PIbd-21_Potapov_N.S._Stormtrooper_Hard/ProjectStormtrooper/PlanesGenericCollection.java

package ProjectStormtrooper;

import java.awt.*;

public class PlanesGenericCollection<T extends DrawingPlane, U extends IMoveableObject> {
    private int _pictureWidth;
    private int _pictureHeight;
    private final int _placeSizeWidth = 160;
    private final int _placeSizeHeight = 120;
    private SetGeneric<T> _collection;

    public PlanesGenericCollection(int picWidth, int picHeight) {
        int horizontalObjectsCount = picWidth / _placeSizeWidth;
        int verticalObjectsCount = picHeight / _placeSizeHeight;
        _pictureWidth = picWidth;
        _pictureHeight = picHeight;
        _collection = new SetGeneric<T>(horizontalObjectsCount * verticalObjectsCount);
    }

    public int Add(T obj) {
        if (obj == null) {
            return -1;
        }
        return _collection.Insert(obj);
    }

    public T Sub(int pos) {
        return _collection.Remove(pos);
    }

    public U GetU(int pos) {
        if (_collection.Get(pos) != null)
            return (U) _collection.Get(pos).GetMoveableObject();
        return null;
    }

    public void ShowPlanes(Graphics g) {
        DrawBackground(g);
        DrawObjects(g);
    }

    private void DrawBackground(Graphics g) {
        Graphics2D g2d = (Graphics2D) g;
        g2d.setColor(Color.BLACK);
        g2d.setStroke(new BasicStroke(3));
        for (int i = 0; i < _pictureWidth / _placeSizeWidth; i++) {
            for (int j = 0; j < _pictureHeight / _placeSizeHeight + 1; ++j) {
                // Линия разметки места
                g.drawLine(i * _placeSizeWidth, j * _placeSizeHeight, i * _placeSizeWidth + _placeSizeWidth / 2, j * _placeSizeHeight);
            }
            g.drawLine(i * _placeSizeWidth, 0, i * _placeSizeWidth, _pictureHeight / _placeSizeHeight * _placeSizeHeight);
        }
    }

    private void DrawObjects(Graphics g) {
        int placesColumnCount = _pictureHeight / _placeSizeHeight;
        int placesRowCount = _pictureWidth / _placeSizeWidth;
        for (int i = 0; i < _collection.Count(); i++) {
            // получение объекта
            var obj = _collection.Get(i);
            // установка позиции
            if (obj == null)
                continue;
            obj.SetPosition(
                    (placesRowCount - 1) * _placeSizeWidth - (i % placesColumnCount * _placeSizeWidth) + (_placeSizeWidth - obj.GetWidth()) / 2,
                    i / placesColumnCount * _placeSizeHeight + (_placeSizeHeight - obj.GetHeight()) / 2
            );
            // прорисовка объекта
            obj.DrawTransport(g);
        }
    }
}