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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Sat, 21 Aug 2021 17:25:38 -0700
Subject: [PATCH] API for updating recipes on clients


diff --git a/src/main/java/net/minecraft/server/players/PlayerList.java b/src/main/java/net/minecraft/server/players/PlayerList.java
index 8b54fab09699dec0cb0fb6063accb04e48a36b6e..bd097ae6edfc0ad810d41ed8bbc7fab34d255610 100644
--- a/src/main/java/net/minecraft/server/players/PlayerList.java
+++ b/src/main/java/net/minecraft/server/players/PlayerList.java
@@ -1449,6 +1449,13 @@ public abstract class PlayerList {
     }
 
     public void reloadResources() {
+        // Paper start - API for updating recipes on clients
+        this.reloadAdvancementData();
+        this.reloadTagData();
+        this.reloadRecipes();
+    }
+    public void reloadAdvancementData() {
+        // Paper end - API for updating recipes on clients
         // CraftBukkit start
         /*Iterator iterator = this.advancements.values().iterator();
 
@@ -1464,9 +1471,13 @@ public abstract class PlayerList {
         }
         // CraftBukkit end
 
+        // Paper start - API for updating recipes on clients
+    }
+    public void reloadTagData() {
         this.broadcastAll(new ClientboundUpdateTagsPacket(TagNetworkSerialization.serializeTagsToNetwork(this.registries)));
         // CraftBukkit start
-        this.reloadRecipes();
+        // this.reloadRecipes(); // Paper - do not reload recipes just because tag data was reloaded
+        // Paper end - API for updating recipes on clients
     }
 
     public void reloadRecipes() {
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
index 54b5dee7cfd19ad58e376eee80d3827f1a80cfcd..a755137d8d4b266a648cb2a4f41a5ed00262f121 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
@@ -1190,6 +1190,18 @@ public final class CraftServer implements Server {
         ReloadCommand.reload(this.console);
     }
 
+    // Paper start - API for updating recipes on clients
+    @Override
+    public void updateResources() {
+        this.playerList.reloadResources();
+    }
+
+    @Override
+    public void updateRecipes() {
+        this.playerList.reloadRecipes();
+    }
+    // Paper end - API for updating recipes on clients
+
     private void loadIcon() {
         this.icon = new CraftIconCache(null);
         try {
@@ -1569,6 +1581,13 @@ public final class CraftServer implements Server {
 
     @Override
     public boolean addRecipe(Recipe recipe) {
+        // Paper start - API for updating recipes on clients
+        return this.addRecipe(recipe, false);
+    }
+
+    @Override
+    public boolean addRecipe(Recipe recipe, boolean resendRecipes) {
+        // Paper end - API for updating recipes on clients
         CraftRecipe toAdd;
         if (recipe instanceof CraftRecipe) {
             toAdd = (CraftRecipe) recipe;
@@ -1600,6 +1619,11 @@ public final class CraftServer implements Server {
             }
         }
         toAdd.addToCraftingManager();
+        // Paper start - API for updating recipes on clients
+        if (true || resendRecipes) { // Always needs to be resent now... TODO
+            this.playerList.reloadRecipes();
+        }
+        // Paper end - API for updating recipes on clients
         return true;
     }
 
@@ -1780,9 +1804,23 @@ public final class CraftServer implements Server {
 
     @Override
     public boolean removeRecipe(NamespacedKey recipeKey) {
+        // Paper start - API for updating recipes on clients
+        return this.removeRecipe(recipeKey, false);
+    }
+
+    @Override
+    public boolean removeRecipe(NamespacedKey recipeKey, boolean resendRecipes) {
+        // Paper end - API for updating recipes on clients
         Preconditions.checkArgument(recipeKey != null, "recipeKey == null");
 
-        return this.getServer().getRecipeManager().removeRecipe(CraftRecipe.toMinecraft(recipeKey));
+        // Paper start - resend recipes on successful removal
+        final ResourceKey<net.minecraft.world.item.crafting.Recipe<?>> minecraftKey = CraftRecipe.toMinecraft(recipeKey);
+        final boolean removed = this.getServer().getRecipeManager().removeRecipe(minecraftKey);
+        if (removed/* && resendRecipes*/) { // TODO Always need to resend them rn - deprecate this method?
+            this.playerList.reloadRecipes();
+        }
+        return removed;
+        // Paper end - resend recipes on successful removal
     }
 
     @Override