diff --git a/patches/server/Optimize-Hoppers.patch b/patches/server/Optimize-Hoppers.patch new file mode 100644 index 000000000..091074c67 --- /dev/null +++ b/patches/server/Optimize-Hoppers.patch @@ -0,0 +1,579 @@ +From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 +From: Aikar +Date: Wed, 27 Apr 2016 22:09:52 -0400 +Subject: [PATCH] Optimize Hoppers + +* Removes unnecessary extra calls to .update() that are very expensive +* Lots of itemstack cloning removed. Only clone if the item is actually moved +* Return true when a plugin cancels inventory move item event instead of false, as false causes pulls to cycle through all items. + However, pushes do not exhibit the same behavior, so this is not something plugins could of been relying on. +* Add option (Default on) to cooldown hoppers when they fail to move an item due to full inventory +* Skip subsequent InventoryMoveItemEvents if a plugin does not use the item after first event fire for an iteration +* Don't check for Entities with Inventories if the block above us is also occluding (not just Inventoried) +* Remove Streams from Item Suck In and restore restore 1.12 AABB checks which is simpler and no voxel allocations (was doing TWO Item Suck ins) + +diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java +index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644 +--- a/src/main/java/net/minecraft/server/MinecraftServer.java ++++ b/src/main/java/net/minecraft/server/MinecraftServer.java +@@ -0,0 +0,0 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop 0; // Paper ++ net.minecraft.world.level.block.entity.HopperBlockEntity.skipHopperEvents = worldserver.paperConfig().hopper.disableMoveEvent || org.bukkit.event.inventory.InventoryMoveItemEvent.getHandlerList().getRegisteredListeners().length == 0; // Paper + worldserver.hasEntityMoveEvent = io.papermc.paper.event.entity.EntityMoveEvent.getHandlerList().getRegisteredListeners().length > 0; // Paper + + this.profiler.push(() -> { +diff --git a/src/main/java/net/minecraft/world/item/ItemStack.java b/src/main/java/net/minecraft/world/item/ItemStack.java +index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644 +--- a/src/main/java/net/minecraft/world/item/ItemStack.java ++++ b/src/main/java/net/minecraft/world/item/ItemStack.java +@@ -0,0 +0,0 @@ public final class ItemStack { + } + + public ItemStack copy() { +- if (this.isEmpty()) { ++ // Paper start ++ return this.copy(false); ++ } ++ ++ public ItemStack copy(boolean originalItem) { ++ if (!originalItem && this.isEmpty()) { ++ // Paper end + return ItemStack.EMPTY; + } else { +- ItemStack itemstack = new ItemStack(this.getItem(), this.count); ++ ItemStack itemstack = new ItemStack(originalItem ? this.item : this.getItem(), this.count); // Paper + + itemstack.setPopTime(this.getPopTime()); + if (this.tag != null) { +diff --git a/src/main/java/net/minecraft/world/level/block/entity/BlockEntity.java b/src/main/java/net/minecraft/world/level/block/entity/BlockEntity.java +index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644 +--- a/src/main/java/net/minecraft/world/level/block/entity/BlockEntity.java ++++ b/src/main/java/net/minecraft/world/level/block/entity/BlockEntity.java +@@ -0,0 +0,0 @@ import co.aikar.timings.MinecraftTimings; // Paper + import co.aikar.timings.Timing; // Paper + + public abstract class BlockEntity { ++ static boolean ignoreTileUpdates; // Paper + + public Timing tickTimer = MinecraftTimings.getTileEntityTimings(this); // Paper + // CraftBukkit start - data containers +@@ -0,0 +0,0 @@ public abstract class BlockEntity { + + public void setChanged() { + if (this.level != null) { ++ if (ignoreTileUpdates) return; // Paper + BlockEntity.setChanged(this.level, this.worldPosition, this.blockState); + } + +diff --git a/src/main/java/net/minecraft/world/level/block/entity/HopperBlockEntity.java b/src/main/java/net/minecraft/world/level/block/entity/HopperBlockEntity.java +index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644 +--- a/src/main/java/net/minecraft/world/level/block/entity/HopperBlockEntity.java ++++ b/src/main/java/net/minecraft/world/level/block/entity/HopperBlockEntity.java +@@ -0,0 +0,0 @@ public class HopperBlockEntity extends RandomizableContainerBlockEntity implemen + return false; + } + ++ // Paper start - Optimize Hoppers ++ private static boolean skipPullModeEventFire; ++ private static boolean skipPushModeEventFire; ++ public static boolean skipHopperEvents; ++ ++ private static boolean hopperPush(final Level level, final Container destination, final Direction direction, final HopperBlockEntity hopper) { ++ skipPushModeEventFire = skipHopperEvents; ++ boolean foundItem = false; ++ for (int i = 0; i < hopper.getContainerSize(); ++i) { ++ final ItemStack item = hopper.getItem(i); ++ if (!item.isEmpty()) { ++ foundItem = true; ++ ItemStack origItemStack = item; ++ ItemStack movedItem = origItemStack; ++ ++ final int originalItemCount = origItemStack.getCount(); ++ final int movedItemCount = Math.min(level.spigotConfig.hopperAmount, originalItemCount); ++ origItemStack.setCount(movedItemCount); ++ ++ // We only need to fire the event once to give protection plugins a chance to cancel this event ++ // Because nothing uses getItem, every event call should end up the same result. ++ if (!skipPushModeEventFire) { ++ movedItem = callPushMoveEvent(destination, movedItem, hopper); ++ if (movedItem == null) { // cancelled ++ origItemStack.setCount(originalItemCount); ++ return false; ++ } ++ } ++ ++ final ItemStack remainingItem = addItem(hopper, destination, movedItem, direction); ++ final int remainingItemCount = remainingItem.getCount(); ++ if (remainingItemCount != movedItemCount) { ++ origItemStack = origItemStack.copy(true); ++ origItemStack.setCount(originalItemCount); ++ if (!origItemStack.isEmpty()) { ++ origItemStack.setCount(originalItemCount - movedItemCount + remainingItemCount); ++ } ++ hopper.setItem(i, origItemStack); ++ destination.setChanged(); ++ return true; ++ } ++ origItemStack.setCount(originalItemCount); ++ } ++ } ++ if (foundItem && level.paperConfig().hopper.cooldownWhenFull) { // Inventory was full - cooldown ++ hopper.setCooldown(level.spigotConfig.hopperTransfer); ++ } ++ return false; ++ } ++ ++ private static boolean hopperPull(final Level level, final Hopper hopper, final Container container, ItemStack origItemStack, final int i) { ++ ItemStack movedItem = origItemStack; ++ final int originalItemCount = origItemStack.getCount(); ++ final int movedItemCount = Math.min(level.spigotConfig.hopperAmount, originalItemCount); ++ movedItem.setCount(movedItemCount); ++ ++ if (!skipPullModeEventFire) { ++ movedItem = callPullMoveEvent(hopper, container, movedItem); ++ if (movedItem == null) { // cancelled ++ origItemStack.setCount(originalItemCount); ++ // Drastically improve performance by returning true. ++ // No plugin could of relied on the behavior of false as the other call ++ // site for IMIE did not exhibit the same behavior ++ return true; ++ } ++ } ++ ++ final ItemStack remainingItem = addItem(container, hopper, movedItem, null); ++ final int remainingItemCount = remainingItem.getCount(); ++ if (remainingItemCount != movedItemCount) { ++ origItemStack = origItemStack.copy(true); ++ origItemStack.setCount(originalItemCount); ++ if (!origItemStack.isEmpty()) { ++ origItemStack.setCount(originalItemCount - movedItemCount + remainingItemCount); ++ } ++ ++ ignoreTileUpdates = true; ++ container.setItem(i, origItemStack); ++ ignoreTileUpdates = false; ++ container.setChanged(); ++ return true; ++ } ++ origItemStack.setCount(originalItemCount); ++ ++ if (level.paperConfig().hopper.cooldownWhenFull) { ++ cooldownHopper(hopper); ++ } ++ ++ return false; ++ } ++ ++ @Nullable ++ private static ItemStack callPushMoveEvent(Container iinventory, ItemStack itemstack, HopperBlockEntity hopper) { ++ final Inventory destinationInventory = getInventory(iinventory); ++ final InventoryMoveItemEvent event = new InventoryMoveItemEvent(hopper.getOwner(false).getInventory(), ++ CraftItemStack.asCraftMirror(itemstack), destinationInventory, true); ++ final boolean result = event.callEvent(); ++ if (!event.calledGetItem && !event.calledSetItem) { ++ skipPushModeEventFire = true; ++ } ++ if (!result) { ++ cooldownHopper(hopper); ++ return null; ++ } ++ ++ if (event.calledSetItem) { ++ return CraftItemStack.asNMSCopy(event.getItem()); ++ } else { ++ return itemstack; ++ } ++ } ++ ++ @Nullable ++ private static ItemStack callPullMoveEvent(final Hopper hopper, final Container container, final ItemStack itemstack) { ++ final Inventory sourceInventory = getInventory(container); ++ final Inventory destination = getInventory(hopper); ++ ++ // Mirror is safe as no plugins ever use this item ++ final InventoryMoveItemEvent event = new InventoryMoveItemEvent(sourceInventory, CraftItemStack.asCraftMirror(itemstack), destination, false); ++ final boolean result = event.callEvent(); ++ if (!event.calledGetItem && !event.calledSetItem) { ++ skipPullModeEventFire = true; ++ } ++ if (!result) { ++ cooldownHopper(hopper); ++ return null; ++ } ++ ++ if (event.calledSetItem) { ++ return CraftItemStack.asNMSCopy(event.getItem()); ++ } else { ++ return itemstack; ++ } ++ } ++ ++ private static Inventory getInventory(final Container container) { ++ final Inventory sourceInventory; ++ if (container instanceof CompoundContainer compoundContainer) { ++ // Have to special-case large chests as they work oddly ++ sourceInventory = new org.bukkit.craftbukkit.inventory.CraftInventoryDoubleChest(compoundContainer); ++ } else if (container instanceof BlockEntity blockEntity) { ++ sourceInventory = blockEntity.getOwner(false).getInventory(); ++ } else if (container.getOwner() != null) { ++ sourceInventory = container.getOwner().getInventory(); ++ } else { ++ sourceInventory = new CraftInventory(container); ++ } ++ return sourceInventory; ++ } ++ ++ private static void cooldownHopper(final Hopper hopper) { ++ if (hopper instanceof HopperBlockEntity blockEntity && blockEntity.getLevel() != null) { ++ blockEntity.setCooldown(blockEntity.getLevel().spigotConfig.hopperTransfer); ++ } ++ } ++ ++ private static boolean allMatch(Container iinventory, Direction enumdirection, java.util.function.BiPredicate test) { ++ if (iinventory instanceof WorldlyContainer) { ++ for (int i : ((WorldlyContainer) iinventory).getSlotsForFace(enumdirection)) { ++ if (!test.test(iinventory.getItem(i), i)) { ++ return false; ++ } ++ } ++ } else { ++ int size = iinventory.getContainerSize(); ++ for (int i = 0; i < size; i++) { ++ if (!test.test(iinventory.getItem(i), i)) { ++ return false; ++ } ++ } ++ } ++ return true; ++ } ++ ++ private static boolean anyMatch(Container iinventory, Direction enumdirection, java.util.function.BiPredicate test) { ++ if (iinventory instanceof WorldlyContainer) { ++ for (int i : ((WorldlyContainer) iinventory).getSlotsForFace(enumdirection)) { ++ if (test.test(iinventory.getItem(i), i)) { ++ return true; ++ } ++ } ++ } else { ++ int size = iinventory.getContainerSize(); ++ for (int i = 0; i < size; i++) { ++ if (test.test(iinventory.getItem(i), i)) { ++ return true; ++ } ++ } ++ } ++ return true; ++ } ++ private static final java.util.function.BiPredicate