MassiveCore - Reworked VisibilityMixin

src/com/massivecraft/massivecore/command/type/sender/TypeSenderIdAbstract.java

@@ -158,7 +158,7 @@ public abstract class TypeSenderIdAbstract<T> extends TypeAbstract<T>
 		Set<String> ret = new MassiveSet<String>(ids.size());
 		for (String id : ids)
 		{
-			if ( ! Mixin.canSee(sender, id)) continue;
+			if ( ! Mixin.isVisible(id, sender)) continue;
 			String name = IdUtil.getName(id);
 			if (name == null) continue;
 			ret.add(name);

src/com/massivecraft/massivecore/engine/EngineMassiveCoreMain.java

@@ -147,7 +147,7 @@ public class EngineMassiveCoreMain extends EngineAbstract
 		{
 			if ( ! predicate.apply(senderName)) continue;
 			if (current.contains(senderName)) continue;
-			if (!Mixin.canSee(watcher, senderName)) continue;
+			if ( ! Mixin.isVisible(senderName, watcher)) continue;
 			
 			event.getTabCompletions().add(senderName);
 		}

src/com/massivecraft/massivecore/mixin/Mixin.java

@@ -236,9 +236,13 @@ public class Mixin
 	// STATIC EXPOSE: VISIBILITY
 	// -------------------------------------------- //
 	
-	public static boolean canSee(Object watcherObject, Object watcheeObject)
+	public static boolean isVisible(Object watcheeObject)
 	{
-		return getVisibilityMixin().canSee(watcherObject, watcheeObject);
+		return getVisibilityMixin().isVisible(watcheeObject);
+	}
+	public static boolean isVisible(Object watcheeObject, Object watcherObject)
+	{
+		return getVisibilityMixin().isVisible(watcheeObject, watcherObject);
 	}
 	
 	// -------------------------------------------- //

src/com/massivecraft/massivecore/mixin/VisibilityMixin.java

@@ -2,5 +2,6 @@ package com.massivecraft.massivecore.mixin;
 
 public interface VisibilityMixin
 {
-	public boolean canSee(Object watcherObject, Object watcheeObject);
+	public boolean isVisible(Object watcheeObject);
+	public boolean isVisible(Object watcheeObject, Object watcherObject);
 }

src/com/massivecraft/massivecore/mixin/VisibilityMixinDefault.java

@@ -3,6 +3,7 @@ package com.massivecraft.massivecore.mixin;
 import org.bukkit.entity.Player;
 
 import com.massivecraft.massivecore.util.IdUtil;
+import com.massivecraft.massivecore.util.MUtil;
 
 public class VisibilityMixinDefault extends VisibilityMixinAbstract
 {
@@ -18,14 +19,36 @@ public class VisibilityMixinDefault extends VisibilityMixinAbstract
 	// -------------------------------------------- //
 	
 	@Override
-	public boolean canSee(Object watcherObject, Object watcheeObject)
+	public boolean isVisible(Object watcheeObject)
 	{
-		Player pwatcher = IdUtil.getPlayer(watcherObject);
-		Player pwatchee = IdUtil.getPlayer(watcheeObject);
+		// The Bukkit API is not about general visibility.
+		// It only handles player to player visibility.
+		// With this in mind we loop to do some sort of approximation.
+		// If there is any other player who can not see then we are not visible.
+		// This is for the sake of security. Rather hide than display secret information.
 		
-		if (pwatcher == null) return true;
+		Player pwatchee = IdUtil.getPlayer(watcheeObject);
 		if (pwatchee == null) return true;
 		
+		for (Player pwatcher : MUtil.getOnlinePlayers())
+		{
+			if (pwatchee.equals(pwatcher)) continue;
+			if (pwatcher.canSee(pwatchee)) continue;
+			return false;
+		}
+		
+		return true;
+	}
+	
+	@Override
+	public boolean isVisible(Object watcheeObject, Object watcherObject)
+	{
+		Player pwatchee = IdUtil.getPlayer(watcheeObject);
+		Player pwatcher = IdUtil.getPlayer(watcherObject);
+				
+		if (pwatchee == null) return true;
+		if (pwatcher == null) return true;
+		
 		return pwatcher.canSee(pwatchee);
 	}
 	

src/com/massivecraft/massivecore/store/SenderEntity.java

@@ -122,9 +122,14 @@ public abstract class SenderEntity<E extends SenderEntity<E>> extends Entity<E>
 		return Mixin.getIp(this.getId());
 	}
 	
+	public boolean isVisible()
+	{
+		return Mixin.isVisible(this);
+	}
+	
 	public boolean isVisible(Object watcherObject)
 	{
-		return Mixin.canSee(watcherObject, this);
+		return Mixin.isVisible(this, watcherObject);
 	}
 	
 	public boolean isOnline(Object watcherObject)