[maven-release-plugin] prepare release 5.6.3

CHANGELOG.txt

@@ -1,3 +1,26 @@
+5.6.3:
+- Added helper WGBukkit class to get references to WorldGuard from other plugins.
+- Added physics.vine-like-rope-ladders to make ladders work like vines. As long as the
+    top ladder block is present, ladder blocks will hold even if they have no block
+    behind them, like a rope ladder.
+- Fixed NullPointerException in PlayerInteractEvent caused by potion blocking.
+- Fixed mobs.block-{item-frame,painting}-destroy not working.
+
+Thank you to def for testing the above fixes and features.
+
+5.6.2:
+- Fixed potion blocking not working well for splash potions.
+
+5.6.1:
+- Added a mycelium-spread region flag.
+- Added a dynamics.disable-mycelium-spread configuration setting.
+- Added new gameplay.block-potions option. For example:
+    gameplay:
+        block-potions: [invisibility, speed]
+- Fixed a bug in the entity explosion event handler that caused a NullPointerException.
+
+Thank you for gabizou for his contribution in this release.
+
 5.6:
 - Added official support for Minecraft 1.4. Support for 1.3.2 (and below) is still
     provided in this release.

pom.xml

@@ -2,7 +2,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.sk89q</groupId>
   <artifactId>worldguard</artifactId>
-  <version>5.6</version>
+  <version>5.6.3</version>
   <name>WorldGuard</name>
   <description>WorldGuard protects your Minecraft servers.</description>
   <licenses>
@@ -46,7 +46,7 @@
     <dependency>
       <groupId>org.bukkit</groupId>
       <artifactId>bukkit</artifactId>
-      <version>1.4.2-R0.2-SNAPSHOT</version>
+      <version>1.4.2-R0.2</version>
       <scope>compile</scope>
     </dependency>
     <dependency>

src/main/java/com/sk89q/worldguard/bukkit/WorldConfiguration.java

@@ -31,6 +31,7 @@ import com.sk89q.worldguard.chest.SignChestProtection;
 import org.bukkit.block.Block;
 import org.bukkit.entity.EntityType;
 import org.bukkit.entity.Player;
+import org.bukkit.potion.PotionEffectType;
 
 import java.io.File;
 import java.io.FileNotFoundException;
@@ -74,10 +75,13 @@ public class WorldConfiguration {
     public boolean simulateSponge;
     public int spongeRadius;
     public boolean disableExpDrops;
+    public Set<PotionEffectType> blockPotions;
+    public boolean blockPotionsAlways;
     public boolean pumpkinScuba;
     public boolean redstoneSponges;
     public boolean noPhysicsGravel;
     public boolean noPhysicsSand;
+    public boolean ropeLadders;
     public boolean allowPortalAnywhere;
     public Set<Integer> preventWaterDamage;
     public boolean blockLighter;
@@ -143,6 +147,7 @@ public class WorldConfiguration {
     public boolean disableIceFormation;
     public boolean disableLeafDecay;
     public boolean disableGrassGrowth;
+    public boolean disableMyceliumSpread;
     public boolean disableEndermanGriefing;
     public boolean regionInvinciblityRemovesMobs;
     public boolean disableDeathMessages;
@@ -287,6 +292,18 @@ public class WorldConfiguration {
         disableExpDrops = getBoolean("protection.disable-xp-orb-drops", false);
         disableObsidianGenerators = getBoolean("protection.disable-obsidian-generators", false);
 