STACK_SIZE_TEST = (itemstack, i) -> itemstack.getCount() >= itemstack.getMaxStackSize(); ++ private static final java.util.function.BiPredicate IS_EMPTY_TEST = (itemstack, i) -> itemstack.isEmpty(); ++ // Paper end ++ + private static boolean ejectItems(Level world, BlockPos blockposition, BlockState iblockdata, Container iinventory, HopperBlockEntity hopper) { // CraftBukkit + Container iinventory1 = HopperBlockEntity.getAttachedContainer(world, blockposition, iblockdata); + +@@ -0,0 +0,0 @@ public class HopperBlockEntity extends RandomizableContainerBlockEntity implemen + if (HopperBlockEntity.isFullContainer(iinventory1, enumdirection)) { + return false; + } else { +- for (int i = 0; i < iinventory.getContainerSize(); ++i) { +- if (!iinventory.getItem(i).isEmpty()) { +- ItemStack itemstack = iinventory.getItem(i).copy(); +- // ItemStack itemstack1 = addItem(iinventory, iinventory1, iinventory.removeItem(i, 1), enumdirection); +- +- // CraftBukkit start - Call event when pushing items into other inventories +- CraftItemStack oitemstack = CraftItemStack.asCraftMirror(iinventory.removeItem(i, world.spigotConfig.hopperAmount)); // Spigot +- +- Inventory destinationInventory; +- // Have to special case large chests as they work oddly +- if (iinventory1 instanceof CompoundContainer) { +- destinationInventory = new org.bukkit.craftbukkit.inventory.CraftInventoryDoubleChest((CompoundContainer) iinventory1); +- } else if (iinventory1.getOwner() != null) { +- destinationInventory = iinventory1.getOwner().getInventory(); +- } else { +- destinationInventory = new CraftInventory(iinventory); +- } +- +- InventoryMoveItemEvent event = new InventoryMoveItemEvent(iinventory.getOwner().getInventory(), oitemstack.clone(), destinationInventory, true); +- world.getCraftServer().getPluginManager().callEvent(event); +- if (event.isCancelled()) { +- hopper.setItem(i, itemstack); +- hopper.setCooldown(world.spigotConfig.hopperTransfer); // Spigot +- return false; +- } +- int origCount = event.getItem().getAmount(); // Spigot +- ItemStack itemstack1 = HopperBlockEntity.addItem(iinventory, iinventory1, CraftItemStack.asNMSCopy(event.getItem()), enumdirection); ++ // Paper start - replace logic; MAKE SURE TO CHECK FOR DIFFS ON UPDATES ++ return hopperPush(world, iinventory1, enumdirection, hopper); ++ // for (int i = 0; i < iinventory.getContainerSize(); ++i) { ++ // if (!iinventory.getItem(i).isEmpty()) { ++ // ItemStack itemstack = iinventory.getItem(i).copy(); ++ // // ItemStack itemstack1 = addItem(iinventory, iinventory1, iinventory.removeItem(i, 1), enumdirection); ++ ++ // // CraftBukkit start - Call event when pushing items into other inventories ++ // CraftItemStack oitemstack = CraftItemStack.asCraftMirror(iinventory.removeItem(i, world.spigotConfig.hopperAmount)); // Spigot ++ ++ // Inventory destinationInventory; ++ // // Have to special case large chests as they work oddly ++ // if (iinventory1 instanceof CompoundContainer) { ++ // destinationInventory = new org.bukkit.craftbukkit.inventory.CraftInventoryDoubleChest((CompoundContainer) iinventory1); ++ // } else if (iinventory1.getOwner() != null) { ++ // destinationInventory = iinventory1.getOwner().getInventory(); ++ // } else { ++ // destinationInventory = new CraftInventory(iinventory); ++ // } ++ ++ // InventoryMoveItemEvent event = new InventoryMoveItemEvent(iinventory.getOwner().getInventory(), oitemstack.clone(), destinationInventory, true); ++ // world.getCraftServer().getPluginManager().callEvent(event); ++ // if (event.isCancelled()) { ++ // hopper.setItem(i, itemstack); ++ // hopper.setCooldown(world.spigotConfig.hopperTransfer); // Spigot ++ // return false; ++ // } ++ // int origCount = event.getItem().getAmount(); // Spigot ++ // ItemStack itemstack1 = HopperBlockEntity.addItem(iinventory, iinventory1, CraftItemStack.asNMSCopy(event.getItem()), enumdirection); + // CraftBukkit end + +- if (itemstack1.isEmpty()) { +- iinventory1.setChanged(); +- return true; +- } ++ // if (itemstack1.isEmpty()) { ++ // iinventory1.setChanged(); ++ // return true; ++ // } + +- itemstack.shrink(origCount - itemstack1.getCount()); // Spigot +- iinventory.setItem(i, itemstack); +- } +- } ++ // itemstack.shrink(origCount - itemstack1.getCount()); // Spigot ++ // iinventory.setItem(i, itemstack); ++ // } ++ // } + +- return false; ++ // return false; ++ // Paper end + } + } + } +@@ -0,0 +0,0 @@ public class HopperBlockEntity extends RandomizableContainerBlockEntity implemen + } + + private static boolean isFullContainer(Container inventory, Direction direction) { +- return HopperBlockEntity.getSlots(inventory, direction).allMatch((i) -> { +- ItemStack itemstack = inventory.getItem(i); +- +- return itemstack.getCount() >= itemstack.getMaxStackSize(); +- }); ++ return allMatch(inventory, direction, STACK_SIZE_TEST); // Paper - no streams + } + + private static boolean isEmptyContainer(Container inv, Direction facing) { +- return HopperBlockEntity.getSlots(inv, facing).allMatch((i) -> { +- return inv.getItem(i).isEmpty(); +- }); ++ return allMatch(inv, facing, IS_EMPTY_TEST); + } + + public static boolean suckInItems(Level world, Hopper hopper) { +@@ -0,0 +0,0 @@ public class HopperBlockEntity extends RandomizableContainerBlockEntity implemen + if (iinventory != null) { + Direction enumdirection = Direction.DOWN; + +- return HopperBlockEntity.isEmptyContainer(iinventory, enumdirection) ? false : HopperBlockEntity.getSlots(iinventory, enumdirection).anyMatch((i) -> { +- return HopperBlockEntity.a(hopper, iinventory, i, enumdirection, world); // Spigot ++ // Paper start - optimize hoppers and remove streams ++ skipPullModeEventFire = skipHopperEvents; ++ return !HopperBlockEntity.isEmptyContainer(iinventory, enumdirection) && anyMatch(iinventory, enumdirection, (item, i) -> { ++ // Logic copied from below to avoid extra getItem calls ++ if (!item.isEmpty() && canTakeItemFromContainer(hopper, iinventory, item, i, enumdirection)) { ++ return hopperPull(world, hopper, iinventory, item, i); ++ } else { ++ return false; ++ } ++ // Paper end + }); + } else { + Iterator iterator = HopperBlockEntity.getItemsAtAndAbove(world, hopper).iterator(); +@@ -0,0 +0,0 @@ public class HopperBlockEntity extends RandomizableContainerBlockEntity implemen + } + } + ++ @io.papermc.paper.annotation.DoNotUse // Paper - method unused as logic is inlined above + private static boolean a(Hopper ihopper, Container iinventory, int i, Direction enumdirection, Level world) { // Spigot + ItemStack itemstack = iinventory.getItem(i); + +- if (!itemstack.isEmpty() && HopperBlockEntity.canTakeItemFromContainer(ihopper, iinventory, itemstack, i, enumdirection)) { +- ItemStack itemstack1 = itemstack.copy(); +- // ItemStack itemstack2 = addItem(iinventory, ihopper, iinventory.removeItem(i, 1), (EnumDirection) null); +- // CraftBukkit start - Call event on collection of items from inventories into the hopper +- CraftItemStack oitemstack = CraftItemStack.asCraftMirror(iinventory.removeItem(i, world.spigotConfig.hopperAmount)); // Spigot +- +- Inventory sourceInventory; +- // Have to special case large chests as they work oddly +- if (iinventory instanceof CompoundContainer) { +- sourceInventory = new org.bukkit.craftbukkit.inventory.CraftInventoryDoubleChest((CompoundContainer) iinventory); +- } else if (iinventory.getOwner() != null) { +- sourceInventory = iinventory.getOwner().getInventory(); +- } else { +- sourceInventory = new