de.winniehell.battlebeavers.storage.SoldierDeserializer.java Source code

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/*
   (c) winniehell (2012)
    
   This file is part of the game Battle Beavers.
    
   Battle Beavers 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 3 of the License, or
   (at your option) any later version.
    
   Battle Beavers is distributed in the hope that it will be fun,
   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 Battle Beavers. If not, see <http://www.gnu.org/licenses/>.
*/

package de.winniehell.battlebeavers.storage;

import java.lang.reflect.Type;
import java.util.Iterator;

import de.winniehell.battlebeavers.ingame.Soldier;
import de.winniehell.battlebeavers.ingame.Tile;
import de.winniehell.battlebeavers.ingame.WayPoint;

import com.google.gson.JsonArray;
import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonDeserializer;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParseException;

/**
 * deserializer class for {@link Soldier}
 * @author <a href="https://github.com/winniehell/">winniehell</a>
 */
class SoldierDeserializer implements JsonDeserializer<Soldier> {
    @Override
    public Soldier deserialize(final JsonElement pJson, final Type pType, final JsonDeserializationContext pContext)
            throws JsonParseException {
        if (!pJson.isJsonObject()) {
            return null;
        }

        final JsonObject object = pJson.getAsJsonObject();

        if (!object.has("id") || !object.has("team") || !object.has("tile") || !object.has("view_angle")
                || !object.has("hp")) {
            return null;
        }

        final Soldier soldier = new Soldier(object.get("team").getAsInt(),
                (Tile) pContext.deserialize(object.get("tile"), Tile.class));

        soldier.setId(object.get("id").getAsInt());
        soldier.setRotation(object.get("view_angle").getAsFloat());
        soldier.setHp(object.get("hp").getAsInt());

        if (object.has("waypoints") && object.get("waypoints").isJsonArray()) {
            currentSoldier = soldier;

            synchronized (currentSoldier) {
                final JsonArray waypoints = object.get("waypoints").getAsJsonArray();

                final Iterator<JsonElement> it = waypoints.iterator();

                if (it.hasNext()) {
                    final WayPoint firstWaypoint = pContext.deserialize(it.next(), WayPoint.class);

                    if (firstWaypoint.getAim() != null) {
                        soldier.getFirstWaypoint().setAim(firstWaypoint.getAim().getTile());
                    }
                }

                while (it.hasNext()) {
                    final WayPoint waypoint = pContext.deserialize(it.next(), WayPoint.class);

                    soldier.addWayPoint(waypoint);
                }

                currentSoldier = null;
            }
        }

        return soldier;
    }

    static Soldier currentSoldier;
}