = mines;
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activeTiles = width * height;
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flaggedTiles = 0;
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board = new Tile[width][height];
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for (int i = 0; i < width; i++)
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for (int j = 0; j < height; j++)
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board[i][j] = new Tile();
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}
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@Override
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public void paintComponent(Graphics g) {
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super.paintComponent(g);
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for (int i = 0; i < width; i++)
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for (int j = 0; j < height; j++) {
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Tile tile = board[i][j];
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int x = screen.x + i * tileSize, y = screen.y + j * tileSize;
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// Draw background with grid
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g.setColor(Color.gray);
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g.fillRect(x, y, x + tileSize, y + tileSize);
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g.setColor(Color.black);
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g.drawRect(x, y, x + tileSize, y + tileSize);
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// Draw all mines when the game is won or lost
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switch (gameState) {
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case LOST:
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// Draw tile with normal mine
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g.drawImage(icons.get("mine2"), x, y, this);
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break;
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case WON:
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// Draw tile with diffused mine
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g.drawImage(icons.get("mine4"), x, y, this);
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break;
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default:
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if (tile.isTouched()) {
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// Draw tile with mine
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if (tile.isMine()) g.drawImage(icons.get("mine2"), x, y, this);
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// Draw flagged tile
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else if (tile.isDrawSurroundingMines() && tile.getSurroundingMines() > 0) {
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// Draw number of surrounding mines
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String numStr = String.valueOf(tile.getSurroundingMines());
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FontMetrics fm = g.getFontMetrics();
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int w = fm.stringWidth(numStr), h = fm.getHeight();
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g.setFont(new Font("Helvetica", Font.PLAIN, 12));
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g.drawString(numStr, x + tileSize / 2 - w / 2, y + tileSize / 2 - h / 2);
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}
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}
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// Draw flagged tile
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else if (tile.isFlagged()) g.drawImage(icons.get("flag"), x, y, this);
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// Draw normal tile
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else g.drawImage(icons.get("tile"), x, y, this);
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}
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}
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}
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public Point getTilePos(int x, int y) {
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return new Point((x - screen.x) / tileSize, (y - screen.y) / tileSize);
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}
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public void initMines() {
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int remaining = mines;
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Random random = new Random();
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while (remaining > 0) {
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// Randomly select a tile
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int n = random.nextInt(width);
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int m = random.nextInt(height);
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// Check if the selected tile already is a mine
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if (!board[n][m].isMine()) {
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// Decrement the counter
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remaining--;
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// Place the mine
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board[n][m].setMine(true);
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// Adjust surrounding mine counters
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for (int i = Math.max(0, n - 1); i < Math.min(n + 1, board.length); i++)
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for (int j = Math.max(0, m - 1); j < Math.min(m + 1, board[i].length); j++)
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if (i != n || j != m) board[i][j].setSurroundingMines(board[i][j].getSurroundingMines() + 1);
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}
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}
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}
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public void touchTile(int n, int m) {
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Tile tile = board[n][m];
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if (!tile.isTouched()) {
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tile.setTouched(true);
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activeTiles--;
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tile.setDrawSurroundingMines(true);
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// Adjust the number of flagged tiles if the tile was flagged
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if (tile.isFlagged()) {
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tile.setFlagged(false);
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flaggedTiles--;
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}
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// Test if the game is won or lost
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if (tile.isMine()) gameState = GameState.LOST;
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else if (mines == activeTiles) gameState = GameState.WON;
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// Touch surrounding tiles when there are zero surrounding mines
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else if (tile.getSurroundingMines() == 0)
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for (int i = Math.max(0, n - 1); i < Math.min(n + 1, board.length); i++)
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for (int j = Math.max(0, m - 1); j < Math.min(m + 1, board[i].length); j++)
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touchTile(i, j);
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// Redraw the touched tile
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repaint(n * tileSize, m * tileSize, (n + 1) * tileSize, (n + 1) * tileSize);
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}
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}
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public void flagTile(int n, int m) {
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Tile tile = board[n][m];
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if (!tile.isTouched()) {
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if (tile.isFlagged()) {
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tile.setFlagged(false);
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flaggedTiles--;
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} else {
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tile.setFlagged(true);
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flaggedTiles++;
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}
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repaint(n * tileSize, m * tileSize, (n + 1) * tileSize, (n + 1) * tileSize);
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}
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}
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}
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