Opcodes List (SCM.INI)

Search…
Opcodes documentation can be found in Sanny Builder Library.
SCM.INI is the file containing information about opcodes used during disassembling and compiling script files. Sanny Builder ships a list of opcodes for each edit mode.
Game
File Name
Location
GTA III
SCM.INI
data\gta3
Vice City
VCSCM.INI
data\vc
San Andreas
SASCM.INI
data\sa
Liberty City Stories
LCSSCM.INI
data\lcs
Vice City Stories
VCSSCM.INI
data\vcs
VC Mobile
VCSCM.INI
data\vc_mobile
SA Mobile
SASCM.INI
data\sa_mobile
File Format
Lines starting with ; are ignored.
Metadata
Special INI parameters provide metadata information about the opcodes list.
VERSION – defines the version of this file. See the $VERSION directive
PUBLISHER – who authored this version 
DATE – the update date. 

The disassembler prints the metadata in the first line of the output file.
Opcode Definition
Each line has the following syntax:
xxxx=N, yyyy 
XXXX – the opcode number
N – the number of parameters
yyyy – the opcode description.
The opcode number and the number of parameters are final and can't be changed. The description is open to modifications.
If the INI file contains multiple definitions for the same opcode, the latter controls.
By convention a description for a conditional opcode starts with two spaces.
Opcode Parameters
A parameter is a dynamic part of the opcode. They start and end with % 
0001=1,wait %1d% ms
This line is the definition of the opcode 0001. When the disassembler finds 0001 in a script it prints the wordswait and ms with the parameter value in-between to the output file.
A parameter consists of two parts: a number and a type.
Parameters Order
The number in parameter %1d% is its index. The idea is that some opcodes have their parameters rearranged to make source code more readable.
0053=5,%5d% = create_player %1o% at %2d% %3d% %4d%
The disassembler writes the 5th opcode parameter before any others. 
0053: $PLAYER_CHAR = сreate_player #NULL at 2488.562 -1666.865 12.8757 
If the parameters will follow their original order, the opcode 0053 would look like:
0053: сreate_player #NULL at 2488.562 -1666.865 12.8757 $PLAYER_CHAR
Changing parameters order in the INI file should be avoided by any means as it makes the source code incompatible with the default opcode definitions or earlier scripts.
Parameters order may vary from mode to mode. See the comparison table in Edit modes to find out which mode uses which type.
Parameter Types
A letter following the index number indicates the parameter type.
d - any value
p - a label reference
o - any model id (including objects)
m - an .ide model id (no objects)
g - a key from the .gxt file
x - an external script ID
k - a fixed-size null-terminated string literal (128 bytes)
You can freely change parameters types, if needed.
Extensions
Next - SCM Documentation
GTA Limits
Last modified 1yr ago
Copy link
On this page
File Format
Metadata
Opcode Definition
Opcode Parameters