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 7e3199567f25cc65046ba7374fe1a83fd2e5b191..4f5568707d725195ee19b65274454fec8bf99d64 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;
@@ -103,7 +104,7 @@ 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 46025e3ffdc21f14403186094f893dff6316ba5e..50faaaa48dffcaf53823caed1e3f7263cd5c441f 100644
--- a/src/test/java/org/bukkit/craftbukkit/inventory/ItemMetaTest.java
+++ b/src/test/java/org/bukkit/craftbukkit/inventory/ItemMetaTest.java
@@ -365,6 +365,7 @@ public class ItemMetaTest {
                     final CraftMetaArmorStand meta = (CraftMetaArmorStand) cleanStack.getItemMeta();
                     meta.entityTag = new CompoundTag();
                     meta.entityTag.putBoolean("Small", true);
+                    meta.setInvisible(true); // Paper
                     cleanStack.setItemMeta(meta);
                     return cleanStack;
                 }