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annotate quest_engine.py @ 0:7a89ea5404b1

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Initial commit of parpg-core.
author M. George Hansen <technopolitica@gmail.com>
date Sat, 14 May 2011 01:12:35 -0700
parents
children 06145a6ee387
rev   line source
0
7a89ea5404b1 Initial commit of parpg-core.
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1 # This file is part of PARPG.
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2
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3 # PARPG is free software: you can redistribute it and/or modify
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4 # it under the terms of the GNU General Public License as published by
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5 # the Free Software Foundation, either version 3 of the License, or
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6 # (at your option) any later version.
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7
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8 # PARPG is distributed in the hope that it will be useful,
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9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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11 # GNU General Public License for more details.
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12
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13 # You should have received a copy of the GNU General Public License
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14 # along with PARPG. If not, see <http://www.gnu.org/licenses/>.
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15
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16 import yaml
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17 from parpg.common.utils import locateFiles
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18 import os.path
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19
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20 class Quest(object):
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21 """Class that holds the information for a quest"""
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22 def __init__(self, quest_id, quest_giver_id, quest_name, description,
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23 variables):
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24 self.quest_id = quest_id
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25 self.quest_giver_id = quest_giver_id
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26 self.quest_name = quest_name
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27 self.description = description
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28 self.quest_variables = variables
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29
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30 def setValue(self, variable_name, value):
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31 """Set the value of a quest variable
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32 @param variable_name: the name of the variable to set
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33 @param value: the value you want to assign to the variable
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34 @return: True on success
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35 @return: False when it failes"""
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36
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37 if self.quest_variables.has_key(variable_name):
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38 self.quest_variables[variable_name]["value"] = value
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39 return True
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40 else:
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41 return False
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42
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43 def getValue(self, variable_name):
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44 """Get the value of a quest_variable
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45 @param variable_name: the name of the variable to set
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46 @return: the value of the quest_variable"""
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47 if self.quest_variables.has_key(variable_name):
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48 return self.quest_variables[variable_name]["value"]
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49 else:
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50 return False
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51
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52 def getGoalValue(self, variable_name):
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53 """Get the goal value of a quest_variable
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54 @param variable_name: the name of the variable to set
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55 @return: the goal value of the quest variable"""
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56 if self.quest_variables.has_key(variable_name):
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57 return self.quest_variables[variable_name]["goal_value"]
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58 else:
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59 return False
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60
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61 def increaseValue(self, variable_name, value):
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62 """Increase a variable by a specified value
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63 @param variable_name: the name of the variable to set
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64 @param value: the value you want to increase the variable with
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65 @return: True on success
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66 @return: False when it fails"""
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67 if self.quest_variables.has_key(variable_name):
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68 self.quest_variables[variable_name]["value"] += value
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69 return True
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70 else:
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71 return False
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72
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73 def decreaseValue(self, variable_name, value):
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74 """Decrease a variable by a specified value
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75 @param variable_name: the name of the variable to set
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76 @param value: the value you want to decrease the variable with
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77 @return: True on success
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78 @return: False when it failes"""
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79 if self.quest_variables.has_key(variable_name):
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80 self.quest_variables[variable_name]["value"] -= value
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81 return True
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82 else:
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83 return False
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84
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85 def isGoalValue(self, variable_name):
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86 """Check if the variable has reached it's goal value
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87 @param variable_name: the name of the variable to check
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88 @return: True when the variable has reached the goal value
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89 @return: False when it has not reached the goal value"""
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90 if self.quest_variables.has_key(variable_name):
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91 return self.quest_variables[variable_name]["value"] == \
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92 self.quest_variables[variable_name]["goal_value"]
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93 else:
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94 return False
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95
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96 def isEqualOrBiggerThanGoalValue(self, variable_name):
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97 """Check if the variable is equil or bigger then it's goal value
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98 @param variable_name: the name of the variable to set
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99 @return: True when it has reached or exceeded the goal value
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100 @return: False when it has not reached or exceeded the goal value """
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101 if variable_name in self.quest_variables:
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102 return self.quest_variables[variable_name]["value"] >= \
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103 self.quest_variables[variable_name]["goal_value"]
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104 else:
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105 return False
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106
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107 def restartQuest(self):
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108 """Restarts the quest. This sets all values to the reset values,
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109 if there is a reset value present """
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110 for variable in self.quest_variables.itervalues():
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111 if variable.has_key("reset_value"):
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112 variable["value"] = variable["reset_value"]
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113
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114 class QuestEngine(dict):
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115 def __init__(self, quest_dir):
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116 """Create a quest engine object"""
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117 dict.__init__(self)
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118 self.empty_quest = Quest(None, None, None, None, {})
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119 self.quests = {}
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120 self.active_quests = []
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121 self.finished_quests = []
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122 self.failed_quests = []
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123 self.quest_dir = quest_dir
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124
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125 def __str__(self):
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126 return self.quests.__str__()
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127
