BloodMagic/src/main/java/WayofTime/bloodmagic/util/handler/EventHandler.java

package WayofTime.bloodmagic.util.handler;

import WayofTime.bloodmagic.registry.ModBlocks;
import WayofTime.bloodmagic.registry.ModItems;
import net.minecraft.block.Block;
import net.minecraft.init.Items;
import net.minecraft.item.ItemStack;
import net.minecraftforge.event.entity.player.FillBucketEvent;
import net.minecraftforge.fml.common.eventhandler.Event;
import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;

public class EventHandler {

    @SubscribeEvent
    public void onBucketFill(FillBucketEvent event) {
        if (event.current.getItem() != Items.bucket)
            return;

        ItemStack result = null;

        Block block = event.world.getBlockState(event.target.getBlockPos()).getBlock();

        if (block != null && (block.equals(ModBlocks.lifeEssence)) && block.getMetaFromState(event.world.getBlockState(event.target.getBlockPos())) == 0) {
            event.world.setBlockToAir(event.target.getBlockPos());
            result = new ItemStack(ModItems.bucketEssence);
        }

        if (result == null)
            return;

        event.result = result;
        event.setResult(Event.Result.ALLOW);
    }
}