+        blockPotions = new HashSet<PotionEffectType>();
+        for (String potionName : getStringList("gameplay.block-potions", null)) {
+            PotionEffectType effect = PotionEffectType.getByName(potionName);
+
+            if (effect == null) {
+                plugin.getLogger().warning("Unknown potion effect type '" + potionName + "'");
+            } else {
+                blockPotions.add(effect);
+            }
+        }
+        blockPotionsAlways = getBoolean("gameplay.block-potions-overly-reliably", false);
+
         simulateSponge = getBoolean("simulation.sponge.enable", true);
         spongeRadius = Math.max(1, getInt("simulation.sponge.radius", 3)) - 1;
         redstoneSponges = getBoolean("simulation.sponge.redstone", false);
@@ -296,6 +313,7 @@ public class WorldConfiguration {
 
         noPhysicsGravel = getBoolean("physics.no-physics-gravel", false);
         noPhysicsSand = getBoolean("physics.no-physics-sand", false);
+        ropeLadders = getBoolean("physics.vine-like-rope-ladders", false);
         allowPortalAnywhere = getBoolean("physics.allow-portal-anywhere", false);
         preventWaterDamage = new HashSet<Integer>(getIntList("physics.disable-water-damage-blocks", null));
 
@@ -359,6 +377,7 @@ public class WorldConfiguration {
         disableIceFormation = getBoolean("dynamics.disable-ice-formation", false);
         disableLeafDecay = getBoolean("dynamics.disable-leaf-decay", false);
         disableGrassGrowth = getBoolean("dynamics.disable-grass-growth", false);
+        disableMyceliumSpread = getBoolean("dynamics.disable-mycelium-spread", false);
 
         useRegions = getBoolean("regions.enable", true);
         regionInvinciblityRemovesMobs = getBoolean("regions.invincibility-removes-mobs", false);

src/main/java/com/sk89q/worldguard/bukkit/WorldGuardBlockListener.java

@@ -22,6 +22,7 @@ import static com.sk89q.worldguard.bukkit.BukkitUtil.toVector;
 
 import org.bukkit.ChatColor;
 import org.bukkit.Location;
+import org.bukkit.Material;
 import org.bukkit.World;
 import org.bukkit.block.Block;
 import org.bukkit.entity.Player;
@@ -31,6 +32,7 @@ import org.bukkit.event.Listener;
 import org.bukkit.event.block.BlockBreakEvent;
 import org.bukkit.event.block.BlockBurnEvent;
 import org.bukkit.event.block.BlockDamageEvent;
+import org.bukkit.event.block.BlockDispenseEvent;
 import org.bukkit.event.block.BlockFadeEvent;
 import org.bukkit.event.block.BlockFormEvent;
 import org.bukkit.event.block.BlockFromToEvent;
@@ -45,6 +47,9 @@ import org.bukkit.event.block.LeavesDecayEvent;
 import org.bukkit.event.block.SignChangeEvent;
 import org.bukkit.event.block.BlockIgniteEvent.IgniteCause;
 import org.bukkit.inventory.ItemStack;
+import org.bukkit.potion.Potion;
+import org.bukkit.potion.PotionEffect;
+
 import com.sk89q.worldedit.Vector;
 import com.sk89q.worldedit.blocks.BlockType;
 import com.sk89q.worldedit.blocks.ItemType;
@@ -467,6 +472,13 @@ public class WorldGuardBlockListener implements Listener {
             event.setCancelled(true);
             return;
         }
+
+        if (wcfg.ropeLadders && event.getBlock().getType() == Material.LADDER) {
+            if (event.getBlock().getRelative(0, 1, 0).getType() == Material.LADDER) {
+                event.setCancelled(true);
+                return;
+            }
+        }
     }
 
     /*
@@ -726,6 +738,20 @@ public class WorldGuardBlockListener implements Listener {
                 return;
             }
         }
+
+        if (fromType == BlockID.MYCELIUM) {
+            if (wcfg.disableMyceliumSpread) {
+                event.setCancelled(true);
+                return;
+            }
+
+            if (wcfg.useRegions
+                    && !plugin.getGlobalRegionManager().allows(
+                            DefaultFlag.MYCELIUM_SPREAD, event.getBlock().getLocation())) {
+                event.setCancelled(true);
+                return;
+            }
+        }
     }
 
