Add /f seechunk command for visualizing a chunk

src/main/java/com/massivecraft/factions/cmd/CmdSeeChunk.java

@@ -0,0 +1,63 @@
+package com.massivecraft.factions.cmd;
+
+import com.massivecraft.factions.FLocation;
+import com.massivecraft.factions.struct.Permission;
+import com.massivecraft.factions.util.VisualizeUtil;
+import org.bukkit.Location;
+import org.bukkit.Material;
+import org.bukkit.World;
+import org.bukkit.entity.Player;
+
+public class CmdSeeChunk extends FCommand {
+
+    public CmdSeeChunk() {
+        super();
+        aliases.add("seechunk");
+        aliases.add("sc");
+
+        permission = Permission.SEECHUNK.node;
+
+        senderMustBePlayer = true;
+        senderMustBeMember = false;
+        senderMustBeModerator = false;
+        senderMustBeAdmin = false;
+    }
+
+    @Override
+    public void perform() {
+        World world = me.getWorld();
+        FLocation flocation = new FLocation(me);
+        int chunkX = (int) flocation.getX();
+        int chunkZ = (int) flocation.getZ();
+
+        int blockX;
+        int blockZ;
+
+        blockX = chunkX*16;
+        blockZ = chunkZ*16;
+        showPillar(me, world, blockX, blockZ);
+
+        blockX = chunkX*16 + 15;
+        blockZ = chunkZ*16;
+        showPillar(me, world, blockX, blockZ);
+
+        blockX = chunkX*16;
+        blockZ = chunkZ*16 + 15;
+        showPillar(me, world, blockX, blockZ);
+
+        blockX = chunkX*16 + 15;
+        blockZ = chunkZ*16 + 15;
+        showPillar(me, world, blockX, blockZ);
+    }
+
+    @SuppressWarnings("deprecation")
+    public static void showPillar(Player player, World world, int blockX, int blockZ) {
+        for (int blockY = 0; blockY < world.getMaxHeight(); blockY++) {
+            Location loc = new Location(world, blockX, blockY, blockZ);
+            if (loc.getBlock().getType() != Material.AIR) continue;
+            int typeId = blockY % 5 == 0 ? Material.GLOWSTONE.getId() : Material.GLASS.getId();
+            VisualizeUtil.addLocation(player, loc, typeId);
+        }
+    }
+
+}