mirror of https://github.com/FreeCol/freecol.git
285 lines
7.3 KiB
Java
285 lines
7.3 KiB
Java
/**
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* Copyright (C) 2002-2022 The FreeCol Team
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*
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* This file is part of FreeCol.
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*
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* FreeCol is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* FreeCol is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with FreeCol. If not, see <http://www.gnu.org/licenses/>.
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*/
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package net.sf.freecol.common.model;
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import java.awt.Color;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.List;
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import javax.xml.stream.XMLStreamException;
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import net.sf.freecol.common.i18n.Messages;
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import net.sf.freecol.common.io.FreeColXMLReader;
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import net.sf.freecol.common.io.FreeColXMLWriter;
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/**
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* An area of the map. Areas can be used to define starting locations and other
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* behavior where a list of tiles is needed.
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*
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* Note that areas can overlap.
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*
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* @see Region
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*/
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public class Area extends FreeColGameObject {
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public static final String TAG = "area";
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public static final String PREFIX_PLAYER_STARTING_POSITION = "model.area.starting.";
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private String nameKey = null;
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private String name = null;
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private List<Tile> tiles = new ArrayList<>();
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/**
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* Creates a new {@code Region} instance.
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*
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* @param game The enclosing {@code Game}.
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*/
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public Area(Game game) {
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super(game);
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}
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/**
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* Creates a new {@code Region} instance.
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*
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* @param game The enclosing {@code Game}.
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* @param id The object identifier.
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*/
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public Area(Game game, String id) {
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super(game, id);
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}
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/**
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* Creates a new {@code Region} instance.
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*
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* @param game The enclosing {@code Game}.
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* @param id The object identifier.
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* @param nameKey A key for getting a translatable name of this area.
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*/
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public Area(Game game, String id, String nameKey) {
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super(game, id);
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this.nameKey = nameKey;
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}
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public Area(Game game, Area copyFrom) {
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super(game, copyFrom.getId());
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this.name = copyFrom.name;
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this.nameKey = copyFrom.nameKey;
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for (Tile copyFromTile : copyFrom.tiles) {
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tiles.add(game.getMap().getTile(copyFromTile.getX(), copyFromTile.getY()));
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}
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}
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/**
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* Gets a list of tiles within this {@code Area}.
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*/
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public List<Tile> getTiles() {
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return Collections.unmodifiableList(tiles);
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}
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/**
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* Adds a new tile to the area.
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* @param tile The tile to be added.
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*/
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public void addTile(Tile tile) {
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tiles.add(tile);
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}
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/**
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* Checks if this area contains the given tile.
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* @param tile The tile to checked,
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*/
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public boolean containsTile(Tile tile) {
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return tiles.contains(tile);
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}
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/**
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* Removes a tile from the area.
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* @param tile The tile to be removed.
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*/
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public void removeTile(Tile tile) {
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tiles.remove(tile);
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}
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/**
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* Gets the name of this area.
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*/
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public String getName() {
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return name;
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}
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/**
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* Sets the name of this area.
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* @param name The name.
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*/
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public void setName(String name) {
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if (nameKey != null) {
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throw new IllegalArgumentException("Cannot change the name of areas with a fixed nameKey.");
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}
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this.name = name;
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}
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/**
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* Gets a i18n key for naming this area.
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* @return The key to be used with {@link Messages#message(String)}.
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*/
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public String getNameKey() {
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return nameKey;
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}
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/**
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* Checks if this area has no tiles.
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* @return {@code true} if there are no tiles attached to this area.
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*/
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public boolean isEmpty() {
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return tiles.isEmpty();
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}
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/**
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* Returns the color to be used for displaying the area in the map editor.
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* @return The color that can be used by the map editor.
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*/
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public Color getColor() {
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if (getId().startsWith(PREFIX_PLAYER_STARTING_POSITION)) {
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final String nationId = getId().substring(PREFIX_PLAYER_STARTING_POSITION.length());
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final Nation nation = getGame().getSpecification().getAlreadyInitializedType(nationId, Nation.class);
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if (nation != null) {
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return nation.getColor();
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}
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}
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final int hashCode = getId().hashCode();
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final int r = hashCode % 256;
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final int g = (hashCode / 256) % 256;
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final int b = (hashCode / (256 * 256)) % 256;
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return new Color(r, g, b);
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public <T extends FreeColObject> boolean copyIn(T other) {
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Area o = copyInCast(other, Area.class);
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if (o == null || !super.copyIn(o)) return false;
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final Game game = getGame();
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this.tiles = game.updateRef(tiles);
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return true;
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}
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// Serialization
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private static final String TILE_REFERENCE_TAG = "tileReference";
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private static final String NAME_KEY_TAG = "nameKey";
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private static final String NAME_TAG = "name";
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/**
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* {@inheritDoc}
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*/
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@Override
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protected void writeAttributes(FreeColXMLWriter xw) throws XMLStreamException {
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super.writeAttributes(xw);
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if (nameKey != null) {
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xw.writeAttribute(NAME_KEY_TAG, nameKey);
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}
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if (name != null) {
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xw.writeAttribute(NAME_TAG, name);
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}
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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protected void writeChildren(FreeColXMLWriter xw) throws XMLStreamException {
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super.writeChildren(xw);
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for (Tile tile : tiles) {
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xw.writeStartElement(TILE_REFERENCE_TAG);
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xw.writeAttribute(ID_ATTRIBUTE_TAG, tile.getId());
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xw.writeEndElement();
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}
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public void readAttributes(FreeColXMLReader xr) throws XMLStreamException {
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super.readAttributes(xr);
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nameKey = xr.getAttribute(NAME_KEY_TAG, (String)null);
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name = xr.getAttribute(NAME_TAG, (String)null);
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public void readChildren(FreeColXMLReader xr) throws XMLStreamException {
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// Clear containers.
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this.tiles = new ArrayList<>();
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super.readChildren(xr);
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public void readChild(FreeColXMLReader xr) throws XMLStreamException {
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final String tag = xr.getLocalName();
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if (TILE_REFERENCE_TAG.equals(tag)) {
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tiles.add(xr.makeFreeColObject(getGame(), ID_ATTRIBUTE_TAG, Tile.class, true));
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xr.closeTag(TILE_REFERENCE_TAG);
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} else {
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super.readChild(xr);
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}
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}
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/**
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* {@inheritDoc}
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*/
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public String getXMLTagName() {
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return TAG;
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}
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// Override Object
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/**
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* {@inheritDoc}
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*/
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@Override
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public String toString() {
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return "[" + getId() + "]";
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}
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}
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