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TravelerSet.java
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TravelerSet.java
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/**
* Copyright (c) 2011-2015, SpaceToad and the BuildCraft Team
* http://www.mod-buildcraft.com
* <p/>
* BuildCraft is distributed under the terms of the Minecraft Mod Public
* License 1.0, or MMPL. Please check the contents of the license located in
* http://www.mod-buildcraft.com/MMPL-1.0.txt
*/
package buildcraft.transport;
import java.util.Collection;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;
import com.google.common.collect.ForwardingSet;
public class TravelerSet extends ForwardingSet<TravelingItem> {
public boolean iterating;
private final Set<TravelingItem> items = new HashSet<TravelingItem>();
private final Set<TravelingItem> toLoad = new HashSet<TravelingItem>();
private final Set<TravelingItem> toAdd = new HashSet<TravelingItem>();
private final Set<TravelingItem> toRemove = new HashSet<TravelingItem>();
private int delay = 0;
private final PipeTransportItems transport;
public TravelerSet(PipeTransportItems transport) {
this.transport = transport;
}
@Override
protected Set<TravelingItem> delegate() {
return items;
}
@Override
public boolean add(TravelingItem item) {
if (iterating) {
return toAdd.add(item);
}
item.setContainer(transport.container);
items.add(item);
return true;
}
@Override
public boolean addAll(Collection<? extends TravelingItem> collection) {
if (iterating) {
return toAdd.addAll(collection);
}
return standardAddAll(collection);
}
@Override
public boolean remove(Object object) {
if (iterating) {
return toRemove.add((TravelingItem) object);
}
return delegate().remove(object);
}
@Override
public boolean removeAll(Collection<?> collection) {
throw new UnsupportedOperationException();
}
@Override
public boolean retainAll(Collection<?> collection) {
throw new UnsupportedOperationException();
}
void scheduleLoad(TravelingItem item) {
delay = 10;
toLoad.add(item);
}
private void loadScheduledItems() {
if (delay > 0) {
delay--;
return;
}
addAll(toLoad);
toLoad.clear();
}
private void addScheduledItems() {
addAll(toAdd);
toAdd.clear();
}
public boolean scheduleRemoval(TravelingItem item) {
return toRemove.add(item);
}
public boolean unscheduleRemoval(TravelingItem item) {
return toRemove.remove(item);
}
void removeScheduledItems() {
for (TravelingItem i : toRemove) {
i.cleanup();
items.remove(i);
}
toRemove.clear();
}
void flush() {
loadScheduledItems();
addScheduledItems();
removeScheduledItems();
}
@Override
public Iterator<TravelingItem> iterator() {
return items.iterator();
}
@Override
public void clear() {
if (iterating) {
toRemove.addAll(this);
} else {
items.clear();
}
}
}