public class Feld {
    public static final int sizeX = 16;
    public static final int sizeY = 8;
    private final NoSchiff none = new NoSchiff();
    private final BrokenSchiff broken = new BrokenSchiff();

    public Schiff[][] map = {
            {none, none, none, none, none, none, none, none, none, none, none, none, none, none, none, none},
            {none, none, none, none, none, none, none, none, none, none, none, none, none, none, none, none},
            {none, none, none, none, none, none, none, none, none, none, none, none, none, none, none, none},
            {none, none, none, none, none, none, none, none, none, none, none, none, none, none, none, none},
            {none, none, none, none, none, none, none, none, none, none, none, none, none, none, none, none},
            {none, none, none, none, none, none, none, none, none, none, none, none, none, none, none, none},
            {none, none, none, none, none, none, none, none, none, none, none, none, none, none, none, none},
            {none, none, none, none, none, none, none, none, none, none, none, none, none, none, none, none},
    };

    public Feld() {
    }

    public void printMap() {
        StringBuilder output = new StringBuilder("\033[2J  ");
        int index = 0;
        for (int i=0; i < sizeX; i++) {
            output.append(String.format("%x ", i));
        }
        output.append('\n');
        for (Schiff[] row : this.map) {
            output.append(String.format("%x ", index));
            for (Schiff ship : row) {
                // this seems to be the repr of the Schiff class, not the object actually?
                output.append(String.format("%s ", ship.repr()));
            }
            output.append('\n');
            index++;
        }
        System.out.println(output);
    }

    public boolean insertShip(Schiff ship, int y, int x) {
        System.out.println(String.format(
                "Inserting ship into map: %s",
                ship
        ));
        if (x >= sizeX || y >= sizeY || y < 0 || x < 0) {
            System.err.println(
                    String.format("Tried to insert a ship at invalid coordinates:\n"+
                    "x: %s\n"+
                    "y: %s\n", x, y)
            );
            return false;
        }

        this.map[y][x] = ship;
        assert this.map[y][x] == ship;
        return true;
    }

    public boolean hit(int y, int x) {
        if (x >= sizeX || y >= sizeY || y < 0 || x < 0) {
            System.err.println("Tried to hit a ship at invalid coordinates.");
            return false;
        }

        if (map[y][x] instanceof RealSchiff) {
            if (map[y][x].laenge > 0) {
                map[y][x].laenge -= 1;
                map[y][x] = broken;
                System.out.println("Hit!");
            }
            else {
                map[y][x].laenge = 0;
                map[y][x] = broken;
                System.out.println("Ship destroyed!");
            }
            return true;
        }
        else {
            // no hit
            return false;
        }
    }
}