package maze;

import java.io.IOException;
import java.util.Arrays;
import java.util.Map;
import java.util.stream.Stream;

public class Main {
    record XY(int x, int y) {
    }

    public static void main(String[] args) throws IOException {

        final Integer[][] mazedata = {
                {1, 1, 1, 1, 1, 1, 1},
                {1, 0, 0, 0, 0, 0, 1},
                {1, 0, 0, 0, 0, 0, 1},
                {1, 0, 0, 0, 0, 0, 1},
                {1, 0, 0, 0, 0, 0, 1},
                {1, 0, 0, 0, 0, 0, 1},
                {1, 1, 1, 1, 1, 1, 1}
        };
        var player = new XY(1, 1);

        // （起動時のみ）描画
        drawing(mazedata, player);

        boolean isGoaled = false;
        while (!isGoaled) {
            // 入力
            XY nextPosition = input(player);
            // 衝突?
            player = collision(mazedata, player, nextPosition);
            // 描画
            drawing(mazedata, player);
            // GOAL?
            isGoaled = isGoal(player);
        }

        System.out.println("GOAL!!");
    }


    private static void drawing(Integer[][] mazedata, XY player) {
        // merge player data
        var viewdata = arrayDeepCopy(mazedata);
        viewdata[player.y][player.x] = 2;
        // drawing
        Stream.of(viewdata).forEach(Main::drawingLine);
    }

    private static Integer[][] arrayDeepCopy(Integer[][] multipleArrays) {
        Integer[][] newarray = new Integer[multipleArrays.length][];
        for (var i = 0; i < multipleArrays.length; i++) {
            newarray[i] = Arrays.copyOf(multipleArrays[i], multipleArrays.length);
        }
        return newarray;
    }

    private static void drawingLine(Integer[] line) {
        var sprite = Map.of(0, "　", 1, "🌫", 2, "🐶");
        Stream.of(line).forEach(x -> System.out.print(sprite.get(x)));
        System.out.println();
    }

    private static XY input(XY player) throws IOException {
        var in = System.in.read();
        return switch (in) {
            case 'j' -> new XY(player.x, player.y + 1);
            case 'k' -> new XY(player.x, player.y - 1);
            case 'h' -> new XY(player.x - 1, player.y);
            case 'l' -> new XY(player.x + 1, player.y);
            default -> new XY(player.x, player.y);
        };
    }

    private static XY collision(Integer[][] mazedata, XY player, XY nextPosition) {
        if (mazedata[nextPosition.y][nextPosition.x] == 1) {
            return player;
        } else {
            return nextPosition;
        }

    }

    private static boolean isGoal(XY player) {
        var goal = new XY(5, 5);
        return player.x == goal.x && player.y == goal.y;
    }
}

package beprofessional;

public class Hello {
    public static void main(String[] args) {
        var s = """
                複数行の作文です。
                # この行はコメントだから表示しないということにしてみます。
                いい感じに分割してStreamにしてくれるそうなので
                どんなふうになるのか試してみます。
                """;
        s.lines().filter(x -> !x.startsWith("#")).forEach(System.out::println);
    }
}

複数行の作文です。
いい感じに分割してStreamにしてくれるそうなので
どんなふうになるのか試してみます。