Randomise gray code.
authorBernard Blackham <dagobah@ucc.gu.uwa.edu.au>
Mon, 2 Aug 2004 10:19:38 +0000 (10:19 +0000)
committerBernard Blackham <dagobah@ucc.gu.uwa.edu.au>
Mon, 2 Aug 2004 10:19:38 +0000 (10:19 +0000)
sql-edition/servers/Idler.py
sql-edition/servers/VendServer.py

index 4efb56f..555630f 100755 (executable)
@@ -1,6 +1,9 @@
 #!/usr/bin/env python
 
 import string
+from random import random
+
+orderings = None
 
 class Idler:
        def __init__(self, v):
@@ -74,8 +77,34 @@ class TrainIdler(Idler):
        def reset(self):
                self.idle_state = 0
 
+class OrderMaker:
+       def __init__(self, n=8):
+               self.n = n
+               self.a = []
+               self.u = []
+               self.s = []
+               for x in range(0,n):
+                       self.u.append(False)
+               self.go()
+
+       def go(self):
+               from copy import deepcopy
+               if len(self.s) == self.n:
+                       self.a.append(deepcopy(self.s))
+               else:
+                       for x in range(0,self.n):
+                               if self.u[x]: continue
+                               self.s.append(x)
+                               self.u[x] = True
+                               self.go()
+                               self.u[x] = False
+                               self.s.pop()
+
+       def order(self):
+               return self.a
+
 class GrayIdler(Idler):
-       def __init__(self, v, one=None, zero=None):
+       def __init__(self, v, one=None, zero=None, reorder=0):
                self.bits = 8
                self.size = 1 << self.bits
                self.i = 0
@@ -83,6 +112,10 @@ class GrayIdler(Idler):
                self.v = v
                self.one = one
                self.zero = zero
+               self.reorder = reorder
+               global orderings
+               if not orderings:
+                       orderings = OrderMaker().order()
 
        def next(self):
                output = self.do_next_state()
@@ -91,6 +124,12 @@ class GrayIdler(Idler):
                        output = string.replace(output, "0", self.zero)
                if self.one:
                        output = string.replace(output, "1", self.one)
+               if self.reorder:
+                       global orderings
+                       newoutput = ""
+                       for i in range(0,8):
+                               newoutput += output[orderings[self.reorder][i]]
+                       output = newoutput
                self.v.display(" %8.8s " % (output))
                self.i = (self.i + 1) % self.size
 
@@ -138,3 +177,5 @@ class GrayIdler(Idler):
        def reset(self):
                self.i = 0
                self.grayCode = 0
+               if self.reorder:
+                       self.reorder = int(random()*40320)
index bed5366..992a65d 100755 (executable)
@@ -219,6 +219,9 @@ def setup_idlers(v):
                GrayIdler(v,one="*",zero="-"),
                GrayIdler(v,one="/",zero="\\"),
                GrayIdler(v,one="X",zero="O"),
+               GrayIdler(v,one="*",zero="-",reorder=1),
+               GrayIdler(v,one="/",zero="\\",reorder=1),
+               GrayIdler(v,one="X",zero="O",reorder=1),
                ]
        idler = choose_idler()
 
@@ -275,10 +278,13 @@ def run_forever(rfh, wfh, options, cf):
                        time_to_autologout = time() + 15
 
                if time_to_idle == None and cur_user == '':
-                       time_to_idle = time() + 2
+                       time_to_idle = time() + 30
                        choose_idler()
                if time_to_idle != None and cur_user != '': time_to_idle = None
                if time_to_idle is not None and time() > time_to_idle: idle_step()
+               if time() > time_to_idle + 300:
+                       time_to_idle = time()
+                       choose_idler()
 
                mk.update_display()
 

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