Paper/patches/server/0946-Fix-ItemFlags.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Sat, 27 Apr 2024 12:16:38 -0700
Subject: [PATCH] Fix ItemFlags

Re-adds missing functionality for HIDE_DESTROYS and
HIDE_PLACED_ON. Also adds new flag in HIDE_STORED_ENCHANTS
which was split from HIDE_ADDITIONAL_TOOLTIP.

== AT ==
public net.minecraft.world.item.AdventureModePredicate predicates

diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaEnchantedBook.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaEnchantedBook.java
index 73fe41322e0349ad1d46a760f621b6c91112e90e..19af55ec2bf62b70bd3be44f499b32f5efe71ab1 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaEnchantedBook.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaEnchantedBook.java
@@ -38,7 +38,7 @@ class CraftMetaEnchantedBook extends CraftMetaItem implements EnchantmentStorage
         getOrEmpty(tag, CraftMetaEnchantedBook.STORED_ENCHANTMENTS).ifPresent((itemEnchantments) -> {
             this.enchantments = buildEnchantments(itemEnchantments);
             if (!itemEnchantments.showInTooltip) {
-                this.addItemFlags(ItemFlag.HIDE_ADDITIONAL_TOOLTIP);
+                this.addItemFlags(ItemFlag.HIDE_STORED_ENCHANTS); // Paper - new ItemFlag
             }
         });
     }
@@ -53,7 +53,7 @@ class CraftMetaEnchantedBook extends CraftMetaItem implements EnchantmentStorage
     void applyToItem(CraftMetaItem.Applicator itemTag) {
         super.applyToItem(itemTag);
 
-        this.applyEnchantments(this.enchantments, itemTag, CraftMetaEnchantedBook.STORED_ENCHANTMENTS, ItemFlag.HIDE_ADDITIONAL_TOOLTIP);
+        this.applyEnchantments(this.enchantments, itemTag, CraftMetaEnchantedBook.STORED_ENCHANTMENTS, ItemFlag.HIDE_STORED_ENCHANTS);
     }
 
     @Override
diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java
index 8cfc5a381aa39b8ec396efeed6d456cbf3e792f9..6641c72ddb9fd55f1c25f33a5272fd3c85a6cf5c 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java
@@ -275,6 +275,12 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable, BlockDataMeta {
     static final ItemMetaKeyType<Unit> HIDE_ADDITIONAL_TOOLTIP = new ItemMetaKeyType(DataComponents.HIDE_ADDITIONAL_TOOLTIP);
     @Specific(Specific.To.NBT)
     static final ItemMetaKeyType<CustomData> CUSTOM_DATA = new ItemMetaKeyType<>(DataComponents.CUSTOM_DATA);
+    // Paper start - fix ItemFlags
+    static final ItemMetaKeyType<net.minecraft.world.item.AdventureModePredicate> CAN_PLACE_ON = new ItemMetaKeyType<>(DataComponents.CAN_PLACE_ON);
+    static final ItemMetaKeyType<net.minecraft.world.item.AdventureModePredicate> CAN_BREAK = new ItemMetaKeyType<>(DataComponents.CAN_BREAK);
+    private List<net.minecraft.advancements.critereon.BlockPredicate> canPlaceOnPredicates;
+    private List<net.minecraft.advancements.critereon.BlockPredicate> canBreakPredicates;
+    // Paper end - fix ItemFlags
 
     // We store the raw original JSON representation of all text data. See SPIGOT-5063, SPIGOT-5656, SPIGOT-5304
     private Component displayName;
@@ -377,6 +383,10 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable, BlockDataMeta {
         this.customTag = meta.customTag;
 
         this.version = meta.version;
+        // Paper start
+        this.canPlaceOnPredicates = meta.canPlaceOnPredicates;
+        this.canBreakPredicates = meta.canBreakPredicates;
+        // Paper end
     }
 
     CraftMetaItem(DataComponentPatch tag) {
@@ -496,6 +506,20 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable, BlockDataMeta {
                 this.customTag = null;
             }
         });
+        // Paper start - fix ItemFlags
+        CraftMetaItem.getOrEmpty(tag, CraftMetaItem.CAN_PLACE_ON).ifPresent(data -> {
+            this.canPlaceOnPredicates = List.copyOf(data.predicates);
+            if (!data.showInTooltip()) {
+                this.addItemFlags(ItemFlag.HIDE_PLACED_ON);
+            }
+        });
+        CraftMetaItem.getOrEmpty(tag, CraftMetaItem.CAN_BREAK).ifPresent(data -> {
+            this.canBreakPredicates = List.copyOf(data.predicates);
+            if (!data.showInTooltip()) {
+                this.addItemFlags(ItemFlag.HIDE_DESTROYS);
+            }
+        });
+        // Paper end - fix ItemFlags
 
