annotate src/parpg/quest_engine.py @ 37:799fc37fec6d

Changes for the container system
author KarstenBock@gmx.net
date Sun, 31 Jul 2011 23:48:54 +0200
parents d60f1dab8469
children
rev   line source
0
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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
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18 from parpg.common.utils import locateFiles
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19 from parpg import vfs
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20
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21 class Quest(object):
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22 """Class that holds the information for a quest"""
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23 def __init__(self, quest_id, quest_giver_id, quest_name, description,
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24 variables):
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25 self.quest_id = quest_id
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26 self.quest_giver_id = quest_giver_id
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27 self.quest_name = quest_name
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28 self.description = description
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29 self.quest_variables = variables
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30
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31 def setValue(self, variable_name, value):
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32 """Set the value of a quest variable
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33 @param variable_name: the name of the variable to set
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34 @param value: the value you want to assign to the variable
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35 @return: True on success
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36 @return: False when it failes"""
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37
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38 if self.quest_variables.has_key(variable_name):
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39 self.quest_variables[variable_name]["value"] = value
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40 return True
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41 else:
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42 return False
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43
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44 def getValue(self, variable_name):
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45 """Get the value of a quest_variable
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46 @param variable_name: the name of the variable to set
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47 @return: the value of the quest_variable"""
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48 if self.quest_variables.has_key(variable_name):
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49 return self.quest_variables[variable_name]["value"]
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50 else:
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51 return False
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52
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53 def getGoalValue(self, variable_name):
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54 """Get the goal value of a quest_variable
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55 @param variable_name: the name of the variable to set
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56 @return: the goal value of the quest variable"""
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57 if self.quest_variables.has_key(variable_name):
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58 return self.quest_variables[variable_name]["goal_value"]
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59 else:
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60 return False
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61
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62 def increaseValue(self, variable_name, value):
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63 """Increase a variable by a specified value
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64 @param variable_name: the name of the variable to set
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65 @param value: the value you want to increase the variable with
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66 @return: True on success
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67 @return: False when it fails"""
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68 if self.quest_variables.has_key(variable_name):
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69 self.quest_variables[variable_name]["value"] += value
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70 return True
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71 else:
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72 return False
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73
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74 def decreaseValue(self, variable_name, value):
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75 """Decrease a variable by a specified value
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76 @param variable_name: the name of the variable to set
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77 @param value: the value you want to decrease the variable with
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78 @return: True on success
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79 @return: False when it failes"""
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80 if self.quest_variables.has_key(variable_name):
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81 self.quest_variables[variable_name]["value"] -= value
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82 return True
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83 else:
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84 return False
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85
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86 def isGoalValue(self, variable_name):
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87 """Check if the variable has reached it's goal value
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88 @param variable_name: the name of the variable to check
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89 @return: True when the variable has reached the goal value
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90 @return: False when it has not reached the goal value"""
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91 if self.quest_variables.has_key(variable_name):
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92 return self.quest_variables[variable_name]["value"] == \
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93 self.quest_variables[variable_name]["goal_value"]
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94 else:
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95 return False
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96
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97 def isEqualOrBiggerThanGoalValue(self, variable_name):
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98 """Check if the variable is equil or bigger then it's goal value
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99 @param variable_name: the name of the variable to set
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100 @return: True when it has reached or exceeded the goal value
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101 @return: False when it has not reached or exceeded the goal value """
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102 if variable_name in self.quest_variables:
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103 return self.quest_variables[variable_name]["value"] >= \
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104 self.quest_variables[variable_name]["goal_value"]
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105 else:
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106 return False
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107
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108 def restartQuest(self):
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109 """Restarts the quest. This sets all values to the reset values,
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110 if there is a reset value present """
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111 for variable in self.quest_variables.itervalues():
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112 if variable.has_key("reset_value"):
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113 variable["value"] = variable["reset_value"]
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114
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115 class QuestEngine(dict):
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116 def __init__(self, quest_dir):
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117 """Create a quest engine object"""
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118 dict.__init__(self)
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119 self.empty_quest = Quest(None, None, None, None, {})
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120 self.quests = {}
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121 self.active_quests = []
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122 self.finished_quests = []
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123 self.failed_quests = []
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124 self.quest_dir = quest_dir
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125
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126 def __str__(self):
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127 return self.quests.__str__()
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128
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129 def __getitem__(self, key):
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130 try:
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131 return self.quests.__getitem__(key)
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132 except KeyError:
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133 return self.empty_quest
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134
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135 def items(self):
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136 return self.quests.items()
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137
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138 def values(self):
