Solved Custom crafting recipes help

That did the trick. Except that didn't fix the problem, I can still create mega slimeballs with normal emerald blocks instead of "Shiny emerald block"s.

 

@iLiveorLose
This is because you are still using the code that was posted. Although you don't have to re-write your code now (although I do recommend that you should later), you should read every single line that is written, and debug each line. Print out messages saying what each value is equal to, that way you can figure out what is not working correctly.

 

After I've tried debugging a lot, it still isn't working. I tried shrecipe.getResult().getData() and also emeraldblock.getData() for the setIngredient but it didn't work no matter what I tried.\

EDIT: by any chance, does it make a difference if I do Bukkit.getServer().addRecipe(sbrecipe) AFTER I make sure it has a certain Item Meta?

 

@iLiveorLose
Yes, that is most likely it. The event is only triggered when the crafted recipe exist. In essence, adding the recipe inside the event is simular to saying "Add a recipe if the recipe has been added" Move that line to the onEnable.

 

Ok, after I moved those lines, the sbrecipe and shrecipe are underlined red, and I tried moving the recipes outside of the event method and the whole thing was underlined, so I moved it into it's own method, and then everything that had the words sbrecipe and shrecipe were underlined. I feel like I should know how to fix this, but I'm really clueless as to how this could be fixed.

 

Read that link I posted.

 

Not knowing how to declare variables / using variable scope properly has nothing to do with beeing "rusty"..
This also counts for the last comment you wrote.

For this you just need very very basic java, like the stuff you learn in the first couple of chapters in beginner tutorials.

 

@Zombie_Striker
I tried what you told me to do with the ItemStack instances, and it worked, but now with the ShapedRecipe's outside of the method and with the Bukkit.getServer().addRecipes() in the onEnable, the crafting recipes don't work anymore. None of them. Please help.

@mcdorli
@Lordloss
I knew how to do that, but for some reason when I tried that it didn't work, then I tried it again, and bingo. Sorry if I looked like an idiot and made you waste your time correcting my error.

 

@iLiveorLose
At this point, it seems I should explain what you want to do.

1. What you want to do is create ItemStack fields which hold the instance of each Itemstack you want. This is only the instance, and should not be edited at this point. Since they are fields, when the class if first created (I.e before onEnable is called). We want this to happen because we want to be able to reference these itemstacks in all other methods in the class.
   
2. After the fields are created, onEnabled is called. That is when you want to now edit the values of the itemstack, meaning you would set the displayname, type,ect. in the onEnabled. We do this because you cannot set values of objects outside of method blocks.
   
3. After you have set all the values of the itemstack, you should then add the recipe. This can be done in the onEnabled, but after you set all the values for the itemstacks. We want to add the recipe after we set the itemstack's values because we want to have the "result" of crafting the item to have all the data specified before.

Please understand the above, and try having the code match what is described above. After that, post the code.

 

@Zombie_Striker
Still can't craft anything, heres the code:

Code:

package me.liveorlose.megaslime;

import java.util.Arrays;

import org.bukkit.Bukkit;
import org.bukkit.ChatColor;
import org.bukkit.Material;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.enchantments.Enchantment;
import org.bukkit.entity.EntityType;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.inventory.PrepareItemCraftEvent;
import org.bukkit.inventory.CraftingInventory;
import org.bukkit.inventory.Inventory;
import org.bukkit.inventory.ItemStack;
import org.bukkit.inventory.ShapedRecipe;
import org.bukkit.inventory.meta.ItemMeta;
import org.bukkit.plugin.java.JavaPlugin;

public class Test extends JavaPlugin implements Listener {

    private ItemStack emeraldblock = new ItemStack(Material.EMERALD_BLOCK, 1);
    private ItemStack slimeball = new ItemStack(Material.SLIME_BALL, 1);

    private ShapedRecipe shrecipe = new ShapedRecipe(emeraldblock);
    private ShapedRecipe sbrecipe = new ShapedRecipe(slimeball);

    public void onEnable() {
        Bukkit.getServer().getPluginManager().registerEvents(this, this);
        emeraldblock.addUnsafeEnchantment(Enchantment.DURABILITY, 10);

        ItemMeta emeraldmeta = emeraldblock.getItemMeta();
        emeraldmeta.setDisplayName(ChatColor.GREEN.toString() + ChatColor.BOLD
                + "Shiny emerald block");
        emeraldmeta.setLore(Arrays.asList(ChatColor.GREEN
                + "This emerald block", ChatColor.GREEN + "is enchanted with",
                ChatColor.GREEN + "an odd " + ChatColor.GOLD.toString()
                        + ChatColor.BOLD + "presence" + ChatColor.GREEN + "."));
        emeraldblock.setItemMeta(emeraldmeta);
        /**********/
        slimeball.addUnsafeEnchantment(Enchantment.DURABILITY, 10);
        ItemMeta slimeballmeta = slimeball.getItemMeta();
        slimeballmeta.setDisplayName(ChatColor.GREEN.toString()
                + ChatColor.BOLD + "Mega slimeball");
        slimeballmeta.setLore(Arrays.asList(ChatColor.GREEN
                + "This mega slimeball",
                ChatColor.GREEN + "came directly from",
                ChatColor.GREEN + "the " + ChatColor.GREEN.toString()
                        + ChatColor.BOLD + ChatColor.UNDERLINE + "Slime King"
                        + ChatColor.RESET.toString() + ChatColor.GREEN
                        + " itself."));
        slimeball.setItemMeta(slimeballmeta);
       
