diff options
Diffstat (limited to 'patches/server/0342-Optimize-Hoppers.patch')
| -rw-r--r-- | patches/server/0342-Optimize-Hoppers.patch | 482 |
1 files changed, 482 insertions, 0 deletions
diff --git a/patches/server/0342-Optimize-Hoppers.patch b/patches/server/0342-Optimize-Hoppers.patch new file mode 100644 index 0000000000..66df27dd80 --- /dev/null +++ b/patches/server/0342-Optimize-Hoppers.patch @@ -0,0 +1,482 @@ +From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 +From: Aikar <[email protected]> +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/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java +index 2f060bc6b108df0c4fb07758005a911d92c09057..73d82e20d7353120a36815dc94be8c2253b2602d 100644 +--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java ++++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java +@@ -506,5 +506,17 @@ public class PaperWorldConfig { + private void entitiesTargetWithFollowRange() { + entitiesTargetWithFollowRange = getBoolean("entities-target-with-follow-range", entitiesTargetWithFollowRange); + } ++ ++ public boolean cooldownHopperWhenFull = true; ++ public boolean disableHopperMoveEvents = false; ++ public boolean hoppersIgnoreOccludingBlocks = false; ++ private void hopperOptimizations() { ++ cooldownHopperWhenFull = getBoolean("hopper.cooldown-when-full", cooldownHopperWhenFull); ++ log("Cooldown Hoppers when Full: " + (cooldownHopperWhenFull ? "enabled" : "disabled")); ++ disableHopperMoveEvents = getBoolean("hopper.disable-move-event", disableHopperMoveEvents); ++ log("Hopper Move Item Events: " + (disableHopperMoveEvents ? "disabled" : "enabled")); ++ hoppersIgnoreOccludingBlocks = getBoolean("hopper.ignore-occluding-blocks", hoppersIgnoreOccludingBlocks); ++ log("Hopper Ignore Container Entities inside Occluding Blocks: " + (hoppersIgnoreOccludingBlocks ? "enabled" : "disabled")); ++ } + } + +diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java +index e75ca992a5fc0cc16b5d365287f63215c124759b..8e49a648671b4d4c0d07af35ba6558b63bbf28ee 100644 +--- a/src/main/java/net/minecraft/server/MinecraftServer.java ++++ b/src/main/java/net/minecraft/server/MinecraftServer.java +@@ -1455,6 +1455,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa + while (iterator.hasNext()) { + ServerLevel worldserver = (ServerLevel) iterator.next(); + worldserver.hasPhysicsEvent = org.bukkit.event.block.BlockPhysicsEvent.getHandlerList().getRegisteredListeners().length > 0; // Paper ++ net.minecraft.world.level.block.entity.HopperBlockEntity.skipHopperEvents = worldserver.paperConfig.disableHopperMoveEvents || org.bukkit.event.inventory.InventoryMoveItemEvent.getHandlerList().getRegisteredListeners().length == 0; // Paper + + this.profiler.push(() -> { + return worldserver + " " + worldserver.dimension().location(); +diff --git a/src/main/java/net/minecraft/world/item/ItemStack.java b/src/main/java/net/minecraft/world/item/ItemStack.java +index f1289d7251783c5203828c2b76785dd22c7e2992..b78769cf6a70fb7513ea8d3302cb2dd4bf242752 100644 +--- a/src/main/java/net/minecraft/world/item/ItemStack.java ++++ b/src/main/java/net/minecraft/world/item/ItemStack.java +@@ -613,11 +613,12 @@ public final class ItemStack { + return this.getItem().interactLivingEntity(this, user, entity, hand); + } + +- public ItemStack copy() { +- if (this.isEmpty()) { ++ public ItemStack copy() { return cloneItemStack(false); } // Paper ++ public ItemStack cloneItemStack(boolean origItem) { // Paper ++ if (!origItem && this.isEmpty()) { // Paper + return ItemStack.EMPTY; + } else { +- ItemStack itemstack = new ItemStack(this.getItem(), this.count); ++ ItemStack itemstack = new ItemStack(origItem ? 