CraftInventory(iinventory); +- } +- +- InventoryMoveItemEvent event = new InventoryMoveItemEvent(sourceInventory, oitemstack.clone(), ihopper.getOwner().getInventory(), false); +- +- Bukkit.getServer().getPluginManager().callEvent(event); +- if (event.isCancelled()) { +- iinventory.setItem(i, itemstack1); +- +- if (ihopper instanceof HopperBlockEntity) { +- ((HopperBlockEntity) ihopper).setCooldown(world.spigotConfig.hopperTransfer); // Spigot +- } +- +- return false; +- } +- int origCount = event.getItem().getAmount(); // Spigot +- ItemStack itemstack2 = HopperBlockEntity.addItem(iinventory, ihopper, CraftItemStack.asNMSCopy(event.getItem()), null); +- // CraftBukkit end +- +- if (itemstack2.isEmpty()) { +- iinventory.setChanged(); +- return true; +- } +- +- itemstack1.shrink(origCount - itemstack2.getCount()); // Spigot +- iinventory.setItem(i, itemstack1); ++ // Paper start - replace pull logic; MAKE SURE TO CHECK FOR DIFFS WHEN UPDATING ++ if (!itemstack.isEmpty() && HopperBlockEntity.canTakeItemFromContainer(ihopper, iinventory, itemstack, i, enumdirection)) { // If this logic changes, update above. this is left unused incase reflective plugins ++ return hopperPull(world, ihopper, iinventory, itemstack, i); ++ // ItemStack itemstack1 = itemstack.copy(); ++ // // ItemStack itemstack2 = addItem(iinventory, ihopper, iinventory.removeItem(i, 1), (EnumDirection) null); ++ // // CraftBukkit start - Call event on collection of items from inventories into the hopper ++ // CraftItemStack oitemstack = CraftItemStack.asCraftMirror(iinventory.removeItem(i, world.spigotConfig.hopperAmount)); // Spigot ++ ++ // Inventory sourceInventory; ++ // // Have to special case large chests as they work oddly ++ // if (iinventory instanceof CompoundContainer) { ++ // sourceInventory = new org.bukkit.craftbukkit.inventory.CraftInventoryDoubleChest((CompoundContainer) iinventory); ++ // } else if (iinventory.getOwner() != null) { ++ // sourceInventory = iinventory.getOwner().getInventory(); ++ // } else { ++ // sourceInventory = new CraftInventory(iinventory); ++ // } ++ ++ // InventoryMoveItemEvent event = new InventoryMoveItemEvent(sourceInventory, oitemstack.clone(), ihopper.getOwner().getInventory(), false); ++ ++ // Bukkit.getServer().getPluginManager().callEvent(event); ++ // if (event.isCancelled()) { ++ // iinventory.setItem(i, itemstack1); ++ ++ // if (ihopper instanceof HopperBlockEntity) { ++ // ((HopperBlockEntity) ihopper).setCooldown(world.spigotConfig.hopperTransfer); // Spigot ++ // } ++ ++ // return false; ++ // } ++ // int origCount = event.getItem().getAmount(); // Spigot ++ // ItemStack itemstack2 = HopperBlockEntity.addItem(iinventory, ihopper, CraftItemStack.asNMSCopy(event.getItem()), null); ++ // // CraftBukkit end ++ ++ // if (itemstack2.isEmpty()) { ++ // iinventory.setChanged(); ++ // return true; ++ // } ++ ++ // itemstack1.shrink(origCount - itemstack2.getCount()); // Spigot ++ // iinventory.setItem(i, itemstack1); ++ // Paper end + } + + return false; +@@ -0,0 +0,0 @@ public class HopperBlockEntity extends RandomizableContainerBlockEntity implemen + public static boolean addItem(Container inventory, ItemEntity itemEntity) { + boolean flag = false; + // CraftBukkit start +- InventoryPickupItemEvent event = new InventoryPickupItemEvent(inventory.getOwner().getInventory(), (org.bukkit.entity.Item) itemEntity.getBukkitEntity()); ++ InventoryPickupItemEvent event = new InventoryPickupItemEvent(getInventory(inventory), (org.bukkit.entity.Item) itemEntity.getBukkitEntity()); // Paper - use getInventory() to avoid snapshot creation + itemEntity.level.getCraftServer().getPluginManager().callEvent(event); + if (event.isCancelled()) { + return false; +@@ -0,0 +0,0 @@ public class HopperBlockEntity extends