luisguzman02 · March 28, 2014 22:50 · Sep 19, 2013 · Feb 9, 2012 · Feb 9, 2012 · Feb 9, 2012
diff --git a/experimentation.rb b/experimentation.rb
@@ -1,5 +1,5 @@
 # Small rewrite of the original code to support independent x and y values.
-# Doesn't fit in 140 chars anymore thought.
+# Doesn't fit in 140 chars anymore, though.
 #
 life = lambda do |grid, x, y|
   (0..x*y-1).map do |i|

diff --git a/conway.rb b/conway.rb
@@ -1 +1 @@
-life=->g,s{(0..s*s-1).map{|i|->n{n==3||(g[i]&&n==2)||nil}[[g[i-s-1],g[i-s],g[i-s+1],g[i-1],g[i+1],g[i+s-1],g[i+s],g[i+s+1]].compact.count]}}
+life=->g,s{(0..s*s-1).map{|i|->n{n==3||(g[i]&&n==2)||nil}[[g[i-s-1],g[i-s],g[i-s+1],g[i-1],g[i+1],g[i+s-1],g[i+s],g[i+s+1]].compact.count]}}
diff --git a/demonstration.rb b/demonstration.rb
@@ -1,3 +1,5 @@
+# The code with some animation logic for demonstration.
+#
 life=->g,s{(0..s*s-1).map{|i|->n{n==3||(g[i]&&n==2)||nil}[[g[i-s-1],g[i-s],g[i-s+1],g[i-1],g[i+1],g[i+s-1],g[i+s],g[i+s+1]].compact.count]}}
 
 size = 20
@@ -13,4 +15,4 @@
     puts
   end
   sleep 0.1
-end
+end
diff --git a/expanded.rb b/expanded.rb
@@ -1,3 +1,5 @@
+# Expanded version for better readability.
+#
 life = lambda do |grid, size|
   (0..size*size-1).map do |i|
     lambda do |neighbours|

diff --git a/experimentation.rb b/experimentation.rb
@@ -0,0 +1,32 @@
+# Small rewrite of the original code to support independent x and y values.
+# Doesn't fit in 140 chars anymore thought.
+#
+life = lambda do |grid, x, y|
+  (0..x*y-1).map do |i|
+    lambda do |neighbours|
+      neighbours == 3 || ( grid[i] && neighbours == 2 )|| nil
+    end.call (
+      [
+        grid[i-x-1], grid[i-x], grid[i-x+1],
+        grid[i-1],              grid[i+1],
+        grid[i+x-1], grid[i+x], grid[i+x+1]
+      ].compact.count
+    )
+  end
+end
+
+x = 80
+y = 20
+grid = (1..x*y).map { rand(0..1)==1 ? 1 : nil }
+
+while true do
+  system 'clear'
+  grid = life[grid, x, y]
+  (0..y-1).each do |yi|
+    (0..x-1).each do |xi|
+      print "#{(grid[xi+(yi*x)] ? 'O' : '.')}"
+    end
+    puts
+  end
+  sleep 0.1
+end
diff --git a/expanded.rb b/expanded.rb
@@ -0,0 +1,13 @@
+life = lambda do |grid, size|
+  (0..size*size-1).map do |i|
+    lambda do |neighbours|
+      neighbours == 3 || ( grid[i] && neighbours == 2 )|| nil
+    end.call (
+      [
+        grid[i-size-1], grid[i-size], grid[i-size+1],
+        grid[i-1],                    grid[i+1],
+        grid[i+size-1], grid[i+size], grid[i+size+1]
+      ].compact.count
+    )
+  end
+end
diff --git a/README.md b/README.md
@@ -8,4 +8,4 @@ Author
 
 Created by Simon Ernst ([@sier](http://twitter.com/sier)).
 
-(Thanks to ([@aemkei](http://twitter.com/aemkei)) for feedback and inspiration!)
+Thanks to [@aemkei](http://twitter.com/aemkei) for feedback and inspiration!
diff --git a/README.md b/README.md
@@ -7,4 +7,5 @@ Author
 ------
 
 Created by Simon Ernst ([@sier](http://twitter.com/sier)).
+
 (Thanks to ([@aemkei](http://twitter.com/aemkei)) for feedback and inspiration!)
diff --git a/README.md b/README.md
@@ -0,0 +1,10 @@
+Game of Life
+============
+
+An implementation of Conway's [Game of Life](http://en.wikipedia.org/wiki/Conway's_Game_of_Life) in 140 characters of Ruby.
+
+Author
+------
+
+Created by Simon Ernst ([@sier](http://twitter.com/sier)).
+(Thanks to ([@aemkei](http://twitter.com/aemkei)) for feedback and inspiration!)
diff --git a/conway.rb b/conway.rb
@@ -0,0 +1 @@
+life=->g,s{(0..s*s-1).map{|i|->n{n==3||(g[i]&&n==2)||nil}[[g[i-s-1],g[i-s],g[i-s+1],g[i-1],g[i+1],g[i+s-1],g[i+s],g[i+s+1]].compact.count]}}
diff --git a/demonstration.rb b/demonstration.rb
@@ -0,0 +1,16 @@
+life=->g,s{(0..s*s-1).map{|i|->n{n==3||(g[i]&&n==2)||nil}[[g[i-s-1],g[i-s],g[i-s+1],g[i-1],g[i+1],g[i+s-1],g[i+s],g[i+s+1]].compact.count]}}
+
+size = 20
+grid = (1..size*size).map { rand(0..1)==1 ? 1 : nil }
+
+while true do
+  system 'clear'
+  grid = life[grid, size]
+  (0..size-1).each do |y|
+    (0..size-1).each do |x|
+      print "#{(grid[x+(y*size)] ? 'O' : '.')}"
+    end
+    puts
+  end
+  sleep 0.1
+end
Original file line number	Diff line number	Diff line change
		@@ -1 +1 @@
		life=->g,s{(0..s*s-1).map{\|i\|->n{n==3\|\|(g[i]&&n==2)\|\|nil}[[g[i-s-1],g[i-s],g[i-s+1],g[i-1],g[i+1],g[i+s-1],g[i+s],g[i+s+1]].compact.count]}}
		life=->g,s{(0..s*s-1).map{\|i\|->n{n==3\|\|(g[i]&&n==2)\|\|nil}[[g[i-s-1],g[i-s],g[i-s+1],g[i-1],g[i+1],g[i+s-1],g[i+s],g[i+s+1]].compact.count]}}
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
		life=->g,s{(0..s*s-1).map{\|i\|->n{n==3\|\|(g[i]&&n==2)\|\|nil}[[g[i-s-1],g[i-s],g[i-s+1],g[i-1],g[i+1],g[i+s-1],g[i+s],g[i+s+1]].compact.count]}}