        Bukkit.getServer().addRecipe(shrecipe);
        Bukkit.getServer().addRecipe(sbrecipe);
    }

    @SuppressWarnings({ "deprecation" })
    @EventHandler
    public void onPrepareCraft(PrepareItemCraftEvent e) {
        shrecipe.shape("@@@", "@X@", "@@@");
        shrecipe.setIngredient('@', Material.MONSTER_EGG,
                EntityType.SLIME.getTypeId());
        shrecipe.setIngredient('X', Material.EMERALD_BLOCK);
        //
        sbrecipe.shape("EEE", "ESE", "EEE");
        sbrecipe.setIngredient('S', Material.SLIME_BALL);
        sbrecipe.setIngredient('E', shrecipe.getResult().getData());

        if (e.isRepair() || !e.getRecipe().equals(sbrecipe))
            return;
        CraftingInventory inv = e.getInventory();
        for (ItemStack item : inv.getMatrix()) {
            if (!item
                    .getItemMeta()
                    .getDisplayName()
                    .equals(ChatColor.GREEN.toString() + ChatColor.BOLD
                            + "Shiny emerald block")) {
                return;
            }
            inv.setResult(slimeball);
        }
    }

    public boolean onCommand(CommandSender sender, Command cmd, String label,
            String[] args) {
        if (cmd.getName().equalsIgnoreCase("thisis")) {
            Player p = (Player) sender;
            Inventory pi = p.getInventory();
            pi.addItem(emeraldblock);
        }
        return true;
    }
}

 

You have to set these values after you set all the values for the itemstack. Right now, you are creating a recipe for base game emerald blocsk and slime blocks (without any displaynames or lores.)

It should look like the following:

 

Code:

package me.liveorlose.megaslime;

import java.util.Arrays;

import org.bukkit.Bukkit;
import org.bukkit.ChatColor;
import org.bukkit.Material;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.enchantments.Enchantment;
import org.bukkit.entity.EntityType;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.inventory.PrepareItemCraftEvent;
import org.bukkit.inventory.CraftingInventory;
import org.bukkit.inventory.Inventory;
import org.bukkit.inventory.ItemStack;
import org.bukkit.inventory.ShapedRecipe;
import org.bukkit.inventory.meta.ItemMeta;
import org.bukkit.plugin.java.JavaPlugin;

public class Test extends JavaPlugin implements Listener {

    private ItemStack emeraldblock = new ItemStack(Material.EMERALD_BLOCK, 1);
    private ItemStack slimeball = new ItemStack(Material.SLIME_BALL, 1);

    private ShapedRecipe shrecipe;
    private ShapedRecipe sbrecipe;

    public void onEnable() {
        Bukkit.getServer().getPluginManager().registerEvents(this, this);
        emeraldblock.addUnsafeEnchantment(Enchantment.DURABILITY, 10);

        ItemMeta emeraldmeta = emeraldblock.getItemMeta();
        emeraldmeta.setDisplayName(ChatColor.GREEN.toString() + ChatColor.BOLD
                + "Shiny emerald block");
        emeraldmeta.setLore(Arrays.asList(ChatColor.GREEN
                + "This emerald block", ChatColor.GREEN + "is enchanted with",
                ChatColor.GREEN + "an odd " + ChatColor.GOLD.toString()
                        + ChatColor.BOLD + "presence" + ChatColor.GREEN + "."));
        emeraldblock.setItemMeta(emeraldmeta);
        /**********/
        slimeball.addUnsafeEnchantment(Enchantment.DURABILITY, 10);
        ItemMeta slimeballmeta = slimeball.getItemMeta();
        slimeballmeta.setDisplayName(ChatColor.GREEN.toString()
                + ChatColor.BOLD + "Mega slimeball");
        slimeballmeta.setLore(Arrays.asList(ChatColor.GREEN
                + "This mega slimeball",
                ChatColor.GREEN + "came directly from",
                ChatColor.GREEN + "the " + ChatColor.GREEN.toString()
                        + ChatColor.BOLD + ChatColor.UNDERLINE + "Slime King"
                        + ChatColor.RESET.toString() + ChatColor.GREEN
                        + " itself."));
        slimeball.setItemMeta(slimeballmeta);
       
        shrecipe = new ShapedRecipe(emeraldblock);

        sbrecipe = new ShapedRecipe(slimeball);
       
        Bukkit.getServer().addRecipe(shrecipe);
        Bukkit.getServer().addRecipe(sbrecipe);
    }

