CWE-ou-minkata/Sources/Plasma/NucleusLib/pnKeyedObject/plUoid.h

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*==LICENSE==*/
//////////////////////////////////////////////////////////////////////////////
//
//  plUoid - A Unique Object IDentifier -- basically, each unique Uoid refers
//           to one and exactly one object.
//           To define such, it contains three elements:
//               - A plLocation, which specifies an (age,chapter,page) combo
//                 (as a sequence number)
//               - A creatable class type (from plFactory)
//               - An object name
//
//////////////////////////////////////////////////////////////////////////////

#ifndef plUoid_h_inc
#define plUoid_h_inc

#include "HeadSpin.h"
#include "plFixedKey.h"
#include "plLoadMask.h"

class hsStream;

//// plLocation //////////////////////////////////////////////////////////////

class plLocation
{
public:
    enum LocFlags
    {
        kLocalOnly  = 0x1,  // Set if nothing in the room saves state.
        kVolatile   = 0x2,  // Set is nothing in the room persists when the server exits.
        kReserved   = 0x4,
        kBuiltIn    = 0x8,
        kItinerant  = 0x10,
    };

protected:
    uint32_t fSequenceNumber;
    uint16_t fFlags;

    enum 
    {
        kGlobalFixedLocIdx = 0,     // Fixed keys go here, think of as "global,fixed,keys"
        kSceneViewerLocIdx = 1,

        kLocalLocStartIdx = 3,      // These are a range of #s that go to local, testing-only pages.
        kLocalLocEndIdx = 32,       // You can't go over the network with any keys with these locs.

        kNormalLocStartIdx = kLocalLocEndIdx + 1,

        kReservedLocStart = 0xff000000, // Reserved locations are ones that aren't real game locations,                                     
        kGlobalServerLocIdx = kReservedLocStart,    // Global pool room for the server. Only the server gets this one

        kReservedLocAvailableStart = kGlobalServerLocIdx + 1,   // This is the start of the *really* available ones
        kReservedLocEnd = 0xfffffffe,   // But instead act as a holding place for data

        kInvalidLocIdx = 0xffffffff
    };

    plLocation(uint32_t seqNum, uint16_t flags=0) : fFlags(flags) { Set(seqNum); }

public:
    plLocation() { Invalidate(); }
    plLocation(const plLocation& toCopyFrom);
    ~plLocation() {}

    void    Invalidate();
    hsBool  IsValid() const;
    hsBool  IsReserved() const;
    hsBool  IsItinerant() const;
    void    Set(uint32_t seqNum);
    uint32_t  GetSequenceNumber() const { return fSequenceNumber; }
    hsBool  IsVirtual() const;

    void    SetFlags(uint16_t flags) { fFlags |= flags; }
    uint16_t  GetFlags() const { return fFlags; }

    void    Read(hsStream* s);
    void    Write(hsStream* s) const;

    hsBool operator==(const plLocation& loc) const;
    hsBool operator!=(const plLocation& loc) const { return !(loc == *this); }
    plLocation& operator=(const plLocation& loc);
    bool operator<(const plLocation& loc ) const { return fSequenceNumber < loc.fSequenceNumber; }

    // THIS SHOULD BE FOR DEBUGGING ONLY <hint hint>
    char* StringIze(char* str) const;  // Format to displayable string. Returns the same string for convenience

    static plLocation MakeReserved(uint32_t number);
    static plLocation MakeNormal(uint32_t number);

    static const plLocation kGlobalFixedLoc;
    static const plLocation kSceneViewerLoc;
    static const plLocation kLocalStartLoc;
    static const plLocation kLocalEndLoc;
    static const plLocation kNormalStartLoc;
    static const plLocation kGlobalServerLoc;
    static const plLocation kInvalidLoc;
};

//// plUoid //////////////////////////////////////////////////////////////////

class plUoid
{
public:
    plUoid() { fObjectName = nil; Invalidate(); }
    plUoid(const plLocation& location, uint16_t classType, const char* objectName, const plLoadMask& m=plLoadMask::kAlways);
    plUoid(plFixedKeyId fixedKey);
    plUoid(const plUoid& src);
    ~plUoid();

    const plLocation&   GetLocation() const { return fLocation; }
    uint16_t              GetClassType() const { return fClassType; }
    const char*         GetObjectName() const { return fObjectName; }
    const plLoadMask&   GetLoadMask() const { return fLoadMask; }

    void Read(hsStream* s);
    void Write(hsStream* s) const;

    void Invalidate();
    hsBool IsValid() const;

    plUoid& operator=(const plUoid& u);
    hsBool  operator==(const plUoid& u) const;
    hsBool  operator!=(const plUoid& u) const { return !operator==(u); }

    hsBool  IsClone() const             { return fCloneID != 0; }
    uint32_t  GetClonePlayerID() const    { return fClonePlayerID; }
    uint32_t  GetCloneID() const          { return fCloneID; }
    void    SetClone(uint32_t playerID, uint32_t cloneID) { hsAssert(cloneID < 0xffff, "Clone id too high"); fCloneID = uint16_t(cloneID); fClonePlayerID = playerID; }

    uint32_t GetObjectID() const { return fObjectID; }
    // Export time only.  Only plRegistryKeyList should call this.
    void SetObjectID(uint32_t id) { fObjectID = id; }

    // THIS SHOULD BE FOR DEBUGGING ONLY <hint hint>
    char* StringIze(char* str) const;  // Format to displayable string

protected:
    enum ContentsFlags  // for read/write functions
    {
        kHasCloneIDs    = 0x1,
        kHasLoadMask    = 0x2,
    };

    uint32_t      fObjectID;
    uint32_t      fClonePlayerID; // The ID of the player who made this clone
    uint16_t      fCloneID;       // The ID of this clone (unique per client)
    uint16_t      fClassType;
    char*       fObjectName;
    plLocation  fLocation;
    plLoadMask  fLoadMask;
};

#endif // plUoid_h_inc