     /*
@@ -802,4 +828,26 @@ public class WorldGuardBlockListener implements Listener {
             }
         }
     }
+
+    /*
+     * Called when a block is damaged.
+     */
+    @EventHandler(priority = EventPriority.HIGH, ignoreCancelled = true)
+    public void onBlockDispense(BlockDispenseEvent event) {
+        ConfigurationManager cfg = plugin.getGlobalStateManager();
+        WorldConfiguration wcfg = cfg.get(event.getBlock().getWorld());
+
+        if (wcfg.blockPotions.size() > 0) {
+            ItemStack item = event.getItem();
+            if (item.getType() == Material.POTION) {
+                Potion potion = Potion.fromItemStack(item);
+                for (PotionEffect effect : potion.getEffects()) {
+                    if (potion.isSplash() && wcfg.blockPotions.contains(effect.getType())) {
+                        event.setCancelled(true);
+                        return;
+                    }
+                }
+            }
+        }
+    }
 }

src/main/java/com/sk89q/worldguard/bukkit/WorldGuardEntityListener.java

@@ -40,6 +40,7 @@ import org.bukkit.entity.Player;
 import org.bukkit.entity.Projectile;
 import org.bukkit.entity.TNTPrimed;
 import org.bukkit.entity.Tameable;
+import org.bukkit.entity.ThrownPotion;
 import org.bukkit.entity.Wolf;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.EventPriority;
@@ -62,6 +63,7 @@ import org.bukkit.event.entity.PigZapEvent;
 import org.bukkit.event.entity.PlayerDeathEvent;
 import org.bukkit.event.entity.PotionSplashEvent;
 import org.bukkit.inventory.ItemStack;
+import org.bukkit.potion.PotionEffect;
 
 import com.sk89q.worldedit.Vector;
 import com.sk89q.worldedit.blocks.BlockID;
@@ -496,108 +498,111 @@ public class WorldGuardEntityListener implements Listener {
             return;
         }
 
-        if (ent.getType() == witherType) {
-            if (wcfg.blockWitherBlockDamage) {
-                event.blockList().clear();
-                return;
+        // Not all explosions come from an entity
+        if (ent != null) {
+            if (ent.getType() == witherType) {
+                if (wcfg.blockWitherBlockDamage) {
+                    event.blockList().clear();
+                    return;
+                }
+
+                if (wcfg.blockWitherExplosions) {
+                    event.setCancelled(true);
+                    return;
+                }
             }
 
-            if (wcfg.blockWitherExplosions) {
-                event.setCancelled(true);
-                return;
-            }
-        }
+            if (ent.getType() == witherSkullType) {
+                if (wcfg.blockWitherSkullBlockDamage) {
+                    event.blockList().clear();
+                    return;
+                }
 
-        if (ent.getType() == witherSkullType) {
-            if (wcfg.blockWitherSkullBlockDamage) {
-                event.blockList().clear();
-                return;
+                if (wcfg.blockWitherSkullExplosions) {
+                    event.setCancelled(true);
+                    return;
+                }
             }
 
-            if (wcfg.blockWitherSkullExplosions) {
-                event.setCancelled(true);
-                return;
-            }
-        }
+            if (ent instanceof Creeper) {
+                if (wcfg.blockCreeperBlockDamage) {
+                    event.blockList().clear();
+                    return;
+                }
 
-        if (ent instanceof Creeper) {
-            if (wcfg.blockCreeperBlockDamage) {
-                event.blockList().clear();
-                return;
-            }
+                if (wcfg.blockCreeperExplosions) {
+                    event.setCancelled(true);
+                    return;
+                }
 
-            if (wcfg.blockCreeperExplosions) {
-                event.setCancelled(true);
-                return;
-            }
+                if (wcfg.useRegions) {
+                    if (wcfg.useRegions) {
+                        RegionManager mgr = plugin.getGlobalRegionManager().get(world);
+
+                        for (Block block : event.blockList()) {
+                            if (!mgr.getApplicableRegions(toVector(block)).allows(DefaultFlag.CREEPER_EXPLOSION)) {
+                                event.blockList().clear();
+                                return;
+                            }
+                        }
+                    }
+                }
+            } else if (ent instanceof EnderDragon) {
+                if (wcfg.blockEnderDragonBlockDamage) {
+                    event.blockList().clear();
+                    return;
+                }
 