    @SuppressWarnings({ "deprecation" })
    @EventHandler
    public void onPrepareCraft(PrepareItemCraftEvent e) {
        shrecipe.shape("@@@", "@X@", "@@@");
        shrecipe.setIngredient('@', Material.MONSTER_EGG,
                EntityType.SLIME.getTypeId());
        shrecipe.setIngredient('X', Material.EMERALD_BLOCK);
        //
        sbrecipe.shape("EEE", "ESE", "EEE");
        sbrecipe.setIngredient('S', Material.SLIME_BALL);
        sbrecipe.setIngredient('E', shrecipe.getResult().getData());

        if (e.isRepair() || !e.getRecipe().equals(sbrecipe))
            return;
        CraftingInventory inv = e.getInventory();
        for (ItemStack item : inv.getMatrix()) {
            if (!item
                    .getItemMeta()
                    .getDisplayName()
                    .equals(ChatColor.GREEN.toString() + ChatColor.BOLD
                            + "Shiny emerald block")) {
                return;
            }
            inv.setResult(slimeball);
        }
    }

    public boolean onCommand(CommandSender sender, Command cmd, String label,
            String[] args) {
        if (cmd.getName().equalsIgnoreCase("thisis")) {
            Player p = (Player) sender;
            Inventory pi = p.getInventory();
            pi.addItem(emeraldblock);
        }
        return true;
    }
}

Still doesn't work, nothing can be crafted.

 

I found this video helpful even though I don't understand what he is saying. It should give you an idea of how to craft items with special items on them like displayname, lore, enchantment, custom items, etc.....

 

Thank you so much, I think you fixed my problem. The only problem is that (not because of you) my plugin won't load because it says "Plugin already initialized" and it is caused by line 17 of my MegaSlime (main) class.

MegaSlime:

Code:

package me.liveorlose.megaslime;

import java.util.Arrays;

import org.bukkit.Bukkit;
import org.bukkit.ChatColor;
import org.bukkit.Material;
import org.bukkit.enchantments.Enchantment;
import org.bukkit.entity.EntityType;
import org.bukkit.inventory.ItemStack;
import org.bukkit.inventory.ShapedRecipe;
import org.bukkit.inventory.meta.ItemMeta;
import org.bukkit.plugin.java.JavaPlugin;

public class MegaSlime extends JavaPlugin { // Line 17. This is where the error is caused.

    public static ItemStack emeraldblock = new ItemStack(
            Material.EMERALD_BLOCK, 1);
    {
        emeraldblock.addUnsafeEnchantment(Enchantment.DURABILITY, 10);
        ItemMeta emeraldmeta = emeraldblock.getItemMeta();
        emeraldmeta.setDisplayName(ChatColor.GREEN.toString() + ChatColor.BOLD
                + "Shiny emerald block");
        emeraldmeta.setLore(Arrays.asList(ChatColor.GREEN
                + "This emerald block", ChatColor.GREEN + "is enchanted with",
                ChatColor.GREEN + "an odd " + ChatColor.GOLD.toString()
                        + ChatColor.BOLD + "presence" + ChatColor.GREEN + "."));
        emeraldblock.setItemMeta(emeraldmeta);
    }

    public static ItemStack slimeball = new ItemStack(Material.SLIME_BALL, 1);
    {
        slimeball.addUnsafeEnchantment(Enchantment.DURABILITY, 10);
        ItemMeta slimeballmeta = slimeball.getItemMeta();
        slimeballmeta.setDisplayName(ChatColor.GREEN.toString()
                + ChatColor.BOLD + "Mega slimeball");
        slimeballmeta.setLore(Arrays.asList(ChatColor.GREEN
                + "This mega slimeball",
                ChatColor.GREEN + "came directly from",
                ChatColor.GREEN + "the " + ChatColor.GREEN.toString()
                        + ChatColor.BOLD + ChatColor.UNDERLINE + "Slime King"
                        + ChatColor.RESET.toString() + ChatColor.GREEN
                        + " itself."));
        slimeball.setItemMeta(slimeballmeta);
    }

    @SuppressWarnings("deprecation")
    public static ItemStack slimeEgg = new ItemStack(Material.MONSTER_EGG, 1,
            EntityType.SLIME.getTypeId());
    {
        slimeEgg.addUnsafeEnchantment(Enchantment.DURABILITY, 10);
        ItemMeta slimeEggMeta = slimeEgg.getItemMeta();
        slimeEggMeta.setDisplayName(ChatColor.AQUA.toString() + ChatColor.BOLD
                + ChatColor.MAGIC + "|||" + ChatColor.GREEN.toString()
                + ChatColor.BOLD + ChatColor.UNDERLINE + "Slime King Spawn Egg"
                + ChatColor.AQUA.toString() + ChatColor.BOLD + ChatColor.MAGIC
                + "|||");
        slimeEggMeta.setLore(Arrays.asList(ChatColor.GOLD.toString()
                + ChatColor.BOLD + "This eggs contains a very",
                ChatColor.GOLD.toString() + ChatColor.BOLD
                        + "strong aura of power.", ChatColor.AQUA
                        + "Right click to summon Slime King Boss."));
        slimeEgg.setItemMeta(slimeEggMeta);
    }

