ThaumicBases/src/main/java/tb/common/item/ItemPyrofluidBucket.java

package tb.common.item;

import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.init.Items;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.world.World;
import net.minecraftforge.common.util.ForgeDirection;
import tb.init.TBBlocks;

public class ItemPyrofluidBucket extends Item {

    public ItemPyrofluidBucket() {
        super();
        this.setMaxStackSize(1);
    }

    public boolean onItemUse(
            ItemStack stk,
            EntityPlayer player,
            World w,
            int x,
            int y,
            int z,
            int side,
            float vecX,
            float vecY,
            float vecZ) {
        ForgeDirection dir = ForgeDirection.VALID_DIRECTIONS[side];
        w.setBlock(x + dir.offsetX, y + dir.offsetY, z + dir.offsetZ, TBBlocks.pyrofluid, 0, 3);
        player.inventory.setInventorySlotContents(player.inventory.currentItem, new ItemStack(Items.bucket, 1, 0));
        return true;
    }
}