Implement getNormalizedEnchantmentCharge() method and use it

apps/openmw/mwgui/sortfilteritemmodel.cpp

@@ -86,66 +86,24 @@ namespace
             if (!leftName.empty())
             {
                 const ESM::Enchantment* ench = MWBase::Environment::get().getWorld()->getStore().get<ESM::Enchantment>().search(leftName);
-
                 if (ench)
                 {
                     if (ench->mData.mType == ESM::Enchantment::ConstantEffect)
-                    {
                         leftChargePercent = 101;
-                    }
                     else
-                    {
-                        int maxEnchCharge = ench->mData.mCharge;
-                        if (maxEnchCharge == 0)
-                        {
-                            leftChargePercent = 0;
-                        }
-                        else
-                        {
-                            float enchCharge = left.mBase.getCellRef().getEnchantmentCharge();
-                            if (enchCharge == -1)
-                            {
-                                leftChargePercent = 100;
-                            }
-                            else
-                            {
-                                leftChargePercent = static_cast<int>(enchCharge / static_cast<float>(maxEnchCharge) * 100);
-                            }
-                        }
-                    }
+                        leftChargePercent = static_cast<int>(left.mBase.getCellRef().getNormalizedEnchantmentCharge(ench->mData.mCharge) * 100);
                 }
             }
 
             if (!rightName.empty())
             {
                 const ESM::Enchantment* ench = MWBase::Environment::get().getWorld()->getStore().get<ESM::Enchantment>().search(rightName);
-                
                 if (ench)
                 {
                     if (ench->mData.mType == ESM::Enchantment::ConstantEffect)
-                    {
                         rightChargePercent = 101;
-                    }
                     else
-                    {
-                        int maxEnchCharge = ench->mData.mCharge;
-                        if (maxEnchCharge == 0)
-                        {
-                            rightChargePercent = 0;
-                        }
-                        else
-                        {
-                            float enchCharge = right.mBase.getCellRef().getEnchantmentCharge();
-                            if (enchCharge == -1)
-                            {
-                                rightChargePercent = 100;
-                            }
-                            else
-                            {
-                                rightChargePercent = static_cast<int>(enchCharge / static_cast<float>(maxEnchCharge) * 100);
-                            }
-                        }
-                    }
+                        rightChargePercent = static_cast<int>(right.mBase.getCellRef().getNormalizedEnchantmentCharge(ench->mData.mCharge) * 100);
                 }
             }
 

apps/openmw/mwgui/tradewindow.cpp

@@ -34,8 +34,9 @@ namespace
     {
         float price = static_cast<float>(item.getClass().getValue(item));
         if (item.getClass().hasItemHealth(item))
+        {
             price *= item.getClass().getItemNormalizedHealth(item);
-
+        }
         return static_cast<int>(price * count);
     }
 

apps/openmw/mwgui/windowmanagerimp.cpp

@@ -1369,22 +1369,7 @@ namespace MWGui
         const ESM::Enchantment* ench = mStore->get<ESM::Enchantment>()
                 .find(item.getClass().getEnchantment(item));
 
-        int chargePercent = 100;
-
-        int maxEnchCharge = ench->mData.mCharge;
-        if (maxEnchCharge == 0)
-        {
-            chargePercent = 0;
-        }
-        else
-        {
-            float enchCharge = item.getCellRef().getEnchantmentCharge();
-            if (enchCharge != -1)
-            {
-                chargePercent = static_cast<int>(enchCharge / static_cast<float>(maxEnchCharge) * 100);
-            }
-        }
-
+        int chargePercent = static_cast<int>(item.getCellRef().getNormalizedEnchantmentCharge(ench->mData.mCharge) * 100);
         mHud->setSelectedEnchantItem(item, chargePercent);
         mSpellWindow->setTitle(item.getClass().getName(item));
     }
@@ -1402,7 +1387,6 @@ namespace MWGui
         {
             durabilityPercent = static_cast<int>(item.getClass().getItemNormalizedHealth(item));
         }
-
         mHud->setSelectedWeapon(item, durabilityPercent);
         mInventoryWindow->setTitle(item.getClass().getName(item));
     }

apps/openmw/mwworld/cellref.cpp

@@ -70,6 +70,22 @@ namespace MWWorld
         return mCellRef.mEnchantmentCharge;
     }
 
+    float CellRef::getNormalizedEnchantmentCharge(int maxCharge) const
+    {
+        if (maxCharge == 0)
+        {
+            return 0;
+        }
+        else if (mCellRef.mEnchantmentCharge == -1)
+        {
+            return 1;
+        }
+        else
+        {
+            return mCellRef.mEnchantmentCharge / static_cast<float>(maxCharge);
+        }
+    }
+
     void CellRef::setEnchantmentCharge(float charge)
     {
         if (charge != mCellRef.mEnchantmentCharge)

apps/openmw/mwworld/cellref.hpp

@@ -56,6 +56,9 @@ namespace MWWorld
         // Remaining enchantment charge. This could be -1 if the charge was not touched yet (i.e. full).
         float getEnchantmentCharge() const;
 
+        // Remaining enchantment charge rescaled to the supplied maximum charge (such as one of the enchantment).
+        float getNormalizedEnchantmentCharge(int maxCharge) const;
+
         void setEnchantmentCharge(float charge);
 
         // For weapon or armor, this is the remaining item health.