Library used to execute functions or script send from server. Available with npc v1.6 beta onwards.
ServerData Identifier
LibRPC when loaded works on server data whose first four bytes is the following:
| Offset
|
Type
|
Value
|
| 0
|
Integer
|
0x40000000
|
ServerData structure
| Offset
|
Type
|
Value
|
|
| 4
|
Character
|
'F' or 'G'
|
Function
|
Function structure
'F' type function
F type functions are those functions to be called through a name, ( unlike to be called through other methods see 'G' type functions ). The function name is encoded from offset 7.
| Offset^
|
Type
|
Value
|
| 0
|
Character
|
'F'
|
| 1-4
|
Unsigned Integer
|
size of the function buffer
|
| 5-6
|
unsigned short
|
length of the function name
|
| 7 - 7+len(funcname)-1
|
characters
|
Function Name
|
| 7+len - ...
|
...
|
...
|
^Offset relative to this buffer and not relative to ServerData ( complete buffer. )
'G' type function
G type functions (The name G because character F already taken ). They are functions returned by another function. So the buffer of the G type function contain another function which is first called and its return value, if it is a function, is then called. They can be said to be second order functions.
| Offset^
|
Type
|
Value
|
| 0
|
Character
|
'G'
|
| 1-4
|
Unsigned Integer
|
size of the buffer
|
| 5
|
Character
|
'G' or 'F'
|
| ...
|
...
|
...
|
^Offset relative to 'G' function buffer and not relative to complete buffer of ServerData.
Functions of higher order can be called through this method.
Example
| Offset
|
Value
|
Explanation
|
| 0-3
|
00 00 00 40
|
0x40000000
|
| 4
|
46
|
F
|
| 5-8
|
00 00 00 0f
|
len of func buffer
|
| 9-10
|
00 05
|
len of func name (11-15)
|
| 11-15
|
70 72 69 6e 74
|
p r i n t
|
| 16
|
73
|
s (for string)
|
| 17
|
00 05
|
len of string (19-23)
|
| 19-23
|
48 65 6c 6c 6f
|
H e l l o
|
Other structures
String
| Offset^
|
Type
|
Value
|
| 0
|
char
|
's'
|
| 1-2
|
unsigned short
|
len of string
|
| 3 - 3+len of string-1
|
char sequence
|
the string
|
Integers
| Offset^
|
Type
|
Value
|
| 0
|
char
|
'i'
|
| 1-4
|
int
|
integer
|
Float
| Offset^
|
Type
|
Value
|
| 0
|
char
|
'f'
|
| 1-4
|
float
|
floating point number
|
null
| Offset^
|
Type
|
Value
|
| 0
|
char
|
'o'
|
bool
| Offset^
|
Type
|
Value
|
| 0
|
char
|
'b'
|
| 1
|
unsigned char
|
0 or 1
|
Vector
| Offset^
|
Type
|
Value
|
| 0
|
char
|
'v'
|
| 1-4
|
float
|
Vector.x
|
| 5-8
|
float
|
Vector.y
|
| 9-12
|
float
|
Vector.z
|
Quaternion
| Offset^
|
Type
|
Value
|
| 0
|
char
|
'q'
|
| 1-4
|
float
|
Quaternion.x
|
| 5-8
|
float
|
Quaternion.y
|
| 9-12
|
float
|
Quaternion.z
|
| 13-16
|
float
|
Quaternion.w
|
Arrayss
| Offset^
|
Type
|
Value
|
| 0
|
char
|
'a'
|
| 1-4
|
unsigned int
|
length of the array stream
|
| 5
|
char
|
...
|