Initial changes.

* Recorder to recall player actions.
* Server precondtions to manage entity visiblity.

dGame/dUtilities/ServerPreconditions.hpp

@@ -0,0 +1,38 @@
+#pragma once
+
+#include <unordered_map>
+#include <unordered_set>
+#include <vector>
+#include "dCommonVars.h"
+#include "Preconditions.h"
+
+class Entity;
+
+namespace ServerPreconditions
+{
+
+extern std::unordered_map<LOT, std::vector<std::pair<bool, PreconditionExpression>>> m_Preconditions;
+
+extern std::unordered_map<LWOOBJID, LWOOBJID> m_SoloActors;
+
+extern std::unordered_map<LWOOBJID, std::unordered_set<LWOOBJID>> m_ExcludeForPlayer;
+
+void LoadPreconditions(std::string file);
+
+bool CheckPreconditions(Entity* target, Entity* entity);
+
+bool IsSoloActor(LWOOBJID actor);
+
+bool IsActingFor(LWOOBJID actor, LWOOBJID target);
+
+void AddSoloActor(LWOOBJID actor, LWOOBJID target);
+
+void RemoveSoloActor(LWOOBJID actor);
+
+void AddExcludeFor(LWOOBJID player, LWOOBJID target);
+
+void RemoveExcludeFor(LWOOBJID player, LWOOBJID target);
+
+bool IsExcludedFor(LWOOBJID player, LWOOBJID target);
+
+}