         Set<Map.Entry<DataComponentType<?>, Optional<?>>> keys = tag.entrySet();
         for (Map.Entry<DataComponentType<?>, Optional<?>> key : keys) {
@@ -735,7 +759,15 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable, BlockDataMeta {
             try {
                 CompoundTag unhandledTag = NbtIo.readCompressed(buf, NbtAccounter.unlimitedHeap());
                 DataComponentPatch unhandledPatch = DataComponentPatch.CODEC.parse(MinecraftServer.getDefaultRegistryAccess().createSerializationContext(NbtOps.INSTANCE), unhandledTag).result().get();
-                this.unhandledTags.copy(unhandledPatch);
+                // Paper start
+                CraftMetaItem.getOrEmpty(unhandledPatch, CraftMetaItem.CAN_PLACE_ON).ifPresent(data -> {
+                    this.canPlaceOnPredicates = List.copyOf(data.predicates);
+                });
+                CraftMetaItem.getOrEmpty(unhandledPatch, CraftMetaItem.CAN_BREAK).ifPresent(data -> {
+                    this.canBreakPredicates = List.copyOf(data.predicates);
+                });
+                this.unhandledTags.copy(unhandledPatch.forget(type -> type == CraftMetaItem.CAN_PLACE_ON.TYPE || type == CraftMetaItem.CAN_BREAK.TYPE));
+                // Paper end
 
                 for (Entry<DataComponentType<?>, Optional<?>> entry : unhandledPatch.entrySet()) {
                     // Move removed unhandled tags to dedicated removedTags
@@ -1006,6 +1038,15 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable, BlockDataMeta {
             itemTag.put(CraftMetaItem.MAX_DAMAGE, this.maxDamage);
         }
 
+        // Paper start
+        if (this.canPlaceOnPredicates != null && !this.canPlaceOnPredicates.isEmpty()) {
+            itemTag.put(CraftMetaItem.CAN_PLACE_ON, new net.minecraft.world.item.AdventureModePredicate(this.canPlaceOnPredicates, !this.hasItemFlag(ItemFlag.HIDE_PLACED_ON)));
+        }
+        if (this.canBreakPredicates != null && !this.canBreakPredicates.isEmpty()) {
+            itemTag.put(CraftMetaItem.CAN_BREAK, new net.minecraft.world.item.AdventureModePredicate(this.canBreakPredicates, !this.hasItemFlag(ItemFlag.HIDE_DESTROYS)));
+        }
+        // Paper end
+
         for (Map.Entry<DataComponentType<?>, Optional<?>> e : this.unhandledTags.build().entrySet()) {
             e.getValue().ifPresent((value) -> {
                 itemTag.builder.set((DataComponentType) e.getKey(), value);
@@ -1096,7 +1137,7 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable, BlockDataMeta {
 
     @Overridden
     boolean isEmpty() {
-        return !(this.hasDisplayName() || this.hasItemName() || this.hasLocalizedName() || this.hasEnchants() || (this.lore != null) || this.hasCustomModelData() || this.hasEnchantable() || this.hasBlockData() || this.hasRepairCost() || !this.unhandledTags.build().isEmpty() || !this.removedTags.isEmpty() || !this.persistentDataContainer.isEmpty() || this.hideFlag != 0 || this.isHideTooltip() || this.hasTooltipStyle() || this.hasItemModel() || this.isUnbreakable() || this.hasEnchantmentGlintOverride() || this.isGlider() || this.hasDamageResistant() || this.hasMaxStackSize() || this.hasRarity() || this.hasUseRemainder() || this.hasUseCooldown() || this.hasFood() || this.hasTool() || this.hasJukeboxPlayable() || this.hasEquippable() || this.hasDamage() || this.hasMaxDamage() || this.hasAttributeModifiers() || this.customTag != null);
+        return !(this.hasDisplayName() || this.hasItemName() || this.hasLocalizedName() || this.hasEnchants() || (this.lore != null) || this.hasCustomModelData() || this.hasEnchantable() || this.hasBlockData() || this.hasRepairCost() || !this.unhandledTags.build().isEmpty() || !this.removedTags.isEmpty() || !this.persistentDataContainer.isEmpty() || this.hideFlag != 0 || this.isHideTooltip() || this.hasTooltipStyle() || this.hasItemModel() || this.isUnbreakable() || this.hasEnchantmentGlintOverride() || this.isGlider() || this.hasDamageResistant() || this.hasMaxStackSize() || this.hasRarity() || this.hasUseRemainder() || this.hasUseCooldown() || this.hasFood() || this.hasTool() || this.hasJukeboxPlayable() || this.hasEquippable() || this.hasDamage() || this.hasMaxDamage() || this.hasAttributeModifiers() || this.customTag != null || this.canPlaceOnPredicates != null || this.canBreakPredicates != null); // Paper
     }
 
