Merge pull request carykh#54 from djlf4568/patch-2

Create rqftft.py

code/djlf4568/rqftft.py

@@ -0,0 +1,48 @@
+# Email: [email protected]
+# Revised version of qftft ("Quarter" Forgiving Tit For Tat)
+# Includes random strategy detection (sort of)
+# I'd be surprised if this actually works
+
+# "cooperate" = 1, "defect" = 0
+
+def strategy(history, memory):  
+  global cCount
+  global cRDCount
+  choice = None
+
+  if history.shape[1] == 0: # first turn
+    cCount = 0
+    cRDCount = 0
+    choice = "cooperate"
+  if history.shape[1] > 1 and history[0,-2] == 1:
+    cCount += 1
+    if history[1,-1] == 0 and history[0,-2] == 1:
+      cRDCount += 1
+
+  if history.shape[1] == 0:
+    pass
+  elif history.shape[1] == 1: # second turn
+    if history[1,-1] == 0: # if opp defect last turn
+      choice = "defect"
+    else:
+      choice = "cooperate"
+  elif cCount >= 10 and cRDCount / cCount > 0.3: # if detect random
+    choice = "defect"
+  elif history.shape[1] >= 4 and history[1,0] == 0 and history[1,1] == 0 and history[1,2] == 0 and history[1,3] == 0:
+    choice = "defect"
+  elif history.shape[1] >= 4 and history[1,0] == 1 and history[1,1] == 1 and history[1,2] == 1 and history[1,3] == 1:
+    choice = "cooperate"
+
+  else:
+    if history[0,-1] == 0: # if i defect last turn
+      choice = "cooperate"
+    else:
+      if history[1,-1] == 0: # if opp defect last turn
+        if history[0,-2] == 1: # if i cooperate two turns ago
+          choice = "defect"
+        else:
+          choice = "defect"
+      else:
+        choice = "cooperate"
+
+  return choice, None