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 a69bbc11b9e003aed1630a6f5cdbca521deb6ff5..e838abb6d258a1ab47e95572cf4c30c6ca6144b4 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 +@@ -70,6 +70,7 @@ public abstract class BlockEntity implements io.papermc.paper.util.KeyedObject { + getMinecraftKey(); // Try to load if it doesn't exists. + return tileEntityKeyString; + } ++ static boolean IGNORE_TILE_UPDATES = false; + // Paper end + + @Nullable +@@ -182,6 +183,7 @@ public abstract class BlockEntity implements io.papermc.paper.util.KeyedObject { + + public void setChanged() { + if (this.level != null) { ++ if (IGNORE_TILE_UPDATES) return; // Paper + BlockEntity.setChanged(this.level, this.worldPosition, this.blockState); + } + +diff --git a/src/main/java/net/minecraft/world/level/block/entity/Hopper.java b/src/main/java/net/minecraft/world/level/block/entity/Hopper.java +index a05acf709735b40ca86f978508c63a86065fd405..6a1405a8630e90db3b5a3c9152259ba6f5f0c784 100644 +--- a/src/main/java/net/minecraft/world/level/block/entity/Hopper.java ++++ b/src/main/java/net/minecraft/world/level/block/entity/Hopper.java +@@ -14,6 +14,8 @@ public interface Hopper extends Container { + return SUCK; + } + ++ default net.minecraft.core.BlockPos getBlockPosition() { return new net.minecraft.core.BlockPos(getLevelX(), getLevelY(), getLevelZ()); } // Paper ++ + double getLevelX(); + + double getLevelY(); +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 43b0e6a4c2bcd1d2026add39f64b5993eb614d40..ae680111d01470881e5dc4914cc7e8e82a463aaa 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 +@@ -3,7 +3,6 @@ package net.minecraft.world.level.block.entity; + import java.util.Iterator; + import java.util.List; + import java.util.function.BooleanSupplier; +-import java.util.stream.Collectors; + import java.util.stream.IntStream; + import javax.annotation.Nullable; + import net.minecraft.core.BlockPos; +@@ -33,7 +32,6 @@ import net.minecraft.world.level.block.state.BlockState; + import net.minecraft.world.phys.AABB; + import net.minecraft.world.phys.shapes.BooleanOp; + import net.minecraft.world.phys.shapes.Shapes; +-import org.bukkit.Bukkit; + import org.bukkit.craftbukkit.entity.CraftHumanEntity; + import org.bukkit.craftbukkit.inventory.CraftItemStack; + import org.bukkit.entity.HumanEntity; +@@ -191,6 +189,158 @@ public class HopperBlockEntity extends RandomizableContainerBlockEntity implemen + + return false; + } ++ // Paper start - Optimize Hoppers ++ private static boolean skipPullModeEventFire = false; ++ private static boolean skipPushModeEventFire = false; ++ public static boolean skipHopperEvents = false; ++ ++ private static boolean hopperPush(Level level, BlockPos pos, Container destination, Direction enumdirection, HopperBlockEntity hopper) { ++ skipPushModeEventFire = skipHopperEvents; ++ boolean foundItem = false; ++ for (int i = 0; i < hopper.getContainerSize(); ++i) { ++ ItemStack item = hopper.getItem(i); ++ if (!item.isEmpty()) { ++ foundItem = true; ++ ItemStack origItemStack = item; ++ ItemStack itemstack = origItemStack; ++ ++ final int origCount = origItemStack.getCount(); ++ final int moved = Math.min(level.spigotConfig.hopperAmount, origCount); ++ origItemStack.setCount(moved); ++ ++ // 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) { ++ itemstack = callPushMoveEvent(destination, itemstack, hopper); ++ if (itemstack == null) { // cancelled ++ origItemStack.setCount(origCount); ++ return false; ++ } ++ } ++ final ItemStack itemstack2 = addItem(hopper, destination, itemstack, enumdirection); ++ final int remaining = itemstack2.getCount(); ++ if (remaining != moved) { ++ origItemStack = origItemStack.cloneItemStack(true); ++ origItemStack.setCount(origCount); ++ if (!origItemStack.isEmpty()) { ++ origItemStack.setCount(origCount - moved + remaining); ++ } ++ hopper.setItem(i, origItemStack); ++ destination.setChanged(); ++ return true; ++ } ++ origItemStack.setCount(origCount); ++ } ++ } ++ if (foundItem && level.paperConfig.cooldownHopperWhenFull) { // Inventory was full - cooldown ++ hopper.setCooldown(level.spigotConfig.hopperTransfer); ++ } ++ return false; ++ } ++ ++ private static boolean hopperPull(Level level, Hopper ihopper, Container iinventory, ItemStack origItemStack, int i) { ++ ItemStack itemstack = origItemStack; ++ final int origCount = origItemStack.getCount(); ++ final int moved = Math.min(level.spigotConfig.hopperAmount, origCount); ++ itemstack.setCount(moved); ++ ++ if (!skipPullModeEventFire) { ++ itemstack = callPullMoveEvent(ihopper, iinventory, itemstack); ++ if (itemstack == null) { // cancelled ++ origItemStack.setCount(origCount); ++ // 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 itemstack2 = addItem(iinventory, ihopper, itemstack, null); ++ final int remaining = itemstack2.getCount(); ++ if (remaining != moved) { ++ origItemStack = origItemStack.cloneItemStack(true); ++ origItemStack.setCount(origCount); ++ if (!origItemStack.isEmpty()) { ++ origItemStack.setCount(origCount - moved + remaining); ++ } ++ IGNORE_TILE_UPDATES = true; ++ iinventory.setItem(i, origItemStack); ++ IGNORE_TILE_UPDATES = false; ++ iinventory.setChanged(); ++ return true; ++ } ++ origItemStack.setCount(origCount); ++ ++ if (level.paperConfig.cooldownHopperWhenFull) { ++ cooldownHopper(ihopper); ++ } ++ ++ return false; ++ } ++ ++ private static ItemStack callPushMoveEvent(Container iinventory, ItemStack itemstack, HopperBlockEntity hopper) { ++ Inventory destinationInventory = getInventory(iinventory); ++ InventoryMoveItemEvent event = new InventoryMoveItemEvent(hopper.getOwner(false).getInventory(), ++ CraftItemStack.asCraftMirror(itemstack), destinationInventory, true); ++ 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; ++ } ++ } ++ ++ private static ItemStack callPullMoveEvent(Hopper hopper, Container iinventory, ItemStack itemstack) { ++ Inventory sourceInventory = getInventory(iinventory); ++ Inventory destination = getInventory(hopper); ++ ++ InventoryMoveItemEvent event = new InventoryMoveItemEvent(sourceInventory, ++ // Mirror is safe as we no plugins ever use this item ++ CraftItemStack.asCraftMirror(itemstack), destination, false); ++ 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(Container iinventory) { ++ 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 instanceof BlockEntity) { ++ sourceInventory = ((BlockEntity) iinventory).getOwner(false).getInventory(); ++ } else { ++ sourceInventory = iinventory.getOwner().getInventory(); ++ } ++ return sourceInventory; ++ } ++ ++ private static void cooldownHopper(Hopper hopper) { ++ if (hopper instanceof HopperBlockEntity blockEntity) { ++ blockEntity.setCooldown(blockEntity.getLevel().spigotConfig.hopperTransfer); ++ } else if (hopper instanceof MinecartHopper blockEntity) { ++ blockEntity.setCooldown(blockEntity.getLevel().spigotConfig.hopperTransfer / 2); ++ } ++ } ++ // Paper end + + private static boolean ejectItems(Level world, BlockPos blockposition, BlockState iblockdata, Container iinventory, HopperBlockEntity hopper) { // CraftBukkit + Container iinventory1 = HopperBlockEntity.getAttachedContainer(world, blockposition, iblockdata); +@@ -203,6 +353,7 @@ public class HopperBlockEntity extends RandomizableContainerBlockEntity implemen + if (HopperBlockEntity.isFullContainer(iinventory1, enumdirection)) { + return false; + } else { ++ return hopperPush(world, blockposition, iinventory1, enumdirection, hopper); /* // Paper - disable rest + for (int i = 0; i < iinventory.getContainerSize(); ++i) { + if (!iinventory.getItem(i).isEmpty()) { + ItemStack itemstack = iinventory.getItem(i).copy(); +@@ -240,7 +391,7 @@ public class HopperBlockEntity extends RandomizableContainerBlockEntity implemen + } + } + +- return false; ++ return false;*/ // Paper - end commenting out replaced block for Hopper Optimizations + } + } + } +@@ -250,27 +401,68 @@ 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(); +- }); ++ // Paper start ++ return allMatch(inv, facing, IS_EMPTY_TEST); ++ } ++ private static boolean allMatch(Container iinventory, Direction enumdirection, java.util.function.BiPredicate<ItemStack, Integer> 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<ItemStack, Integer> 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<ItemStack, Integer> STACK_SIZE_TEST = (itemstack, i) -> itemstack.getCount() >= itemstack.getMaxStackSize(); ++ private static final