#pragma pack (1)
Struct C //
structure
C
Type and structure
A
Type
{
A a a;
B B;
}
#pragma pack (1)
Struct D //
structure
C
Type and structure
A
Type
{
B b;
A Al
}
Use a bitstream to create a packet
We still use the above example, but this time we decided to rewrite him with a specific stream. We have the same data as before.
Unsigned char useterstamp; //
Assign this
ID_TimeStamp
Unsigned long timestamp; //
Put by
GetTime ()
Returned system time is here
Unsigned char typeid; //
Here, a data type will be added to
Packetenumerates.h
In the file, here we set up
ID_SET_TIMED_MINE
Usetimestamp = id_timestamp;
Timestamp = getTime ();
TYPEID = ID_SET_TIMED_MINE;
BitStream mybitstream;
MyBitStream.write (UsetimeStamp);
MyBitStream.write (TimeStamp);
MyBitStream.write (TypeID);
//
Suppose we have a definition
Mine *
of
Mine
Object
Mybitstream.write (Mine-> getPosition (). x);
Mybitstream.write (Mine-> getPosition (). Y);
MyBitStream.write (Mine-> getPosition (). z);
Mybitstream.write (Mine-> getId ()); //
In this structure, this is
ObjectID
Object
Id
Mybitstream.write (mine-> getowner ()); //
In this structure, this is
Playerid,
Player
Id
If we use it now
RakClient :: Send
or
Rakserver :: Send
To send our bitstream will lead to the chaos of the structure. Let us try to do some improvements. Now, suppose our players' coordinates for some reason,
0
,
0
,
0
. Then the previous code will modify the following form:
Unsigned char useterstamp; //
Assign this to
ID_TimeStamp
Unsigned long timestamp; //
Store
GetTime ()
Returned system time
Unsigned char typeid; //
Assign a type to
Packetenumerates.h
In the middle, we set it here.
ID_SET_TIMED_MINE
Usetimestamp = id_timestamp;
Timestamp = getTime ();
TYPEID = ID_SET_TIMED_MINE;
BitStream mybitstream;
MyBitStream.write (UsetimeStamp);
MyBitStream.write (TimeStamp);
MyBitStream.write (TypeID);
IF (mine-> getPosition (). X == 0.0f && mine-> getPOStion (). Y == 0.0f && mine-> getPosition (). Z == 0.0f) {
MyBitStream.write (TRUE);
}
Else
{
MyBitStream.write (false);
Mybitstream.write (Mine-> getPosition (). x);
Mybitstream.write (Mine-> getPosition (). Y);
MyBitStream.write (Mine-> getPOSISTON (). z);
}
Mybitstream.write (Mine-> getId ()); //
In this structure, this is an object
Mybitstream.write (mine-> getowner ()); //
In this structure, this is a player
Written
Overload
BitStream
You can write a word stream with an array. One method is to write data length, then write data, the content is as follows:
Void WriteStringTroitStream (Char * MyString, BitStream * Output)
{
Output-> Write (UNSIGNED SHORT) Strlen (MyString);
Output-> Write (MyString, Strlen (MyString);
}
Their coding is the same, no matter what, it is not very efficient.
Raknet
There is a character compression class
Stringcompressor
Compression of the string can be performed. If we want to use this class to encode data, we can write the following form:
Void WriteStringTroitStream (Char * MyString, BitStream * Output)
{
Stringcompressor-> Encodestring (MyString, 256, Output);
}
You can extract the compressed string by the following form.
Void WriteBitStreamTRING (Char * MyString, BitStream * Input)
{
Stringcompressor-> Decodestring (mystring, 256, input);
}
it's here,
256
Represents the maximum number of bytes. During the encoding process, if your strings are less
256
This is written, then the entire string will be written. Conversely, if your string is greater than
256
One byte, then truncation it, then
256
The array of bytes is encoded, of course, including the terminator
NULL
.
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http://popul.jqcq.com
The game development section, if you need a book development, please refer to Jinqiao Book City Game Channel (
http://book.jqcq.com/category/1_70_740.html
).
If you have any good suggestions when you read this article, please let me, mine.
E_mail: akinggw@126.com.
If you are using
SDL
What is wrong with it, please go to Jinqiao Scot,
http://popul.jqcq.com
) The game development section, I will answer your questions in detail.
