- Made it so peaceful animals provide more LP by default (to encourage creating your own farm).

- Increased the effectiveness of animals for the Gathering of the Forsaken Souls ritual by a factor of 4.
- Added the framework for the Purification Altar.

src/main/java/WayofTime/bloodmagic/api/BloodMagicAPI.java

@@ -221,7 +221,8 @@ public class BloodMagicAPI
      * @param entityClass
      *        - The class of the entity to blacklist.
      * @param sacrificeValue
-     *        - The Amount of LP to provide per each entity sacrificed.
+     *        - The Amount of LP to provide per each HP of the entity
+     *        sacrificed.
      */
     public static void setEntitySacrificeValue(Class<? extends EntityLivingBase> entityClass, int sacrificeValue)
     {
@@ -235,7 +236,8 @@ public class BloodMagicAPI
      * @param entityClassName
      *        - The name of the class of the entity to blacklist.
      * @param sacrificeValue
-     *        - The Amount of LP to provide per each entity sacrificed.
+     *        - The Amount of LP to provide per each HP of the entity
+     *        sacrificed.
      */
     public static void setEntitySacrificeValue(String entityClassName, int sacrificeValue)
     {

src/main/java/WayofTime/bloodmagic/api/Constants.java

@@ -33,6 +33,7 @@ public class Constants
         public static final String DIRECTION = "direction";
         public static final String REAGENT_TANKS = "reagentTanks";
         public static final String CURRENT_INCENSE = "BM:CurrentIncense";
+        public static final String CURRENT_PURITY = "BM:CurrentPurity";
         public static final String EMPTY = "Empty";
         public static final String OUTPUT_AMOUNT = "outputAmount";
         public static final String INPUT_AMOUNT = "inputAmount";

src/main/java/WayofTime/bloodmagic/api/iface/IPurificationAsh.java

@@ -0,0 +1,12 @@
+package WayofTime.bloodmagic.api.iface;
+
+import net.minecraft.item.ItemStack;
+
+public interface IPurificationAsh
+{
+    double getTotalPurity(ItemStack stack);
+
+    double getMaxPurity(ItemStack stack);
+
+    double getPurityRate(ItemStack stack);
+}

src/main/java/WayofTime/bloodmagic/api/util/helper/PurificationHelper.java

@@ -0,0 +1,39 @@
+package WayofTime.bloodmagic.api.util.helper;
+
+import net.minecraft.entity.passive.EntityAnimal;
+import net.minecraft.nbt.NBTTagCompound;
+import WayofTime.bloodmagic.api.Constants;
+
+public class PurificationHelper
+{
+    public static double getCurrentPurity(EntityAnimal animal)
+    {
+        NBTTagCompound data = animal.getEntityData();
+        if (data.hasKey(Constants.NBT.CURRENT_PURITY))
+        {
+            return data.getDouble(Constants.NBT.CURRENT_PURITY);
+        }
+
+        return 0;
+    }
+
+    public static void setCurrentPurity(EntityAnimal animal, double amount)
+    {
+        NBTTagCompound data = animal.getEntityData();
+        data.setDouble(Constants.NBT.CURRENT_PURITY, amount);
+    }
+
+    public static double addPurity(EntityAnimal animal, double added, double max)
+    {
+        double currentPurity = getCurrentPurity(animal);
+        double newAmount = Math.min(max, currentPurity + added);
+
+        if (newAmount < max)
+        {
+            setCurrentPurity(animal, newAmount);
+            return newAmount - currentPurity;
+        }
+
+        return 0;
+    }
+}