java.util.function.BiPredicate<ItemStack, Integer> IS_EMPTY_TEST = (itemstack, i) -> itemstack.isEmpty(); ++ // Paper end ++ + public static boolean suckInItems(Level world, Hopper hopper) { + Container iinventory = HopperBlockEntity.getSourceContainer(world, hopper); + + 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(iinventory, item, i, enumdirection)) { ++ return hopperPull(world, hopper, iinventory, item, i); ++ } else { ++ return false; ++ } ++ // Paper end + }); + } else { + Iterator iterator = HopperBlockEntity.getItemsAtAndAbove(world, hopper).iterator(); +@@ -289,10 +481,12 @@ public class HopperBlockEntity extends RandomizableContainerBlockEntity implemen + } + } + ++ // 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(iinventory, itemstack, i, enumdirection)) { ++ if (!itemstack.isEmpty() && HopperBlockEntity.canTakeItemFromContainer(iinventory, itemstack, i, enumdirection)) { // If this logic changes, update above. this is left inused incase reflective plugins ++ return hopperPull(world, ihopper, iinventory, itemstack, i); /* // Paper - disable rest + 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 +@@ -329,7 +523,7 @@ public class HopperBlockEntity extends RandomizableContainerBlockEntity implemen + } + + itemstack1.shrink(origCount - itemstack2.getCount()); // Spigot +- iinventory.setItem(i, itemstack1); ++ iinventory.setItem(i, itemstack1);*/ // Paper - end commenting out replaced block for Hopper Optimizations + } + + return false; +@@ -338,7 +532,7 @@ 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; +@@ -397,7 +591,9 @@ public class HopperBlockEntity extends RandomizableContainerBlockEntity implemen + stack = stack.split(to.getMaxStackSize()); + } + // Spigot end ++ IGNORE_TILE_UPDATES = true; // Paper + to.setItem(slot, stack); ++ IGNORE_TILE_UPDATES = false; // Paper + stack = ItemStack.EMPTY; + flag = true; + } else if (HopperBlockEntity.canMergeItems(itemstack1, stack)) { +@@ -448,18 +644,23 @@ public class HopperBlockEntity extends RandomizableContainerBlockEntity implemen + } + + public static List<ItemEntity> 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 d0 = hopper.getLevelX(); ++ double d1 = hopper.getLevelY(); ++ double d2 = hopper.getLevelZ(); ++ AABB bb = new AABB(d0 - 0.5D, d1, d2 - 0.5D, d0 + 0.5D, d1 + 1.5D, d2 + 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 + } + ++ public static Container getContainerAt(Level world, double x, double y, double z) { return getContainerAt(world, x, y, z, false); } // Paper - overload to default false + @Nullable +- private static Container getContainerAt(Level world, double x, double y, double z) { ++ private static Container getContainerAt(Level world, double x, double y, double z, boolean optimizeEntities) { + Object object = null; + BlockPos blockposition = new BlockPos(x, y, z); + if ( !world.hasChunkAt( blockposition ) ) return null; // Spigot +@@ -479,7 +680,7 @@ public class HopperBlockEntity extends RandomizableContainerBlockEntity implemen + } + } + +- if (object == null) { ++ if (object == null && (!optimizeEntities || !world.paperConfig.hoppersIgnoreOccludingBlocks || !org.bukkit.craftbukkit.util.CraftMagicNumbers.getMaterial(block).isOccluding())) { // Paper + List<Entity> 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 f23fff80d07ac7d06715efe67cb49ebbe704967b..ed3518fe7c841d9e1a9c97626acaa3d765a6d76f 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 +@@ -95,12 +95,19 @@ public abstract class RandomizableContainerBlockEntity extends BaseContainerBloc + @Override + public boolean isEmpty() { + this.unpackLootTable((Player)null); +- return this.getItems().stream().allMatch(ItemStack::isEmpty); ++ // Paper start ++ for (ItemStack itemStack : this.getItems()) { ++ if (!itemStack.isEmpty()) { ++ return false; ++ } ++ } ++ // Paper end ++ return true; + } + + @Override + public ItemStack getItem(int slot) { +- this.unpackLootTable((Player)null); ++ if (slot == 0) this.unpackLootTable((Player) null); // Paper + return this.getItems().get(slot); + } + |