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Paper/patches/server/0259-Implement-an-API-for-CanPlaceOn-and-CanDestroy-NBT-v.patch
Spottedleaf 01a13871de
Rewrite chunk system (#8177) 
Patch documentation to come

Issues with the old system that are fixed now:
- World generation does not scale with cpu cores effectively.
- Relies on the main thread for scheduling and maintaining chunk state, dropping chunk load/generate rates at lower tps.
- Unreliable prioritisation of chunk gen/load calls that block the main thread.
- Shutdown logic is utterly unreliable, as it has to wait for all chunks to unload - is it guaranteed that the chunk system is in a state on shutdown that it can reliably do this? Watchdog shutdown also typically failed due to thread checks, which is now resolved.
- Saving of data is not unified (i.e can save chunk data without saving entity data, poses problems for desync if shutdown is really abnormal.
- Entities are not loaded with chunks. This caused quite a bit of headache for Chunk#getEntities API, but now the new chunk system loads entities with chunks so that they are ready whenever the chunk loads in. Effectively brings the behavior back to 1.16 era, but still storing entities in their own separate regionfiles.

The above list is not complete. The patch documentation will complete it.

New chunk system hard relies on starlight and dataconverter, and most importantly the new concurrent utilities in ConcurrentUtil.

Some of the old async chunk i/o interface (i.e the old file io thread reroutes _some_ calls to the new file io thread) is kept for plugin compat reasons. It will be removed in the next major version of minecraft.

The old legacy chunk system patches have been moved to the removed folder in case we need them again.
2022-09-26 01:02:51 -07:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Mark Vainomaa <mikroskeem@mikroskeem.eu>
Date: Wed, 12 Sep 2018 18:53:55 +0300
Subject: [PATCH] Implement an API for CanPlaceOn and CanDestroy NBT values
diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java
index 01ceb8de8411193fa407bf19bbd25a4bf44765d3..4304ee35a9bd912c2ae4058febf22f0eea25adbd 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java
@@ -83,6 +83,12 @@ import org.bukkit.persistence.PersistentDataContainer;
import static org.spigotmc.ValidateUtils.*;
// Spigot end
+// Paper start
+import com.destroystokyo.paper.Namespaced;
+import com.destroystokyo.paper.NamespacedTag;
+import java.util.Collections;
+// Paper end
+
/**
* Children must include the following:
*
@@ -268,6 +274,10 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable, BlockDataMeta {
@Specific(Specific.To.NBT)
static final ItemMetaKey BLOCK_DATA = new ItemMetaKey("BlockStateTag");
static final ItemMetaKey BUKKIT_CUSTOM_TAG = new ItemMetaKey("PublicBukkitValues");
+ // Paper start - Implement an API for CanPlaceOn and CanDestroy NBT values
+ static final ItemMetaKey CAN_DESTROY = new ItemMetaKey("CanDestroy");
+ static final ItemMetaKey CAN_PLACE_ON = new ItemMetaKey("CanPlaceOn");
+ // Paper end
// We store the raw original JSON representation of all text data. See SPIGOT-5063, SPIGOT-5656, SPIGOT-5304
private String displayName;
@@ -281,6 +291,10 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable, BlockDataMeta {
private int hideFlag;
private boolean unbreakable;
private int damage;
