[JavaFx]经典扫雷

package sample; import javafx.event.ActionEvent; import javafx.fxml.FXML; import javafx.fxml.Initializable; import javafx.scene.control.Alert; import javafx.scene.control.Button; import javafx.scene.control.ChoiceBox; import javafx.scene.control.Label; import javafx.scene.input.MouseButton; import javafx.scene.layout.GridPane; import javafx.scene.layout.HBox; import javafx.scene.paint.Color; import javafx.scene.shape.Circle; import javafx.scene.shape.Shape; import javafx.stage.Stage; import java.net.URL; import java.util.Random; import java.util.ResourceBundle; public class Controller implements Initializable { @FXML private ChoiceBox<String> choiceBox; @FXML private GridPane pane; @FXML private Label label; @FXML private HBox hBox; Button[][] btns; //按钮存储 boolean[][] pressed; //对应得是否按下存储 boolean[][] genLei; //对应是否为雷存储 int [][] nums; //按钮上显示的数，如1，说明周围有1个雷 boolean[][] flags; //用户标记存储 int width; int height; int leiNum; //雷数 int flagNum; //标记数 int pressedNum; //已被打开的按钮数 boolean isEnd; @Override public void initialize(URL location, ResourceBundle resources) { choiceBox.setOnAction(e -> { System.out.println("changed"); String value = choiceBox.getValue(); String[] ss = value.split("\\*"); String[] split = ss[1].split("\\|"); height = Integer.parseInt(ss[0]); width = Integer.parseInt(split[0]); leiNum = Integer.parseInt(split[1]); play(); }); choiceBox.getSelectionModel().select(1); } public void play(){ System.out.println("play"); genLei = new boolean[height][width]; pressed = new boolean[height][width]; btns = new Button[height][width]; nums = new int[height][width]; flags = new boolean[height][width]; pane.getChildren().clear(); flagNum = 0; pressedNum = 0; label.setText(String.valueOf(leiNum)); int rest = leiNum; Random r = new Random(System.nanoTime()); while (rest > 0) { int n = r.nextInt(height * width); if(!genLei[n / width][n % width]){ genLei[n / width][n % width] = true; rest--; } } for (int i = 0; i < height; i++) { for (int j = 0; j < width; j++) { Button btn = getBtn(j, i); btns[i][j] = btn; nums[i][j] = countLeisAround(j, i); pane.add(btn, j, i); } } } public int countLeisAround(int x, int y){ int res = 0; for (int i = Math.max(0, y - 1); i <= Math.min(y + 1, height - 1); i++) { for (int j = Math.max(0, x - 1); j <= Math.min(x + 1, width - 1); j++) { if((y != i || x != j) && genLei[i][j]) res++; } } return res; } public Button getBtn(int x, int y){ Button button = new Button(); button.setPrefSize(30, 30); button.setMinSize(30, 30); button.setStyle("-fx-background-color: darkcyan;"); button.setOnMouseClicked(e -> { if(e.getClickCount() == 2 && pressed[y][x]){ int count = 0; for (int i = Math.max(0, y - 1); i <= Math.min(y + 1, height - 1); i++) { for (int j = Math.max(0, x - 1); j <= Math.min(x + 1, width - 1); j++) { if(flags[i][j]) count++; } } if (count != nums[y][x]) return; for (int i = Math.max(0, y - 1); i <= Math.min(y + 1, height - 1); i++) { for (int j = Math.max(0, x - 1); j <= Math.min(x + 1, width - 1); j++) { if (isEnd){ isEnd = false; return; } if(!flags[i][j]) open(j, i); } } return; } if (MouseButton.SECONDARY == e.getButton()) { if(!flags[y][x]) { flagNum++; flags[y][x] = true; Shape shape = new Circle(4, Color.AQUA); button.setGraphic(shape); }else { flagNum--; flags[y][x] = false; button.setGraphic(null); } } else { if(flags[y][x]) { flagNum--; button.setGraphic(null); } open(x, y); } updateRemain(); }); return button; } public void updateRemain(){ label.setText(String.valueOf(leiNum - flagNum)); } public void open(int x, int y){ if (pressed[y][x]) return; pressed[y][x] = true; Button button = btns[y][x]; if (genLei[y][x]) { isEnd = true; button.setText("*"); button.setStyle("-fx-background-color: crimson"); Alert alert = new Alert(Alert.AlertType.INFORMATION); alert.setHeaderText("what`s a pity!\nplease retry ..."); alert.setTitle("Information"); alert.showAndWait(); play(); }else { button.setStyle("-fx-background-color: dimgrey"); pressedNum++; if (pressedNum == height * width - leiNum){ isEnd = true; Alert alert = new Alert(Alert.AlertType.INFORMATION); alert.setHeaderText("you win!"); alert.setTitle("Information"); alert.showAndWait(); play(); return; } int count = nums[y][x]; if (count > 0) button.setText(String.valueOf(count)); else { for (int i = Math.max(0, y - 1); i <= Math.min(y + 1, height - 1); i++) { for (int j = Math.max(0, x - 1); j <= Math.min(x + 1, width - 1); j++) { if(!flags[i][j]) open(j, i); } } } } } public void fullScreen(ActionEvent e){ Stage window = (Stage) pane.getScene().getWindow(); window.setFullScreen(!window.isFullScreen()); } }