-            if (wcfg.useRegions) {
                 if (wcfg.useRegions) {
                     RegionManager mgr = plugin.getGlobalRegionManager().get(world);
 
                     for (Block block : event.blockList()) {
-                        if (!mgr.getApplicableRegions(toVector(block)).allows(DefaultFlag.CREEPER_EXPLOSION)) {
+                        if (!mgr.getApplicableRegions(toVector(block)).allows(DefaultFlag.ENDERDRAGON_BLOCK_DAMAGE)) {
                             event.blockList().clear();
                             return;
                         }
                     }
                 }
-            }
-        } else if (ent instanceof EnderDragon) {
-            if (wcfg.blockEnderDragonBlockDamage) {
-                event.blockList().clear();
-                return;
-            }
+            } else if (ent instanceof TNTPrimed) {
+                if (wcfg.blockTNTBlockDamage) {
+                    event.blockList().clear();
+                    return;
+                }
 
-            if (wcfg.useRegions) {
-                RegionManager mgr = plugin.getGlobalRegionManager().get(world);
+                if (wcfg.blockTNTExplosions) {
+                    event.setCancelled(true);
+                    return;
+                }
 
-                for (Block block : event.blockList()) {
-                    if (!mgr.getApplicableRegions(toVector(block)).allows(DefaultFlag.ENDERDRAGON_BLOCK_DAMAGE)) {
-                        event.blockList().clear();
-                        return;
+                if (wcfg.useRegions) {
+                    RegionManager mgr = plugin.getGlobalRegionManager().get(world);
+
+                    for (Block block : event.blockList()) {
+                        if (!mgr.getApplicableRegions(toVector(block)).allows(DefaultFlag.TNT)) {
+                            event.blockList().clear();
+                            return;
+                        }
                     }
                 }
-            }
-        } else if (ent instanceof TNTPrimed) {
-            if (wcfg.blockTNTBlockDamage) {
-                event.blockList().clear();
-                return;
-            }
-
-            if (wcfg.blockTNTExplosions) {
-                event.setCancelled(true);
-                return;
-            }
-
-            if (wcfg.useRegions) {
-                RegionManager mgr = plugin.getGlobalRegionManager().get(world);
-
-                for (Block block : event.blockList()) {
-                    if (!mgr.getApplicableRegions(toVector(block)).allows(DefaultFlag.TNT)) {
-                        event.blockList().clear();
-                        return;
-                    }
+            } else if (ent instanceof Fireball) {
+                if (wcfg.blockFireballBlockDamage) {
+                    event.blockList().clear();
+                    return;
                 }
-            }
-        } else if (ent instanceof Fireball) {
-            if (wcfg.blockFireballBlockDamage) {
-                event.blockList().clear();
-                return;
-            }
 
-            if (wcfg.blockFireballExplosions) {
-                event.setCancelled(true);
-                return;
-            }
+                if (wcfg.blockFireballExplosions) {
+                    event.setCancelled(true);
+                    return;
+                }
 
-            if (wcfg.useRegions) {
-                RegionManager mgr = plugin.getGlobalRegionManager().get(world);
+                if (wcfg.useRegions) {
+                    RegionManager mgr = plugin.getGlobalRegionManager().get(world);
 
