4 files changed, 80 insertions, 0 deletions
diff --git a/lib/scoring/README.md b/lib/scoring/README.md
new file mode 100644
index 0000000..efdc3cc
--- /dev/null
+++ b/lib/scoring/README.md
@@ -0,0 +1,15 @@
+Scoring interface
+=================
+
+Files in this directory should be _modules_ implementing the following
+interface:
+
+ - `stats_needed(Match) => Array[]=String`
+
+   Returns which statistics need to be collected for this scoring
+   algorithm.
+
+ - `score(Match) => Hash[User]=Integer`
+
+   User scores for this match, assuming statistics have been
+   collected.
diff --git a/lib/scoring/fibonacci_peer_with_blowout.rb b/lib/scoring/fibonacci_peer_with_blowout.rb
new file mode 100644
index 0000000..a13d76c
--- /dev/null
+++ b/lib/scoring/fibonacci_peer_with_blowout.rb
@@ -0,0 +1,33 @@
+module Scoring
+	module FibonacciPeerWithBlowout
+		def self.stats_needed(match)
+			return ["votes", "win", "blowout"] + match.users.map{|u|"review_from_#{u.user_name}"}
+		end
+
+		def self.score(match)
+			scores = {}
+			match.users.each do |user|
+				stats = user.statistics.where(match: match)
+				votes = 0
+				match.users.each do |u|
+					votes += convert_place_to_votes stats.where(name: "review_from_#{u.user_name}").first.value
+				end
+				win     = stats.where(name: "win"    ).first.value
+				blowout = stats.where(name: "blowout").first.value
+				scores[user] = self.score_user(votes, win, blowout)
+			end
+			scores
+		end
+
+		protected
+
+		def self.score_user(votes, win, blowout)
+			fibonacci = Hash.new { |h,k| h[k] = k < 2 ? k : h[k-1] + h[k-2] }
+			fibonacci[votes+3] + (win ? blowout ? 12 : 10 : blowout ? 5 : 7)
+		end
+
+		def self.convert_place_to_votes(place)
+			(place == 0 or place == 1) ? 1 : 0
+		end
+	end
+end
diff --git a/lib/scoring/marginal_peer.rb b/lib/scoring/marginal_peer.rb
new file mode 100644
index 0000000..f2c0272
--- /dev/null
+++ b/lib/scoring/marginal_peer.rb
@@ -0,0 +1,16 @@
+module Scoring
+	module MarginalPeer
+		def self.stats_needed(match)
+			return ["rating", "win"]
+		end
+
+		def self.score(match)
+			scores = {}
+			match.users.each do |user|
+				stats = Statistic.where(user: user, match: match)
+				scores[user] = stats.where(name: "rating").first.value
+			end
+			scores
+		end
+	end
+end
diff --git a/lib/scoring/winner_takes_all.rb b/lib/scoring/winner_takes_all.rb
new file mode 100644
index 0000000..6cffb28
--- /dev/null
+++ b/lib/scoring/winner_takes_all.rb
@@ -0,0 +1,16 @@
+module Scoring
+	module WinnerTakesAll
+		def self.stats_needed(match)
+			return ["win"]
+		end
+
+		def self.score(match)
+			scores = {}
+			match.users.each do |user|
+				stats = Statistic.where(user: user, match: match)
+				scores[user] = stats.where(name: "win").first.value ? 1 : 0
+			end
+			scores
+		end
+	end
+end