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1 #!/usr/bin/env python
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2 # Copyright (C) 2000-2010 The OpenRPG Project
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3 #
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4 # owner@madmathlabs.com
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5 #
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6 # This program is free software; you can redistribute it and/or modify
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7 # it under the terms of the GNU General Public License as published by
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8 # the Free Software Foundation; either version 2 of the License, or
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9 # (at your option) any later version.
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10 #
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11 # This program is distributed in the hope that it will be useful,
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12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 # GNU General Public License for more details.
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15 #
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16 # You should have received a copy of the GNU General Public License
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17 # along with this program; if not, write to the Free Software
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18 # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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19 # --
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20 #
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21 # File: dieroller/utils.py
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22 # Author: OpenRPG Team
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23 # Maintainer (Traipse): Tyler Starke
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24 # Version:
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25 # $Id: utils.py,v Traipse 'Ornery-Orc' prof.ebral Exp $
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26 #
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27 # Description: Classes to help manage the die roller
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28 #
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29
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30 import re
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31
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32 import orpg.dieroller.rollers
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33 from orpg.dieroller.base import die_rollers
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34
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35 """
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36 Die Roller Changes:
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37 I've made some changes for ease of reading. Below you see the new formula and the old depricated formula. The new formula is easier to understand
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38 and works a little better with math. Try this: [(2+4)+4d(6+8)+(4*4)] with both formulas. Traipse succeeds, Standard (1.7.1) fails.
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39
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40 The new formula deals only with numbers of the Fudge roller. The math has a required process flow, which is unliked currently by me but I am not
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41 going to spend more time on at currently to correct it. It occurs when using paranthesis on the facet. If paranthesis are used no modifier can be added
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42 at the end, but you can added it before the roll.
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43
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44 This is the standard roller formula: (Math D Numbers or Math or Fudge). If that fails the new non_stdDie looks for a regExpression formula inside
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45 the current die roller, set under the name. So all of that bloat to include the english language in the Gilcrease 1.8.0 remains bloat and Traipse's
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46 dice can be liberated to do what they want, where they want, when they want.
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47 """
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48
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49 class roller_manager(object):
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50 def __new__(cls):
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51 it = cls.__dict__.get("__it__")
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52 if it is not None: return it
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53 cls.__it__ = it = object.__new__(cls)
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54 it._init()
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55 return it
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56
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57 def _init(self):
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58 self.setRoller('std')
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59
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60 def setRoller(self, roller_class):
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61 try: self.roller_class = die_rollers[roller_class]
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62 except KeyError: raise Exception("Invalid die roller!")
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63
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64 def getRoller(self):
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65 return self.roller_class.name
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66
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67 def listRollers(self):
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68 return die_rollers.keys()
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69
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70 def completeMath(self, matches):
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71 s = matches.group(0)
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72 try: doMath = str(eval(s))
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73 except: doMath = s
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74 return doMath
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75
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76 def stdDie_Class(self, match):
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77 s = match.group(0)
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78 num_sides = s.split('d')
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79 if len(num_sides) > 1:
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80 num_sides; num = num_sides[0]; sides = num_sides[1]
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81 if sides.strip().upper() == 'F': sides = "'f'"
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82 try:
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83 if int(num) > 100 or int(sides) > 10000: return None
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84 except: pass
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85 ret = ['(', num.strip(), "**die_rollers['", self.getRoller(), "'](",
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86 sides.strip(), '))']
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87 s = ''.join(ret)
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88 return s
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89
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90 # Use this to convert ndm-style (3d6) dice to d_base format
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91 def stdDie(self, s):
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92 math = '[\(0-9\/\*\-\+\)]+'
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93 reg = re.compile('[0-9]+d\s*([0-9]+|'+math+'|[fF])')
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94 #reg = re.compile("(?:\d+|\([0-9\*/\-\+]+\))\s*[a-zA-Z]+\s*[\dFf]+") ## Original
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95 try:
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96 (result, num_matches) = reg.subn(self.stdDie_Class, s)
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97 #print 'main', result, num_matches
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98 if num_matches == 0 or result is None:
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99 reg = re.compile(math)
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100 (result, math_matches) = reg.subn(self.completeMath, s)
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101 #print 'math1', result, num_matches
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102 reg = re.compile('[0-9]+d\s*([0-9]+|'+math+'|[fF])')
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103 (result, num_matches) = reg.subn(self.stdDie_Class, result)
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104 #print 'math2', result, num_matches
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105 except Exception, e:
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106 print 'Die string conversion failed,', e
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107 return s
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108 return str(result)
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109
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110 def nonStdDie(self, s):
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111 math = '[\(0-9\/\*\-\+\)]+'
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112 reg = re.compile(math)
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113 (result, math_matches) = reg.subn(self.completeMath, s)
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114
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115 reg = re.compile(die_rollers._rollers[self.getRoller()].regExpression)
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116 (result, num_matches) = reg.subn(self.roller_class().non_stdDie, s) ## Currently skipping math
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117
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118 if num_matches == 0 or result is None: return s
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119 else: return result
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120
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121 def proccessRoll(self, s):
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122 ## Re arranged to allow the non standard dice to use the built in roller methods,
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123 ## not re-written roller methods.
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124 b = self.stdDie(s)
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125 try: b = str(eval(b))
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126 except:
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127 b = self.nonStdDie(s)
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128 try: b = str(eval(b))
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129 except: pass
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130 return b
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