    public static ItemStack diamondBlock = new ItemStack(
            Material.DIAMOND_BLOCK, 1);
    {
        diamondBlock.addUnsafeEnchantment(Enchantment.DURABILITY, 10);
        ItemMeta diamondMeta = diamondBlock.getItemMeta();
        diamondMeta.setDisplayName(ChatColor.RED.toString() + ChatColor.BOLD
                + "Shiny diamond block");
        diamondMeta.setLore(Arrays.asList(ChatColor.RED + "This diamond block",
                ChatColor.RED + "is enchanted with", ChatColor.RED + "an odd "
                        + ChatColor.GOLD.toString() + ChatColor.BOLD
                        + "presence" + ChatColor.RESET.toString()
                        + ChatColor.RED + "."));
        diamondBlock.setItemMeta(diamondMeta);
    }

    public static ItemStack cream = new ItemStack(Material.MAGMA_CREAM, 1);
    {
        cream.addUnsafeEnchantment(Enchantment.DURABILITY, 10);
        ItemMeta creamMeta = cream.getItemMeta();
        creamMeta.setDisplayName(ChatColor.RED.toString() + ChatColor.BOLD
                + "Mega magma cream");
        creamMeta.setLore(Arrays.asList(ChatColor.RED + "This mega cream",
                ChatColor.RED + "came directly from",
                ChatColor.RED + "the " + ChatColor.RED.toString()
                        + ChatColor.BOLD + ChatColor.UNDERLINE + "Magma Lord"
                        + ChatColor.RESET.toString() + ChatColor.RED
                        + " itself."));
        cream.setItemMeta(creamMeta);
    }

    @SuppressWarnings("deprecation")
    public static ItemStack cubeEgg = new ItemStack(Material.MONSTER_EGG, 1,
            EntityType.MAGMA_CUBE.getTypeId());
    {
        cubeEgg.addUnsafeEnchantment(Enchantment.DURABILITY, 10);
        ItemMeta cubeMeta = cubeEgg.getItemMeta();
        cubeMeta.setDisplayName(ChatColor.AQUA.toString() + ChatColor.BOLD
                + ChatColor.MAGIC + "|||" + ChatColor.RED.toString()
                + ChatColor.BOLD + ChatColor.UNDERLINE + "Magma Lord Spawn Egg"
                + ChatColor.AQUA.toString() + ChatColor.BOLD + ChatColor.MAGIC
                + "|||");
        cubeMeta.setLore(Arrays.asList(ChatColor.GOLD.toString()
                + ChatColor.BOLD + "This eggs contains an extemely",
                ChatColor.GOLD.toString() + ChatColor.BOLD
                        + "strong aura of ruthless power.", ChatColor.AQUA
                        + "Right click to summon Magma Lord Boss."));
        cubeEgg.setItemMeta(cubeMeta);
    }

    public void onEnable() {
        getServer().addRecipe(shrecipe);
        getServer().addRecipe(sbrecipe);
        getServer().addRecipe(serecipe);
        getServer().addRecipe(drecipe);
        getServer().addRecipe(crrecipe);
        getServer().addRecipe(merecipe);
        Bukkit.getServer().getPluginManager().registerEvents(new SlimeListener(null), this);
    }
   
    /* Slime King recipes */
    @SuppressWarnings("deprecation")
    ShapedRecipe shrecipe = new ShapedRecipe(emeraldblock)
            .shape("@@@", "@X@", "@@@")
            .setIngredient('@', Material.MONSTER_EGG,
                    EntityType.SLIME.getTypeId())
            .setIngredient('X', Material.EMERALD_BLOCK);

    ShapedRecipe sbrecipe = new ShapedRecipe(slimeball)
            .shape("EEE", "ESE", "EEE")
            .setIngredient('E', Material.EMERALD_BLOCK)
            .setIngredient('S', Material.SLIME_BALL);

    @SuppressWarnings("deprecation")
    ShapedRecipe serecipe = new ShapedRecipe(slimeEgg)
            .shape("MMM", "MGM", "MMM")
            .setIngredient('M', Material.SLIME_BALL)
            .setIngredient('S', Material.MONSTER_EGG,
                    EntityType.SLIME.getTypeId());
    /* Magma Lord recipes */

    @SuppressWarnings("deprecation")
    ShapedRecipe drecipe = new ShapedRecipe(diamondBlock)
            .shape("MMM", "MDM", "MMM")
            .setIngredient('M', Material.MONSTER_EGG,
                    EntityType.MAGMA_CUBE.getTypeId())
            .setIngredient('D', Material.DIAMOND_BLOCK);

    ShapedRecipe crrecipe = new ShapedRecipe(cream).shape("III", "ICI", "III")
            .setIngredient('C', Material.MAGMA_CREAM)
            .setIngredient('I', Material.DIAMOND_BLOCK);