+ // Paper start - Implement an API for CanPlaceOn and CanDestroy NBT values
+ private Set<Namespaced> placeableKeys = Sets.newHashSet();
+ private Set<Namespaced> destroyableKeys = Sets.newHashSet();
+ // Paper end
private static final Set<String> HANDLED_TAGS = Sets.newHashSet();
private static final CraftPersistentDataTypeRegistry DATA_TYPE_REGISTRY = new CraftPersistentDataTypeRegistry();
@@ -318,6 +332,15 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable, BlockDataMeta {
this.hideFlag = meta.hideFlag;
this.unbreakable = meta.unbreakable;
this.damage = meta.damage;
+ // Paper start - Implement an API for CanPlaceOn and CanDestroy NBT values
+ if (meta.hasPlaceableKeys()) {
+ this.placeableKeys = new java.util.HashSet<>(meta.placeableKeys);
+ }
+
+ if (meta.hasDestroyableKeys()) {
+ this.destroyableKeys = new java.util.HashSet<>(meta.destroyableKeys);
+ }
+ // Paper end
this.unhandledTags.putAll(meta.unhandledTags);
this.persistentDataContainer.putAll(meta.persistentDataContainer.getRaw());
@@ -381,6 +404,31 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable, BlockDataMeta {
this.persistentDataContainer.put(key, compound.get(key).copy());
}
}
+ // Paper start - Implement an API for CanPlaceOn and CanDestroy NBT values
+ if (tag.contains(CAN_DESTROY.NBT)) {
+ ListTag list = tag.getList(CAN_DESTROY.NBT, CraftMagicNumbers.NBT.TAG_STRING);
+ for (int i = 0; i < list.size(); i++) {
+ Namespaced namespaced = this.deserializeNamespaced(list.getString(i));
+ if (namespaced == null) {
+ continue;
+ }
+
+ this.destroyableKeys.add(namespaced);
+ }
+ }
+
+ if (tag.contains(CAN_PLACE_ON.NBT)) {
+ ListTag list = tag.getList(CAN_PLACE_ON.NBT, CraftMagicNumbers.NBT.TAG_STRING);
+ for (int i = 0; i < list.size(); i++) {
+ Namespaced namespaced = this.deserializeNamespaced(list.getString(i));
+ if (namespaced == null) {
+ continue;
+ }
+
+ this.placeableKeys.add(namespaced);
+ }
+ }
+ // Paper end
Set<String> keys = tag.getAllKeys();
for (String key : keys) {
@@ -519,6 +567,34 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable, BlockDataMeta {
this.setDamage(damage);
}
+ // Paper start - Implement an API for CanPlaceOn and CanDestroy NBT values
+ Iterable<?> canPlaceOnSerialized = SerializableMeta.getObject(Iterable.class, map, CAN_PLACE_ON.BUKKIT, true);
+ if (canPlaceOnSerialized != null) {
+ for (Object canPlaceOnElement : canPlaceOnSerialized) {
+ String canPlaceOnRaw = (String) canPlaceOnElement;
+ Namespaced value = this.deserializeNamespaced(canPlaceOnRaw);
+ if (value == null) {
+ continue;
+ }
+
+ this.placeableKeys.add(value);
+ }
+ }
+
+ Iterable<?> canDestroySerialized = SerializableMeta.getObject(Iterable.class, map, CAN_DESTROY.BUKKIT, true);
+ if (canDestroySerialized != null) {
+ for (Object canDestroyElement : canDestroySerialized) {
+ String canDestroyRaw = (String) canDestroyElement;
+ Namespaced value = this.deserializeNamespaced(canDestroyRaw);
+ if (value == null) {
+ continue;
+ }
+
+ this.destroyableKeys.add(value);
+ }
+ }
+ // Paper end
+
String internal = SerializableMeta.getString(map, "internal", true);
if (internal != null) {
ByteArrayInputStream buf = new ByteArrayInputStream(Base64.getDecoder().decode(internal));
@@ -647,6 +723,23 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable, BlockDataMeta {
if (this.hasDamage()) {
itemTag.putInt(DAMAGE.NBT, damage);
}
+ // Paper start - Implement an API for CanPlaceOn and CanDestroy NBT values
