Factions/src/main/java/com/massivecraft/factions/cmd/CmdFactionsSetFill.java

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package com.massivecraft.factions.cmd;
import java.util.LinkedHashSet;
import java.util.Set;
import com.massivecraft.factions.Perm;
import com.massivecraft.factions.entity.BoardColl;
import com.massivecraft.factions.entity.Faction;
import com.massivecraft.factions.entity.MConf;
import com.massivecraft.massivecore.cmd.req.ReqHasPerm;
import com.massivecraft.massivecore.cmd.req.ReqIsPlayer;
import com.massivecraft.massivecore.ps.PS;
import com.massivecraft.massivecore.util.MUtil;
public class CmdFactionsSetFill extends CmdFactionsSetXSimple
{
// -------------------------------------------- //
// CONSTRUCT
// -------------------------------------------- //
public CmdFactionsSetFill()
{
// Aliases
this.addAliases("f", "fill");
// Requirements
this.addRequirements(ReqIsPlayer.get());
this.addRequirements(ReqHasPerm.get(Perm.SET_FILL.node));
}
// -------------------------------------------- //
// OVERRIDE
// -------------------------------------------- //
@Override
public Set<PS> getChunks()
{
// Common Startup
final PS chunk = PS.valueOf(me).getChunk(true);
final Set<PS> chunks = new LinkedHashSet<PS>();
// What faction (aka color) resides there?
// NOTE: Wilderness/None is valid.
final Faction color = BoardColl.get().getFactionAt(chunk);
// We start where we are!
chunks.add(chunk);
// Flood!
int max = MConf.get().setFillMax;
floodSearch(chunks, color, max);
// Limit Reached?
if (chunks.size() >= max)
{
msg("<b>Fill limit of <h>%d <b>reached.", max);
return null;
}
// OK!
return chunks;
}
// -------------------------------------------- //
// FLOOD FILL
// -------------------------------------------- //
public static void floodSearch(Set<PS> set, Faction color, int max)
{
// Clean
if (set == null) throw new NullPointerException("set");
if (color == null) throw new NullPointerException("color");
// Expand
Set<PS> expansion = new LinkedHashSet<PS>();
for (PS chunk : set)
{
Set<PS> neighbours = MUtil.set(
chunk.withChunkX(chunk.getChunkX() + 1),
chunk.withChunkX(chunk.getChunkX() - 1),
chunk.withChunkZ(chunk.getChunkZ() + 1),
chunk.withChunkZ(chunk.getChunkZ() - 1)
);
for (PS neighbour : neighbours)
{
if (set.contains(neighbour)) continue;
Faction faction = BoardColl.get().getFactionAt(neighbour);
if (faction == null) continue;
if (faction != color) continue;
expansion.add(neighbour);
}
}
set.addAll(expansion);
// No Expansion?
if (expansion.isEmpty()) return;
// Reached Max?
if (set.size() >= max) return;
// Recurse
floodSearch(set, color, max);
}
}