如何检查“正方形”的边框是否只涂有红色或蓝色？

Question

我的游戏有问题。问题是我想反驳一个正方形的边框是否只填充了红色或蓝色。 （玩家 1 和玩家 2）我必须以某种方式计算这些填充的方块。 `包控制器;我试图用 ChatGPT 解决它，但它似乎对 AI 来说很难，所以我来到了这个网站。请有人帮助我。

import javafx.fxml.FXML;
import javafx.scene.input.MouseButton;
import javafx.scene.layout.GridPane;
import javafx.scene.layout.StackPane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Line;

public class GameController {

    @FXML
    private GridPane gridPane;
    private boolean playerONE = true;
    int i = 0;
    int j = 0;

    /**
     * Initializes a 4x4 grid with for cycle
     */
    public void initialize() {
        gridPane.setGridLinesVisible(false);
        gridPane.setPrefSize(200, 200);

        for (i = 0; i < 4; i++) {
            for (j = 0; j < 4; j++) {
                createVerticalLine();
                createHorizontalLine();
            }
        }

        for (i = 0; i < 4; i++) {
            j = 4;
            createHorizontalLine();
        }

        for (j = 0; j < 4; j++) {
            i = 4;
            createVerticalLine();
        }
    }

    /**
     * Creates a vertical line on the GridPane, it also paints it to red or blue if it is black.
     */
    private void createVerticalLine()
    {
        Line line = new Line(0, 0, 0, 100);
        line.setStrokeWidth(3);
        StackPane stackPane = new StackPane(line);
        stackPane.setOnMouseClicked(event -> {
            if (event.getButton() == MouseButton.PRIMARY && playerONE && line.getStroke() == Color.BLACK) {
                line.setStroke(Color.RED);
                playerONE = false;
            } else if (event.getButton() == MouseButton.PRIMARY && !playerONE && line.getStroke() == Color.BLACK) {
                line.setStroke(Color.BLUE);
                playerONE = true;
            }
        });
        gridPane.add(stackPane, i * 2, j * 2 + 1);
    }

    /**
     * Creates a horizontal line on the GridPane, it also paints it to red or blue if it is black.
     */
    private void createHorizontalLine(){
        Line line = new Line(0, 0, 100, 0);
        line.setStrokeWidth(3);
        StackPane stackPane = new StackPane(line);
        stackPane.setOnMouseClicked(event -> {
            if (event.getButton() == MouseButton.PRIMARY && playerONE && line.getStroke() == Color.BLACK) {
                line.setStroke(Color.RED);
                playerONE = false;
            } else if (event.getButton() == MouseButton.PRIMARY && !playerONE && line.getStroke() == Color.BLACK) {
                line.setStroke(Color.BLUE);
                playerONE = true;
            }
        });
        gridPane.add(stackPane, i * 2 + 1, j * 2);
    }
}