Paper/patches/server/0169-Add-ArmorStand-Item-Meta.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Zach Brown <zach.brown@destroystokyo.com>
Date: Sat, 27 Jan 2018 17:04:14 -0500
Subject: [PATCH] Add ArmorStand Item Meta

This is adds basic item meta for armor stands. It does not add all
possible metadata however.

There are armor, hand, and equipment types, as well as position data
that can also be added here. This initial addition should serve a
starting point for future additions in this area.

Fixes GH-559

diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemMetas.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemMetas.java
index eef3517833ff5c0cf41b89973ebc972b8ed31e0f..c9fbc01be0b0e7fd1cafb091d06496f4ba1e7c2c 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemMetas.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemMetas.java
@@ -1,5 +1,6 @@
 package org.bukkit.craftbukkit.inventory;
 
+import com.destroystokyo.paper.inventory.meta.ArmorStandMeta;
 import java.util.function.BiFunction;
 import java.util.function.Function;
 import net.minecraft.world.item.BannerItem;
@@ -102,7 +103,7 @@ public final class CraftItemMetas {
             item -> new CraftMetaSpawnEgg(item.getComponentsPatch()),
             (type, meta) -> meta instanceof CraftMetaSpawnEgg spawnEgg ? spawnEgg : new CraftMetaSpawnEgg(meta));
 
-    private static final ItemMetaData<ItemMeta> ARMOR_STAND_META_DATA = new ItemMetaData<>(ItemMeta.class,
+    private static final ItemMetaData<ArmorStandMeta> ARMOR_STAND_META_DATA = new ItemMetaData<>(ArmorStandMeta.class, // paper
             item -> new CraftMetaArmorStand(item.getComponentsPatch()),
             (type, meta) -> meta instanceof CraftMetaArmorStand armorStand ? armorStand : new CraftMetaArmorStand(meta));
 
diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaArmorStand.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaArmorStand.java
index c4f12f96e39cb6189799a796b4cb2cb4f0b92392..ecce5d0da946ca279c5608068442cc53437dd2a5 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaArmorStand.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaArmorStand.java
@@ -11,9 +11,17 @@ import org.bukkit.Material;
 import org.bukkit.configuration.serialization.DelegateDeserialization;
 
 @DelegateDeserialization(SerializableMeta.class)
-public class CraftMetaArmorStand extends CraftMetaItem {
+public class CraftMetaArmorStand extends CraftMetaItem implements com.destroystokyo.paper.inventory.meta.ArmorStandMeta { // Paper
 
     static final ItemMetaKeyType<CustomData> ENTITY_TAG = new ItemMetaKeyType<>(DataComponents.ENTITY_DATA, "entity-tag");
+    // Paper start
+    static final ItemMetaKey ENTITY_ID = new ItemMetaKey("id", "entity-id");
+    static final ItemMetaKey INVISIBLE = new ItemMetaKey("Invisible", "invisible");
+    static final ItemMetaKey NO_BASE_PLATE = new ItemMetaKey("NoBasePlate", "no-base-plate");
+    static final ItemMetaKey SHOW_ARMS = new ItemMetaKey("ShowArms", "show-arms");
+    static final ItemMetaKey SMALL = new ItemMetaKey("Small", "small");
+    static final ItemMetaKey MARKER = new ItemMetaKey("Marker", "marker");
+    // Paper end
     CompoundTag entityTag;
 
     CraftMetaArmorStand(CraftMetaItem meta) {
@@ -37,6 +45,42 @@ public class CraftMetaArmorStand extends CraftMetaItem {
 
