Hottest 6/Hottest 6 (1996)(PDSoft)[!].iso/pdsoft/demo_library/4401.lha/AXlife/Patterns/breeder4.life

Text File | 1993-09-21 | 14.0 KB | 1,618 lines

#N Pufferless breeder (Standing breeder)
#O Dean Hickerson, [e-mail]  10/12/92
#C A shotgun sends an 8 spaceship salvo eastward every
#C 360 gens.  Call the spaceships, from top to bottom, A,
#C B, C, D, D', C', B', and A'.  D and D' are MWSSs; the
#C others are HWSSs.  (The shotgun's output is
#C approximately glide symmetric.)  Every 360 gens, two
#C guns and a kickback reaction are used to create a
#C northeastward glider in front of A and B.  A and B
#C redirect the glider southeastward.  Then C' and D'
#C duplicate it, producing 2 SEward gliders and a block.
#C The second glider escapes, the block is deleted by D,
#C and the first glider is turned NEward by A' and B'.
#C It is duplicated by C and D, again producing an
#C escaping glider, a block that gets deleted by the next
#C D', and another NEward glider.  The latter interacts
#C with the next A and B in the same way as the original
#C glider did, 596 gens later and 118 units farther east.
#C
#C Thus, in gen t, there are approximately  t/360
#C gliders zigzagging east, each producing 2 more gliders
#C every 596 gens.  So the population is growing by about
#C 5 * 2/596 * t/360  =  t/21456  cells per generation,
#C and the total population is about  t^2/42912. The
#C gliders occupy a nonconvex quadrilateral with vertices
#C at (approximately)  (0,0),  (t/4,t/4),  (59t/298,0),
#C and  (t/4,-t/4).
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