     // Paper start
@@ -1889,6 +1930,8 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable, BlockDataMeta {
                 && (this.hasJukeboxPlayable() ? that.hasJukeboxPlayable() && this.jukebox.equals(that.jukebox) : !that.hasJukeboxPlayable())
                 && (this.hasDamage() ? that.hasDamage() && this.damage == that.damage : !that.hasDamage())
                 && (this.hasMaxDamage() ? that.hasMaxDamage() && this.maxDamage.equals(that.maxDamage) : !that.hasMaxDamage())
+                && (this.canPlaceOnPredicates != null ? that.canPlaceOnPredicates != null && this.canPlaceOnPredicates.equals(that.canPlaceOnPredicates) : that.canPlaceOnPredicates == null) // Paper
+                && (this.canBreakPredicates != null ? that.canBreakPredicates != null && this.canBreakPredicates.equals(that.canBreakPredicates) : that.canBreakPredicates == null) // Paper
                 && (this.version == that.version);
     }
 
@@ -1941,6 +1984,8 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable, BlockDataMeta {
         hash = 61 * hash + (this.hasDamage() ? this.damage : 0);
         hash = 61 * hash + (this.hasMaxDamage() ? 1231 : 1237);
         hash = 61 * hash + (this.hasAttributeModifiers() ? this.attributeModifiers.hashCode() : 0);
+        hash = 61 * hash + (this.canPlaceOnPredicates != null ? this.canPlaceOnPredicates.hashCode() : 0); // Paper
+        hash = 61 * hash + (this.canBreakPredicates != null ? this.canBreakPredicates.hashCode() : 0); // Paper
         hash = 61 * hash + this.version;
         return hash;
     }
@@ -1998,6 +2043,14 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable, BlockDataMeta {
             clone.damage = this.damage;
             clone.maxDamage = this.maxDamage;
             clone.version = this.version;
+            // Paper start
+            if (this.canPlaceOnPredicates != null) {
+                clone.canPlaceOnPredicates = List.copyOf(this.canPlaceOnPredicates);
+            }
+            if (this.canBreakPredicates != null) {
+                clone.canBreakPredicates = List.copyOf(this.canBreakPredicates);
+            }
+            // Paper end
             return clone;
         } catch (CloneNotSupportedException e) {
             throw new Error(e);
@@ -2142,6 +2195,16 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable, BlockDataMeta {
             }
         }
 
+        // Paper start
+        final boolean canBreakAddToUnhandled = this.canBreakPredicates != null && !this.canBreakPredicates.isEmpty();
+        if (canBreakAddToUnhandled) {
+            this.unhandledTags.set(DataComponents.CAN_BREAK, new net.minecraft.world.item.AdventureModePredicate(this.canBreakPredicates, !this.hasItemFlag(ItemFlag.HIDE_DESTROYS)));
+        }
+        final boolean canPlaceOnAddToUnhandled = this.canPlaceOnPredicates != null && !this.canPlaceOnPredicates.isEmpty();
+        if (canPlaceOnAddToUnhandled) {
+            this.unhandledTags.set(DataComponents.CAN_PLACE_ON, new net.minecraft.world.item.AdventureModePredicate(this.canPlaceOnPredicates, !this.hasItemFlag(ItemFlag.HIDE_PLACED_ON)));
+        }
+        // Paper end
         if (!this.unhandledTags.isEmpty()) {
             net.minecraft.nbt.Tag unhandled = DataComponentPatch.CODEC.encodeStart(MinecraftServer.getDefaultRegistryAccess().createSerializationContext(NbtOps.INSTANCE), this.unhandledTags.build()).getOrThrow(IllegalStateException::new);
             try {
@@ -2152,6 +2215,14 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable, BlockDataMeta {
                 Logger.getLogger(CraftMetaItem.class.getName()).log(Level.SEVERE, null, ex);
             }
         }
+        // Paper start
+        if (canBreakAddToUnhandled) {
+            this.unhandledTags.clear(DataComponents.CAN_BREAK);
+        }
+        if (canPlaceOnAddToUnhandled) {
+            this.unhandledTags.clear(DataComponents.CAN_PLACE_ON);
+        }
+        // Paper end
 
         if (!this.removedTags.isEmpty()) {
             RegistryAccess registryAccess = CraftRegistry.getMinecraftRegistry();
@@ -2312,6 +2383,8 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable, BlockDataMeta {
                         CraftMetaItem.MAX_DAMAGE.TYPE,
                         CraftMetaItem.CUSTOM_DATA.TYPE,
                         CraftMetaItem.ATTRIBUTES.TYPE,
+                        CraftMetaItem.CAN_PLACE_ON.TYPE, // Paper
+                        CraftMetaItem.CAN_BREAK.TYPE, // Paper
                         CraftMetaArmor.TRIM.TYPE,
                         CraftMetaArmorStand.ENTITY_TAG.TYPE,
                         CraftMetaBanner.PATTERNS.TYPE,