-                for (Block block : event.blockList()) {
-                    if (!mgr.getApplicableRegions(toVector(block)).allows(DefaultFlag.GHAST_FIREBALL)) {
-                        event.blockList().clear();
-                        return;
+                    for (Block block : event.blockList()) {
+                        if (!mgr.getApplicableRegions(toVector(block)).allows(DefaultFlag.GHAST_FIREBALL)) {
+                            event.blockList().clear();
+                            return;
+                        }
                     }
                 }
             }
@@ -628,7 +633,7 @@ public class WorldGuardEntityListener implements Listener {
             event.setCancelled(true);
             return;
         }
-        
+
         if (event.getEntityType() == witherType) {
             if (wcfg.blockWitherExplosions) {
                 event.setCancelled(true);
@@ -788,7 +793,7 @@ public class WorldGuardEntityListener implements Listener {
         } else if (ent.getType() == witherType) {
             ConfigurationManager cfg = plugin.getGlobalStateManager();
             WorldConfiguration wcfg = cfg.get(ent.getWorld());
-            
+
             if (wcfg.blockWitherBlockDamage || wcfg.blockWitherExplosions) {
                 event.setCancelled(true);
                 return;
@@ -808,14 +813,39 @@ public class WorldGuardEntityListener implements Listener {
 
     @EventHandler(ignoreCancelled = true)
     public void onPotionSplash(PotionSplashEvent event) {
-        GlobalRegionManager global = plugin.getGlobalRegionManager();
+        Entity entity = event.getEntity();
+        ThrownPotion potion = event.getPotion();
+
+        ConfigurationManager cfg = plugin.getGlobalStateManager();
+        WorldConfiguration wcfg = cfg.get(entity.getWorld());
+
+        if (wcfg.blockPotionsAlways && wcfg.blockPotions.size() > 0) {
+            boolean blocked = false;
+
+            for (PotionEffect effect : potion.getEffects()) {
+                if (wcfg.blockPotions.contains(effect.getType())) {
+                    blocked = true;
+                    break;
+                }
+            }
+
+            if (blocked) {
+                event.setCancelled(true);
+                return;
+            }
+        }
+
+        GlobalRegionManager regionMan = plugin.getGlobalRegionManager();
+
         int blockedEntities = 0;
         for (LivingEntity e : event.getAffectedEntities()) {
-            if (!global.allows(DefaultFlag.POTION_SPLASH, e.getLocation(), e instanceof Player ? plugin.wrapPlayer((Player) e) : null)) {
+            if (!regionMan.allows(DefaultFlag.POTION_SPLASH, e.getLocation(),
+                    e instanceof Player ? plugin.wrapPlayer((Player) e) : null)) {
                 event.setIntensity(e, 0);
                 ++blockedEntities;
             }
         }
+
         if (blockedEntities == event.getAffectedEntities().size()) {
             event.setCancelled(true);
         }

src/main/java/com/sk89q/worldguard/bukkit/WorldGuardHangingListener.java

@@ -35,6 +35,7 @@ import org.bukkit.event.EventPriority;
 import org.bukkit.event.Listener;
 import org.bukkit.event.hanging.HangingBreakByEntityEvent;
 import org.bukkit.event.hanging.HangingBreakEvent;
+import org.bukkit.event.hanging.HangingBreakEvent.RemoveCause;
 import org.bukkit.event.hanging.HangingPlaceEvent;
 import org.bukkit.event.player.PlayerInteractEntityEvent;
 
@@ -69,64 +70,71 @@ public class WorldGuardHangingListener implements Listener {
     }
 
     @EventHandler(priority = EventPriority.HIGH, ignoreCancelled = true)
-    public void onHangingingBreak(HangingBreakEvent breakEvent) {
-        if (!(breakEvent instanceof HangingBreakByEntityEvent)) {
-            return;
-        }
-
-        HangingBreakByEntityEvent event = (HangingBreakByEntityEvent) breakEvent;
+    public void onHangingingBreak(HangingBreakEvent event) {
         Hanging hanging = event.getEntity();
         World world = hanging.getWorld();
         ConfigurationManager cfg = plugin.getGlobalStateManager();
         WorldConfiguration wcfg = cfg.get(world);
 