RandomizableContainerBlockEntity implemen + stack = stack.split(to.getMaxStackSize()); + } + // Spigot end ++ ignoreTileUpdates = true; // Paper + to.setItem(slot, stack); ++ ignoreTileUpdates = false; // Paper + stack = leftover; // Paper + flag = true; + } else if (HopperBlockEntity.canMergeItems(itemstack1, stack)) { +@@ -0,0 +0,0 @@ public class HopperBlockEntity extends RandomizableContainerBlockEntity implemen + } + + public static List getItemsAtAndAbove(Level world, Hopper hopper) { +- return (List) hopper.getSuckShape().toAabbs().stream().flatMap((axisalignedbb) -> { +- return world.getEntitiesOfClass(ItemEntity.class, axisalignedbb.move(hopper.getLevelX() - 0.5D, hopper.getLevelY() - 0.5D, hopper.getLevelZ() - 0.5D), EntitySelector.ENTITY_STILL_ALIVE).stream(); +- }).collect(Collectors.toList()); ++ // Paper start - Optimize item suck in. remove streams, restore 1.12 checks. Seriously checking the bowl?! ++ double x = hopper.getLevelX(); ++ double y = hopper.getLevelY(); ++ double z = hopper.getLevelZ(); ++ AABB bb = new AABB(x - 0.5D, y, z - 0.5D, x + 0.5D, y + 1.5D, z + 0.5D); ++ return world.getEntitiesOfClass(ItemEntity.class, bb, Entity::isAlive); ++ // Paper end + } + + @Nullable + public static Container getContainerAt(Level world, BlockPos pos) { +- return HopperBlockEntity.getContainerAt(world, (double) pos.getX() + 0.5D, (double) pos.getY() + 0.5D, (double) pos.getZ() + 0.5D); ++ return HopperBlockEntity.getContainerAt(world, (double) pos.getX() + 0.5D, (double) pos.getY() + 0.5D, (double) pos.getZ() + 0.5D, true); // Paper + } + + @Nullable + private static Container getContainerAt(Level world, double x, double y, double z) { ++ // Paper start - add optimizeEntities parameter ++ return HopperBlockEntity.getContainerAt(world, x, y, z, false); ++ } ++ @Nullable ++ private static Container getContainerAt(Level world, double x, double y, double z, final boolean optimizeEntities) { ++ // Paper end - add optimizeEntities parameter + Object object = null; + BlockPos blockposition = BlockPos.containing(x, y, z); + if ( !world.spigotConfig.hopperCanLoadChunks && !world.hasChunkAt( blockposition ) ) return null; // Spigot +@@ -0,0 +0,0 @@ public class HopperBlockEntity extends RandomizableContainerBlockEntity implemen + } + } + +- if (object == null) { ++ if (object == null && (!optimizeEntities || !world.paperConfig().hopper.ignoreOccludingBlocks || !org.bukkit.craftbukkit.util.CraftMagicNumbers.getMaterial(block).isOccluding())) { // Paper + List list = world.getEntities((Entity) null, new AABB(x - 0.5D, y - 0.5D, z - 0.5D, x + 0.5D, y + 0.5D, z + 0.5D), EntitySelector.CONTAINER_ENTITY_SELECTOR); + + if (!list.isEmpty()) { +diff --git a/src/main/java/net/minecraft/world/level/block/entity/RandomizableContainerBlockEntity.java b/src/main/java/net/minecraft/world/level/block/entity/RandomizableContainerBlockEntity.java +index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644 +--- a/src/main/java/net/minecraft/world/level/block/entity/RandomizableContainerBlockEntity.java ++++ b/src/main/java/net/minecraft/world/level/block/entity/RandomizableContainerBlockEntity.java +@@ -0,0 +0,0 @@ public abstract class RandomizableContainerBlockEntity extends BaseContainerBloc + @Override + public boolean isEmpty() { + this.unpackLootTable((Player)null); +- return this.getItems().stream().allMatch(ItemStack::isEmpty); ++ // Paper start ++ for (final ItemStack itemStack : this.getItems()) { ++ if (!itemStack.isEmpty()) { ++ return false; ++ } ++ } ++ return true; ++ // Paper end + } + + @Override + public ItemStack getItem(int slot) { +- this.unpackLootTable((Player)null); ++ if (slot == 0) this.unpackLootTable((Player)null); // Paper + return this.getItems().get(slot); + } +