From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Paul Sauve <paul@technove.co>
Date: Sat, 31 Oct 2020 18:51:38 -0500
Subject: [PATCH] Simpler ShapelessRecipes comparison for Vanilla

Paper added a fancy sorting comparison due to Bukkit recipes breaking
the vanilla one, however this is far more advanced than what you need
for all the vanilla recipes.

Airplane
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it under the terms of the GNU General Public License as published by
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diff --git a/src/main/java/net/minecraft/world/item/crafting/ShapelessRecipe.java b/src/main/java/net/minecraft/world/item/crafting/ShapelessRecipe.java
index 38f7d1ece27ec1a3deda21fb6a6f0e788c8ed718..252fc22844682c0f67dc02a87478e01e49b6430d 100644
--- a/src/main/java/net/minecraft/world/item/crafting/ShapelessRecipe.java
+++ b/src/main/java/net/minecraft/world/item/crafting/ShapelessRecipe.java
@@ -26,8 +26,13 @@ public class ShapelessRecipe extends io.papermc.paper.inventory.recipe.RecipeBoo
     final CraftingBookCategory category;
     final ItemStack result;
     final NonNullList<Ingredient> ingredients;
+    private final boolean isBukkit; // Pufferfish
 
+    // Pufferfish start
     public ShapelessRecipe(String group, CraftingBookCategory category, ItemStack result, NonNullList<Ingredient> ingredients) {
+        this(group, category, result, ingredients, false);
+    }
+    public ShapelessRecipe(String group, CraftingBookCategory category, ItemStack result, NonNullList<Ingredient> ingredients, boolean isBukkit) { this.isBukkit = isBukkit; // Pufferfish end
         this.group = group;
         this.category = category;
         this.result = result;
@@ -77,6 +82,28 @@ public class ShapelessRecipe extends io.papermc.paper.inventory.recipe.RecipeBoo
     }
 
     public boolean matches(CraftingContainer inventory, Level world) {
+        // Pufferfish start
+        if (!this.isBukkit) {
+            java.util.List<Ingredient> ingredients = com.google.common.collect.Lists.newArrayList(this.ingredients.toArray(new Ingredient[0]));
+
+            inventory: for (int index = 0; index < inventory.getContainerSize(); index++) {
+                ItemStack itemStack = inventory.getItem(index);
+
+                if (!itemStack.isEmpty()) {
+                    for (int i = 0; i < ingredients.size(); i++) {
+                        if (ingredients.get(i).test(itemStack)) {
+                            ingredients.remove(i);
+                            continue inventory;
+                        }
+                    }
+                    return false;
+                }
+            }
+
+            return ingredients.isEmpty();
+        }
+        // Pufferfish end
+
         StackedContents autorecipestackmanager = new StackedContents();
         autorecipestackmanager.initialize(this); // Paper - better exact choice recipes
         int i = 0;
diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftShapelessRecipe.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftShapelessRecipe.java
index acfe2676b840d4edc70507aa139f7db212ed90b7..ef89684b5e8ab20744ba02a71fe0465d197f627d 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftShapelessRecipe.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftShapelessRecipe.java
@@ -45,6 +45,6 @@ public class CraftShapelessRecipe extends ShapelessRecipe implements CraftRecipe
             data.set(i, toNMS(ingred.get(i), true));
         }
 
-        MinecraftServer.getServer().getRecipeManager().addRecipe(new RecipeHolder<>(CraftNamespacedKey.toMinecraft(this.getKey()), new net.minecraft.world.item.crafting.ShapelessRecipe(this.getGroup(), CraftRecipe.getCategory(this.getCategory()), CraftItemStack.asNMSCopy(this.getResult()), data)));
+        MinecraftServer.getServer().getRecipeManager().addRecipe(new RecipeHolder<>(CraftNamespacedKey.toMinecraft(this.getKey()), new net.minecraft.world.item.crafting.ShapelessRecipe(this.getGroup(), CraftRecipe.getCategory(this.getCategory()), CraftItemStack.asNMSCopy(this.getResult()), data, true))); // Pufferfish
     }
 }