1 files changed, 29 insertions, 0 deletions
diff --git a/oo.py b/oo.py
index c8a6444..d9a153e 100644
--- a/oo.py
+++ b/oo.py
@@ -876,6 +876,35 @@ class ooPlay:
                 elif self.xpos < self.max_xpos:
                     self.xpos += 1
 
+class ooStudy():
+    """Studies oo puzzles of a particular size.
+    
+    This class is not intended to be used. It is far too slow.
+    Instead, it is intended to be ported to a faster language.
+    """
+
+    def __init__(self, X, Y, toroidal=False):
+        self.X = X
+        self.Y = Y
+        self.toroidal = toroidal
+        self.puzzles = []
+
+    def __call__(self):
+        """Study each possible game id."""
+        X = self.X
+        Y = self.Y
+        if self.toroidal: upper_bound = 2**( 2*X*Y )
+        else:             upper_bound = 2**( (X-1)*Y + X*(Y-1) )
+        for game_id in range(upper_bound):
+            new_puzzle = ooPuzzle(X, Y,
+                    game_id=game_id, toroidal=self.toroidal)
+            for puzzle in self.puzzles:
+                if puzzle.pieces == new_puzzle.pieces:
+                    puzzle.equivalent_ids.append(game_id)
+                    return
+            new_puzzle.equivalent_ids = []
+            self.puzzles.append(new_puzzle)
+
 def main():
     curses.wrapper(ooPlay)