/**
* 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.core.builders;
import java.util.Iterator;
import java.util.LinkedList;
public class BuildingSlotIterator {
private static int ITERATIONS_MAX = 500;
private final LinkedList<BuildingSlotBlock> buildList;
private Iterator<BuildingSlotBlock> current;
private int nbIterations;
/**
* Creates an iterator on the list, which will cycle through iterations per
* chunk.
*/
public BuildingSlotIterator(LinkedList<BuildingSlotBlock> buildList) {
this.buildList = buildList;
}
public void startIteration() {
if (current == null || !current.hasNext()) {
current = buildList.iterator();
}
nbIterations = 0;
}
public boolean hasNext() {
return current.hasNext() && nbIterations < ITERATIONS_MAX;
}
public BuildingSlotBlock next() {
BuildingSlotBlock next = current.next();
if (next == null) {
// we're only accepting to pass through a null element if this is
// the first iteration. Otherwise, elements before null need to
// be worked out.
if (nbIterations == 0) {
current.remove();
}
}
nbIterations++;
return next;
}
public void remove() {
current.remove();
}
public void reset() {
current = buildList.iterator();
nbIterations = 0;
}
}