kolibrios/programs/demos/life2/lif/SAWTOOT7.lif

#Life 1.05
#D Sawtooth with external timing
#D A p8 blinker puffer (found by Bob Wainwright) moves west.  A glider
#D bounces between a fixed reflector (in gens  480*2^n-701  (n>=1))
#D and a southeastward Cordership (in gens  720*2^n-661  (n>=1)).
#D Each bounce from the fixed reflector releases a salvo (formed in
#D gens  480*2^n-310  (n>=1)) consisting of a MWSS and 2 LWSSs aimed
#D toward the line of blinkers.  The salvo hits the nearest blinker
#D in gen  2400*2^n-880n-3115  (n>=1), causing the blinker line to
#D decay at 2c/3.  (Another salvo, present in the initial pattern,
#D hits in gen 5.)  When the decay catches up to the puffer, a new
#D line of blinkers starts to form (in gen 3840*2^n-880n-3760  (n>=0)).
#D 
#D When the salvo hits the blinker line, the population is large,
#D about  180*2^n  in gens around  2400*2^n.  (Specifically, in gen
#D 2400*2^n-880n-3115  there are  60*2^n-29  blinkers.)  When the
#D decay catches up with the puffer, the population is bounded, about
#D 1400 in gens around  3840*2^n-880n.
#D (This header was written by Dean Hickerson, 4/4/93)
#D David I. Bell, dbell@pdact.pd.necisa.oz.au, 27/10/92
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