Add hideifsneaking option for hiding players that are sneaking/crouching

src/main/java/org/dynmap/ClientUpdateComponent.java

@@ -35,6 +35,7 @@ public class ClientUpdateComponent extends Component {
         String worldName = world.getName();
         int hideifshadow = configuration.getInteger("hideifshadow", 15);
         int hideifunder = configuration.getInteger("hideifundercover", 15);
+        boolean hideifsneaking = configuration.getBoolean("hideifsneaking", false);
 
         s(u, "confighash", plugin.getConfigHashcode());
 
@@ -67,6 +68,8 @@ public class ClientUpdateComponent extends Component {
                         hide = true;
                 }
             }
+            if(hideifsneaking && p.isSneaking())
+                hide = true;
             
             /* Don't leak player location for world not visible on maps, or if sendposition disbaled */
             DynmapWorld pworld = MapManager.mapman.worldsLookup.get(p.getWorld().getName());

src/main/resources/configuration.txt

@@ -35,6 +35,8 @@ components:
   #  hideifshadow: 4
   #  # Optional - make player hidden when they are under cover (#=sky light level,0=underground,15=open to sky)
   #  hideifundercover: 14
+  #  # (Optional) if true, players that are crouching/sneaking will be hidden 
+  #  hideifsneaking: false
   #- class: org.dynmap.JsonFileClientUpdateComponent
   #  writeinterval: 1
   #  sendhealth: true
@@ -47,6 +49,7 @@ components:
   #  require-player-login-ip: false
   #  hideifshadow: 0
   #  hideifundercover: 0
+  #  hideifsneaking: false
    
   - class: org.dynmap.SimpleWebChatComponent
     allowchat: true