onBlockAct

@Override
public boolean onBlockActivated(World world, BlockPos pos, IBlockState state, EntityPlayer player, EnumHand hand, EnumFacing facing, float hitX, float hitY, float hitZ) {
      if (world.isRemote) {



          TileEntityPedastal_Magic te = getTE(world, pos);



          if(player.getHeldItem(hand).getItem() == ItemHandler.key  && player.getHeldItem(hand).getMetadata() == 0){


              if(!te.isLocked()){
                    te.setLocked(true);
                    player.sendMessage(new TextComponentTranslation(TextFormatting.AQUA + "[EssencePlus] Security> " + TextFormatting.DARK_RED + "This pedestal has been locked!"));
                }
                else {
                    player.sendMessage(new TextComponentTranslation(TextFormatting.AQUA + "[EssencePlus] Security> " + TextFormatting.DARK_GREEN + "This pedestal has been unlocked!"));
              te.setLocked(false);
                }
          }

          else{


          if (te.getStack().isEmpty()) {
              if(te.isLocked()){

                 player.sendMessage(new TextComponentTranslation(TextFormatting.AQUA + "[EssencePlus] " + TextFormatting.RED + "This pedestal is locked!"));


           }

           else{
              if (!player.getHeldItem(hand).isEmpty()) {
                  // There is no item in the pedestal and the player is holding an item. We move that item
                  // to the pedestal
                  te.setStack(player.getHeldItem(hand));
                  player.inventory.setInventorySlotContents(player.inventory.currentItem, ItemStack.EMPTY);
                  // Make sure the client knows about the changes in the player inventory

              }

          else if (!te.getStack().isEmpty()){
              if(te.isLocked()){

                 player.sendMessage(new TextComponentTranslation(TextFormatting.AQUA + "[EssencePlus] " + TextFormatting.RED + "This pedestal is locked!"));


           }
           else{
              // There is a stack in the pedestal. In this case we remove it and try to put it in the
              // players inventory if there is room
              ItemStack stack = te.getStack();

              if (!player.inventory.addItemStackToInventory(stack)) {
                  // Not possible. Throw item in the world
                  EntityItem entityItem = new EntityItem(world, pos.getX(), pos.getY()+1, pos.getZ(), stack);
                  world.spawnEntity(entityItem);
              }
              te.setStack(ItemStack.EMPTY);
          }

          }

          }

          }

          }

          }

      // Return true also on the client to make sure that MC knows we handled this and will not try to place
      // a block on the client
      return true;
  }