PrepareItemCraftEvent

I know that there are a lot of posts about this, but I still don't know how to resolve this:

Code:

package org.lucaforever.betterredstone.main;

import org.bukkit.Bukkit;
import org.bukkit.ChatColor;
import org.bukkit.Material;
import org.bukkit.event.inventory.PrepareItemCraftEvent;
import org.bukkit.inventory.ItemStack;
import org.bukkit.inventory.ShapedRecipe;
import org.bukkit.inventory.meta.ItemMeta;
import org.bukkit.plugin.java.JavaPlugin;

public class Main extends JavaPlugin
{
    @Override
    public void onEnable()
    {
        //energy block
        ItemStack energy_block = new ItemStack(Material.HOPPER);
        ItemMeta itemMeta_eb = energy_block.getItemMeta();

        itemMeta_eb.setDisplayName(ChatColor.RED + "Energy Block");

        energy_block.setItemMeta(itemMeta_eb);

        ShapedRecipe recipe_eb = new ShapedRecipe(energy_block);

        recipe_eb.shape("RRR", "RRR", "RRR");
        recipe_eb.setIngredient('R', Material.HOPPER);
        Bukkit.addRecipe(recipe_eb);
      
        //plane engine
        ItemStack plane_engine = new ItemStack(Material.DROPPER);
        ItemMeta itemMeta_pg = plane_engine.getItemMeta();

        itemMeta_pg.setDisplayName(ChatColor.RED + "Plane Engine");

        plane_engine.setItemMeta(itemMeta_pg);

        ShapedRecipe recipe_pg = new ShapedRecipe(plane_engine);

        recipe_pg.shape("RPR", "PRP", "RPR");
        PrepareItemCraftEvent.recipe_pg.('R', energy_block);
        recipe_pg.setIngredient('P', Material.PISTON_BASE);
        Bukkit.addRecipe(recipe_eb);
      
    } 
}

I am trying to make a recipe (plane engine) with the energy block, but I don't know how to do it. I saw that I need to use PrepareItemCraftEvent but, i can't understand how to do it. Thanks

 

If i am not wrong , when you make recipe for example a ShapedRecipe , you can use recipe#setIngridient('your char here', your custom itemstack).

 

ok, but i question, what do i put in the "your char here" thing? (like what char)

Edit: i just noticed what the meant, and no, you cant use set a custom ingredient, you can only put "Material.-"

 

Well the you can try to use the event you mentioned , and #getInventory() then #getMatrix(). Now loop through the matrix and check if the items used and the position on the grid matches what you want. Finally use #getInventory()#setResult(your itemstack here)

Edit: I don't know if this is the best way , but here you have a working example:

https://pastebin.com/Q03hWVNF

 

well i understand the code, but i dont get if this

Code:

if(matrix[0] != null && matrix[0].getType().equals(Material.TARGET)) {
            e.getInventory().setResult(new ItemStack(Material.ACACIA_FENCE_GATE));
        }

means that if the recipe is equal to a target block, it replaces it with a acacia fence gate?
im sorry, but im confuesd (and mods pls dont ban for bumping)

 

Well its quiet simple , i get the matrix or the crafting grid whatever you want to call it, then for example i check if the item in the 1rst position of the grid is a target block , could be whatever you want even a custom item, and then, if it is, just set the result of the crafting grid to whatever i want , in this case is just an example so i used acacia fence gates. Obviously you have to check if its null or it will throw a NPE, if you still confused we can hop in a discord session: xelatercero#7083