I need help with block scanning!

[WimpyLlama]

I am working on a 1.10.2 mod and I need help. NOTICE: I am new at modding!

What I am trying to do is create an item that tests if you are looking at a grass block when you right click with it. And if you are looking at a grass block a piece of cobblestone appears. And the item only has 64 uses. I have some code for the item that I got from a tutorial on a heart that heals you. I am trying to base my code on this but I can't figure out what to do. Please help!

 

package wimpyllama.wimprimstuff.items;

import java.util.List;

import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.util.ActionResult;
import net.minecraft.util.EnumHand;
import net.minecraft.util.ResourceLocation;
import net.minecraft.util.text.TextFormatting;
import net.minecraft.world.World;
import wimpyllama.wimprimstuff.Reference;
import wimpyllama.wimprimstuff.util.Utils;

public class ItemSifter extends Item{

	public ItemSifter(String unlocalizedName) {
		this.setUnlocalizedName(unlocalizedName);
		this.setRegistryName(new ResourceLocation(Reference.MODID, unlocalizedName));
	}
	
	@Override
	public ActionResult<ItemStack> onItemRightClick(ItemStack stack, World world, EntityPlayer player,
			EnumHand hand) {
		if(player.getHealth() < player.getMaxHealth()) {
			player.heal(4);
			int damageToBe = player.getHeldItem(hand).getItemDamage() + 1;
			if(damageToBe > 4) {
				player.getHeldItem(hand).stackSize--;
			} else {
				player.getHeldItem(hand).setItemDamage(player.getHeldItem(hand).getItemDamage() + 1);
			}
		}
		return super.onItemRightClick(stack, world, player, hand);
	}
	
}

[WimpyLlama]

As I said, I am new to modding. I don't understand what this is. And I don't want to update to 1.12.2 because most modpacks, including the one I am making, are for 1.10.2 so I just rather make it for 1.10.2 for now and maybe update it in the future.

[WimpyLlama]

Basically, if you could just tell me where to put the code and what it does, that would be great.

[WimpyLlama]

I thought you did. Whatever, just if you could help me that would be nice.

[WimpyLlama]

I don't understand what Item::rayTrace means. All I need is to create an if statement that tests if the player is looking at a grass block. if(blockAtPlayerCross == Blocks.GRASS) is what I'm trying to do but I don't know the real statement. I have looked on youtube and google and I can't find anything.

[WimpyLlama]

Never mind, I figured it out by opening mcreator and making the item in there then I copied some of the code and edited it to my liking.

[loordgek]

12 minutes ago, WimpyLlama said:

Never mind, I figured it out by opening mcreator and making the item in there then I copied some of the code and edited it to my liking.

face palm

 

DONT use that, learn java and code it properly

[WimpyLlama]

I am learning java. I don't use mcreator anymore but it is useful for learning how to do things if you look at the code. I am still coding my mod by myself I just used a bit of mcreators code.