Move visit query to a separate class, remove no longer needed Cast.h

server/queries/VisitQueries.cpp

@@ -0,0 +1,47 @@
+/*
+ * VisitQueries.cpp, part of VCMI engine
+ *
+ * Authors: listed in file AUTHORS in main folder
+ *
+ * License: GNU General Public License v2.0 or later
+ * Full text of license available in license.txt file, in main folder
+ *
+ */
+#include "StdInc.h"
+#include "VisitQueries.h"
+
+#include "QueriesProcessor.h"
+#include "../CGameHandler.h"
+#include "../../lib/mapObjects/CGHeroInstance.h"
+
+CObjectVisitQuery::CObjectVisitQuery(CGameHandler * owner, const CGObjectInstance * Obj, const CGHeroInstance * Hero):
+	CQuery(owner), visitedObject(Obj), visitingHero(Hero), removeObjectAfterVisit(false)
+{
+	addPlayer(Hero->tempOwner);
+}
+
+bool CObjectVisitQuery::blocksPack(const CPack *pack) const
+{
+	//During the visit itself ALL actions are blocked.
+	//(However, the visit may trigger a query above that'll pass some.)
+	return true;
+}
+
+void CObjectVisitQuery::onRemoval(PlayerColor color)
+{
+	gh->objectVisitEnded(*this);
+
+	//TODO or should it be destructor?
+	//Can object visit affect 2 players and what would be desired behavior?
+	if(removeObjectAfterVisit)
+		gh->removeObject(visitedObject, color);
+}
+
+void CObjectVisitQuery::onExposure(QueryPtr topQuery)
+{
+	//Object may have been removed and deleted.
+	if(gh->isValidObject(visitedObject))
+		topQuery->notifyObjectAboutRemoval(visitedObject, visitingHero);
+
+	owner->popIfTop(*this);
+}