108 lines
4.6 KiB
C
108 lines
4.6 KiB
C
//=======================================================================
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// Copyright XashXT Group 2010 ©
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// net_encode.h - delta encode routines
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//=======================================================================
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#ifndef NET_ENCODE_H
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#define NET_ENCODE_H
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#define DT_BYTE BIT( 0 ) // A byte
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#define DT_SHORT BIT( 1 ) // 2 byte field
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#define DT_FLOAT BIT( 2 ) // A floating point field
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#define DT_INTEGER BIT( 3 ) // 4 byte integer
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#define DT_ANGLE BIT( 4 ) // A floating point angle ( will get masked correctly )
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#define DT_TIMEWINDOW BIT( 5 ) // A floating point timestamp, relative to sv.time
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// and re-encoded on the client relative to the client's clock
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#define DT_STRING BIT( 6 ) // A null terminated string, sent as 8 byte chars
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#define DT_SIGNED BIT( 7 ) // sign modificator
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#define offsetof( s, m ) (size_t)&(((s *)0)->m)
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#define NUM_FIELDS( x ) ((sizeof( x ) / sizeof( x[0] )) - 1)
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// helper macroses
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#define ENTS_DEF( x ) #x, offsetof( entity_state_t, x ), sizeof( ((entity_state_t *)0)->x )
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#define UCMD_DEF( x ) #x, offsetof( usercmd_t, x ), sizeof( ((usercmd_t *)0)->x )
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#define EVNT_DEF( x ) #x, offsetof( event_args_t, x ), sizeof( ((event_args_t *)0)->x )
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#define PHYS_DEF( x ) #x, offsetof( movevars_t, x ), sizeof( ((movevars_t *)0)->x )
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#define CLDT_DEF( x ) #x, offsetof( clientdata_t, x ), sizeof( ((clientdata_t *)0)->x )
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#define WPDT_DEF( x ) #x, offsetof( weapon_data_t, x ), sizeof( ((weapon_data_t *)0)->x )
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enum
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{
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CUSTOM_NONE = 0,
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CUSTOM_SERVER_ENCODE, // keyword "gamedll"
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CUSTOM_CLIENT_ENCODE, // keyword "client"
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};
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// struct info (filled by engine)
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typedef struct
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{
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const char *name;
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const int offset;
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const int size;
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} delta_field_t;
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typedef struct delta_s
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{
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const char *name;
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int offset; // in bytes
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int size; // used for bounds checking in DT_STRING
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int flags; // DT_INTEGER, DT_FLOAT etc
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float multiplier;
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float post_multiplier; // for DEFINE_DELTA_POST
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int bits; // how many bits we send\receive
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qboolean bInactive; // unsetted by user request
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} delta_t;
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typedef void (*pfnDeltaEncode)( delta_t *pFields, const byte *from, const byte *to );
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typedef struct
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{
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const char *pName;
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const delta_field_t *pInfo;
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const int maxFields; // maximum number of fields in struct
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int numFields; // may be merged during initialization
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delta_t *pFields;
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// added these for custom entity encode
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int customEncode;
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char funcName[32];
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pfnDeltaEncode userCallback;
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qboolean bInitialized;
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} delta_info_t;
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//
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// net_encode.c
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//
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void Delta_Init( void );
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void Delta_InitClient( void );
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void Delta_Shutdown( void );
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void Delta_InitFields( void );
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int Delta_NumTables( void );
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delta_info_t *Delta_FindStructByIndex( int index );
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void Delta_AddEncoder( char *name, pfnDeltaEncode encodeFunc );
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int Delta_FindField( delta_t *pFields, const char *fieldname );
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void Delta_SetField( delta_t *pFields, const char *fieldname );
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void Delta_UnsetField( delta_t *pFields, const char *fieldname );
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void Delta_SetFieldByIndex( struct delta_s *pFields, int fieldNumber );
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void Delta_UnsetFieldByIndex( struct delta_s *pFields, int fieldNumber );
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// send table over network
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void Delta_WriteTableField( sizebuf_t *msg, int tableIndex, const delta_t *pField );
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void Delta_ParseTableField( sizebuf_t *msg );
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// encode routines
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void MSG_WriteDeltaUsercmd( sizebuf_t *msg, struct usercmd_s *from, struct usercmd_s *to );
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void MSG_ReadDeltaUsercmd( sizebuf_t *msg, struct usercmd_s *from, struct usercmd_s *to );
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void MSG_WriteDeltaEvent( sizebuf_t *msg, struct event_args_s *from, struct event_args_s *to );
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void MSG_ReadDeltaEvent( sizebuf_t *msg, struct event_args_s *from, struct event_args_s *to );
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qboolean MSG_WriteDeltaMovevars( sizebuf_t *msg, struct movevars_s *from, struct movevars_s *to );
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void MSG_ReadDeltaMovevars( sizebuf_t *msg, struct movevars_s *from, struct movevars_s *to );
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void MSG_WriteClientData( sizebuf_t *msg, struct clientdata_s *from, struct clientdata_s *to, float timebase );
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void MSG_ReadClientData( sizebuf_t *msg, struct clientdata_s *from, struct clientdata_s *to, float timebase );
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void MSG_WriteWeaponData( sizebuf_t *msg, struct weapon_data_s *from, struct weapon_data_s *to, float timebase, int index );
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void MSG_ReadWeaponData( sizebuf_t *msg, struct weapon_data_s *from, struct weapon_data_s *to, float timebase );
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void MSG_WriteDeltaEntity( struct entity_state_s *from, struct entity_state_s *to, sizebuf_t *msg, qboolean force, qboolean player, float timebase );
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qboolean MSG_ReadDeltaEntity( sizebuf_t *msg, struct entity_state_s *from, struct entity_state_s *to, int num, qboolean player, float timebase );
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#endif//NET_ENCODE_H
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