Sokwe wrote:Using Dave's numbering:
261, 262, and 275:...
(Incomplete) 255 from 233:...
Okay, here's my almost-final update for the index pattern. Looks like 43 objects have been removed so far --
EDIT 10am: not 29, I added wrong... I'll post an improved version in a day or so with any corrections that get sent in, but after that I'll be leaving it for someone else to take over if they want to:
17-bit still life index pattern, last edited 1/6/2014 10am:
Code: Select all
x = 187, y = 337, rule = LifeHistory
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Here are the notes I made while I was removing those 43 objects, showing who found which object when, and what the index numbers were. If everyone includes the "#" before the index number in posts, by the way, it may make it easier to do text searches for particular objects, when the inevitable confusions come up.
Code: Select all
1/3 9:07pm Extrementhusiast:
#104, #105, technique for #106 *** left #106 in index pattern for now ***
1/3 9:43pm Extrementhusiast:
#267, pond analog of #315 but that doesn't solve it.
EDIT 5th: #221
EDIT 2: not in list -- 3b2o$3bo$o4bo$6o2$2obo$ob2o!
seventh: not in list -- o2b2o$4o2bo$5b2o$2b3o$bo2bo$2b2o!
eighth: #145
1/4 3:16 am Sokwe:
six obvious ones: #199, #206, #258, #388 flipped and rotated, #185, #135
two found a while ago: 4b2o$4b2o2$2b4o$bo3bo$2b3o$obo$2o! not in list (similar to #214), #234
#147, #200, and #290, all flipped and rotated, can be fished out of old soup (Lewis' soup results)
1/4 4:00am Sokwe:
four more based on previous syntheses: #287 and #332 rotated, #327 flipped and rotated, #184 flipped
1/4 2:27pm: Extrementhusiast:
#179
1/4 5:51 pm Sokwe:
Group 2: ob2ob2o$2obobobo$5bobo$4bobo$4bo$3b2o! not found in list, #208, #224, #226, #225
Group 3: #323, #305, #313
possible starting points:
#119 *** left in index pattern, don't know if 4bo$2obobob2obo$ob2obobob2o$5bo$5b2o! is constructible yet ***
#285 flipped -- constructible from #238, so removed
1/4 10:41pm Extrementhusiast:
#128 and #129
*** also a 16-bit G2 predecessor that I don't understand, b2o$obo$o2b2o$b2o2bo$2bob2o$2bo$b2o! (similar to #273? ***
EDIT: #204
1/5 5:42am Sokwe:
G1 #177, G2 #220 and G3 #335
1/5 2:27pm Extrementhusiast:
#118
EDIT: #111
EDIT 2: griddle with cross snake, #221
EDIT 3: #178
EDIT 4: 18-bit version of #284 I think, #346, #369
EDIT 5: 18-bit variant of #349 *** left these in index pattern for now ***
EDIT 6: #277
1/6 12:39am Sokwe:
#261, #262, #275, incomplete #255
Speaking of inevitable confusions, there were quite a few posted syntheses for 17-bit objects that weren't in the list. Maybe everybody could check the "not in list" and ***asterisk*** marked items that belong to them in the above notes? I'm betting some of them are due to misunderstanding on my part -- a final trivial transformation or something like that, except that I'm too much of a glider-construction newbie to know it's trivial. I was especially unsure about #284 and #349.
I suggested someone should post the index to a new thread and keep an up-to-date copy in the first post. The details don't matter to me, of course -- just that if it's set up that way, the first post should be done by someone who will be paying close attention anyway from here on out, as far as which objects have been knocked off the list.
Which is to say, not me! This has been an interesting side trip into a part of the Life universe that I'm still not very familiar with. But I think I'm going to go back and hide in my own familiar self-constructing circuitry corner now.
Here's a silly little Python script I wrote to look for the first instance of a given selected object in a larger pattern:
find-object.py:
Code: Select all
# Search for another copy of the object in the current selection.
# If one is found, move the selection to the new location.
# If the selected orientation is not found, try other orientations.
# TODO: update to find other phases (borrow code from glider-rewinder.py?)
# TODO: include test for empty space inside bounding box (or bounding box plus one-cell boundary)
# -- current code will match any pattern with an all-ON block!
import golly as g
r=g.getselrect()
if len(r)==0: g.exit("No selection. Need a selected object to search with.")
searchobj=g.getcells(r)
objlist = [searchobj,g.transform(searchobj,0,0,0,1,-1,0),
g.transform(searchobj,0,0,-1,0,0,-1),g.transform(searchobj,0,0,0,-1,1,0),
g.transform(searchobj,0,0,0,1,1,0),g.transform(searchobj,0,0,1,0,0,-1),
g.transform(searchobj,0,0,0,-1,-1,0),g.transform(searchobj,0,0,-1,0,0,1)]
normlist = []
for obj in objlist:
sorted=g.evolve(obj,0)
normlist+=[g.transform(sorted, -sorted[0], -sorted[1])]
# offset=1000
# for obj in normlist:
# g.putcells(obj, offset, 0)
# offset+=100
g.putcells(searchobj,0,0,1,0,0,1,"xor")
all=g.getcells(g.getrect())
g.putcells(searchobj,0,0,1,0,0,1,"xor")
allcells=[]
step=len(all)%2+2
for i in range(0,len(all)-1,step):
allcells+=[all[i:i+step]] # simplified version of two-state/multistate test
count=0
for obj in normlist:
g.show("Object orientation "+str(count))
count+=1
for cell in allcells: # go through each cell in the pattern, check if there's a perfect match
offsetobj=[]
# separate search for two-state and multistate rules
if len(obj)%2:
# list has odd parity -- must be a multistate list, so break into groups of three
for i in range(0,len(obj)-1,3):
offsetobj+=[[obj[i]+cell[0],obj[i+1]+cell[1],obj[2]]]
else:
# list has even parity -- must be a two-state list, so break into groups of two
for i in range(0,len(obj),2):
offsetobj+=[[obj[i]+cell[0],obj[i+1]+cell[1]]]
match=1
for c in offsetobj:
if c not in allcells:
match=0
break
if match==1:
# found a brain-dead match anyway...
xmin,xmax,ymin,ymax=999999,-999999,999999,-999999
for c in offsetobj:
if c[0]<xmin: xmin=c[0]
if c[0]>xmax: xmax=c[0]
if c[1]<ymin: ymin=c[1]
if c[1]>ymax: ymax=c[1]
rect = [xmin,ymin,xmax-xmin+1,ymax-ymin+1]
g.select(rect)
g.fitsel()
g.exit("Found something.")
This is completely unoptimized and very slow, especially when the original orientation isn't present and the script has to check all seven other possibilities. It will also happily find
anything at all in a large solid block of ON cells... I have other code lying around somewhere that does a better job of subdividing a pattern into cell groups and recognizing each group separately -- much faster and harder to fool, but also more complicated and subtly dependent on the rule.
[For example, if two subpatterns are separated by one cell diagonally, are they separate patterns? How about one cell horizontally? Are two tubs separate, but two blocks are really one biblock? These are all solvable problems, and have been solved many times in various ways... but that was a bit beyond the scope of half an hour's worth of helper script.]
Anyway, this code worked for my particular purpose, which was mostly just confirming that when I couldn't find some object in the list, that it really wasn't there -- I spent an embarrassing amount of time looking through the index pattern, before giving up and writing the find-object script. No warranty express or implied, etc., etc.