/*
* Copyright 2013 MovingBlocks
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.terasology.entitySystem.prefab.internal;
import com.google.common.base.Charsets;
import com.google.common.collect.Lists;
import org.terasology.asset.AssetLoader;
import org.terasology.entitySystem.entity.internal.EngineEntityManager;
import org.terasology.entitySystem.prefab.PrefabData;
import org.terasology.module.Module;
import org.terasology.persistence.serializers.EntityDataJSONFormat;
import org.terasology.persistence.serializers.PrefabSerializer;
import org.terasology.protobuf.EntityData;
import org.terasology.registry.CoreRegistry;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URL;
import java.util.List;
/**
* @author Immortius
*/
public class PrefabLoader implements AssetLoader<PrefabData> {
@Override
public PrefabData load(Module module, InputStream stream, List<URL> urls, List<URL> deltas) throws IOException {
BufferedReader reader = new BufferedReader(new InputStreamReader(stream, Charsets.UTF_8));
EntityData.Prefab prefabData = EntityDataJSONFormat.readPrefab(reader);
if (prefabData != null) {
EngineEntityManager entityManager = CoreRegistry.get(EngineEntityManager.class);
List<EntityData.Prefab> deltaData = Lists.newArrayListWithCapacity(deltas.size());
for (URL deltaUrl : deltas) {
try (BufferedReader deltaReader = new BufferedReader(new InputStreamReader(deltaUrl.openStream(), Charsets.UTF_8))) {
EntityData.Prefab delta = EntityDataJSONFormat.readPrefab(deltaReader);
deltaData.add(delta);
}
}
PrefabSerializer serializer = new PrefabSerializer(entityManager.getComponentLibrary(), entityManager.getTypeSerializerLibrary());
return serializer.deserialize(prefabData, deltaData);
}
return null;
}
}