    @SuppressWarnings("deprecation")
    ShapedRecipe merecipe = new ShapedRecipe(cubeEgg)
            .shape("BBB", "BAB", "BBB")
            .setIngredient('A', Material.MONSTER_EGG,
                    EntityType.MAGMA_CUBE.getTypeId())
            .setIngredient('B', Material.MAGMA_CREAM);
}

SlimeListener:

Code:

package me.liveorlose.megaslime;

import org.bukkit.Bukkit;
import org.bukkit.ChatColor;
import org.bukkit.Material;
import org.bukkit.enchantments.Enchantment;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.block.Action;
import org.bukkit.event.inventory.PrepareItemCraftEvent;
import org.bukkit.event.player.PlayerInteractEvent;
import org.bukkit.inventory.ItemStack;

import com.sk89q.worldguard.bukkit.WorldGuardPlugin;

public class SlimeListener implements Listener {

    private MegaSlime plugin;

    public SlimeListener(MegaSlime plugin) {
        this.plugin = plugin;
    }

    public void onEnable() {
    }

    @EventHandler
    public void onPrepare(PrepareItemCraftEvent e) {
        if (e.isRepair()) {
            e.getInventory().setResult(new ItemStack(Material.AIR, 1));
        }
        if((e.getInventory().getResult() != null) && (e.getInventory().getResult().equals(plugin.sbrecipe))){
            if((e.getInventory().getItem(1) != null) && (e.getInventory().getItem(1).hasItemMeta()) && (e.getInventory().getItem(1).getItemMeta().hasEnchant(Enchantment.DURABILITY)) && (e.getInventory().getItem(1).getItemMeta().getEnchantLevel(Enchantment.DURABILITY) == 4) && (e.getInventory().getItem(1).hasItemMeta()) 
                    && (e.getInventory().getItem(2) != null) && (e.getInventory().getItem(2).hasItemMeta()) && (e.getInventory().getItem(2).getItemMeta().hasEnchant(Enchantment.DURABILITY)) && (e.getInventory().getItem(2).getItemMeta().getEnchantLevel(Enchantment.DURABILITY) == 4) && (e.getInventory().getItem(2).hasItemMeta())
                    && (e.getInventory().getItem(3) != null) && (e.getInventory().getItem(3).hasItemMeta()) && (e.getInventory().getItem(3).getItemMeta().hasEnchant(Enchantment.DURABILITY)) && (e.getInventory().getItem(3).getItemMeta().getEnchantLevel(Enchantment.DURABILITY) == 4) && (e.getInventory().getItem(3).hasItemMeta())
                    && (e.getInventory().getItem(4) != null) && (e.getInventory().getItem(4).hasItemMeta()) && (e.getInventory().getItem(4).getItemMeta().hasEnchant(Enchantment.DURABILITY)) && (e.getInventory().getItem(4).getItemMeta().getEnchantLevel(Enchantment.DURABILITY) == 4) && (e.getInventory().getItem(4).hasItemMeta())
                    && (e.getInventory().getItem(6) != null) && (e.getInventory().getItem(6).hasItemMeta()) && (e.getInventory().getItem(6).getItemMeta().hasEnchant(Enchantment.DURABILITY)) && (e.getInventory().getItem(6).getItemMeta().getEnchantLevel(Enchantment.DURABILITY) == 4) && (e.getInventory().getItem(6).hasItemMeta())
                    && (e.getInventory().getItem(7) != null) && (e.getInventory().getItem(7).hasItemMeta()) && (e.getInventory().getItem(7).getItemMeta().hasEnchant(Enchantment.DURABILITY)) && (e.getInventory().getItem(7).getItemMeta().getEnchantLevel(Enchantment.DURABILITY) == 4) && (e.getInventory().getItem(7).hasItemMeta())
                    && (e.getInventory().getItem(8) != null) && (e.getInventory().getItem(8).hasItemMeta()) && (e.getInventory().getItem(8).getItemMeta().hasEnchant(Enchantment.DURABILITY)) && (e.getInventory().getItem(8).getItemMeta().getEnchantLevel(Enchantment.DURABILITY) == 4) && (e.getInventory().getItem(8).hasItemMeta())
                    && (e.getInventory().getItem(9) != null) && (e.getInventory().getItem(9).hasItemMeta()) && (e.getInventory().getItem(9).getItemMeta().hasEnchant(Enchantment.DURABILITY)) && (e.getInventory().getItem(9).getItemMeta().getEnchantLevel(Enchantment.DURABILITY) == 4) && (e.getInventory().getItem(9).hasItemMeta())
                    ){
            }
        }
        if((e.getInventory().getResult() != null) && (e.getInventory().getResult().equals(plugin.serecipe))){
            if((e.getInventory().getItem(1) != null) && (e.getInventory().getItem(1).hasItemMeta()) && (e.getInventory().getItem(1).getItemMeta().hasEnchant(Enchantment.DURABILITY)) && (e.getInventory().getItem(1).getItemMeta().getEnchantLevel(Enchantment.DURABILITY) == 4) && (e.getInventory().getItem(1).hasItemMeta()) 
                    && (e.getInventory().getItem(2) != null) && (e.getInventory().getItem(2).hasItemMeta()) && (e.getInventory().getItem(2).getItemMeta().hasEnchant(Enchantment.DURABILITY)) && (e.getInventory().getItem(2).getItemMeta().getEnchantLevel(Enchantment.DURABILITY) == 4) && (e.getInventory().getItem(2).hasItemMeta())
                    && (e.getInventory().getItem(3) != null) && (e.getInventory().getItem(3).hasItemMeta()) && (e.getInventory().getItem(3).getItemMeta().hasEnchant(Enchantment.DURABILITY)) && (e.getInventory().getItem(3).getItemMeta().getEnchantLevel(Enchantment.DURABILITY) == 4) && (e.getInventory().getItem(3).hasItemMeta())
                    && (e.getInventory().getItem(4) != null) && (e.getInventory().getItem(4).hasItemMeta()) && (e.getInventory().getItem(4).getItemMeta().hasEnchant(Enchantment.DURABILITY)) && (e.getInventory().getItem(4).getItemMeta().getEnchantLevel(Enchantment.DURABILITY) == 4) && (e.getInventory().getItem(4).hasItemMeta())
                    && (e.getInventory().getItem(6) != null) && (e.getInventory().getItem(6).hasItemMeta()) && (e.getInventory().getItem(6).getItemMeta().hasEnchant(Enchantment.DURABILITY)) && (e.getInventory().getItem(6).getItemMeta().getEnchantLevel(Enchantment.DURABILITY) == 4) && (e.getInventory().getItem(6).hasItemMeta())
                    && (e.getInventory().getItem(7) != null) && (e.getInventory().getItem(7).hasItemMeta()) && (e.getInventory().getItem(7).getItemMeta().hasEnchant(Enchantment.DURABILITY)) && (e.getInventory().getItem(7).getItemMeta().getEnchantLevel(Enchantment.DURABILITY) == 4) && (e.getInventory().getItem(7).hasItemMeta())
                    && (e.getInventory().getItem(8) != null) && (e.getInventory().getItem(8).hasItemMeta()) && (e.getInventory().getItem(8).getItemMeta().hasEnchant(Enchantment.DURABILITY)) && (e.getInventory().getItem(8).getItemMeta().getEnchantLevel(Enchantment.DURABILITY) == 4) && (e.getInventory().getItem(8).hasItemMeta())
                    && (e.getInventory().getItem(9) != null) && (e.getInventory().getItem(9).hasItemMeta()) && (e.getInventory().getItem(9).getItemMeta().hasEnchant(Enchantment.DURABILITY)) && (e.getInventory().getItem(9).getItemMeta().getEnchantLevel(Enchantment.DURABILITY) == 4) && (e.getInventory().getItem(9).hasItemMeta())
                    ){
            }
        }
    }

