Ksp reference Manual

See Also
on ui_control()
Callbacks
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KSP Reference Manual

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3. VARIABLES
3.1. General Information
• All user defined variables must be declared in the 
on init
callback.
• Variable names may contain only numbers, characters and the underscore ( _ ).
• Variable names are case-sensitive.
• Please do not create variables with the prefixes below, as these prefixes are used for internal
variables and constants.
$NI_
$CONTROL_PAR_
$EVENT_PAR_
$ENGINE_PAR_
3.2. $ (int variable)
declare $
Declare a user-defined variable to store a single integer value
Examples
on init
declare $test
$test := -1
end on
Creating a variable
on init
declare $test := -1
end on
Creating a variable, the same as above but shorter
See Also
on init
make_persistent()
read_persistent_var()
int_to_real()
real_to_int()
Variables
13
KSP Reference Manual

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3.3. % (int array)
declare %[]
Declare a user-defined array to store single integer values at specific indices
Remarks
• The maximal size of arrays is 1000000.
• The number of elements must be defined with a constant value, a standard variable cannot be
used.
• It is possible to initialize an array with one value, see the second example below.
Examples
on init
declare %presets[10*8] := (...
{1} 8,8,8,0, 0,0,0,0,...
{2} 8,8,8,8, 0,0,0,0,...
{3} 8,8,8,8, 8,8,8,8,...
{4} 0,0,5,3, 2,0,0,0,...
{5} 0,0,4,4, 3,2,0,0,...
{6} 0,0,8,7, 4,0,0,0,...
{7} 0,0,4,5, 4,4,2,2,...
{8} 0,0,5,4, 0,3,0,0,...
{9} 0,0,4,6, 7,5,3,0,...
{10} 0,0,5,6, 4,4,3,2)
end on
Creating an array for storing preset data
on init
declare %presets[10*8] := (4)
end on
Quick way of initializing the same array with the value 4
See Also
Array and Group Commands
make_persistent()