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c5a10665b8
Spigot still maintains some partial implementation of "tick skipping", a practice in which the MinecraftServer.currentTick field is updated not by an increment of one per actual tick, but instead set to System.currentTimeMillis() / 50. This behaviour means that the tracked tick may "skip" a tick value in case a previous tick took more than the expected 50ms. To compensate for this in important paths, spigot/craftbukkit implements "wall-time". Instead of incrementing/decrementing ticks on block entities/entities by one for each call to their tick() method, they instead increment/decrement important values, like an ItemEntity's age or pickupDelay, by the difference of `currentTick - lastTick`, where `lastTick` is the value of `currentTick` during the last tick() call. These "fixes" however do not play nicely with minecraft's simulation distance as entities/block entities implementing the above behaviour would "catch up" their values when moving from a non-ticking chunk to a ticking one as their `lastTick` value remains stuck on the last tick in a ticking chunk and hence lead to a large "catch up" once ticked again. Paper completely removes the "tick skipping" behaviour (See patch "Further-improve-server-tick-loop"), making the above precautions completely unnecessary, which also rids paper of the previous described incompatibility with non-ticking chunks.
138 lines
9 KiB
Diff
138 lines
9 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Jake Potrebic <jake.m.potrebic@gmail.com>
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Date: Sun, 13 Aug 2023 15:41:52 -0700
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Subject: [PATCH] Improve performance of mass crafts
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When the server crafts all available items in CraftingMenu or InventoryMenu the game
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checks either 4 or 9 times for each individual craft for a matching recipe for that container.
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This check can be expensive if 64 total crafts are being performed with the recipe matching logic
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being run 64 * 9 + 64 times. A breakdown of those times is below. This patch caches the last matching
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recipe so that it is checked first and only if it doesn't match does the rest of the matching logic run.
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Shift-click crafts are processed one at a time, so shift clicking on an item in the result of a iron block craft
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where all the 9 inputs are full stacks of iron will run 64 iron block crafts. For each of those crafts, the
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'remaining' blocks are calculated. This is due to recipes that have leftover items like buckets. This is done
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for each craft, and done once to get the full 9 leftover items which are usually air. Then 1 item is removed
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from each of the 9 inputs and each time that happens, logic is triggered to update the result itemstack. So
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for each craft, that logic is run 9 times (hence the 64 * 9). The + 64 is from the 64 checks for remaining items.
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After this patch, the full iteration over all recipes checking for a match should run once for a full craft to find the
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initial recipe match. Then that recipe will be checked first for all future recipe match checks.
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diff --git a/src/main/java/net/minecraft/world/inventory/CraftingContainer.java b/src/main/java/net/minecraft/world/inventory/CraftingContainer.java
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index 779d107a4d07820529273af5931421c09d1dc27f..4f6c8c43f5150e340704682accfbe2a5b1c5db19 100644
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--- a/src/main/java/net/minecraft/world/inventory/CraftingContainer.java
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+++ b/src/main/java/net/minecraft/world/inventory/CraftingContainer.java
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@@ -18,11 +18,11 @@ public interface CraftingContainer extends Container, StackedContentsCompatible
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List<ItemStack> getItems();
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// CraftBukkit start
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- default RecipeHolder<?> getCurrentRecipe() {
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+ default RecipeHolder<net.minecraft.world.item.crafting.CraftingRecipe> getCurrentRecipe() { // Paper - use correct generic
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return null;
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}
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- default void setCurrentRecipe(RecipeHolder<?> recipe) {
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+ default void setCurrentRecipe(RecipeHolder<net.minecraft.world.item.crafting.CraftingRecipe> recipe) { // Paper - use correct generic
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}
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// CraftBukkit end
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diff --git a/src/main/java/net/minecraft/world/inventory/CraftingMenu.java b/src/main/java/net/minecraft/world/inventory/CraftingMenu.java
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index b572c905b2ef3cf79202c5f35eefd6a636e872f5..f9e4714cb0ee74505ed72200abed7756aa68dc90 100644
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--- a/src/main/java/net/minecraft/world/inventory/CraftingMenu.java
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+++ b/src/main/java/net/minecraft/world/inventory/CraftingMenu.java
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@@ -79,6 +79,7 @@ public class CraftingMenu extends RecipeBookMenu<CraftingInput, CraftingRecipe>
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CraftingInput craftinginput = craftingInventory.asCraftInput();
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ServerPlayer entityplayer = (ServerPlayer) player;
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ItemStack itemstack = ItemStack.EMPTY;
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+ if (recipe == null) recipe = craftingInventory.getCurrentRecipe(); // Paper - Perf: Improve mass crafting; check last recipe used first
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Optional<RecipeHolder<CraftingRecipe>> optional = world.getServer().getRecipeManager().getRecipeFor(RecipeType.CRAFTING, craftinginput, world, recipe);
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craftingInventory.setCurrentRecipe(optional.orElse(null)); // CraftBukkit
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diff --git a/src/main/java/net/minecraft/world/inventory/ResultSlot.java b/src/main/java/net/minecraft/world/inventory/ResultSlot.java
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index c75bc6bec06bb7c32eea81c0bc89441beb3d1150..37a89bf79017eb65f82276b054a70ddb5eb5e549 100644
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--- a/src/main/java/net/minecraft/world/inventory/ResultSlot.java
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+++ b/src/main/java/net/minecraft/world/inventory/ResultSlot.java
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@@ -63,7 +63,7 @@ public class ResultSlot extends Slot {
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CraftingInput craftingInput = positioned.input();
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int i = positioned.left();
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int j = positioned.top();
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- NonNullList<ItemStack> nonNullList = player.level().getRecipeManager().getRemainingItemsFor(RecipeType.CRAFTING, craftingInput, player.level());