    @SuppressWarnings("static-access")
    @EventHandler
    public void playerInteract(PlayerInteractEvent e) {
        if (e.getPlayer().getInventory().getItemInHand().getType()
                .equals(plugin.slimeEgg)) {
            if (e.getAction().equals(Action.RIGHT_CLICK_BLOCK)) {
                WorldGuardPlugin wg = (WorldGuardPlugin) Bukkit.getServer()
                        .getPluginManager().getPlugin("WorldGuard");
                if (wg.canBuild(e.getPlayer(), e.getPlayer().getLocation())) {
                    // do something if player can build
                } else {
                    // do something else if player can't build
                    e.setCancelled(true);
                    e.getPlayer()
                            .sendMessage(
                                    ChatColor.RED
                                            + "You can not summon this boss in this area.");
                }
            }
        } else if (e.getPlayer().getInventory().getItemInHand().getType()
                .equals(plugin.cubeEgg)) {
            if (e.getAction().equals(Action.RIGHT_CLICK_BLOCK)) {
                WorldGuardPlugin wg = (WorldGuardPlugin) Bukkit.getServer()
                        .getPluginManager().getPlugin("WorldGuard");
                if (wg.canBuild(e.getPlayer(), e.getPlayer().getLocation())) {
                    // do something if player can build
                } else {
                    // do something else if player can't build
                    e.setCancelled(true);
                    e.getPlayer()
                            .sendMessage(
                                    ChatColor.RED
                                            + "You can not summon this boss in this area.");
                }
            }
        }
    }
}

@Zombie_Striker
Do you know anything about this?

Thank you both.

 

Rememver, there can be only one class that extends Java plugin.That means you cant have other classes extends Java plugin, and you can use "new (Class that extends JavaPlugin)".

 

Only MegaSlime extends JavaPlugin...

 

Dou you do new megaSlime() anywhere in your plugin?

 

No.

 

Then check if you have 2 different versions of this plugin in your plugins folder.

 

Nope only 1.

 

Can you show us all the classes from the plugin?

 

I did. Scroll up. The one that extends javaplugin and the listener.

