Made it so that replaced chests from mimics keep their inventory and when broken will drop their inventory.

src/main/java/WayofTime/bloodmagic/item/block/ItemBlockMimic.java

@@ -59,6 +59,14 @@ public class ItemBlockMimic extends ItemBlock
 //            ItemStack replacedStack = new ItemStack(block, 1, block.getMetaFromState(iblockstate));
 
             NBTTagCompound tileTag = getTagFromTileEntity(tileReplaced);
+            if (tileReplaced != null)
+            {
+                NBTTagCompound voidTag = new NBTTagCompound();
+                voidTag.setInteger("x", pos.getX());
+                voidTag.setInteger("y", pos.getY());
+                voidTag.setInteger("z", pos.getZ());
+                tileReplaced.readFromNBT(voidTag);
+            }
 
             if (placeBlockAt(stack, player, world, pos, facing, hitX, hitY, hitZ, iblockstate1))
             {
@@ -71,6 +79,7 @@ public class ItemBlockMimic extends ItemBlock
                 {
                     TileMimic mimic = (TileMimic) tile;
                     mimic.metaOfReplacedBlock = block.getMetaFromState(iblockstate);
+                    mimic.tileTag = tileTag;
                     mimic.setInventorySlotContents(0, replacedStack);
                     mimic.refreshTileEntity();
 
@@ -81,6 +90,9 @@ public class ItemBlockMimic extends ItemBlock
                 }
 
                 return EnumActionResult.SUCCESS;
+            } else
+            {
+                tileReplaced.readFromNBT(tileTag);
             }
         }
 

src/main/java/WayofTime/bloodmagic/tile/TileMimic.java

@@ -6,6 +6,7 @@ import net.minecraft.block.Block;
 import net.minecraft.block.ITileEntityProvider;
 import net.minecraft.block.state.IBlockState;
 import net.minecraft.entity.player.EntityPlayer;
+import net.minecraft.inventory.IInventory;
 import net.minecraft.inventory.InventoryHelper;
 import net.minecraft.item.ItemBlock;
 import net.minecraft.item.ItemStack;
@@ -71,6 +72,10 @@ public class TileMimic extends TileInventory
 
     public void refreshTileEntity()
     {
+        if (mimicedTile != null)
+        {
+            dropMimicedTileInventory();
+        }
         mimicedTile = getTileFromStackWithTag(worldObj, pos, getStackInSlot(0), tileTag, metaOfReplacedBlock);
     }
 
@@ -174,6 +179,16 @@ public class TileMimic extends TileInventory
         {
             InventoryHelper.dropInventoryItems(getWorld(), getPos(), this);
         }
+
+        dropMimicedTileInventory();
+    }
+
+    public void dropMimicedTileInventory()
+    {
+        if (!worldObj.isRemote && mimicedTile instanceof IInventory)
+        {
+            InventoryHelper.dropInventoryItems(getWorld(), getPos(), (IInventory) mimicedTile);
+        }
     }
 
     @Override