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+ NonNullList<ItemStack> nonNullList = player.level().getRecipeManager().getRemainingItemsFor(RecipeType.CRAFTING, craftingInput, player.level(), this.craftSlots.getCurrentRecipe()); // Paper - Perf: Improve mass crafting; check last recipe used first
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for (int k = 0; k < craftingInput.height(); k++) {
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for (int l = 0; l < craftingInput.width(); l++) {
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diff --git a/src/main/java/net/minecraft/world/inventory/TransientCraftingContainer.java b/src/main/java/net/minecraft/world/inventory/TransientCraftingContainer.java
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index 341e1f70602ecdb4782c9cd74fa19135ac230d90..42207462c4e720677a5ddbba4129dae60420aaa3 100644
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--- a/src/main/java/net/minecraft/world/inventory/TransientCraftingContainer.java
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+++ b/src/main/java/net/minecraft/world/inventory/TransientCraftingContainer.java
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@@ -27,7 +27,7 @@ public class TransientCraftingContainer implements CraftingContainer {
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// CraftBukkit start - add fields
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public List<HumanEntity> transaction = new java.util.ArrayList<HumanEntity>();
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- private RecipeHolder<?> currentRecipe;
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+ private RecipeHolder<net.minecraft.world.item.crafting.CraftingRecipe> currentRecipe; // Paper - use correct generic
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public Container resultInventory;
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private Player owner;
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private int maxStack = MAX_STACK;
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@@ -72,12 +72,12 @@ public class TransientCraftingContainer implements CraftingContainer {
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}
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@Override
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- public RecipeHolder<?> getCurrentRecipe() {
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+ public RecipeHolder<net.minecraft.world.item.crafting.CraftingRecipe> getCurrentRecipe() { // Paper - use correct generic
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return this.currentRecipe;
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}
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@Override
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- public void setCurrentRecipe(RecipeHolder<?> currentRecipe) {
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+ public void setCurrentRecipe(RecipeHolder<net.minecraft.world.item.crafting.CraftingRecipe> currentRecipe) { // Paper - use correct generic
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this.currentRecipe = currentRecipe;
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}
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diff --git a/src/main/java/net/minecraft/world/item/crafting/RecipeManager.java b/src/main/java/net/minecraft/world/item/crafting/RecipeManager.java
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index 407f3c1938b5b5d893b09705fe4930dbdafa3c8e..de7c77c1b25680ecc65f0f43f2391aff269a974f 100644
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--- a/src/main/java/net/minecraft/world/item/crafting/RecipeManager.java
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+++ b/src/main/java/net/minecraft/world/item/crafting/RecipeManager.java
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@@ -111,13 +111,20 @@ public class RecipeManager extends SimpleJsonResourceReloadListener {
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}
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public <I extends RecipeInput, T extends Recipe<I>> Optional<RecipeHolder<T>> getRecipeFor(RecipeType<T> type, I input, Level world, @Nullable RecipeHolder<T> recipe) {
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- // CraftBukkit start
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- List<RecipeHolder<T>> list = this.byType(type).stream().filter((recipeholder1) -> {
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- return recipeholder1.value().matches(input, world);
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- }).toList();
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- Optional<RecipeHolder<T>> recipe1 = (list.isEmpty() || input.isEmpty()) ? Optional.empty() : (recipe != null && recipe.value().matches(input, world) ? Optional.of(recipe) : Optional.of(list.getLast())); // CraftBukkit - SPIGOT-4638: last recipe gets priority
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- return recipe1;
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- // CraftBukkit end
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+ // Paper start - fix upstream's complete screw up of checking last used recipe
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+ if (input.isEmpty()) {
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+ return Optional.empty();
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+ } else if (recipe != null && recipe.value().matches(input, world)) {
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+ return Optional.of(recipe);
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+ } else {
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+ // CraftBukkit start
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+ List<RecipeHolder<T>> list = this.byType(type).stream().filter((recipeholder1) -> {
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+ return recipeholder1.value().matches(input, world);
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+ }).toList();
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+ return list.isEmpty() ? Optional.empty() : Optional.of(list.getLast()); // CraftBukkit - SPIGOT-4638: last recipe gets priority
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+ // CraftBukkit end
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+ }
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+ // Paper end
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}
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public <I extends RecipeInput, T extends Recipe<I>> List<RecipeHolder<T>> getAllRecipesFor(RecipeType<T> type) {
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@@ -137,7 +144,12 @@ public class RecipeManager extends SimpleJsonResourceReloadListener {
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}
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public <I extends RecipeInput, T extends Recipe<I>> NonNullList<ItemStack> getRemainingItemsFor(RecipeType<T> type, I input, Level world) {
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- Optional<RecipeHolder<T>> optional = this.getRecipeFor(type, input, world);
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+ // Paper start - Perf: improve performance of mass crafts
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+ return this.getRemainingItemsFor(type, input, world, null);
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+ }
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+ public <I extends RecipeInput, T extends Recipe<I>> NonNullList<ItemStack> getRemainingItemsFor(RecipeType<T> type, I input, Level world, @Nullable RecipeHolder<T> previousRecipe) {
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+ Optional<RecipeHolder<T>> optional = this.getRecipeFor(type, input, world, previousRecipe);
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+ // Paper end - Perf: improve performance of mass crafts
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if (optional.isPresent()) {
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return ((RecipeHolder) optional.get()).value().getRemainingItems(input);
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