Start implementing support for mutaplasmids.

* There's a new table `mutators` that has an FK back to a module, and links to an attribute ID with it's new value
* Fixes an issue in the item state where the "base" value showed the literal base value for the attribute, regardless of override / mutators
* If there is an override and a mutated attribute, mutated value takes effect

eos/db/__init__.py

@@ -77,7 +77,7 @@ sd_lock = threading.RLock()
 from eos.db.gamedata import alphaClones, attribute, category, effect, group, icon, item, marketGroup, metaData, metaGroup, queries, traits, unit
 # noinspection PyPep8
 from eos.db.saveddata import booster, cargo, character, damagePattern, databaseRepair, drone, fighter, fit, implant, implantSet, loadDefaultDatabaseValues, \
-    miscData, module, override, price, queries, skill, targetResists, user
+    miscData, mutator, module, override, price, queries, skill, targetResists, user
 
 # Import queries
 # noinspection PyPep8

eos/db/saveddata/__init__.py

@@ -1,6 +1,7 @@
 __all__ = [
     "character",
     "fit",
+    "mutator",
     "module",
     "user",
     "skill",

eos/db/saveddata/module.py

@@ -23,6 +23,7 @@ import datetime
 
 from eos.db import saveddata_meta
 from eos.saveddata.module import Module
+from eos.saveddata.mutator import Mutator
 from eos.saveddata.fit import Fit
 
 modules_table = Table("modules", saveddata_meta,
@@ -39,4 +40,11 @@ modules_table = Table("modules", saveddata_meta,
                       CheckConstraint('("dummySlot" = NULL OR "itemID" = NULL) AND "dummySlot" != "itemID"'))
 
 mapper(Module, modules_table,
-       properties={"owner": relation(Fit)})
+       properties={
+           "owner": relation(Fit),
+           "mutators": relation(
+                   Mutator,
+                   backref="module",
+                   cascade="all,delete-orphan"
+           )
+       })

eos/db/saveddata/mutator.py

@@ -0,0 +1,35 @@
+# ===============================================================================
+# Copyright (C) 2010 Diego Duclos
+#
+# This file is part of eos.
+#
+# eos is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as published by
+# the Free Software Foundation, either version 2 of the License, or
+# (at your option) any later version.
+#
+# eos is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with eos.  If not, see <http://www.gnu.org/licenses/>.
+# ===============================================================================
+
+from sqlalchemy import Table, Column, Integer, ForeignKey, Boolean, DateTime, Float
+from sqlalchemy.orm import mapper
+import datetime
+
+from eos.db import saveddata_meta
+from eos.saveddata.mutator import Mutator
+
+mutator_table = Table("mutators", saveddata_meta,
+                        Column("moduleID", Integer, ForeignKey("modules.ID"), nullable=False, index=True),
+                        Column("attrID", Integer, primary_key=True, index=True),
+                        Column("value", Float, nullable=False),
+                        Column("created", DateTime, nullable=True, default=datetime.datetime.now),
+                        Column("modified", DateTime, nullable=True, onupdate=datetime.datetime.now)
+                        )
+
+mapper(Mutator, mutator_table)

eos/modifiedAttributeDict.py

@@ -33,6 +33,14 @@ class ItemAttrShortcut(object):
 
         return return_value or default
 
+    def getBaseAttrValue(self, key, default=0):
+        '''
+        Gets base value in this order:
+        Mutated value > override value > attribute value
+        '''
+        return_value = self.itemModifiedAttributes.getOriginal(key)
+
+        return return_value or default
 
 class ChargeAttrShortcut(object):
     def getModifiedChargeAttr(self, key, default=0):
@@ -59,8 +67,10 @@ class ModifiedAttributeDict(collections.MutableMapping):
         self.__modified = {}
         # Affected by entities
         self.__affectedBy = {}
-        # Overrides
+        # Overrides (per item)
         self.__overrides = {}
+        # Mutators (per module)
+        self.__mutators = {}
         # Dictionaries for various value modification types
         self.__forced = {}
         self.__preAssigns = {}
@@ -100,6 +110,14 @@ class ModifiedAttributeDict(collections.MutableMapping):
     def overrides(self, val):
         self.__overrides = val
 