-        if (event.getRemover() instanceof Player) {
-            Player player = (Player) event.getRemover();
+        if (event instanceof HangingBreakByEntityEvent) {
+            HangingBreakByEntityEvent entityEvent = (HangingBreakByEntityEvent) event;
+            if (entityEvent instanceof Player) {
+                Player player = (Player) entityEvent.getRemover();
 
-            if (wcfg.getBlacklist() != null) {
-                if (hanging instanceof Painting
-                        && !wcfg.getBlacklist().check(
-                            new BlockBreakBlacklistEvent(plugin.wrapPlayer(player),
-                                    toVector(player.getLocation()), ItemID.PAINTING), false, false)) {
-                    event.setCancelled(true);
-                    return;
-                } else if (hanging instanceof ItemFrame
-                        && !wcfg.getBlacklist().check(
-                            new BlockBreakBlacklistEvent(plugin.wrapPlayer(player),
-                                    toVector(player.getLocation()), ItemID.ITEM_FRAME), false, false)) {
-                    event.setCancelled(true);
-                    return;
+                if (wcfg.getBlacklist() != null) {
+                    if (hanging instanceof Painting
+                            && !wcfg.getBlacklist().check(
+                                new BlockBreakBlacklistEvent(plugin.wrapPlayer(player),
+                                        toVector(player.getLocation()), ItemID.PAINTING), false, false)) {
+                        event.setCancelled(true);
+                        return;
+                    } else if (hanging instanceof ItemFrame
+                            && !wcfg.getBlacklist().check(
+                                new BlockBreakBlacklistEvent(plugin.wrapPlayer(player),
+                                        toVector(player.getLocation()), ItemID.ITEM_FRAME), false, false)) {
+                        event.setCancelled(true);
+                        return;
+                    }
                 }
-            }
 
-            if (wcfg.useRegions) {
-                if (!plugin.getGlobalRegionManager().canBuild(player, hanging.getLocation())) {
-                    player.sendMessage(ChatColor.DARK_RED + "You don't have permission for this area.");
+                if (wcfg.useRegions) {
+                    if (!plugin.getGlobalRegionManager().canBuild(player, hanging.getLocation())) {
+                        player.sendMessage(ChatColor.DARK_RED + "You don't have permission for this area.");
+                        event.setCancelled(true);
+                        return;
+                    }
+                }
+            } else {
+                if (entityEvent.getRemover() instanceof Creeper) {
+                    if (wcfg.blockCreeperBlockDamage || wcfg.blockCreeperExplosions) {
+                        event.setCancelled(true);
+                        return;
+                    }
+                    if (wcfg.useRegions && !plugin.getGlobalRegionManager().allows(DefaultFlag.CREEPER_EXPLOSION, hanging.getLocation())) {
+                        event.setCancelled(true);
+                        return;
+                    }
+                }
+
+                if (hanging instanceof Painting
+                        && (wcfg.blockEntityPaintingDestroy
+                        || (wcfg.useRegions
+                        && !plugin.getGlobalRegionManager().allows(DefaultFlag.ENTITY_PAINTING_DESTROY, hanging.getLocation())))) {
+                    event.setCancelled(true);
+                } else if (hanging instanceof ItemFrame
+                        && (wcfg.blockEntityItemFrameDestroy
+                        || (wcfg.useRegions
+                        && !plugin.getGlobalRegionManager().allows(DefaultFlag.ENTITY_ITEM_FRAME_DESTROY, hanging.getLocation())))) {
                     event.setCancelled(true);
-                    return;
                 }
             }
         } else {
-            if (event.getRemover() instanceof Creeper) {
-                if (wcfg.blockCreeperBlockDamage || wcfg.blockCreeperExplosions) {
-                    event.setCancelled(true);
-                    return;
-                }
-                if (wcfg.useRegions && !plugin.getGlobalRegionManager().allows(DefaultFlag.CREEPER_EXPLOSION, hanging.getLocation())) {
-                    event.setCancelled(true);
-                    return;
-                }
-            }
-
-            if (hanging instanceof Painting
-                    && (wcfg.blockEntityPaintingDestroy
-                    || (wcfg.useRegions
-                    && !plugin.getGlobalRegionManager().allows(DefaultFlag.ENTITY_PAINTING_DESTROY, hanging.getLocation())))) {
+            // Explosions from mobs are not covered by HangingBreakByEntity
+            if (hanging instanceof Painting && wcfg.blockEntityPaintingDestroy
+                    && event.getCause() == RemoveCause.EXPLOSION) {
                 event.setCancelled(true);
-            } else if (hanging instanceof ItemFrame
-                    && (wcfg.blockEntityItemFrameDestroy
-                    || (wcfg.useRegions
-                    && !plugin.getGlobalRegionManager().allows(DefaultFlag.ENTITY_ITEM_FRAME_DESTROY, hanging.getLocation())))) {
+            } else if (hanging instanceof ItemFrame && wcfg.blockEntityItemFrameDestroy
+                    && event.getCause() == RemoveCause.EXPLOSION) {
                 event.setCancelled(true);
             }
         }
@@ -181,7 +189,7 @@ public class WorldGuardHangingListener implements Listener {
                 event.setCancelled(true);
                 return;
             }
-            
+
             if (entity instanceof ItemFrame
                     && ((!plugin.getGlobalRegionManager().allows(
                             DefaultFlag.ENTITY_ITEM_FRAME_DESTROY, entity.getLocation())))) {

