4 from random import random
5 from MessageKeeper import MessageKeeper
10 def __init__(self, v):
19 class TrainIdler(Idler):
20 def __init__(self, v):
24 def put_shark(self, s, l):
27 elif self.s[l] == 'X':
33 # does the next stage of a dance
35 shark1 = self.idle_state % 18
37 self.put_shark('^', shark1)
39 self.put_shark('^', 18-shark1)
41 shark2 = ((self.idle_state+4) % 36)/2
43 self.put_shark('<', shark2)
45 self.put_shark('<', 18-shark2)
47 shark3 = ((self.idle_state+7) % 54)/3
49 self.put_shark('>', 9-shark3)
51 self.put_shark('>', 9-(18-shark3))
53 train1 = ((self.idle_state%(18*36)))
55 if train1 > train1_start and train1 < train1_start+(10*2):
57 ptr = i+train1-train1_start-5
58 if ptr >= 0 and ptr < 10: self.s[ptr] = '#'
60 train2 = ((self.idle_state%(18*36)))
62 if train2 > train2_start and train2 < train2_start+(10*2):
64 ptr = i+train2-train2_start-5
65 if ptr >= 0 and ptr < 10: self.s[9-ptr] = '#'
67 train3 = ((self.idle_state%(18*36)))
69 if train3 > train3_start and train3 < train3_start+(10*2):
71 ptr = i+train3-train3_start-10
72 if ptr >= 0 and ptr < 10: self.s[ptr] = '-'
74 self.v.display(string.join(self.s, ''))
76 self.idle_state %= 18*36*54
82 def __init__(self, n=8):
92 from copy import deepcopy
93 if len(self.s) == self.n:
94 self.a.append(deepcopy(self.s))
96 for x in range(0,self.n):
97 if self.u[x]: continue
107 class GrayIdler(Idler):
108 def __init__(self, v, one=None, zero=None, reorder=0):
110 self.size = 1 << self.bits
116 self.reorder = reorder
119 orderings = OrderMaker().order()
122 output = self.do_next_state()
123 # does the next stage of a dance
125 output = string.replace(output, "0", self.zero)
127 output = string.replace(output, "1", self.one)
132 newoutput += output[orderings[self.reorder][i]]
134 self.v.display(" %8.8s " % (output))
135 self.i = (self.i + 1) % self.size
137 def do_next_state(self):
138 self.grayCode = self.i ^ (self.i >> 1)
139 output = self.dec2bin(self.grayCode)
141 return "0"*(self.bits-len(output))+output
144 def dec2bin(self,num):
145 """Convert long/integer number to binary string.
147 E.g. dec2bin(12) ==> '1100'.
149 from http://starship.python.net/~gherman/playground/decbingray/decbingray.py"""
151 assert num >= 0, "Decimal number must be >= 0!"
153 # Gracefully handle degenerate case.
154 # (Not really needed, but anyway.)
158 # Find highest value bit.
161 val, j = val*2L, j+1L
182 self.reorder = int(random()*40319)+1
185 class StringIdler(Idler):
186 def __init__(self, v, text="Hello Cruel World!"):
188 self.mk = MessageKeeper(v)
192 self.mk.update_display()
195 self.mk.set_message(self.text, True, None)