How to add custom trades to villagers in 1.10.2

[Da9L]

Hi. I'm trying to add some custom trades to villagers in 1.10.2. I've done it before in 1.7.10, but i noticed that since the IVillageTradeHandler interface is no longer present in the VillagerRegistry, I cannot do this the way i used to do it. The closest i can seem to find is the IVillageCreationHandler interface, but I'm getting a suspicion that this has nothing to do with trading, but more to do with Village World generation.  How would you do this in 1.10.2 ?

[Kokkie]

http://www.minecraftforge.net/forum/index.php?topic=1676.0

[hugo_the_dwarf]

Altho the way I mentioned in the topic you posted is to override or cancel the default GUI/trading and then open my own. It seems Da9L may be looking to just "add" to the default villager trading options.

 

I've managed to track a location down to "net.minecraftforge.fml.common.registry.VillagerRegistry.class" but other than that, I'm not sure "how" to just add to the default trading.

 

EDIT:

Oh wow re-reading that thread I posted in, I also gave the wrong suggestion of just stopping the default trading interface and using a custom one. Oops.

[grossik]

In my mod.

 

Trade List:

 

package cz.grossik.farmcraft2.village;

 

import java.util.Random;

 

import javax.annotation.Nonnull;

 

import net.minecraft.entity.passive.EntityVillager;

import net.minecraft.init.Items;

import net.minecraft.item.Item;

import net.minecraft.item.ItemStack;

import net.minecraft.village.MerchantRecipe;

import net.minecraft.village.MerchantRecipeList;

 

public class FC2VillagerTrades

{

public static ItemStack copyStackWithAmount(ItemStack stack, int amount)

{

if(stack==null)

return null;

ItemStack s2 = stack.copy();

s2.stackSize=amount;

return s2;

}

 

public static class SeedsForItemstack implements EntityVillager.ITradeList

{

public ItemStack buyingItem;

public EntityVillager.PriceInfo buyAmounts;

 

public SeedsForItemstack(@Nonnull ItemStack item, @Nonnull EntityVillager.PriceInfo buyAmounts)

{

this.buyingItem = item;

this.buyAmounts = buyAmounts;

}

 

@Override

public void modifyMerchantRecipeList(MerchantRecipeList recipeList, Random random)

{

recipeList.add(new MerchantRecipe(copyStackWithAmount(this.buyingItem, this.buyAmounts.getPrice(random)), Items.EMERALD));

}

}

 

public static class ItemstackForSeeds implements EntityVillager.ITradeList

{

public ItemStack sellingItem;

public EntityVillager.PriceInfo priceInfo;

 

public ItemstackForSeeds(Item par1Item, EntityVillager.PriceInfo priceInfo)

{

this.sellingItem = new ItemStack(par1Item);

this.priceInfo = priceInfo;

}

 

public ItemstackForSeeds(ItemStack stack, EntityVillager.PriceInfo priceInfo)

{

this.sellingItem = stack;

this.priceInfo = priceInfo;

}

 

@Override

public void modifyMerchantRecipeList(MerchantRecipeList recipeList, Random random)

{

int i = 1;

if(this.priceInfo != null)

i = this.priceInfo.getPrice(random);

ItemStack itemstack;

ItemStack itemstack1;

if(i < 0)

{

itemstack = new ItemStack(Items.WHEAT_SEEDS);

itemstack1 = copyStackWithAmount(sellingItem, -i);

} else

{

itemstack = new ItemStack(Items.WHEAT_SEEDS, i, 0);

itemstack1 = copyStackWithAmount(sellingItem, 1);

}

recipeList.add(new MerchantRecipe(itemstack, itemstack1));

}

}

}

 

 

and register:

 

VillagerRegistry.VillagerCareer career_fc2_farmer = new VillagerRegistry.VillagerCareer(villagerProfession_farmer, Main.MODID + ".farmer");
	career_fc2_farmer.addTrade(1, 
			new FC2VillagerTrades.ItemstackForSeeds(ItemHandler.BarleySeeds, new EntityVillager.PriceInfo(1, 2));