Ksp reference Manual

Advanced Concepts
196
KSP Reference Manual

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on release
{do something custom here}
end on 
20.2. PGS
It is possible to send and receive values from one script to another, discarding the usual left-to-
right order by using the Program Global Storage (PGS) commands. PGS is a dynamic memory
that can be read/written by any script. 
PGS commands
pgs_create_key(,)
pgs_key_exists()
pgs_set_key_val(,,)
pgs_get_key_val(,)

is similar to a variable name; it can only contain letters and numbers and must not start
with a number. It is a good idea to always write them in capitals to emphasize their unique status.
Here's an example, insert this script into any slot:
on init
pgs_create_key(FIRST_KEY, 1) {defines a key with 1 element}
pgs_create_key(NEXT_KEY, 128) {defines a key with 128 elements}
declare ui_button $Just_Do_It
end on
on ui_control($Just_Do_It)
{writes 70 into the first and only memory location of FIRST_KEY}
pgs_set_key_val(FIRST_KEY, 0, 70)
{writes 50 into the first and 60 into the last memory location of NEXT_KEY}
pgs_set_key_val(NEXT_KEY, 0, 50)
pgs_set_key_val(NEXT_KEY, 127, 60)
end on
and insert the following script into any other slot:
on init
declare ui_knob $First (0,100,1)
declare ui_table %Next[128] (5,2,100)
end on
on pgs_changed
{checks if FIRST_KEY and NEXT_KEY have been declared}
if(pgs_key_exists(FIRST_KEY) and _pgs_key_exists(NEXT_KEY))