+ if (hasPlaceableKeys()) {
+ List<String> items = this.placeableKeys.stream()
+ .map(this::serializeNamespaced)
+ .collect(java.util.stream.Collectors.toList());
+
+ itemTag.put(CAN_PLACE_ON.NBT, createNonComponentStringList(items));
+ }
+
+ if (hasDestroyableKeys()) {
+ List<String> items = this.destroyableKeys.stream()
+ .map(this::serializeNamespaced)
+ .collect(java.util.stream.Collectors.toList());
+
+ itemTag.put(CAN_DESTROY.NBT, createNonComponentStringList(items));
+ }
+ // Paper end
for (Map.Entry<String, Tag> e : this.unhandledTags.entrySet()) {
itemTag.put(e.getKey(), e.getValue());
@@ -663,6 +756,21 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable, BlockDataMeta {
}
}
+ // Paper start
+ static ListTag createNonComponentStringList(List<String> list) {
+ if (list == null || list.isEmpty()) {
+ return null;
+ }
+
+ ListTag tagList = new ListTag();
+ for (String value : list) {
+ tagList.add(StringTag.valueOf(value)); // Paper - NBTTagString.of(String str)
+ }
+
+ return tagList;
+ }
+ // Paper end
+
ListTag createStringList(List<String> list) {
if (list == null) {
return null;
@@ -746,7 +854,7 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable, BlockDataMeta {
@Overridden
boolean isEmpty() {
- return !(this.hasDisplayName() || this.hasLocalizedName() || this.hasEnchants() || (this.lore != null) || this.hasCustomModelData() || this.hasBlockData() || this.hasRepairCost() || !this.unhandledTags.isEmpty() || !this.persistentDataContainer.isEmpty() || this.hideFlag != 0 || this.isUnbreakable() || this.hasDamage() || this.hasAttributeModifiers());
+ return !(this.hasDisplayName() || this.hasLocalizedName() || this.hasEnchants() || (this.lore != null) || this.hasCustomModelData() || this.hasBlockData() || this.hasRepairCost() || !this.unhandledTags.isEmpty() || !this.persistentDataContainer.isEmpty() || this.hideFlag != 0 || this.isUnbreakable() || this.hasDamage() || this.hasAttributeModifiers() || this.hasPlaceableKeys() || this.hasDestroyableKeys()); // Paper - Implement an API for CanPlaceOn and CanDestroy NBT values
}
// Paper start
@@ -1177,7 +1285,11 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable, BlockDataMeta {
&& (this.hideFlag == that.hideFlag)
&& (this.isUnbreakable() == that.isUnbreakable())
&& (this.hasDamage() ? that.hasDamage() && this.damage == that.damage : !that.hasDamage())
- && (this.version == that.version);
+ && (this.version == that.version)
+ // Paper start - Implement an API for CanPlaceOn and CanDestroy NBT values
+ && (this.hasPlaceableKeys() ? that.hasPlaceableKeys() && this.placeableKeys.equals(that.placeableKeys) : !that.hasPlaceableKeys())
+ && (this.hasDestroyableKeys() ? that.hasDestroyableKeys() && this.destroyableKeys.equals(that.destroyableKeys) : !that.hasDestroyableKeys());
+ // Paper end
}
/**
@@ -1212,6 +1324,10 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable, BlockDataMeta {
hash = 61 * hash + (this.hasDamage() ? this.damage : 0);
hash = 61 * hash + (this.hasAttributeModifiers() ? this.attributeModifiers.hashCode() : 0);
hash = 61 * hash + this.version;
+ // Paper start - Implement an API for CanPlaceOn and CanDestroy NBT values
+ hash = 61 * hash + (this.hasPlaceableKeys() ? this.placeableKeys.hashCode() : 0);
+ hash = 61 * hash + (this.hasDestroyableKeys() ? this.destroyableKeys.hashCode() : 0);
+ // Paper end
