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annotate src/parpg/inventory.py @ 0:1fd2201f5c36

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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
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children 7b21d460fc31
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1fd2201f5c36 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 from parpg.objects.base import Container
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17 from parpg.objects.composed import SingleItemContainer as Slot
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18
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19 import copy
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20
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21 # TODO: many missing function definitions in this code
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22
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23 class Inventory(Container):
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24 """The class to represent inventory 'model': allow operations with
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25 inventory contents, perform weight/bulk calculations, etc"""
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26 def __init__(self, **kwargs):
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27 """Initialise instance"""
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28 Container.__init__(self, **kwargs)
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29 self.items = {"head": Slot(), "neck": Slot(),
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30 "shoulders": Slot(), "chest": Slot(),
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31 "abdomen": Slot(), "left_arm": Slot(),
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32 "right_arm": Slot(),"groin": Slot(),
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33 "hips": Slot(), "left_leg": Slot(),
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34 "right_leg": Slot(), "left_hand": Slot(),
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35 "right_hand": Slot(), "ready": Container(),
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36 "backpack": Container()}
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37 for key, item in self.items.iteritems():
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38 item.name = key
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39 kwargs = {}
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40 kwargs["container"] = item
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41 item.setScript("onPlaceItem", self.onChildPlaceItem, kwargs = kwargs)
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42 self.item_lookup = {}
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43
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44 def onChildPlaceItem(self, container):
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45 for item in container.items.itervalues():
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46 self.item_lookup[item.ID] = container.name
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47
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48 def placeItem(self, item, index=None):
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49 self.items["backpack"].placeItem(item, index)
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50 #self.item_lookup[item.ID] = "backpack"
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51
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52 def takeItem(self, item):
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53 if not item.ID in self.item_lookup:
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54 raise ValueError ('I do not contain this item: %s' % item)
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55 self.items[self.item_lookup[item.ID]].takeItem(item)
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56 del self.item_lookup[item.ID]
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57
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58 def removeItem(self, item):
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59 if not item.ID in self.item_lookup:
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60 raise ValueError ('I do not contain this item: %s' % item)
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61 self.items[self.item_lookup[item.ID]].removeItem(item)
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62 del self.item_lookup[item.ID]
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63
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64 def replaceItem(self, old_item, new_item):
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65 """Replaces the old item with the new one
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66 @param old_item: Old item which is removed
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67 @type old_item: Carryable
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68 @param new_item: New item which is added
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69 @type new_item: Carryable
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70 """
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71 if not old_item.ID in self.item_lookup:
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72 raise ValueError ('I do not contain this item: %s' % old_item)
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73 self.items[self.item_lookup[old_item.ID]]\
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74 .replaceItem(old_item, new_item)
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75
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76 def getWeight(self):
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77 """Total weight of all items in container + container's own weight"""
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78 return sum((item.weight for item in self.items.values()))
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79
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80 def setWeightDummy(self, weight):
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81 pass
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82
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83 weight = property(getWeight, setWeightDummy, "Total weight of container")
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84
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85
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86 def count(self, item_type = ""):
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87 return sum(item.count(item_type) for item in self.items.values())
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88
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89 def takeOff(self, item):
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90 return self.moveItemToSlot(item, "backpack")
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91
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92 def moveItemToSlot(self,item,slot,index=None):
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93 if not slot in self.items:
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94 raise(ValueError("%s: No such slot" % slot))
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95
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96 if item.ID in self.item_lookup:
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97 self.items[self.item_lookup[item.ID]].takeItem(item)
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98 try:
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99 self.items[slot].placeItem(item, index)
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100 except Container.SlotBusy:
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101 if index == None :
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102 offending_item = self.items[slot].items[0]
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103 else :
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104 offending_item = self.items[slot].items[index]
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105 self.items[slot].takeItem(offending_item)
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106 self.items[slot].placeItem(item, index)
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107 self.placeItem(offending_item)
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108 self.item_lookup[item.ID] = slot
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109
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110 def getItemsInSlot(self, slot, index=None):
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111 if not slot in self.items:
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112 raise(ValueError("%s: No such slot" % slot))
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113 if index != None:
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114 return self.items[slot].items.get(index)
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115 else:
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116 return copy.copy(self.items[slot].items)
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117
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118 def isSlotEmpty(self, slot, index=None):
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119 if not slot in self.items:
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120 raise(ValueError("%s: No such slot" % slot))
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121 if index == None:
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122 return self.items[slot].count() == 0
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123 else:
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124 return not index in self.items[slot].items
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125
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126
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127 def has(self, item_ID):
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128 return item_ID in self.item_lookup
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129
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130 def findItemByID(self, ID):
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131 if ID not in self.item_lookup:
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132 return None
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133 return self.items[self.item_lookup[ID]].findItemByID(ID)
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134
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135 def findItem(self, **kwargs):
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136 """Find an item in inventory by various attributes. All parameters
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137 are optional.
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138 @type name: String
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139 @param name: Object name. If the name is non-unique,
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140 first matching object is returned
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141 @type kind: String
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142 @param kind: One of the possible object kinds like "openable" or
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143 "weapon" (see base.py)
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144 @return: The item matching criteria or None if none was found"""
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145 for slot in self.items:
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146 item_found = self.items[slot].findItem(**kwargs)
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147 if item_found != None:
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148 return item_found
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149 return None
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150
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151 def __repr__(self):
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152 return "[Inventory contents: " + \
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153 reduce((lambda a,b: str(a)
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154 + ', ' + str(b)),
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155 self.items.values()) + " ]"
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156
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157 def serializeInventory(self):
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158 """Returns the inventory items as a list"""
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159 inventory = []
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160 inventory.extend(self.items["backpack"].serializeItems())
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161 for key, slot in self.items.iteritems():
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162 if key == "ready" or key == "backpack":
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163 continue
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164 elif len(slot.items) > 0:
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165 item = slot.items[0]
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166 item_dict = item.getStateForSaving()
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167 item_dict["slot"] = key
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168 item_dict["type"] = type(item).__name__
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169 inventory.append(item_dict)
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170 return inventory
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171
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172 def getStateForSaving(self):
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173 """Returns state for saving
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174 """
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175 state = {}
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176 state["Inventory"] = self.serializeInventory()
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177 return state