132 lines
4.9 KiB
Python
132 lines
4.9 KiB
Python
# ===============================================================================
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# Copyright (C) 2015 Ryan Holmes
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#
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# This file is part of eos.
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#
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# eos is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Lesser General Public License as published by
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# the Free Software Foundation, either version 2 of the License, or
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# (at your option) any later version.
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#
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# eos is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public License
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# along with eos. If not, see <http://www.gnu.org/licenses/>.
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# ===============================================================================
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from logbook import Logger
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from sqlalchemy.orm import validates, reconstructor
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import eos.db
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from eos.eqBase import EqBase
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pyfalog = Logger(__name__)
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class Mutator(EqBase):
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""" Mutators are the object that represent an attribute override on the module level, in conjunction with
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mutaplasmids. Each mutated module, when created, is instantiated with a list of these objects, dictated by the
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mutaplasmid that is used on the base module.
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A note on the different attributes on this object:
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* attribute: points to the definition of the attribute from dgmattribs.
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* baseAttribute: points to the attribute defined for the base item (contains the base value with with to mutate)
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* dynamicAttribute: points to the Mutaplasmid definition of the attribute, including min/max
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This could probably be cleaned up with smarter relationships, but whatever
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"""
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def __init__(self, module, attr, value):
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# this needs to be above module assignment, as assigning the module will add it to the list and it via
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# relationship and needs this set 4correctly
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self.attrID = attr.ID
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self.module = module
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self.moduleID = module.ID
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self.__attr = attr
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self.build()
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self.value = value # must run after the build(), because the validator requires build() to run first
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@reconstructor
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def init(self):
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self.__attr = None
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if self.attrID:
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self.__attr = eos.db.getAttributeInfo(self.attrID)
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if self.__attr is None:
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pyfalog.error("Attribute (id: {0}) does not exist", self.attrID)
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return
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self.build()
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self.value = self.value # run the validator (to ensure we catch any changed min/max values might CCP release)
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def build(self):
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# try...except here to catch orphaned mutators. Pretty rare, only happens so far if hacking the database
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# But put it here to remove the module link if it happens, until a better solution can be developed
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try:
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# dynamic attribute links to the Mutaplasmids attribute definition for this mutated definition
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self.dynamicAttribute = next(a for a in self.module.mutaplasmid.attributes if a.attributeID == self.attrID)
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# base attribute links to the base ite's attribute for this mutated definition (contains original, base value)
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self.baseAttribute = self.module.item.attributes[self.dynamicAttribute.name]
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except:
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self.module = None
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@validates("value")
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def validator(self, key, val):
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""" Validates values as properly falling within the range of the modules' Mutaplasmid """
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mod = val / self.baseValue
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if self.minMod <= mod <= self.maxMod:
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# sweet, all good
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returnVal = val
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else:
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# need to fudge the numbers a bit. Go with the value closest to base
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if val >= 0:
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returnVal = min(self.maxValue, max(self.minValue, val))
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else:
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returnVal = max(self.maxValue, min(self.minValue, val))
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return returnVal
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@property
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def isInvalid(self):
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# @todo: need to test what happens:
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# 1) if an attribute is removed from the EVE database
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# 2) if a mutaplasmid does not have the attribute anymore
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# 3) if a mutaplasmid does not exist (in eve or on the module's item)
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# Can remove invalid ones in a SQLAlchemy collection class... eventually
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return self.__attr is None
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@property
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def highIsGood(self):
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return self.attribute.highIsGood
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@property
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def minMod(self):
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return round(self.dynamicAttribute.min, 3)
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@property
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def maxMod(self):
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return round(self.dynamicAttribute.max, 3)
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@property
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def baseValue(self):
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return self.baseAttribute.value
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@property
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def minValue(self):
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return self.minMod * self.baseAttribute.value
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@property
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def maxValue(self):
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return self.maxMod * self.baseAttribute.value
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@property
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def attribute(self):
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return self.__attr
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