I missed a few files...

src/main/java/WayofTime/bloodmagic/livingArmour/downgrade/LivingArmourUpgradeDigSlowdown.java

@@ -0,0 +1,78 @@
+package WayofTime.bloodmagic.livingArmour.downgrade;
+
+import java.util.HashMap;
+
+import net.minecraft.entity.player.EntityPlayer;
+import net.minecraft.nbt.NBTTagCompound;
+import net.minecraft.world.World;
+import WayofTime.bloodmagic.api.Constants;
+import WayofTime.bloodmagic.api.livingArmour.ILivingArmour;
+import WayofTime.bloodmagic.api.livingArmour.LivingArmourUpgrade;
+import WayofTime.bloodmagic.livingArmour.LivingArmour;
+
+public class LivingArmourUpgradeDigSlowdown extends LivingArmourUpgrade
+{
+    public static HashMap<ILivingArmour, Boolean> changeMap = new HashMap<ILivingArmour, Boolean>();
+
+    public static final int[] costs = new int[] { -10, -17, -28, -42, -60, -80, -100, -125, -160, -200 };
+
+    public static final double[] digSpeedModifier = new double[] { 0.9, 0.8, 0.7, 0.6, 0.55, 0.5, 0.4, 0.35, 0.3, 0.2 };
+
+    public static void hasDug(LivingArmour armour)
+    {
+        changeMap.put(armour, true);
+    }
+
+    public LivingArmourUpgradeDigSlowdown(int level)
+    {
+        super(level);
+    }
+
+    @Override
+    public double getMiningSpeedModifier(EntityPlayer player)
+    {
+        return digSpeedModifier[this.level];
+    }
+
+    @Override
+    public void onTick(World world, EntityPlayer player, ILivingArmour livingArmour)
+    {
+
+    }
+
+    @Override
+    public String getUniqueIdentifier()
+    {
+        return Constants.Mod.MODID + ".upgrade.digSlowdown";
+    }
+
+    @Override
+    public int getMaxTier()
+    {
+        return 10; // Set to here until I can add more upgrades to it.
+    }
+
+    @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 + "digSlowdown";
+    }
+}

src/main/java/WayofTime/bloodmagic/livingArmour/tracker/downgrade/StatTrackerDigSlowdown.java

@@ -0,0 +1,130 @@
+package WayofTime.bloodmagic.livingArmour.tracker.downgrade;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+
+import net.minecraft.entity.player.EntityPlayer;
+import net.minecraft.nbt.NBTTagCompound;
+import net.minecraft.world.World;
+import WayofTime.bloodmagic.api.Constants;
+import WayofTime.bloodmagic.api.livingArmour.LivingArmourUpgrade;
+import WayofTime.bloodmagic.api.livingArmour.StatTracker;
+import WayofTime.bloodmagic.livingArmour.LivingArmour;
+import WayofTime.bloodmagic.livingArmour.downgrade.LivingArmourUpgradeDigSlowdown;
+import WayofTime.bloodmagic.util.Utils;
+
+public class StatTrackerDigSlowdown extends StatTracker
+{
+    public int totalBlocksDug = 0;
+
+    public static HashMap<LivingArmour, Integer> changeMap = new HashMap<LivingArmour, Integer>();
+    public static int[] blocksRequired = new int[] { 64, 128, 250, 400, 700, 1200, 2000, 3500, 6000, 10000 };
+
+    public static void incrementCounter(LivingArmour armour)
+    {
+        changeMap.put(armour, changeMap.containsKey(armour) ? changeMap.get(armour) + 1 : 1);
+    }
+
+    @Override
+    public String getUniqueIdentifier()
+    {
+        return Constants.Mod.MODID + ".tracker.digSlowdown";
+    }
+
+    @Override
+    public void resetTracker()
+    {
+        this.totalBlocksDug = 0;
+    }
+
+    @Override
+    public void readFromNBT(NBTTagCompound tag)
+    {
+        totalBlocksDug = tag.getInteger(Constants.Mod.MODID + ".tracker.digSlowdown");
+    }
+
+    @Override
+    public void writeToNBT(NBTTagCompound tag)
+    {
+        tag.setInteger(Constants.Mod.MODID + ".tracker.digSlowdown", totalBlocksDug);
+    }
+
+    @Override
+    public boolean onTick(World world, EntityPlayer player, LivingArmour livingArmour)
+    {
+        if (changeMap.containsKey(livingArmour))
+        {
+            int change = Math.abs(changeMap.get(livingArmour));
+            if (change > 0)
+            {
+                totalBlocksDug += Math.abs(changeMap.get(livingArmour));
+
+                changeMap.put(livingArmour, 0);
+
+                this.markDirty();
+
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    @Override
+    public void onDeactivatedTick(World world, EntityPlayer player, LivingArmour livingArmour)
+    {
+        if (changeMap.containsKey(livingArmour))
+        {
+            changeMap.remove(livingArmour);
+        }
+    }
+
+    @Override
+    public List<LivingArmourUpgrade> getUpgrades()
+    {
+        List<LivingArmourUpgrade> upgradeList = new ArrayList<LivingArmourUpgrade>();
+
+        for (int i = 0; i < 10; i++)
+        {
+            if (totalBlocksDug >= blocksRequired[i])
+            {
+                upgradeList.add(new LivingArmourUpgradeDigSlowdown(i));
+            }
+        }
+
+        return upgradeList;
+    }
+
+    @Override
+    public double getProgress(LivingArmour livingArmour, int currentLevel)
+    {
+        return Utils.calculateStandardProgress(totalBlocksDug, blocksRequired, currentLevel);
+    }
+
+    @Override
+    public boolean providesUpgrade(String key)
+    {
+        return key.equals(Constants.Mod.MODID + ".upgrade.digSlowdown");
+    }
+
+    @Override
+    public void onArmourUpgradeAdded(LivingArmourUpgrade upgrade)
+    {
+        if (upgrade instanceof LivingArmourUpgradeDigSlowdown)
+        {
+            int level = upgrade.getUpgradeLevel();
+            if (level < blocksRequired.length)
+            {
+                totalBlocksDug = Math.max(totalBlocksDug, blocksRequired[level]);
+                this.markDirty();
+            }
+        }
+    }
+
+    @Override
+    public boolean isTrackerDowngrade()
+    {
+        return true;
+    }
+}