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139 return self.quests.values()
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140
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141 def keys(self):
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142 return self.quests.keys()
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143
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144 def readQuests(self):
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145 """Reads in the quests in the quest directory"""
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146 filepaths = locateFiles("*.yaml", self.quest_dir)
0
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147 self.quests = {}
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148 self.active_quests = []
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149 self.finished_quests = []
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150 self.failed_quests = []
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151 for filepath in filepaths:
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152 quest_file = vfs.VFS.open(filepath)
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153 tree = yaml.load(quest_file)
0
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154 quest_properties = tree["QUEST_PROPERTIES"]
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155 variable_defines = tree["DEFINES"]
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156
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157 self.quests[quest_properties["quest_id"]] = \
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158 Quest(quest_properties["quest_id"],
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159 quest_properties["quest_giver_id"],
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160 quest_properties["quest_name"],
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161 quest_properties["description"],
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162 variable_defines)
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163
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164 def activateQuest(self, quest_id):
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165 """Add a quest to the quest log
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166 @param quest: the quest id of the quest to add to the quest log
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167 @return: True if succesfully added
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168 @return: False if failed to add"""
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169
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170 if quest_id in self.quests \
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171 and not (quest_id in self.active_quests \
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172 or quest_id in self.finished_quests):
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173 self.active_quests.append(quest_id)
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174 return True
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175 return False
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176
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177 def finishQuest(self, quest_id):
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178 """Move a quest to the finished quests log
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179 @param quest_id: The id of the quest you want to move
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180 @return: True on success
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181 @return: False when it failes"""
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182 if quest_id in self.active_quests:
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183 self.finished_quests.append(quest_id)
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184 self.active_quests.remove(quest_id)
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185 return True
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186 return False
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187
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188 def restartQuest(self, quest_id):
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189 """Restart a quest
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190 @param quest_id: ID of the quest you want to restart
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191 @return: True on success
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192 @return: False when it failes"""
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193 if quest_id in self.active_quests:
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194 self.quests[quest_id].restartQuest()
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195
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196 def failQuest(self, quest_id):
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197 """Set a quest to failed
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198 @param quest_id: ID of the quest you want to fail
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199 @return: True on success
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200 @return: False when it failes"""
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201 if quest_id in self.active_quests:
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202 self.failed_quests.append(quest_id)
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203 self.active_quests.remove(quest_id)
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204 return True
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205 return False
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206
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207 def hasQuest(self, quest_id):
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208 """Check whether a quest is present in the quest_list.
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209 It doesn't matter which state the quest is, or even if its
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210 started.
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211 @param quest_id: ID of the quest you want to check
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212 @return: True on when the quest is in the quest log
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213 @return: False when it's not in the quest log"""
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214 return quest_id in self.quests
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215
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216 def hasActiveQuest(self, quest_id):
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217 """Check whether a quest is in the quest log
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218 @param quest_id: ID of the quest you want to check
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219 @return: True on when the quest is in the quest log
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220 @return: False when it's not in the quest log"""
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221 return quest_id in self.active_quests
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222
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223 def hasFinishedQuest(self, quest_id):
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224 """Check whether a quest is in the finished quests log
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225 @param quest_id: ID of the quest you want to check
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226 @return: True on when the quest is in the finished quests log
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227 @return: False when it's not in the finished quests log"""
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228 return quest_id in self.finished_quests
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229
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230 def hasFailedQuest(self, quest_id):
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231 """Check whether a quest is in the failed quests log
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232 @param quest_id: ID of the quest you want to check
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233 @return: True on when the quest is in the failed quests log
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234 @return: False when it's not in the failed quests log"""
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235 return quest_id in self.failed_quests
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236
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237 def getStateForSaving(self):
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238 """Prepares state for saving
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239 @type state: dictionary
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240 @param state: State of the object"""
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241 ret_dict = {}
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242 variables_dict = ret_dict["Variables"] = {}
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243 for quest in self.quests.itervalues():
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244 quest_dict = variables_dict[quest.quest_id] = {}
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245 for variable, data in quest.quest_variables.iteritems():
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246 quest_dict[variable] = data["value"]
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247 ret_dict["ActiveQuests"] = self.active_quests
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248 ret_dict["FinishedQuests"] = self.finished_quests
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249 ret_dict["FailedQuests"] = self.failed_quests
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250 return ret_dict
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251
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252 def restoreFromState(self, state):
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253 """Restores the state"""
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254 variables_dict = state["Variables"]
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255 for quest_id, variables in variables_dict.iteritems():
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256 for variable, value in variables.iteritems():
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257 self.quests[quest_id].setValue(variable, value)
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258 self.active_quests = state["ActiveQuests"]
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259 self.finished_quests = state["FinishedQuests"]
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260 self.failed_quests = state["FailedQuests"]