     CraftMetaArmorStand(Map<String, Object> map) {
         super(map);
+        // Paper start
+        String entityTag = SerializableMeta.getString(map, ENTITY_TAG.BUKKIT, true);
+        if (entityTag != null) {
+            java.io.ByteArrayInputStream buf = new java.io.ByteArrayInputStream(java.util.Base64.getDecoder().decode(entityTag));
+            try {
+                this.entityTag = net.minecraft.nbt.NbtIo.readCompressed(buf, net.minecraft.nbt.NbtAccounter.unlimitedHeap());
+            } catch (java.io.IOException ex) {
+                java.util.logging.Logger.getLogger(CraftMetaItem.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
+            }
+            return;
+        }
+        SerializableMeta.getObjectOptionally(Boolean.class, map, INVISIBLE.BUKKIT, true).ifPresent((value) -> {
+            populateTagIfNull();
+            this.entityTag.putBoolean(INVISIBLE.NBT, value);
+        });
+        SerializableMeta.getObjectOptionally(Boolean.class, map, NO_BASE_PLATE.BUKKIT, true).ifPresent((value) -> {
+            populateTagIfNull();
+            this.entityTag.putBoolean(NO_BASE_PLATE.NBT, value);
+        });
+        SerializableMeta.getObjectOptionally(Boolean.class, map, SHOW_ARMS.BUKKIT, true).ifPresent((value) -> {
+            populateTagIfNull();
+            this.entityTag.putBoolean(SHOW_ARMS.NBT, value);
+        });
+        SerializableMeta.getObjectOptionally(Boolean.class, map, SMALL.BUKKIT, true).ifPresent((value) -> {
+            populateTagIfNull();
+            this.entityTag.putBoolean(SMALL.NBT, value);
+        });
+        SerializableMeta.getObjectOptionally(Boolean.class, map, MARKER.BUKKIT, true).ifPresent((value) -> {
+            populateTagIfNull();
+            this.entityTag.putBoolean(MARKER.NBT, value);
+        });
+        SerializableMeta.getObjectOptionally(String.class, map, ENTITY_ID, true).ifPresent((value) -> {
+            populateTagIfNull();
+            this.entityTag.putString(ENTITY_ID.NBT, value);
+        });
+        // Paper end
     }
 
     @Override
@@ -45,12 +89,13 @@ public class CraftMetaArmorStand extends CraftMetaItem {
 
         if (tag.contains(CraftMetaArmorStand.ENTITY_TAG.NBT)) {
             this.entityTag = tag.getCompound(CraftMetaArmorStand.ENTITY_TAG.NBT);
+            if (!this.entityTag.contains(ENTITY_ID.NBT)) entityTag.putString(ENTITY_ID.NBT, "minecraft:armor_stand"); // Paper - fixup legacy armorstand metas that did not include this.
         }
     }
 
     @Override
     void serializeInternal(Map<String, Tag> internalTags) {
-        if (this.entityTag != null && !this.entityTag.isEmpty()) {
+        if (false && this.entityTag != null && !this.entityTag.isEmpty()) { // Paper - now correctly serialised as entity tag
             internalTags.put(CraftMetaArmorStand.ENTITY_TAG.NBT, this.entityTag);
         }
     }
@@ -75,7 +120,7 @@ public class CraftMetaArmorStand extends CraftMetaItem {
     }
 
     boolean isArmorStandEmpty() {
-        return !(this.entityTag != null);
+        return entityTag == null || entityTag.isEmpty(); // Paper - consider armor stand empty if tag is empty.
     }
 
     @Override
@@ -86,7 +131,9 @@ public class CraftMetaArmorStand extends CraftMetaItem {
         if (meta instanceof CraftMetaArmorStand) {
             CraftMetaArmorStand that = (CraftMetaArmorStand) meta;
 
-            return this.entityTag != null ? that.entityTag != null && this.entityTag.equals(that.entityTag) : this.entityTag == null;
+            // Paper start
+            return java.util.Objects.equals(this.entityTag, that.entityTag);
+            // Paper end
         }
         return true;
     }
@@ -112,6 +159,21 @@ public class CraftMetaArmorStand extends CraftMetaItem {
     Builder<String, Object> serialize(Builder<String, Object> builder) {
         super.serialize(builder);
 
