Added KB resistance upgrade

src/main/java/WayofTime/bloodmagic/livingArmour/LivingArmourUpgradeKnockbackResist.java

@@ -0,0 +1,75 @@
+package WayofTime.bloodmagic.livingArmour;
+
+import java.util.UUID;
+
+import net.minecraft.entity.SharedMonsterAttributes;
+import net.minecraft.entity.ai.attributes.AttributeModifier;
+import net.minecraft.nbt.NBTTagCompound;
+import WayofTime.bloodmagic.api.Constants;
+import WayofTime.bloodmagic.api.livingArmour.LivingArmourUpgrade;
+
+import com.google.common.collect.HashMultimap;
+import com.google.common.collect.Multimap;
+
+public class LivingArmourUpgradeKnockbackResist extends LivingArmourUpgrade
+{
+    public static final int[] costs = new int[] { 3, 7, 13, 26, 42 };
+    public static final double[] kbModifier = new double[] { 0.2, 0.4, 0.6, 0.8, 1.0 };
+    public static final int[] healthModifier = new int[] { 0, 0, 0, 4, 10 };
+
+    public LivingArmourUpgradeKnockbackResist(int level)
+    {
+        super(level);
+    }
+
+    @Override
+    public Multimap<String, AttributeModifier> getAttributeModifiers()
+    {
+        Multimap<String, AttributeModifier> modifierMap = HashMultimap.<String, AttributeModifier>create();
+
+        modifierMap.put(SharedMonsterAttributes.knockbackResistance.getAttributeUnlocalizedName(), new AttributeModifier(new UUID(895132, 1), "Knockback modifier" + 1, kbModifier[this.level], 0));
+
+        if (healthModifier[this.level] > 0)
+        {
+            modifierMap.put(SharedMonsterAttributes.maxHealth.getAttributeUnlocalizedName(), new AttributeModifier(new UUID(952142, 1), "Health modifier" + 1, healthModifier[this.level], 0));
+        }
+
+        return modifierMap;
+    }
+
+    @Override
+    public String getUniqueIdentifier()
+    {
+        return Constants.Mod.MODID + ".upgrade.knockback";
+    }
+
+    @Override
+    public int getMaxTier()
+    {
+        return 5;
+    }
+
+    @Override
+    public int getCostOfUpgrade()
+    {
+        return costs[this.level];
+    }
+
+    @Override
+    public void writeToNBT(NBTTagCompound tag)
+    {
+        // EMPTY
+    }
+
+    @Override
+    public void readFromNBT(NBTTagCompound tag)
+    {
+        // EMPTY
+    }
+
+    @Override
+    public String getUnlocalizedName()
+    {
+        return tooltipBase + "knockback";
+    }
+}