src/main/java/com/sk89q/worldguard/bukkit/WorldGuardPlayerListener.java

@@ -27,6 +27,7 @@ import com.sk89q.worldedit.blocks.ItemID;
 import org.bukkit.ChatColor;
 import org.bukkit.GameMode;
 import org.bukkit.Location;
+import org.bukkit.Material;
 import org.bukkit.World;
 import org.bukkit.block.Block;
 import org.bukkit.entity.Entity;
@@ -54,7 +55,8 @@ import org.bukkit.event.player.PlayerQuitEvent;
 import org.bukkit.event.player.PlayerRespawnEvent;
 import org.bukkit.inventory.ItemStack;
 import org.bukkit.plugin.PluginManager;
-
+import org.bukkit.potion.Potion;
+import org.bukkit.potion.PotionEffect;
 import com.sk89q.worldedit.Vector;
 import com.sk89q.worldedit.blocks.BlockType;
 import com.sk89q.worldguard.LocalPlayer;
@@ -420,6 +422,40 @@ public class WorldGuardPlayerListener implements Listener {
                 player.sendMessage(ChatColor.RED + "Infinite stack removed.");
             }
         }
+
+        if (wcfg.blockPotions.size() > 0) {
+            ItemStack item = event.getItem();
+            if (item != null && item.getType() == Material.POTION) {
+                PotionEffect blockedEffect = null;
+
+                Potion potion = Potion.fromItemStack(item);
+                for (PotionEffect effect : potion.getEffects()) {
+                    if (wcfg.blockPotions.contains(effect.getType())) {
+                        blockedEffect = effect;
+                        break;
+                    }
+                }
+
+                if (blockedEffect != null) {
+                    if (plugin.hasPermission(player, "worldguard.override.potions")) {
+                        if (potion.isSplash() && wcfg.blockPotionsAlways) {
+                            player.sendMessage(ChatColor.RED + "Sorry, potions with " +
+                                    blockedEffect.getType().getName() +
+                                    " can't be thrown, even if you have a permission to " +
+                                    "bypass it, due to limitations (and because overly-reliable potion blocking is on).");
+                            event.setUseItemInHand(Result.DENY);
+                            return;
+                        }
+                    } else {
+                        player.sendMessage(ChatColor.RED + "Sorry, potions with "
+                                + blockedEffect.getType().getName() + " are presently disabled.");
+                        event.setUseItemInHand(Result.DENY);
+                        return;
+                    }
+
+                }
+            }
+        }
     }
 