 

@mcdorli
@Zombie_Striker
Never mind, turns out that I'm an idiot. I was trying to load it through plugman when it was already loaded. The error message was that I didn't use the symbol in the crafting recipe, which is true, because when I copied and pasted my original recipe and changed the symbols and stuff, I forgot to change 1 for the slimeball. But now, I can still craft using normal emerald blocks, which I think the problem is with how I register events.

Registered events with:

Code:

Bukkit.getServer().getPluginManager().registerEvents(new SlimeListener(null), this);

That's the only way it would let me register the events (besides putting "this" inside of new SlimeListener(), which didn't work either).

Here is my Listener class:

Code:

package me.liveorlose.megaslime;

import org.bukkit.Bukkit;
import org.bukkit.ChatColor;
import org.bukkit.Material;
import org.bukkit.enchantments.Enchantment;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.block.Action;
import org.bukkit.event.inventory.PrepareItemCraftEvent;
import org.bukkit.event.player.PlayerInteractEvent;
import org.bukkit.inventory.ItemStack;

import com.sk89q.worldguard.bukkit.WorldGuardPlugin;

public class SlimeListener implements Listener {

    private MegaSlime plugin;

    public SlimeListener(MegaSlime plugin) {
        this.plugin = plugin;
    }

    public void onEnable() {
    }

    @EventHandler
    public void onPrepare(PrepareItemCraftEvent e) {
        if (e.isRepair()) {
            e.getInventory().setResult(new ItemStack(Material.AIR, 1));
        }
        if((e.getInventory().getResult() != null) && (e.getInventory().getResult().equals(plugin.sbrecipe))){
            if((e.getInventory().getItem(1) != null) && (e.getInventory().getItem(1).hasItemMeta()) && (e.getInventory().getItem(1).getItemMeta().hasEnchant(Enchantment.DURABILITY)) && (e.getInventory().getItem(1).getItemMeta().getEnchantLevel(Enchantment.DURABILITY) == 4) && (e.getInventory().getItem(1).hasItemMeta())
                    && (e.getInventory().getItem(2) != null) && (e.getInventory().getItem(2).hasItemMeta()) && (e.getInventory().getItem(2).getItemMeta().hasEnchant(Enchantment.DURABILITY)) && (e.getInventory().getItem(2).getItemMeta().getEnchantLevel(Enchantment.DURABILITY) == 4) && (e.getInventory().getItem(2).hasItemMeta())
                    && (e.getInventory().getItem(3) != null) && (e.getInventory().getItem(3).hasItemMeta()) && (e.getInventory().getItem(3).getItemMeta().hasEnchant(Enchantment.DURABILITY)) && (e.getInventory().getItem(3).getItemMeta().getEnchantLevel(Enchantment.DURABILITY) == 4) && (e.getInventory().getItem(3).hasItemMeta())
                    && (e.getInventory().getItem(4) != null) && (e.getInventory().getItem(4).hasItemMeta()) && (e.getInventory().getItem(4).getItemMeta().hasEnchant(Enchantment.DURABILITY)) && (e.getInventory().getItem(4).getItemMeta().getEnchantLevel(Enchantment.DURABILITY) == 4) && (e.getInventory().getItem(4).hasItemMeta())
                    && (e.getInventory().getItem(6) != null) && (e.getInventory().getItem(6).hasItemMeta()) && (e.getInventory().getItem(6).getItemMeta().hasEnchant(Enchantment.DURABILITY)) && (e.getInventory().getItem(6).getItemMeta().getEnchantLevel(Enchantment.DURABILITY) == 4) && (e.getInventory().getItem(6).hasItemMeta())
                    && (e.getInventory().getItem(7) != null) && (e.getInventory().getItem(7).hasItemMeta()) && (e.getInventory().getItem(7).getItemMeta().hasEnchant(Enchantment.DURABILITY)) && (e.getInventory().getItem(7).getItemMeta().getEnchantLevel(Enchantment.DURABILITY) == 4) && (e.getInventory().getItem(7).hasItemMeta())
                    && (e.getInventory().getItem(8) != null) && (e.getInventory().getItem(8).hasItemMeta()) && (e.getInventory().getItem(8).getItemMeta().hasEnchant(Enchantment.DURABILITY)) && (e.getInventory().getItem(8).getItemMeta().getEnchantLevel(Enchantment.DURABILITY) == 4) && (e.getInventory().getItem(8).hasItemMeta())
                    && (e.getInventory().getItem(9) != null) && (e.getInventory().getItem(9).hasItemMeta()) && (e.getInventory().getItem(9).getItemMeta().hasEnchant(Enchantment.DURABILITY)) && (e.getInventory().getItem(9).getItemMeta().getEnchantLevel(Enchantment.DURABILITY) == 4) && (e.getInventory().getItem(9).hasItemMeta())
                    ){
            }
        }
        if((e.getInventory().getResult() != null) && (e.getInventory().getResult().equals(plugin.serecipe))){
            if((e.getInventory().getItem(1) != null) && (e.getInventory().getItem(1).hasItemMeta()) && (e.getInventory().getItem(1).getItemMeta().hasEnchant(Enchantment.DURABILITY)) && (e.getInventory().getItem(1).getItemMeta().getEnchantLevel(Enchantment.DURABILITY) == 4) && (e.getInventory().getItem(1).hasItemMeta())
                    && (e.getInventory().getItem(2) != null) && (e.getInventory().getItem(2).hasItemMeta()) && (e.getInventory().getItem(2).getItemMeta().hasEnchant(Enchantment.DURABILITY)) && (e.getInventory().getItem(2).getItemMeta().getEnchantLevel(Enchantment.DURABILITY) == 4) && (e.getInventory().getItem(2).hasItemMeta())
                    && (e.getInventory().getItem(3) != null) && (e.getInventory().getItem(3).hasItemMeta()) && (e.getInventory().getItem(3).getItemMeta().hasEnchant(Enchantment.DURABILITY)) && (e.getInventory().getItem(3).getItemMeta().getEnchantLevel(Enchantment.DURABILITY) == 4) && (e.getInventory().getItem(3).hasItemMeta())
                    && (e.getInventory().getItem(4) != null) && (e.getInventory().getItem(4).hasItemMeta()) && (e.getInventory().getItem(4).getItemMeta().hasEnchant(Enchantment.DURABILITY)) && (e.getInventory().getItem(4).getItemMeta().getEnchantLevel(Enchantment.DURABILITY) == 4) && (e.getInventory().getItem(4).hasItemMeta())
                    && (e.getInventory().getItem(6) != null) && (e.getInventory().getItem(6).hasItemMeta()) && (e.getInventory().getItem(6).getItemMeta().hasEnchant(Enchantment.DURABILITY)) && (e.getInventory().getItem(6).getItemMeta().getEnchantLevel(Enchantment.DURABILITY) == 4) && (e.getInventory().getItem(6).hasItemMeta())
                    && (e.getInventory().getItem(7) != null) && (e.getInventory().getItem(7).hasItemMeta()) && (e.getInventory().getItem(7).getItemMeta().hasEnchant(Enchantment.DURABILITY)) && (e.getInventory().getItem(7).getItemMeta().getEnchantLevel(Enchantment.DURABILITY) == 4) && (e.getInventory().getItem(7).hasItemMeta())
                    && (e.getInventory().getItem(8) != null) && (e.getInventory().getItem(8).hasItemMeta()) && (e.getInventory().getItem(8).getItemMeta().hasEnchant(Enchantment.DURABILITY)) && (e.getInventory().getItem(8).getItemMeta().getEnchantLevel(Enchantment.DURABILITY) == 4) && (e.getInventory().getItem(8).hasItemMeta())
                    && (e.getInventory().getItem(9) != null) && (e.getInventory().getItem(9).hasItemMeta()) && (e.getInventory().getItem(9).getItemMeta().hasEnchant(Enchantment.DURABILITY)) && (e.getInventory().getItem(9).getItemMeta().getEnchantLevel(Enchantment.DURABILITY) == 4) && (e.getInventory().getItem(9).hasItemMeta())
                    ){
            }
        }
    }

