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);
+        }
+    }
+
+}

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

@@ -55,6 +55,7 @@ public class FCmdRoot extends FCommand {
     public CmdSB cmdSB = new CmdSB();
     public CmdShowInvites cmdShowInvites = new CmdShowInvites();
     public CmdAnnounce cmdAnnounce = new CmdAnnounce();
+    public CmdSeeChunk cmdSeeChunk = new CmdSeeChunk();
 
     public FCmdRoot() {
         super();
@@ -126,6 +127,7 @@ public class FCmdRoot extends FCommand {
         this.addSubCommand(this.cmdSB);
         this.addSubCommand(this.cmdShowInvites);
         this.addSubCommand(this.cmdAnnounce);
+        this.addSubCommand(this.cmdSeeChunk);
     }
 
     @Override

src/main/java/com/massivecraft/factions/listeners/FactionsPlayerListener.java

@@ -8,6 +8,7 @@ import com.massivecraft.factions.scoreboards.sidebar.FDefaultSidebar;
 import com.massivecraft.factions.struct.Permission;
 import com.massivecraft.factions.struct.Relation;
 import com.massivecraft.factions.struct.Role;
+import com.massivecraft.factions.util.VisualizeUtil;
 import com.massivecraft.factions.zcore.util.TextUtil;
 import org.bukkit.Bukkit;
 import org.bukkit.Location;
@@ -90,6 +91,11 @@ public class FactionsPlayerListener implements Listener {
             return;
         }
 
+        // clear visualization
+        if (event.getFrom().getBlockX() != event.getTo().getBlockX() || event.getFrom().getBlockY() != event.getTo().getBlockY() || event.getFrom().getBlockZ() != event.getTo().getBlockZ()) {
+            VisualizeUtil.clear(event.getPlayer());
+        }
+
         // quick check to make sure player is moving between chunks; good performance boost
         if (event.getFrom().getBlockX() >> 4 == event.getTo().getBlockX() >> 4 && event.getFrom().getBlockZ() >> 4 == event.getTo().getBlockZ() >> 4 && event.getFrom().getWorld() == event.getTo().getWorld()) {
             return;

src/main/java/com/massivecraft/factions/struct/Permission.java

@@ -67,7 +67,8 @@ public enum Permission {
     UNCLAIM("unclaim"),
     UNCLAIM_ALL("unclaimall"),
     VERSION("version"),
-    SCOREBOARD("scoreboard");
+    SCOREBOARD("scoreboard"),
+    SEECHUNK("seechunk");
 
     public final String node;
 

src/main/java/com/massivecraft/factions/util/VisualizeUtil.java

@@ -0,0 +1,78 @@
+package com.massivecraft.factions.util;
+
+import org.bukkit.Location;
+import org.bukkit.block.Block;
+import org.bukkit.entity.Player;
+
+import java.util.*;
+import java.util.Map.Entry;
+
+public class VisualizeUtil {
+
+    protected static Map<UUID, Set<Location>> playerLocations = new HashMap<UUID, Set<Location>>();
+
+    public static Set<Location> getPlayerLocations(Player player) {
+        return getPlayerLocations(player.getUniqueId());
+    }
+
+    public static Set<Location> getPlayerLocations(UUID uuid) {
+        Set<Location> ret = playerLocations.get(uuid);
+        if (ret == null) {
+            ret = new HashSet<Location>();
+            playerLocations.put(uuid, ret);
+        }
+        return ret;
+    }
+
+    @SuppressWarnings("deprecation")
+    public static void addLocation(Player player, Location location, int typeId, byte data) {
+        getPlayerLocations(player).add(location);
+        player.sendBlockChange(location, typeId, data);
+    }
+
+    @SuppressWarnings("deprecation")
+    public static void addLocation(Player player, Location location, int typeId) {
+        getPlayerLocations(player).add(location);
+        player.sendBlockChange(location, typeId, (byte) 0);
+    }
+
+    @SuppressWarnings("deprecation")
+    public static void addLocations(Player player, Map<Location, Integer> locationMaterialIds) {
+        Set<Location> ploc = getPlayerLocations(player);
+        for (Entry<Location, Integer> entry : locationMaterialIds.entrySet()) {
+            ploc.add(entry.getKey());
+            player.sendBlockChange(entry.getKey(), entry.getValue(), (byte) 0);
+        }
+    }
+
+    @SuppressWarnings("deprecation")
+    public static void addLocations(Player player, Collection<Location> locations, int typeId) {
+        Set<Location> ploc = getPlayerLocations(player);
+        for (Location location : locations) {
+            ploc.add(location);
+            player.sendBlockChange(location, typeId, (byte) 0);
+        }
+    }
+
+    @SuppressWarnings("deprecation")
+    public static void addBlocks(Player player, Collection<Block> blocks, int typeId) {
+        Set<Location> ploc = getPlayerLocations(player);
+        for (Block block : blocks) {
+            Location location = block.getLocation();
+            ploc.add(location);
+            player.sendBlockChange(location, typeId, (byte) 0);
+        }
+    }
+
+    @SuppressWarnings("deprecation")
+    public static void clear(Player player) {
+        Set<Location> locations = getPlayerLocations(player);
+        if (locations == null) return;
+        for (Location location : locations) {
+            Block block = location.getWorld().getBlockAt(location);
+            player.sendBlockChange(location, block.getTypeId(), block.getData());
+        }
+        locations.clear();
+    }
+
+}

src/main/resources/plugin.yml

@@ -88,6 +88,7 @@ permissions:
       factions.unclaimall: true
       factions.scoreboard: true
       factions.showinvites: true
+      factions.seechunk: true
   factions.admin:
     description: hand over your admin rights
   factions.admin.any:
@@ -231,3 +232,5 @@ permissions:
     description: ability to toggle scoreboards
   factions.showinvites:
     description: show pending invites to your faction
+  factions.seechunk:
+    description: see the chunk you stand in