+        // Paper start
+        if (entityTag == null) {
+            return builder;
+        } else if (true) {
+            java.io.ByteArrayOutputStream buf = new java.io.ByteArrayOutputStream();
+            try {
+                net.minecraft.nbt.NbtIo.writeCompressed(entityTag, buf);
+            } catch (java.io.IOException ex) {
+                java.util.logging.Logger.getLogger(CraftMetaItem.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
+            }
+            builder.put(ENTITY_TAG.BUKKIT, java.util.Base64.getEncoder().encodeToString(buf.toByteArray()));
+            return builder;
+        }
+        // Paper end
+
         return builder;
     }
 
@@ -125,4 +187,68 @@ public class CraftMetaArmorStand extends CraftMetaItem {
 
         return clone;
     }
+
+    // Paper start
+    private void populateTagIfNull() {
+        if (this.entityTag == null) {
+            this.entityTag = new CompoundTag();
+            this.entityTag.putString(ENTITY_ID.NBT, "minecraft:armor_stand");
+        }
+    }
+
+    @Override
+    public boolean isInvisible() {
+        return entityTag != null && entityTag.contains(INVISIBLE.NBT) && entityTag.getBoolean(INVISIBLE.NBT);
+    }
+
+    @Override
+    public boolean hasNoBasePlate() {
+        return entityTag != null && entityTag.contains(NO_BASE_PLATE.NBT) && entityTag.getBoolean(NO_BASE_PLATE.NBT);
+    }
+
+    @Override
+    public boolean shouldShowArms() {
+        return entityTag != null && entityTag.contains(SHOW_ARMS.NBT) && entityTag.getBoolean(SHOW_ARMS.NBT);
+    }
+
+    @Override
+    public boolean isSmall() {
+        return entityTag != null && entityTag.contains(SMALL.NBT) && entityTag.getBoolean(SMALL.NBT);
+    }
+
+    @Override
+    public boolean isMarker() {
+        return entityTag != null && entityTag.contains(MARKER.NBT) && entityTag.getBoolean(MARKER.NBT);
+    }
+
+    @Override
+    public void setInvisible(boolean invisible) {
+        populateTagIfNull();
+        entityTag.putBoolean(INVISIBLE.NBT, invisible);
+    }
+
+    @Override
+    public void setNoBasePlate(boolean noBasePlate) {
+        populateTagIfNull();
+        entityTag.putBoolean(NO_BASE_PLATE.NBT, noBasePlate);
+    }
+
+    @Override
+    public void setShowArms(boolean showArms) {
+        populateTagIfNull();
+        entityTag.putBoolean(SHOW_ARMS.NBT, showArms);
+    }
+
+    @Override
+    public void setSmall(boolean small) {
+        populateTagIfNull();
+        entityTag.putBoolean(SMALL.NBT, small);
+    }
+
+    @Override
+    public void setMarker(boolean marker) {
+        populateTagIfNull();
+        entityTag.putBoolean(MARKER.NBT, marker);
+    }
+    // Paper end
 }
diff --git a/src/test/java/org/bukkit/craftbukkit/inventory/ItemMetaTest.java b/src/test/java/org/bukkit/craftbukkit/inventory/ItemMetaTest.java
index b46032190dbb0d47ee3c1a11959f6278ddf5eb5a..0715f43f3f8235d28a12b9d49d78c765a946c53f 100644
--- a/src/test/java/org/bukkit/craftbukkit/inventory/ItemMetaTest.java
+++ b/src/test/java/org/bukkit/craftbukkit/inventory/ItemMetaTest.java
@@ -364,6 +364,7 @@ public class ItemMetaTest extends AbstractTestingBase {
                     final CraftMetaArmorStand meta = (CraftMetaArmorStand) cleanStack.getItemMeta();
                     meta.entityTag = new CompoundTag();
                     meta.entityTag.putBoolean("Small", true);
+                    meta.setInvisible(true); // Paper
                     cleanStack.setItemMeta(meta);
                     return cleanStack;
                 }