return hash;
}
@@ -1236,6 +1352,14 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable, BlockDataMeta {
clone.unbreakable = this.unbreakable;
clone.damage = this.damage;
clone.version = this.version;
+ // Paper start - Implement an API for CanPlaceOn and CanDestroy NBT values
+ if (this.placeableKeys != null) {
+ clone.placeableKeys = Sets.newHashSet(this.placeableKeys);
+ }
+ if (this.destroyableKeys != null) {
+ clone.destroyableKeys = Sets.newHashSet(this.destroyableKeys);
+ }
+ // Paper end
return clone;
} catch (CloneNotSupportedException e) {
throw new Error(e);
@@ -1293,6 +1417,23 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable, BlockDataMeta {
builder.put(DAMAGE.BUKKIT, damage);
}
+ // Paper start - Implement an API for CanPlaceOn and CanDestroy NBT values
+ if (this.hasPlaceableKeys()) {
+ List<String> cerealPlaceable = this.placeableKeys.stream()
+ .map(this::serializeNamespaced)
+ .collect(java.util.stream.Collectors.toList());
+
+ builder.put(CAN_PLACE_ON.BUKKIT, cerealPlaceable);
+ }
+
+ if (this.hasDestroyableKeys()) {
+ List<String> cerealDestroyable = this.destroyableKeys.stream()
+ .map(this::serializeNamespaced)
+ .collect(java.util.stream.Collectors.toList());
+
+ builder.put(CAN_DESTROY.BUKKIT, cerealDestroyable);
+ }
+ // Paper end
final Map<String, Tag> internalTags = new HashMap<String, Tag>(this.unhandledTags);
this.serializeInternal(internalTags);
if (!internalTags.isEmpty()) {
@@ -1459,6 +1600,8 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable, BlockDataMeta {
CraftMetaArmorStand.SHOW_ARMS.NBT,
CraftMetaArmorStand.SMALL.NBT,
CraftMetaArmorStand.MARKER.NBT,
+ CAN_DESTROY.NBT,
+ CAN_PLACE_ON.NBT,
// Paper end
CraftMetaCompass.LODESTONE_DIMENSION.NBT,
CraftMetaCompass.LODESTONE_POS.NBT,
@@ -1487,4 +1630,146 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable, BlockDataMeta {
}
// Paper end
+ // Paper start - Implement an API for CanPlaceOn and CanDestroy NBT values
+ @Override
+ @SuppressWarnings("deprecation")
+ public Set<Material> getCanDestroy() {
+ return !hasDestroyableKeys() ? Collections.emptySet() : legacyGetMatsFromKeys(this.destroyableKeys);
+ }
+
+ @Override
+ @SuppressWarnings("deprecation")
+ public void setCanDestroy(Set<Material> canDestroy) {
+ Validate.notNull(canDestroy, "Cannot replace with null set!");
+ legacyClearAndReplaceKeys(this.destroyableKeys, canDestroy);
+ }
+
+ @Override
+ @SuppressWarnings("deprecation")
+ public Set<Material> getCanPlaceOn() {
+ return !hasPlaceableKeys() ? Collections.emptySet() : legacyGetMatsFromKeys(this.placeableKeys);
+ }
+
+ @Override
+ @SuppressWarnings("deprecation")
+ public void setCanPlaceOn(Set<Material> canPlaceOn) {
+ Validate.notNull(canPlaceOn, "Cannot replace with null set!");
+ legacyClearAndReplaceKeys(this.placeableKeys, canPlaceOn);
+ }
+
+ @Override
+ public Set<Namespaced> getDestroyableKeys() {
+ return !hasDestroyableKeys() ? Collections.emptySet() : Sets.newHashSet(this.destroyableKeys);
+ }
+
+ @Override
+ public void setDestroyableKeys(Collection<Namespaced> canDestroy) {
+ Validate.notNull(canDestroy, "Cannot replace with null collection!");
+ Validate.isTrue(ofAcceptableType(canDestroy), "Can only use NamespacedKey or NamespacedTag objects!");
+ this.destroyableKeys.clear();
+ this.destroyableKeys.addAll(canDestroy);
+ }
+
+ @Override
+ public Set<Namespaced> getPlaceableKeys() {
