Ksp reference Manual

Engine Parameter Variables
194
KSP Reference Manual

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20. ADVANCED CONCEPTS
20.1. Preprocessor & System Scripts
SET_CONDITION()
Define a symbol to be used as a condition
RESET_CONDITION()
Delete a definition
USE_CODE_IF()
...
END_USE_CODE
Interpret code when 

is defined
USE_CODE_IF_NOT()
...
END_USE_CODE
Interpret code when 

is not defined
NO_SYS_SCRIPT_GROUP_START
Condition; if defined with 
SET_CONDITION()
, the system script which handles all group start options 
NO_SYS_SCRIPT_PEDAL
Condition; if defined with 
SET_CONDITION()
, the system script which sustains notes when CC# 64 is received will be by-
passed
NO_SYS_SCRIPT_RLS_TRIG
Condition; if defined with 
SET_CONDITION()
, the system script which triggers samples upon the release of a key is by-
passed
reset_rls_trig_counter()
Resets the release trigger counter (used by the release trigger system script)
will_never_terminate
()
Tells the script engine that this event will never be finished (used by the release trigger system script)
Examples
A preprocessor is used to exclude code elements from interpretation. Here's how it works:
USE_CODE_IF()
...
END_USE_CODE
or