     /**

src/main/java/com/sk89q/worldguard/protection/flags/DefaultFlag.java

@@ -57,6 +57,7 @@ public final class DefaultFlag {
     public static final StateFlag MUSHROOMS = new StateFlag("mushroom-growth", true);
     public static final StateFlag LEAF_DECAY = new StateFlag("leaf-decay", true);
     public static final StateFlag GRASS_SPREAD = new StateFlag("grass-growth", true);
+    public static final StateFlag MYCELIUM_SPREAD = new StateFlag("mycelium-spread", true);
     public static final StateFlag ENDER_BUILD = new StateFlag("enderman-grief", true);
     public static final StateFlag INVINCIBILITY = new StateFlag("invincible", false, RegionGroup.ALL);
     public static final StateFlag EXP_DROPS = new StateFlag("exp-drops", true, RegionGroup.ALL);
@@ -100,8 +101,8 @@ public final class DefaultFlag {
         HEAL_AMOUNT, HEAL_DELAY, MIN_HEAL, MAX_HEAL,
         FEED_DELAY, FEED_AMOUNT, MIN_FOOD, MAX_FOOD,
         SNOW_FALL, SNOW_MELT, ICE_FORM, ICE_MELT, GAME_MODE,
-        MUSHROOMS, LEAF_DECAY, GRASS_SPREAD, SEND_CHAT, RECEIVE_CHAT,
-        FIRE_SPREAD, LAVA_FIRE, LAVA_FLOW, WATER_FLOW,
+        MUSHROOMS, LEAF_DECAY, GRASS_SPREAD, MYCELIUM_SPREAD, SEND_CHAT,
+        RECEIVE_CHAT, FIRE_SPREAD, LAVA_FIRE, LAVA_FLOW, WATER_FLOW,
         TELE_LOC, SPAWN_LOC, POTION_SPLASH,
         BLOCKED_CMDS, ALLOWED_CMDS, PRICE, BUYABLE,
     };

src/main/java/com/sk89q/worldguard/protection/flags/WGBukkit.java

@@ -0,0 +1,65 @@
+// $Id$
+/*
+ * This file is a part of WorldGuard.
+ * Copyright (c) sk89q <http://www.sk89q.com>
+ * Copyright (c) the WorldGuard team and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify it under the
+ * terms of the GNU Lesser General Public License as published by the Free Software
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+package com.sk89q.worldguard.protection.flags;
+
+import org.bukkit.Bukkit;
+import org.bukkit.World;
+
+import com.sk89q.worldguard.bukkit.WorldGuardPlugin;
+import com.sk89q.worldguard.protection.managers.RegionManager;
+
+/**
+ * Helper class to get a reference to WorldGuard and its components.
+ */
+public class WGBukkit {
+
+    private WGBukkit() {
+    }
+
+    /**
+     * Get the WorldGuard plugin. If WorldGuard isn't loaded yet, then this will
+     * return null.
+     * <p>
+     * If you are depending on WorldGuard in your plugin, you should place
+     * <code>softdepend: [WorldGuard]</code> or <code>depend: [WorldGuard]</code>
+     * in your plugin.yml so that this won't return null for you.
+     *
+     * @return the WorldGuard plugin or null
+     */
+    public static WorldGuardPlugin getPlugin() {
+        return (WorldGuardPlugin) Bukkit.getServer().getPluginManager().getPlugin("WorldGuard");
+    }
+
+    /**
+     * Returns the region manager for a given world. May return null if WorldGuard
+     * is not loaded or region protection is not enabled for the given world.
+     *
+     * @param world world
+     * @return a region manager or null
+     */
+    public static RegionManager getRegionManager(World world) {
+        WorldGuardPlugin plugin = getPlugin();
+        if (plugin == null) {
+            return null;
+        }
+
+        return plugin.getRegionManager(world);
+    }
+
+}