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128 def __getitem__(self, key):
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129 try:
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130 return self.quests.__getitem__(key)
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131 except KeyError:
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132 return self.empty_quest
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133
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134 def items(self):
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135 return self.quests.items()
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136
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137 def values(self):
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138 return self.quests.values()
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139
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140 def keys(self):
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141 return self.quests.keys()
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142
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143 def readQuests(self):
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144 """Reads in the quests in the quest directory"""
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145 files = locateFiles("*.yaml", self.quest_dir)
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146 self.quests = {}
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147 self.active_quests = []
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148 self.finished_quests = []
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149 self.failed_quests = []
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150 for quest_file in files:
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151 quest_file = os.path.relpath(quest_file).replace("\\", "/")
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152 tree = yaml.load(open(quest_file))
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153 quest_properties = tree["QUEST_PROPERTIES"]
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154 variable_defines = tree["DEFINES"]
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155
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156 self.quests[quest_properties["quest_id"]] = \
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157 Quest(quest_properties["quest_id"],
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158 quest_properties["quest_giver_id"],
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159 quest_properties["quest_name"],
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160 quest_properties["description"],
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161 variable_defines)
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162
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163 def activateQuest(self, quest_id):
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164 """Add a quest to the quest log
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165 @param quest: the quest id of the quest to add to the quest log
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166 @return: True if succesfully added
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167 @return: False if failed to add"""
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168
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169 if quest_id in self.quests \
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170 and not (quest_id in self.active_quests \
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171 or quest_id in self.finished_quests):
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172 self.active_quests.append(quest_id)
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173 return True
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174 return False
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175
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176 def finishQuest(self, quest_id):
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177 """Move a quest to the finished quests log
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178 @param quest_id: The id of the quest you want to move
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179 @return: True on success
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180 @return: False when it failes"""
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181 if quest_id in self.active_quests:
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182 self.finished_quests.append(quest_id)
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183 self.active_quests.remove(quest_id)
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184 return True
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185 return False
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186
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187 def restartQuest(self, quest_id):
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188 """Restart a quest
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189 @param quest_id: ID of the quest you want to restart
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190 @return: True on success
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191 @return: False when it failes"""
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192 if quest_id in self.active_quests:
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193 self.quests[quest_id].restartQuest()
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194
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195 def failQuest(self, quest_id):
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196 """Set a quest to failed
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197 @param quest_id: ID of the quest you want to fail
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198 @return: True on success
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199 @return: False when it failes"""
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200 if quest_id in self.active_quests:
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201 self.failed_quests.append(quest_id)
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202 self.active_quests.remove(quest_id)
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203 return True
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204 return False
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205
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206 def hasQuest(self, quest_id):
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207 """Check whether a quest is present in the quest_list.
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208 It doesn't matter which state the quest is, or even if its
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209 started.
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210 @param quest_id: ID of the quest you want to check
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211 @return: True on when the quest is in the quest log
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212 @return: False when it's not in the quest log"""
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213 return quest_id in self.quests
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214
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215 def hasActiveQuest(self, quest_id):
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216 """Check whether a quest is in the quest log
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217 @param quest_id: ID of the quest you want to check
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218 @return: True on when the quest is in the quest log
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219 @return: False when it's not in the quest log"""
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220 return quest_id in self.active_quests
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221
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222 def hasFinishedQuest(self, quest_id):
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223 """Check whether a quest is in the finished quests log
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224 @param quest_id: ID of the quest you want to check
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225 @return: True on when the quest is in the finished quests log
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226 @return: False when it's not in the finished quests log"""
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227 return quest_id in self.finished_quests
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228
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229 def hasFailedQuest(self, quest_id):
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230 """Check whether a quest is in the failed quests log
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231 @param quest_id: ID of the quest you want to check
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232 @return: True on when the quest is in the failed quests log
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233 @return: False when it's not in the failed quests log"""
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234 return quest_id in self.failed_quests
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235
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236 def getStateForSaving(self):
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237 """Prepares state for saving
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238 @type state: dictionary
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239 @param state: State of the object"""
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240 ret_dict = {}
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241 variables_dict = ret_dict["Variables"] = {}
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242 for quest in self.quests.itervalues():
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243 quest_dict = variables_dict[quest.quest_id] = {}
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244 for variable, data in quest.quest_variables.iteritems():
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245 quest_dict[variable] = data["value"]
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246 ret_dict["ActiveQuests"] = self.active_quests
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247 ret_dict["FinishedQuests"] = self.finished_quests
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248 ret_dict["FailedQuests"] = self.failed_quests
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249 return ret_dict
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250
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251 def restoreFromState(self, state):
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252 """Restores the state"""
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253 variables_dict = state["Variables"]
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254 for quest_id, variables in variables_dict.iteritems():
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255 for variable, value in variables.iteritems():
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256 self.quests[quest_id].setValue(variable, value)
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257 self.active_quests = state["ActiveQuests"]
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258 self.finished_quests = state["FinishedQuests"]
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259 self.failed_quests = state["FailedQuests"]