Function MSG_ReadDeltaPlayerstate

code/qcommon/msg.cpp:1175–1284

=================== MSG_ReadDeltaPlayerstate =================== */

===================
*/
void MSG_ReadDeltaPlayerstate (msg_t *msg, playerState_t *from, playerState_t *to ) {
	int			i;
	int			bits;
	const netField_t	*field;
	int			numFields;
	int			startBit, endBit;
	int			print;
	int			*fromF, *toF;
	playerState_t	dummy;

	if ( !from ) {
		from = &dummy;
		memset( &dummy, 0, sizeof( dummy ) );
	}
	*to = *from;

	if ( msg->bit == 0 ) {
		startBit = msg->readcount * 8 - GENTITYNUM_BITS;
	} else {
		startBit = ( msg->readcount - 1 ) * 8 + msg->bit - GENTITYNUM_BITS;
	}

	// shownet 2/3 will interleave with other printed info, -2 will
	// just print the delta records
	if ( cl_shownet->integer >= 2 || cl_shownet->integer == -2 ) {
		print = 1;
		Com_Printf( "%3i: playerstate ", msg->readcount );
	} else {
		print = 0;
	}

	numFields = sizeof( playerStateFields ) / sizeof( playerStateFields[0] );
	for ( i = 0, field = playerStateFields ; i < numFields ; i++, field++ ) {
		fromF = (int *)( (byte *)from + field->offset );
		toF = (int *)( (byte *)to + field->offset );

		if ( ! MSG_ReadBits( msg, 1 ) ) {
			// no change
			*toF = *fromF;
		} else {
			MSG_ReadField( msg, toF, field, print);
		}
	}

	// read the arrays

	// parse stats
	if ( MSG_ReadBits( msg, 1 ) ) {
		LOG("PS_STATS");
		bits = MSG_ReadShort (msg);
		for (i=0 ; i<MAX_STATS ; i++) {
			if (bits & (1<<i) ) {
				to->stats[i] = MSG_ReadBits(msg,32);
			}
		}
	}

	// parse persistant stats