+ return !hasPlaceableKeys() ? Collections.emptySet() : Sets.newHashSet(this.placeableKeys);
+ }
+
+ @Override
+ public void setPlaceableKeys(Collection<Namespaced> canPlaceOn) {
+ Validate.notNull(canPlaceOn, "Cannot replace with null collection!");
+ Validate.isTrue(ofAcceptableType(canPlaceOn), "Can only use NamespacedKey or NamespacedTag objects!");
+ this.placeableKeys.clear();
+ this.placeableKeys.addAll(canPlaceOn);
+ }
+
+ @Override
+ public boolean hasPlaceableKeys() {
+ return this.placeableKeys != null && !this.placeableKeys.isEmpty();
+ }
+
+ @Override
+ public boolean hasDestroyableKeys() {
+ return this.destroyableKeys != null && !this.destroyableKeys.isEmpty();
+ }
+
+ @Deprecated
+ private void legacyClearAndReplaceKeys(Collection<Namespaced> toUpdate, Collection<Material> beingSet) {
+ if (beingSet.stream().anyMatch(Material::isLegacy)) {
+ throw new IllegalArgumentException("Set must not contain any legacy materials!");
+ }
+
+ toUpdate.clear();
+ toUpdate.addAll(beingSet.stream().map(Material::getKey).collect(java.util.stream.Collectors.toSet()));
+ }
+
+ @Deprecated
+ private Set<Material> legacyGetMatsFromKeys(Collection<Namespaced> names) {
+ Set<Material> mats = Sets.newHashSet();
+ for (Namespaced key : names) {
+ if (!(key instanceof org.bukkit.NamespacedKey)) {
+ continue;
+ }
+
+ Material material = Material.matchMaterial(key.toString(), false);
+ if (material != null) {
+ mats.add(material);
+ }
+ }
+
+ return mats;
+ }
+
+ private @Nullable Namespaced deserializeNamespaced(String raw) {
+ boolean isTag = raw.length() > 0 && raw.codePointAt(0) == '#';
+ com.mojang.datafixers.util.Either<net.minecraft.commands.arguments.blocks.BlockStateParser.BlockResult, net.minecraft.commands.arguments.blocks.BlockStateParser.TagResult> result;
+ try {
+ result = net.minecraft.commands.arguments.blocks.BlockStateParser.parseForTesting(net.minecraft.core.Registry.BLOCK, raw, false);
+ } catch (com.mojang.brigadier.exceptions.CommandSyntaxException e) {
+ return null;
+ }
+
+ net.minecraft.resources.ResourceLocation key = null;
+ if (isTag && result.right().isPresent() && result.right().get().tag() instanceof net.minecraft.core.HolderSet.Named<net.minecraft.world.level.block.Block> namedSet) {
+ key = namedSet.key().location();
+ } else if (result.left().isPresent()) {
+ key = net.minecraft.core.Registry.BLOCK.getKey(result.left().get().blockState().getBlock());
+ }
+
+ if (key == null) {
+ return null;
+ }
+
+ // don't DC the player if something slips through somehow
+ Namespaced resource = null;
+ try {
+ if (isTag) {
+ resource = new NamespacedTag(key.getNamespace(), key.getPath());
+ } else {
+ resource = CraftNamespacedKey.fromMinecraft(key);
+ }
+ } catch (IllegalArgumentException ex) {
+ org.bukkit.Bukkit.getLogger().warning("Namespaced resource does not validate: " + key.toString());
+ ex.printStackTrace();
+ }
+
+ return resource;
+ }
+
+ private @Nonnull String serializeNamespaced(Namespaced resource) {
+ return resource.toString();
+ }
+
+ // not a fan of this
+ private boolean ofAcceptableType(Collection<Namespaced> namespacedResources) {
+
+ for (Namespaced resource : namespacedResources) {
+ if (!(resource instanceof org.bukkit.NamespacedKey || resource instanceof com.destroystokyo.paper.NamespacedTag)) {
+ return false;
+ }
+ }
+
+ return true;
+ }
+ // Paper end
}
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