From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: IPECTER <ipectert@gmail.com>
Date: Wed, 6 Sep 2023 16:23:56 +0900
Subject: [PATCH] CarpetFixes-Optimizations-RecipeManager

Original: fxmorin/carpet-fixes
Copyright (C) 2023 fxmorin

RecipeManager optimization.
Optimized by taking out streams & doing extra early checks to quickly remove unrelated recipes

diff --git a/src/main/java/net/minecraft/world/item/crafting/RecipeManager.java b/src/main/java/net/minecraft/world/item/crafting/RecipeManager.java
index ab6dc3449a1d3b7acf1d7bf5ac1c24224cc252c7..53756f780dd0315fc18bf93cf4607b51a8d5059e 100644
--- a/src/main/java/net/minecraft/world/item/crafting/RecipeManager.java
+++ b/src/main/java/net/minecraft/world/item/crafting/RecipeManager.java
@@ -103,13 +103,38 @@ public class RecipeManager extends SimpleJsonResourceReloadListener {
     }
 
     public <C extends Container, T extends Recipe<C>> Optional<T> getRecipeFor(RecipeType<T> type, C inventory, Level world) {
-        // CraftBukkit start
-        Optional<T> recipe = this.byType(type).values().stream().filter((irecipe) -> {
-            return irecipe.matches(inventory, world);
-        }).findFirst();
-        inventory.setCurrentRecipe(recipe.orElse(null)); // CraftBukkit - Clear recipe when no recipe is found
-        // CraftBukkit end
-        return recipe;
+        // Plazma start - CarpetFixes - Optimized RecipeManager
+        if (world.plazmaLevelConfiguration().carpetFixes.optimizedRecipeManager() && type == RecipeType.CRAFTING) {
+            int slots = 0;
+            int count;
+            //compare size to quickly remove recipes that are not even close. Plus remove streams
+            for (int slot = 0; slot < inventory.getContainerSize(); slot++)
+                if (!inventory.getItem(slot).isEmpty()) slots++;
+            for (Recipe<C> recipe : this.byType(type).values()) {
+                count = 0;
+                if (recipe instanceof CustomRecipe) {
+                    if (recipe.matches(inventory, world)) {
+                        return (Optional<T>) Optional.of(recipe);
+                    }
+                } else {
+                    for (Ingredient ingredient : recipe.getIngredients())
+                        if (ingredient != Ingredient.EMPTY) count++;
+                    if (count == slots && recipe.matches(inventory, world)) {
+                        return (Optional<T>) Optional.of(recipe);
+                    }
+                }
+            }
+            return Optional.empty();
+        } else {
+            // CraftBukkit start
+            Optional<T> recipe = this.byType(type).values().stream().filter((irecipe) -> {
+                return irecipe.matches(inventory, world);
+            }).findFirst();
+            inventory.setCurrentRecipe(recipe.orElse(null)); // CraftBukkit - Clear recipe when no recipe is found
+            // CraftBukkit end
+            return recipe;
+        }
+        // Plazma end
     }
 
     public <C extends Container, T extends Recipe<C>> Optional<Pair<ResourceLocation, T>> getRecipeFor(RecipeType<T> type, C inventory, Level world, @Nullable ResourceLocation id) {
@@ -131,7 +156,7 @@ public class RecipeManager extends SimpleJsonResourceReloadListener {
     }
 
     public <C extends Container, T extends Recipe<C>> List<T> getAllRecipesFor(RecipeType<T> type) {
-        return List.copyOf(this.byType(type).values());
+        return org.plazmamc.plazma.configurations.GlobalConfiguration.get().carpetFixes.optimizedRecipeManager() ? (List<T>) new java.util.ArrayList<>(this.byType(type).values()) : List.copyOf(this.byType(type).values()); // Plazma start - CarpetFixes - Optimized RecipeManager
     }
 
     public <C extends Container, T extends Recipe<C>> List<T> getRecipesFor(RecipeType<T> type, C inventory, Level world) {
diff --git a/src/main/java/org/plazmamc/plazma/configurations/GlobalConfiguration.java b/src/main/java/org/plazmamc/plazma/configurations/GlobalConfiguration.java
index bf323df50bc07e19ec6e3a4a11f3b7db466064c9..e68ec6e28b0b3a1e3ced2bbcad029d6e1fac17b6 100644
--- a/src/main/java/org/plazmamc/plazma/configurations/GlobalConfiguration.java
+++ b/src/main/java/org/plazmamc/plazma/configurations/GlobalConfiguration.java
@@ -82,10 +82,15 @@ public class GlobalConfiguration extends ConfigurationPart {
 
         public boolean enabled = DO_OPTIMIZE;
         boolean optimizedBiomeAccess = true;
+        boolean optimizedRecipeManager = true;
 
         public boolean optimizedBiomeAccess() {
             return enabled && optimizedBiomeAccess;
         }
 
+        public boolean optimizedRecipeManager() {
+            return enabled && optimizedRecipeManager;
+        }
+
     }
 }
diff --git a/src/main/java/org/plazmamc/plazma/configurations/LevelConfigurations.java b/src/main/java/org/plazmamc/plazma/configurations/LevelConfigurations.java
index b0deec445b5ea3cd3e4802eca04e99818b539bd8..e089a881600b61060bae1135b89703f6c0b5c7e8 100644
--- a/src/main/java/org/plazmamc/plazma/configurations/LevelConfigurations.java
+++ b/src/main/java/org/plazmamc/plazma/configurations/LevelConfigurations.java
@@ -137,6 +137,11 @@ public class LevelConfigurations extends ConfigurationPart {
     public class CarpetFixes extends ConfigurationPart {
 
         public boolean enabled = DO_OPTIMIZE;
+        boolean optimizedRecipeManager = true;
+
+        public boolean optimizedRecipeManager() {
+            return enabled && optimizedRecipeManager;
+        }
 
     }
 }