    @SuppressWarnings("static-access")
    @EventHandler
    public void playerInteract(PlayerInteractEvent e) {
        if (e.getPlayer().getInventory().getItemInHand().getType()
                .equals(plugin.slimeEgg)) {
            if (e.getAction().equals(Action.RIGHT_CLICK_BLOCK)) {
                WorldGuardPlugin wg = (WorldGuardPlugin) Bukkit.getServer()
                        .getPluginManager().getPlugin("WorldGuard");
                if (wg.canBuild(e.getPlayer(), e.getPlayer().getLocation())) {
                    // do something if player can build
                } else {
                    // do something else if player can't build
                    e.setCancelled(true);
                    e.getPlayer()
                            .sendMessage(
                                    ChatColor.RED
                                            + "You can not summon this boss in this area.");
                }
            }
        } else if (e.getPlayer().getInventory().getItemInHand().getType()
                .equals(plugin.cubeEgg)) {
            if (e.getAction().equals(Action.RIGHT_CLICK_BLOCK)) {
                WorldGuardPlugin wg = (WorldGuardPlugin) Bukkit.getServer()
                        .getPluginManager().getPlugin("WorldGuard");
                if (wg.canBuild(e.getPlayer(), e.getPlayer().getLocation())) {
                    // do something if player can build
                } else {
                    // do something else if player can't build
                    e.setCancelled(true);
                    e.getPlayer()
                            .sendMessage(
                                    ChatColor.RED
                                            + "You can not summon this boss in this area.");
                }
            }
        }
    }
}

I tried to inherit the crafting recipes from the main method, so I used that constructor. I guess it worked nicely for the Listener but not for the main class. Any help?

P.S: I also tried registering the events in the Listener class, no luck.

EDIT: Nevermind again, I fixed the whole problem in general. Big thanks to the guy who gave me the video.