Added option ("territoryBlockCreepers") to prevent creepers from destroying blocks if they explode inside faction owned territory, which defaults to disabled; if enabled, it prevents griefing by way of luring creepers into a faction's territory

note that creepers will still explode and hurt nearby players and mobs, they just won't destroy blocks

src/com/bukkit/mcteam/factions/Factions.java

@@ -42,6 +42,7 @@ public class Factions extends JavaPlugin {
 		pm.registerEvent(Event.Type.PLAYER_QUIT, this.playerListener, Event.Priority.Normal, this);
 		pm.registerEvent(Event.Type.ENTITY_DEATH, this.entityListener, Event.Priority.Normal, this);
 		pm.registerEvent(Event.Type.ENTITY_DAMAGED, this.entityListener, Event.Priority.Normal, this);
+		pm.registerEvent(Event.Type.ENTITY_EXPLODE, this.entityListener, Event.Priority.Normal, this);
 		pm.registerEvent(Event.Type.BLOCK_DAMAGED, this.blockListener, Event.Priority.Normal, this);
 		pm.registerEvent(Event.Type.BLOCK_PLACED, this.blockListener, Event.Priority.Normal, this);
 		pm.registerEvent(Event.Type.BLOCK_INTERACT, this.blockListener, Event.Priority.Normal, this);		

src/com/bukkit/mcteam/factions/entities/Conf.java

@@ -42,6 +42,7 @@ public class Conf {
 	public static int mapWidth = 49;
 
 	public static double territoryShieldFactor = 0.5;
+	public static boolean territoryBlockCreepers = false;
 	public static List<Material> territoryProtectedMaterials = new ArrayList<Material>();
 	
 	// Command names / aliases	

src/com/bukkit/mcteam/factions/listeners/FactionsEntityListener.java

@@ -4,15 +4,19 @@ import java.text.DecimalFormat;
 
 import org.bukkit.ChatColor;
 import org.bukkit.entity.Entity;
+import org.bukkit.entity.LivingEntity;
 import org.bukkit.entity.Player;
 import org.bukkit.event.entity.EntityDamageByEntityEvent;
 import org.bukkit.event.entity.EntityDamageByProjectileEvent;
 import org.bukkit.event.entity.EntityDamageEvent;
 import org.bukkit.event.entity.EntityDeathEvent;
+import org.bukkit.event.entity.EntityExplodeEvent;
 import org.bukkit.event.entity.EntityListener;
 
 import com.bukkit.mcteam.factions.Factions;
+import com.bukkit.mcteam.factions.entities.Board;
 import com.bukkit.mcteam.factions.entities.Conf;
+import com.bukkit.mcteam.factions.entities.Coord;
 import com.bukkit.mcteam.factions.entities.Follower;
 import com.bukkit.mcteam.factions.struct.Relation;
 
@@ -59,7 +63,20 @@ public class FactionsEntityListener extends EntityListener {
     		}
         }
 	}
-	
+
+	@Override
+	public void onEntityExplode(EntityExplodeEvent event)
+	{
+		if (Conf.territoryBlockCreepers && event.getEntity() instanceof LivingEntity)
+		{	// creeper which might need prevention, if inside faction territory
+			if (Board.get(event.getLocation().getWorld()).getFactionIdAt(Coord.from(event.getLocation())) > 0)
+			{
+				event.setCancelled(true);
+				return;
+			}
+		}
+	}
+
 	public boolean canDamagerHurtDamagee(Entity damager, Entity damagee, int damage) {
 		if ( ! (damager instanceof Player)) {
 			return true;