PaperMC/patches/api/0166-Add-ItemStack-Recipe-API-helper-methods.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Tue, 28 Jan 2014 19:13:57 -0500
Subject: [PATCH] Add ItemStack Recipe API helper methods

Allows using ExactChoice Recipes with easier methods

Redirects some of upstream's APIs to these new methods to avoid
usage of magic values and the deprecated RecipeChoice#getItemStack

diff --git a/src/main/java/org/bukkit/inventory/RecipeChoice.java b/src/main/java/org/bukkit/inventory/RecipeChoice.java
index 90208bc96085f05a3b657b9467b1670d00b03104..523818cbb0d6c90481ec97123e7fe0e2ff4eea14 100644
--- a/src/main/java/org/bukkit/inventory/RecipeChoice.java
+++ b/src/main/java/org/bukkit/inventory/RecipeChoice.java
@@ -146,8 +146,6 @@ public interface RecipeChoice extends Predicate<ItemStack>, Cloneable {
     /**
      * Represents a choice that will be valid only one of the stacks is exactly
      * matched (aside from stack size).
-     * <br>
-     * <b>Only valid for shaped recipes</b>
      */
     public static class ExactChoice implements RecipeChoice {
 
diff --git a/src/main/java/org/bukkit/inventory/ShapedRecipe.java b/src/main/java/org/bukkit/inventory/ShapedRecipe.java
index be68263386a8faea7744f4de75d484e9358c87df..c2d224b6472a65cd362e1ab55ce7e3d0b5a3befc 100644
--- a/src/main/java/org/bukkit/inventory/ShapedRecipe.java
+++ b/src/main/java/org/bukkit/inventory/ShapedRecipe.java
@@ -180,6 +180,13 @@ public class ShapedRecipe implements Recipe, Keyed {
         return this;
     }
 
+    // Paper start
+    @NotNull
+    public ShapedRecipe setIngredient(char key, @NotNull ItemStack item) {
+        return setIngredient(key, new RecipeChoice.ExactChoice(item));
+    }
+    // Paper end
+
     /**
      * Get a copy of the ingredients map.
      *
diff --git a/src/main/java/org/bukkit/inventory/ShapelessRecipe.java b/src/main/java/org/bukkit/inventory/ShapelessRecipe.java
index 05ef88225415cd30de36f4517b6fb40d826ce996..8bf26da12dcb03f22f842a57798948d5513c227d 100644
--- a/src/main/java/org/bukkit/inventory/ShapelessRecipe.java
+++ b/src/main/java/org/bukkit/inventory/ShapelessRecipe.java
@@ -141,6 +141,40 @@ public class ShapelessRecipe implements Recipe, Keyed {
         return this;
     }
 
+    // Paper start
+    @NotNull
+    public ShapelessRecipe addIngredient(@NotNull ItemStack item) {
+        return addIngredient(item.getAmount(), item);
+    }
+
+    @NotNull
+    public ShapelessRecipe addIngredient(int count, @NotNull ItemStack item) {
+        Preconditions.checkArgument(ingredients.size() + count <= 9, "Shapeless recipes cannot have more than 9 ingredients");
+        while (count-- > 0) {
+            ingredients.add(new RecipeChoice.ExactChoice(item));
+        }
+        return this;
+    }
+
+    @NotNull
+    public ShapelessRecipe removeIngredient(@NotNull ItemStack item) {
+        return removeIngredient(1, item);
+    }
+
+    @NotNull
+    public ShapelessRecipe removeIngredient(int count, @NotNull ItemStack item) {
+        Iterator<RecipeChoice> iterator = ingredients.iterator();
+        while (count > 0 && iterator.hasNext()) {
+            RecipeChoice choice = iterator.next();
+            if (choice.test(item)) {
+                iterator.remove();
+                count--;
+            }
+        }
+        return this;
+    }
+    // Paper end
+
     /**
      * Removes an ingredient from the list.
      *
@@ -164,7 +198,7 @@ public class ShapelessRecipe implements Recipe, Keyed {
      */
     @NotNull
     public ShapelessRecipe removeIngredient(@NotNull Material ingredient) {
-        return removeIngredient(ingredient, 0);
+        return removeIngredient(new ItemStack(ingredient)); // Paper - avoid using deprecated methods (magic values; RecipeChoice#getItemStack)
     }
 
     /**
@@ -191,7 +225,7 @@ public class ShapelessRecipe implements Recipe, Keyed {
      */
     @NotNull
     public ShapelessRecipe removeIngredient(int count, @NotNull Material ingredient) {
-        return removeIngredient(count, ingredient, 0);
+        return removeIngredient(count, new ItemStack(ingredient)); // Paper - avoid using deprecated methods (magic values; RecipeChoice#getItemStack)
     }
 
     /**