Mercurial > parpg-core

annotate src/parpg/components/equip.py @ 170:371b17bc9113

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Added ReplaceItemAction, to dialogueactions, which replaces a single item in the players inventory.
author KarstenBock@gmx.net
date Sun, 09 Oct 2011 14:39:02 +0200
parents 3aff9dee1b4f
children fadc02e77ae1
rev   line source
92
0f659c7675f6 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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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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24
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25 @property
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26 def saveable_fields(self):
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27 return []
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28
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29 class SlotInvalidError(Exception):
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30 """Error that gets raised when the slot is invalid."""
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31
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32 def __init__(self, slot):
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33 self.slot = slot
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34
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35 def __str__(self):
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36 return "\"%s\" is not a valid slot." % self.slot
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37
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38 class AlreadyEquippedError(Exception):
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39 """Error that gets raised when the equipable already has a wearer"""
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40
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41 def __str__(self):
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42 return "The equipable is already weared."
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43
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44 class CannotBeEquippedInSlot(Exception):
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45 """Error that gets raised when the equipable can't be equiped in that
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46 slot"""
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47
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48 def __init__(self, slot, equipable):
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49 self.slot = slot
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50 self.equipable = equipable
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51
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52 def __str__(self):
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53 return ("%s is not in the equipables slots. (%s)" %
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54 (self.slot, ', '.join(self.equipable.possible_slots))
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55 )
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56
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57
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58 def equip(wearer, equipable, slot):
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59 """Equip the wearer with the given equipable.
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60 @returns The equipable that was at the given slot, or None"""
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61 if equipable.wearer:
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62 raise AlreadyEquippedError
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63 if slot in equipable.possible_slots:
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64 try:
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65 old_item = getattr(wearer, slot) if hasattr(wearer, slot) else None
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66 setattr(wearer, slot, equipable)
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67 equipable.in_slot = slot
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68 equipable.wearer = wearer
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69 if old_item:
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70 old_item.in_slot = None
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71 old_item.wearer = None
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72 return old_item
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73 except AttributeError:
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74 raise SlotInvalidError(slot)
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75 raise CannotBeEquippedInSlot(slot, equipable)
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76
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77 def get_equipable(wearer, slot):
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78 """Return the equipable in the given slot"""
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79 try:
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80 item = getattr(wearer, slot)
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81 return item
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82 except AttributeError:
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83 raise SlotInvalidError(slot)
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84
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85 def take_equipable(wearer, slot):
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86 """Remove equipable from the given slot and return it"""
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87 item = get_equipable(wearer, slot)
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88 setattr(wearer, slot, None)
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89 if item:
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90 item.in_slot = None
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91 item.wearer = None
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92 return item
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93
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94