So I followed ScratchForFuns tutorials on a macerator and made my own and updated it for 1.7.10. I am trying to make it so say you put in Thermal Expansion copper you would still get copper dust. I figured it out for crafting with new ShapedOreRecipe() but cant figure it out for smelting style recipe. I tried using OreDictionary.getOres("oreCopper") but it gets a null pointer exception. Thanks in advance.

 

 

Here is my recipe class for my machine.

package com.robert.casualtech.manager;

import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Map.Entry;

import com.robert.casualtech.blocks.CasualTechBlocks;
import com.robert.casualtech.items.CasualTechItems;

import net.minecraft.block.Block;
import net.minecraft.init.Blocks;
import net.minecraft.init.Items;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.item.crafting.FurnaceRecipes;
import net.minecraftforge.oredict.OreDictionary;
import net.minecraftforge.oredict.ShapedOreRecipe;

public class OreGrinderManager {

private static final OreGrinderManager SMELTING_BASE = new OreGrinderManager();

@SuppressWarnings("rawtypes")
private Map smeltingList = new HashMap();

public static OreGrinderManager Grinding() {
	return SMELTING_BASE;
}

private OreGrinderManager() {
	this.addRecipe(Item.getItemFromBlock(CasualTechBlocks.oreCopper), new ItemStack(CasualTechItems.dustCopper));
	this.addRecipe(Item.getItemFromBlock(CasualTechBlocks.oreSilver), new ItemStack(CasualTechItems.dustSilver));
	this.addRecipe(Item.getItemFromBlock(CasualTechBlocks.oreTin), new ItemStack(CasualTechItems.dustTin));
	this.addRecipe(Item.getItemFromBlock(CasualTechBlocks.oreTantalum), new ItemStack(CasualTechItems.dustTantalum));
	//this.addRecipe(Item.getItemFromBlock(OreDictionary.getOres(""), new ItemStack(Items.redstone, 4));
	this.addRecipe(Item.getItemFromBlock(Blocks.lapis_ore), new ItemStack(Items.dye, 6));
	this.addRecipe(Item.getItemFromBlock(Blocks.iron_ore), new ItemStack(CasualTechItems.dustIron));
	this.addRecipe(Item.getItemFromBlock(Blocks.gold_ore), new ItemStack(CasualTechItems.dustGold));
	this.addRecipe(Item.getItemFromBlock(Blocks.diamond_ore), new ItemStack(Items.diamond));
	this.addRecipe(Item.getItemFromBlock(Blocks.coal_ore), new ItemStack(Items.coal));
	this.addRecipe(Item.getItemFromBlock(Blocks.emerald_ore), new ItemStack(Items.emerald));
	this.addRecipe(Item.getItemFromBlock(Blocks.quartz_ore), new ItemStack(Items.quartz));
}

public void addRecipe(Item item, ItemStack itemstack){
	this.addLists(item, itemstack);
}

public void addLists(Item item, ItemStack itemstack){
	this.putLists(new ItemStack(item, 1, 32767), itemstack);
}

@SuppressWarnings("unchecked")
public void putLists(ItemStack itemstack, ItemStack itemstack2){
	this.smeltingList.put(itemstack, itemstack2);
}

@SuppressWarnings("rawtypes")
public ItemStack getSmeltingResult(ItemStack itemstack) {
	Iterator iterator = this.smeltingList.entrySet().iterator();
	Entry entry;

	do {
		if (!iterator.hasNext()) {
			return null;
		}
		entry = (Entry) iterator.next();
	} while (!canBeSmelted(itemstack, (ItemStack) entry.getKey()));
	return (ItemStack) entry.getValue();
}

private boolean canBeSmelted(ItemStack itemstack, ItemStack itemstack2) {
	return itemstack2.getItem() == itemstack.getItem() && (itemstack2.getItemDamage() == 32767 || itemstack2.getItemDamage() == itemstack.getItemDamage());
}
}

I think getOres returns a list. You'll have to iterate through it and add a recipe for each ore.

You don't have to iterate through the list and add a recipe for each one. That's a bad idea.

 

Try iterating through the list and instead of checking if the item matches, check that it is in an ore dictionary entry.