From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: nostalgic853 <yuu8583@proton.me>
Date: Tue, 25 Oct 2022 00:57:45 +0800
Subject: [PATCH] Carpet-Fixes: Use optimized RecipeManager

This patch is based on the following mixin:
"carpetfixes/mixins/optimizations/RecipeManager_fasterMixin.java"
By: fxmorin <28154542+fxmorin@users.noreply.github.com>

Original license: MIT
Original project: https://github.com/fxmorin/carpet-fixes

Dreeam: Remove stream, better than original version

Optimized the RecipeManager getFirstMatch call to be up to 3x faster
This is a fully vanilla optimization. Improves: [Blast]Furnace/Campfire/Smoker/Stonecutter/Crafting/Sheep Color Choosing
This was mostly made for the auto crafting table, since the performance boost is much more visible while using that mod

diff --git a/net/minecraft/world/item/crafting/RecipeManager.java b/net/minecraft/world/item/crafting/RecipeManager.java
index 07d7c4737635f671f33b8f73001d67928fc75782..c30fafe40e52d1c5c713e48364dce6c9797443a2 100644
--- a/net/minecraft/world/item/crafting/RecipeManager.java
+++ b/net/minecraft/world/item/crafting/RecipeManager.java
@@ -167,8 +167,20 @@ public class RecipeManager extends SimplePreparableReloadListener<RecipeMap> imp
 
     public <I extends RecipeInput, T extends Recipe<I>> Optional<RecipeHolder<T>> getRecipeFor(RecipeType<T> recipeType, I input, Level level) {
         // CraftBukkit start
-        List<RecipeHolder<T>> list = this.recipes.getRecipesFor(recipeType, input, level).toList();
-        return (list.isEmpty()) ? Optional.empty() : Optional.of(list.getLast()); // CraftBukkit - SPIGOT-4638: last recipe gets priority
+        // Leaf start - Carpet-Fixes - Use optimized RecipeManager - Remove streams to be faster
+        if (input.isEmpty()) {
+            return Optional.empty();
+        }
+
+        RecipeHolder<T> lastRecipe = null;
+        for (RecipeHolder<T> recipeHolder : this.recipes.byType(recipeType)) {
+            if (recipeHolder.value().matches(input, level)) {
+                lastRecipe = recipeHolder;
+            }
+        }
+
+        return lastRecipe != null ? Optional.of(lastRecipe) : Optional.empty();
+        // Leaf end - Carpet-Fixes - Use optimized RecipeManager - Remove streams to be faster
         // CraftBukkit end
     }
 
diff --git a/net/minecraft/world/item/crafting/RecipeMap.java b/net/minecraft/world/item/crafting/RecipeMap.java
index 098753ddd215b6ef5915fac71d8c4f0b19cf4142..0fb79f5a0284d5ef27a82eb7771b7acd3d36253e 100644
--- a/net/minecraft/world/item/crafting/RecipeMap.java
+++ b/net/minecraft/world/item/crafting/RecipeMap.java
@@ -73,6 +73,6 @@ public class RecipeMap {
     }
 
     public <I extends RecipeInput, T extends Recipe<I>> Stream<RecipeHolder<T>> getRecipesFor(RecipeType<T> type, I input, Level level) {
-        return input.isEmpty() ? Stream.empty() : this.byType(type).stream().filter(recipeHolder -> recipeHolder.value().matches(input, level));
+        return input.isEmpty() ? Stream.empty() : this.byType(type).stream().filter(recipeHolder -> recipeHolder.value().matches(input, level)); // Leaf - Carpet-Fixes - Use optimized RecipeManager - diff on change
     }
 }