Public release of the DLU server code!

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dGame/dUtilities/Preconditions.h

@@ -0,0 +1,81 @@
+#pragma once
+#include <vector>
+
+#include "Entity.h"
+
+
+enum class PreconditionType
+{
+    ItemEquipped,
+    ItemNotEquipped,
+    HasItem,
+    DoesNotHaveItem,
+    HasAchievement,
+    MissionAvailable,
+    OnMission,
+    MissionComplete,
+    PetDeployed,
+    HasFlag,
+    WithinShape,
+    InBuild,
+    TeamCheck,
+    IsPetTaming,
+    HasFaction,
+    DoesNotHaveFaction,
+    HasRacingLicence,
+    DoesNotHaveRacingLicence,
+    LegoClubMember,
+    NoInteraction,
+	HasLevel = 22
+};
+
+
+class Precondition final
+{
+public:
+    explicit Precondition(uint32_t condition);
+	
+    bool Check(Entity* player, bool evaluateCosts = false) const;
+	
+private:
+    bool CheckValue(Entity* player, uint32_t value, bool evaluateCosts = false) const;
+	
+    PreconditionType type;
+
+    std::vector<uint32_t> values;
+
+    uint32_t count;
+};
+
+
+class PreconditionExpression final
+{
+public:
+    explicit PreconditionExpression(const std::string& conditions);
+
+    bool Check(Entity* player, bool evaluateCosts = false) const;
+	
+    ~PreconditionExpression();
+	
+private:
+    uint32_t condition = 0;
+
+    bool m_or = false;
+
+    bool empty = false;
+
+    PreconditionExpression* next = nullptr;
+};
+
+class Preconditions final
+{
+public:
+    static bool Check(Entity* player, uint32_t condition, bool evaluateCosts = false);
+
+    static PreconditionExpression CreateExpression(const std::string& conditions);
+
+	~Preconditions();
+	
+private:
+    static std::map<uint32_t, Precondition*> cache;
+};