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annotate components/equip.py @ 143:fa5c769468f0

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get_equipable now checks if wearer is valid and returns None if it is not. This will fix a falsely raised SlotInvalidError.
author KarstenBock@gmx.net
date Sun, 09 Oct 2011 19:23:59 +0200
parents f2ef124128db
children
rev   line source
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e856b604b650 Changed "import bGrease" to "import parpg.bGrease".
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1 # This program is free software: you can redistribute it and/or modify
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2 # it under the terms of the GNU General Public License as published by
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3 # the Free Software Foundation, either version 3 of the License, or
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4 # (at your option) any later version.
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5 #
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6 # This program is distributed in the hope that it will be useful,
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7 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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8 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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9 # GNU General Public License for more details.
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10 #
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11 # You should have received a copy of the GNU General Public License
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12 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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13
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939984cff702 Added Base component, which has a saveable_fields property. It is supposed to be derived from, thus it is not in the components list.
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14 from base import Base
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15
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16 class Equip(Base):
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17 """
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18 Component that stores the equipment (what is being worn/wielded).
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19 """
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20
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21 def __init__(self):
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22 Base.__init__(self, head=object, neck=object, body=object, belt=object,
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23 leg=object, feet=object, l_arm=object, r_arm=object)
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fa5c769468f0 get_equipable now checks if wearer is valid and returns None if it is not. This will fix a falsely raised SlotInvalidError.
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24 self.head = None
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25 self.neck = None
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26 self.body = None
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27 self.belt = None
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28 self.leg = None
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29 self.feet = None
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30 self.l_arm = None
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31 self.r_arm = None
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32
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33 @property
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34 def saveable_fields(self):
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35 return []
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36
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37 class SlotInvalidError(Exception):
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38 """Error that gets raised when the slot is invalid."""
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39
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40 def __init__(self, slot):
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41 self.slot = slot
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42
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43 def __str__(self):
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44 return "\"%s\" is not a valid slot." % self.slot
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45
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46 class AlreadyEquippedError(Exception):
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47 """Error that gets raised when the equipable already has a wearer"""
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48
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49 def __str__(self):
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50 return "The equipable is already weared."
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51
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52 class CannotBeEquippedInSlot(Exception):
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53 """Error that gets raised when the equipable can't be equiped in that
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54 slot"""
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55
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56 def __init__(self, slot, equipable):
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57 self.slot = slot
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58 self.equipable = equipable
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59
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60 def __str__(self):
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61 return ("%s is not in the equipables slots. (%s)" %
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62 (self.slot, ', '.join(self.equipable.possible_slots))
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63 )
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64
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65
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66 def equip(wearer, equipable, slot):
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67 """Equip the wearer with the given equipable.
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68 @returns The equipable that was at the given slot, or None"""
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69 if equipable.wearer:
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70 raise AlreadyEquippedError
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71 if slot in equipable.possible_slots:
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72 try:
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9e03f7816061 (Re)added setting of inventory and equipment in the object files.
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73 old_item = getattr(wearer, slot) if hasattr(wearer, slot) else None
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74 setattr(wearer, slot, equipable)
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75 equipable.in_slot = slot
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76 equipable.wearer = wearer
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77 if old_item:
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78 old_item.in_slot = None
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79 old_item.wearer = None
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80 return old_item
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81 except AttributeError:
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82 raise SlotInvalidError(slot)
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83 raise CannotBeEquippedInSlot(slot, equipable)
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c1959525efda Added get_equipable and take_equipable functions.
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84
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85 def get_equipable(wearer, slot):
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86 """Return the equipable in the given slot"""
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87 if not wearer:
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88 return None
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89 try:
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90 item = getattr(wearer, slot)
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91 return item
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92 except AttributeError:
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93 raise SlotInvalidError(slot)
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94
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95 def take_equipable(wearer, slot):
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96 """Remove equipable from the given slot and return it"""
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97 item = get_equipable(wearer, slot)
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98 setattr(wearer, slot, None)
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99 if item:
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100 item.in_slot = None
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101 item.wearer = None
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102 return item
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103
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104