+    @property
+    def mutators(self):
+        return {x.attr.name: x for x in self.__mutators}
+
+    @mutators.setter
+    def mutators(self, val):
+        self.__mutators = val
+
     def __getitem__(self, key):
         # Check if we have final calculated value
         key_value = self.__modified.get(key)
@@ -128,14 +146,16 @@ class ModifiedAttributeDict(collections.MutableMapping):
             del self.__intermediary[key]
 
     def getOriginal(self, key, default=None):
+        val = None
         if self.overrides_enabled and self.overrides:
-            val = self.overrides.get(key, None)
-        else:
-            val = None
+            val = self.overrides.get(key, val)
+
+        # mutators are overriden by overrides. x_x
+        val = self.mutators.get(key, val)
 
         if val is None:
             if self.original:
-                val = self.original.get(key, None)
+                val = self.original.get(key, val)
 
         if val is None and val != default:
             val = default

eos/saveddata/module.py

@@ -109,7 +109,6 @@ class Module(HandledItem, HandledCharge, ItemAttrShortcut, ChargeAttrShortcut):
             self.__charge = eos.db.getItem(self.chargeID)
 
         self.build()
-
     def build(self):
         """ Builds internal module variables from both init's """
 
@@ -129,6 +128,7 @@ class Module(HandledItem, HandledCharge, ItemAttrShortcut, ChargeAttrShortcut):
 
         if self.__item:
             self.__itemModifiedAttributes.original = self.__item.attributes
+            self.__itemModifiedAttributes.mutators = self.mutators
             self.__itemModifiedAttributes.overrides = self.__item.overrides
             self.__hardpoint = self.__calculateHardpoint(self.__item)
             self.__slot = self.__calculateSlot(self.__item)

eos/saveddata/mutator.py

@@ -0,0 +1,54 @@
+# ===============================================================================
+# Copyright (C) 2015 Ryan Holmes
+#
+# This file is part of eos.
+#
+# eos is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as published by
+# the Free Software Foundation, either version 2 of the License, or
+# (at your option) any later version.
+#
+# eos is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with eos.  If not, see <http://www.gnu.org/licenses/>.
+# ===============================================================================
+
+from logbook import Logger
+
+from sqlalchemy.orm import reconstructor
+
+import eos.db
+from eos.eqBase import EqBase
+
+pyfalog = Logger(__name__)
+
+
+class Mutator(EqBase):
+    def __init__(self, stuff, attr, value):
+        self.moduleID = stuff.ID
+        self.attrID = attr.ID
+        self.__attr = attr
+        self.value = value
+
+    @reconstructor
+    def init(self):
+        self.__attr = None
+        self.__item = None
+
+        if self.attrID:
+            self.__attr = eos.db.getAttributeInfo(self.attrID)
+            if self.__attr is None:
+                pyfalog.error("Attribute (id: {0}) does not exist", self.attrID)
+                return
+
+    @property
+    def attr(self):
+        return self.__attr
+
+    @property
+    def item(self):
+        return self.__item

gui/builtinItemStatsViews/itemAttributes.py

@@ -174,7 +174,12 @@ class ItemParams(wx.Panel):
             info = self.attrInfo.get(name)
             att = self.attrValues[name]
 
-            valDefault = getattr(info, "value", None)
+            # If we're working with a stuff object, we should get the original value from our getBaseAttrValue function,
+            # which will return the value with respect to the effective base (with mutators / overrides in place)
+            valDefault = getattr(info, "value", None)  # Get default value from attribute
+            if self.stuff is not None:
+                # if it's a stuff, overwrite default (with fallback to current value)
+                valDefault = self.stuff.getBaseAttrValue(name, valDefault)
             valueDefault = valDefault if valDefault is not None else att
 
             val = getattr(att, "value", None)