Custom Table Block Class

package net.stolenchristmas.mods.blocks;

import cpw.mods.fml.common.network.internal.FMLNetworkHandler;
import net.minecraft.block.BlockContainer;
import net.minecraft.block.material.Material;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.world.World;
import net.stolenchristmas.mods.stolenchristmas;
import net.stolenchristmas.mods.tileentity.TileEntityXmasTable;

public class XmasTable extends BlockContainer{

public XmasTable(Material material) {
        super(material);
        this.setHardness(2.0F);
        this.setResistance(10.0F);

        this.setCreativeTab(stolenchristmas.xmasTab);
    }

    public int getRenderType(){
        return -1;
    }

    public boolean isOpaqueCube(){
        return false;
    }

    public boolean renderAsNormalBlock(){
        return false;
    }

    @Override
    public TileEntity createNewTileEntity(World var1, int var2) {
        return new TileEntityXmasTable();
    }


    @Override
    public boolean onBlockActivated (World world, int x, int y, int z, EntityPlayer player, int side, float hitX, float hitY, float hitZ) {

        if (!player.isSneaking()) {
            player.openGui(stolenchristmas.instance, stolenchristmas.guiIDWorkSurface, world, x, y, z);
            return true;
        }else{
            return false;
        }
    }}