AbstractMapView.java

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/*
 * Gridarta MMORPG map editor for Crossfire, Daimonin and similar games.
 * Copyright (C) 2000-2023 The Gridarta Developers.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
package net.sf.gridarta.gui.map.mapview;
 
import java.awt.Dimension;
import java.awt.Point;
import java.awt.Rectangle;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Set;
import javax.swing.JScrollPane;
import net.sf.gridarta.model.archetype.Archetype;
import net.sf.gridarta.model.gameobject.GameObject;
import net.sf.gridarta.model.maparchobject.MapArchObject;
import net.sf.gridarta.model.mapcursor.MapCursor;
import net.sf.gridarta.model.mapgrid.MapGrid;
import net.sf.gridarta.model.mapmodel.MapFile;
import net.sf.gridarta.model.mapmodel.MapModel;
import net.sf.gridarta.model.mapmodel.MapModelListener;
import net.sf.gridarta.model.mapmodel.MapSquare;
import net.sf.gridarta.model.validation.ErrorCollector;
import net.sf.gridarta.utils.RandomUtils;
import net.sf.gridarta.utils.Size2D;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
 
public abstract class AbstractMapView<G extends GameObject<G, A, R>, A extends MapArchObject<A>, R extends Archetype<G, A, R>> implements MapView<G, A, R> {
 
    @NotNull
    private final MapModel<G, A, R> mapModel;
 
    @NotNull
    private final MapGrid mapGrid;
 
    @NotNull
    private final MapCursor<G, A, R> mapCursor;
 
    @NotNull
    private final MapModelListener<G, A, R> mapModelListener = new MapModelListener<G, A, R>() {
 
        @Override
        public void mapSizeChanged(@NotNull final Size2D newSize) {
            mapGrid.resize(newSize);
        }
 
        @Override
        public void mapSquaresChanged(@NotNull final Set<MapSquare<G, A, R>> mapSquares) {
            // ignore
        }
 
        @Override
        public void mapObjectsChanged(@NotNull final Set<G> gameObjects, @NotNull final Set<G> transientGameObjects) {
            // ignore
        }
 
        @Override
        public void errorsChanged(@NotNull final ErrorCollector<G, A, R> errors) {
            // ignore
        }
 
        @Override
        public void mapFileChanged(@Nullable final MapFile oldMapFile) {
            // ignore
        }
 
        @Override
        public void modifiedChanged() {
            setCursorLocation(mapCursor.getLocation());
        }
 
    };
 
    protected AbstractMapView(@NotNull final MapModel<G, A, R> mapModel, @NotNull final MapGrid mapGrid, @NotNull final MapCursor<G, A, R> mapCursor) {
        this.mapModel = mapModel;
        this.mapGrid = mapGrid;
        this.mapCursor = mapCursor;
 
        mapModel.prependMapModelListener(mapModelListener);
    }
 
    @Override
    public void closeNotify() {
        mapModel.removeMapModelListener(mapModelListener);
    }
 
    @NotNull
    @Override
    public List<MapSquare<G, A, R>> getSelectedSquares() {
        final Point[] selectedMapSquares = mapGrid.getSelection();
        final List<MapSquare<G, A, R>> selection = new ArrayList<>();
        for (final Point pos : selectedMapSquares) {
            selection.add(mapModel.getMapSquare(pos));
        }
        return selection;
    }
 
    @NotNull
    @Override
    public List<G> getSelectedGameObjects() {
        final Collection<MapSquare<G, A, R>> selectedMapSquares = getSelectedSquares();
        final List<G> objects = new ArrayList<>();
        for (final Iterable<G> mapSquare : selectedMapSquares) {
            for (final GameObject<G, A, R> gameObject : mapSquare) {
                objects.add(gameObject.getHead());
            }
        }
 
        return objects.isEmpty() ? mapModel.getAllGameObjects() : objects;
    }
 
    @Nullable
    @Override
    public G getSelectedGameObject() {
        final List<G> objects = getSelectedGameObjects();
        final int objectSize = objects.size();
        return objectSize == 0 ? null : objects.get(objectSize == 1 ? 0 : RandomUtils.RND.nextInt(objects.size()));
    }
 
    @NotNull
    @Override
    public MapGrid getMapGrid() {
        return mapGrid;
    }
 
    @NotNull
    @Override
    public MapCursor<G, A, R> getMapCursor() {
        return mapCursor;
    }
 
    @Override
    public void setCursorLocation(@NotNull final Point point) {
        final Size2D mapSize = getMapControl().getMapModel().getMapArchObject().getMapSize();
        if (point.x >= mapSize.getWidth()) {
            point.x = mapSize.getWidth() - 1;
        } else if (point.x < 0) {
            point.x = 0;
        }
        if (point.y >= mapSize.getHeight()) {
            point.y = mapSize.getHeight() - 1;
        } else if (point.y < 0) {
            point.y = 0;
        }
        mapCursor.setLocation(point);
    }
 
    @Override
    public void centerMapView(@NotNull final Point centerSquare) {
        final Rectangle squareBounds = getRenderer().getSquareBounds(centerSquare);
        final JScrollPane scrollPane = getScrollPane();
        final Dimension extentSize = scrollPane.getViewport().getExtentSize();
        final Point centerPoint = new Point(Math.max(0, squareBounds.x + squareBounds.width / 2 - extentSize.width / 2), Math.max(0, squareBounds.y + squareBounds.height / 2 - extentSize.height / 2));
        scrollPane.getViewport().setViewPosition(centerPoint);
    }
 
}