Data Types
Certain code elements must start or end with specific characters. They help the compiler to recognize their meaning. The following list is final and contains all types of data known to the compiler.
A global variable starts with
$ followed by a valid identifier (any combination of letters, digits and _).0004: $MyVar = 100
A local variable name may only be a number followed by
@. The number is the local variable index in the list of local variables allocated to this script or a mission.0006: 100@ = 10
An
ADMA (Advanced Direct Memory Access) variable is a reference to an address within in the main.scm file. They serve as global variables, i.e. you can read from and write to the address in the main.scm. $myVar = &0 // read first 4 bytes of the main.scm (&0) and write the value to $myVar
&57 += &120(&231,4i) // can be used as an array element
ADMA variables don't affect the size of the global variables space in the main.scm header.Labels are used to reference the code location from unconditional (opcodes
0002, 0050) or conditional jumps (opcode 004D). They start with :followed by a valid identifier (a label name).:MyLabel
To reference the label from an opcode use
@ and then write the label name.0002: jump @MyLabel
If a label name is written as a standalone statement followed by
() it represents a call to the subroutine with the gosub command:// the following statements are equivalent
MyLabel()
gosub @MyLabel
A text enclosed between single quotes
' ' is a short string literal (15 characters max).03A4: script_name 'MAIN'
Blank strings are also allowed:
' '.A text enclosed between
" " is a long string literal (maximum length is determined by the opcode it uses)If the literal contains
" you must write \ before it.0662: write_debug_message "Hello, \"world\"! \n 'Here we go!'"
Blank strings are also allowed:
" ".A global variable containing a short string literal starts with
s$.05A9: s$MyString = 'GLOBAL'
A local variable containing a short string literal starts with
@s. 05AA: 1@s = 'LOCAL'
A global variable containing a long string literal starts with
v$. 06D1: v$MyString = "LONG_GLOBAL"
A local variable containing a long string literal starts with
@v. 06D2: 1@v = "LONG_LOCAL"
Models defined in
.ide files can be referenced by# followed by the model name. 0247: request_model #CELLPHONE
0x - a hexadecimal number
-0x - a negative hexadecimal number0004: $var = -0xBB08
A hexadecimal number has to be within the
-80000000..7FFFFFFF range.Last modified 24d ago