lastcycle — Indicates whether an event is in its last performance cycle.
Provides a way of knowing if an event is in its last performance cycle. Whether an event has a finite duration (p3 > 0) or a note is extended via a time extending opcode (like “linsegr” or “xtratim”), this opcode returns 1 if the event is currently at its last k-cycle. The only sitatuation where “lastcycle” does not detect that the event will not run for another cycle is when the note is turned off by another event (using “turnoff2”) and is not given the possibility of running through its release stage (using “turnoff2 instrnum, imode, 0”)
kflag -- indicates whether the note is in its “last cycle”. (1 if this the last cycle, otherwise 0)
This opcode is useful for performing cleanup actions, signaling to other events that this event is finishing, etc. It works only at performance time.
Here is an example of the lastcycle opcode. It uses the file lastcycle.csd.
Example 497. Example of the lastcycle opcode.
<CsoundSynthesizer> <CsOptions> ; Select audio/midi flags here according to platform ; Audio out Audio in Silent MIDI in -odac -d </CsOptions> <CsInstruments> sr = 44100 ksmps = 64 nchnls = 2 0dbfs = 1 instr 1 aenv linsegr 0, 0.1, 1, 0.1, 0 asig = oscili(0.1, 1000) asig += oscili(0.1, 1012) asig *= aenv if lastcycle() == 1 then schedulek p1, 0, p3 endif outs asig, asig endin </CsInstruments> <CsScore> i 1 0 0.5 f 0 3600 </CsScore> </CsoundSynthesizer>