Make it work

metroidgen.py

 # This uses http://games.technoplaza.net/mpg/password.txt as a basis for its password algorithm
 
-import random
+import random, sys
 
 class MetroidState:
     def __init__(self):
         self.startLocation = 0
         self.bitfield = []
         self.initializeBitfield()
+        self.fullbitfield = []
 
     def initializeBitfield(self):
         self.bitfield = []
         sl = "Start Location: {}".format(self.locations[self.startLocation])
         dr = "Unlocked Doors: {}".format(self.openedDoors())
         ms = "Missiles: {}".format(self.missileCount)
-        bf = "Bitfield:\n{}".format(self.getBits())
-        return "\n".join([ic, mt, et, zb, kb, rs, sw, sl, dr, ms, bf])
+        pw = "Password: {}".format(self.password)
+        # bf = "Bitfield:\n{}".format(self.getBits())
+        return "\n".join([ic, mt, et, zb, kb, rs, sw, sl, dr, ms, pw])
 
     def randomize(self):
         # Items
         # checking = []
         # for i in range(16):
         #     checking.append(int("".join([str(x) for x in bitfield[i:i+8]]), 2))
-        decChecksum = sum(bitfield)
+        # print("Full Bitfield: {}".format("".join([str(x) for x in bitfield])))
+        self.fullbitfield = "".join([str(x) for x in bitfield])
+        newBitfield = []
+        for i in range(17):
+            j = i * 8
+            k = j + 8
+            word = self.fullbitfield[j:k][::-1]
+            newBitfield.append(word)
+        decChecksum = sum([int(x, 2) for x in newBitfield])
+        bitfield = "".join(newBitfield)
         binChecksum = bin(decChecksum).replace('0b','')
         checksum = binChecksum[-8:]
         while len(checksum) < 8:
-            checksum = checksum + "0"
-        print(checksum)
+            checksum = "0" + checksum
+        # print(checksum)
         for bit in checksum:
-            bitfield.append(int(bit))
-        print("Full Bitfield: {}".format("".join([str(x) for x in bitfield])))
-        print(len(bitfield))
+            bitfield += bit
+        # print("Real Bitfield: {}".format(bitfield))
+
         letters = []
         letter = []
         for bit in bitfield:
-            letter.append(str(bit))
+            letter.append(bit)
             if len(letter) == 6:
-                print(letter)
                 letters.append(self.alphabet[int("".join(letter),2)])
                 letter = []
-        print(letters)
         words = []
         word = []
-        print(letters)
-        print(len(letters))
         for lt in letters:
             word.append(lt)
             if len(word) == 6:
                 words.append("".join(word))
                 word = []
         words.append("".join(word))
-        return " ".join(words)
+        self.password = " ".join(words)
+        return self.password
+
+    def decodePassword(self, pwd):
+        densePwd = pwd.replace(" ","")
+        numPwd = []
+        for chr in densePwd:
+            numPwd.append(self.alphabet.index(chr))
+        bitPwd = [bin(x).replace("0b","") for x in numPwd]
+        longBitPwd = []
+        for word in bitPwd:
+            longword = word
+            while len(longword) < 6:
+                longword = "0" + longword
+            longBitPwd.append(longword)
+        # print(self.fullbitfield)
+        newBitfield = "".join(longBitPwd)
+        # print(newBitfield)
+        # print(newBitfield == self.fullbitfield)
+        # print(len(newBitfield[:136]))
+        # print(newBitfield[:136])
+        csm = sum([int(x) for x in newBitfield[:136]])
+        print(csm)
+        # print(bin(csm).replace("0b",""))
+        for i in range(len(newBitfield)):
+            print(newBitfield[i], end="")
+            if i%8 == 7:
+                print(" ", end="")
+            if i%64 == 63:
+                print()
 
 def main():
     gs = MetroidState()
     gs.randomize()
     gs.createBitfield()
+    pwd = gs.generatePassword()
     print(gs.toString())
-    print(gs.generatePassword())
+    # print(pwd)
+    # gs.decodePassword(pwd)
 
 if __name__ == "__main__":
-    main()
+    if len(sys.argv) == 2:
+        gs = MetroidState()
+        gs.decodePassword(sys.argv[1])
+    else:
+        main()