From 437467739ecf5c3c4184bd791f3e8dedd9d700e1 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/CraftItemFactory.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemFactory.java
index 7099eeda4e..cb9f4af3f7 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemFactory.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemFactory.java
@@ -201,6 +201,8 @@ public final class CraftItemFactory implements ItemFactory {
             return meta instanceof CraftMetaSpawnEgg ? meta : new CraftMetaSpawnEgg(meta);
         case KNOWLEDGE_BOOK:
             return meta instanceof CraftMetaKnowledgeBook ? meta : new CraftMetaKnowledgeBook(meta);
+        case ARMOR_STAND:
+            return meta instanceof CraftMetaArmorStand ? meta : new CraftMetaArmorStand(meta); // Paper
         case FURNACE:
         case CHEST:
         case TRAPPED_CHEST:
diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemStack.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemStack.java
index f2f4c8d3c3..6e018396e6 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemStack.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemStack.java
@@ -402,6 +402,8 @@ public final class CraftItemStack extends ItemStack {
                 return new CraftMetaSpawnEgg(item.getTag());
             case KNOWLEDGE_BOOK:
                 return new CraftMetaKnowledgeBook(item.getTag());
+            case ARMOR_STAND:
+                return new CraftMetaArmorStand(item.getTag()); // Paper
             case FURNACE:
             case CHEST:
             case TRAPPED_CHEST:
diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaArmorStand.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaArmorStand.java
new file mode 100644
index 0000000000..c00b89c8d4
--- /dev/null
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaArmorStand.java
@@ -0,0 +1,311 @@
+package org.bukkit.craftbukkit.inventory;
+
+import com.destroystokyo.paper.inventory.meta.ArmorStandMeta;
+import com.google.common.collect.ImmutableMap;
+import com.mojang.datafixers.Dynamic;
+
+import net.minecraft.server.DataConverterTypes;
+import net.minecraft.server.DynamicOpsNBT;
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.NBTBase;
+import net.minecraft.server.NBTTagCompound;
+
+import org.bukkit.Bukkit;
+import org.bukkit.Material;
+import org.bukkit.configuration.serialization.DelegateDeserialization;
+import org.bukkit.craftbukkit.util.CraftMagicNumbers;
+
+import java.util.Map;
+
+// Paper - Created entire class
+@DelegateDeserialization(CraftMetaItem.SerializableMeta.class)
+public class CraftMetaArmorStand extends CraftMetaItem implements ArmorStandMeta {
+
+    static final ItemMetaKey ENTITY_TAG = new ItemMetaKey("EntityTag", "entity-tag");
+    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");
+
+    private NBTTagCompound entityTag;
+
+    private boolean invisible;
+    private boolean noBasePlate;
+    private boolean showArms;
+    private boolean small;
+    private boolean marker;
+
+    CraftMetaArmorStand(CraftMetaItem meta) {
+        super(meta);
+
+        if (!(meta instanceof CraftMetaArmorStand)) {
+            return;
+        }
+
+        CraftMetaArmorStand standMeta = (CraftMetaArmorStand) meta;
+        this.invisible = standMeta.invisible;
+        this.noBasePlate = standMeta.noBasePlate;
+        this.showArms = standMeta.showArms;
+        this.small = standMeta.small;
+        this.marker = standMeta.marker;
+    }
+
+    CraftMetaArmorStand(NBTTagCompound tag) {
+        super(tag);
+
+        if (tag.hasKey(ENTITY_TAG.NBT)) {
+            entityTag = tag.getCompound(ENTITY_TAG.NBT);
+
+            if (entityTag.hasKey(INVISIBLE.NBT)) {
+                invisible = entityTag.getBoolean(INVISIBLE.NBT);
+            }
+
+            if (entityTag.hasKey(NO_BASE_PLATE.NBT)) {
+                noBasePlate = entityTag.getBoolean(NO_BASE_PLATE.NBT);
+            }
+
+            if (entityTag.hasKey(SHOW_ARMS.NBT)) {
+                showArms = entityTag.getBoolean(SHOW_ARMS.NBT);
+            }
+
+            if (entityTag.hasKey(SMALL.NBT)) {
+                small = entityTag.getBoolean(SMALL.NBT);
+            }
+
+            if (entityTag.hasKey(MARKER.NBT)) {
+                marker = entityTag.getBoolean(MARKER.NBT);
+            }
+        }
+    }
+
+    CraftMetaArmorStand(Map<String, Object> map) {
+        super(map);
+
+        boolean invis = SerializableMeta.getBoolean(map, INVISIBLE.BUKKIT);
+        boolean noBase = SerializableMeta.getBoolean(map, NO_BASE_PLATE.BUKKIT);
+        boolean showArms = SerializableMeta.getBoolean(map, SHOW_ARMS.BUKKIT);
+        boolean small = SerializableMeta.getBoolean(map, SMALL.BUKKIT);
+        boolean marker = SerializableMeta.getBoolean(map, MARKER.BUKKIT);
+
+        this.invisible = invis;
+        this.noBasePlate = noBase;
+        this.showArms = showArms;
+        this.small = small;
+        this.marker = marker;
+    }
+
+    @Override
+    void applyToItem(NBTTagCompound tag) {
+        super.applyToItem(tag);
+
+        if (!isArmorStandEmpty() && entityTag == null) {
+            entityTag = new NBTTagCompound();
+        }
+
+        if (isInvisible()) {
+            entityTag.setBoolean(INVISIBLE.NBT, invisible);
+        }
+
+        if (hasNoBasePlate()) {
+            entityTag.setBoolean(NO_BASE_PLATE.NBT, noBasePlate);
+        }
+
+        if (shouldShowArms()) {
+            entityTag.setBoolean(SHOW_ARMS.NBT, showArms);
+        }
+
+        if (isSmall()) {
+            entityTag.setBoolean(SMALL.NBT, small);
+        }
+
+        if (isMarker()) {
+            entityTag.setBoolean(MARKER.NBT, marker);
+        }
+
+        if (entityTag != null) {
+            tag.set(ENTITY_TAG.NBT, entityTag);
+        }
+    }
+
+    @Override
+    boolean applicableTo(Material type) {
+        switch (type) {
+            case ARMOR_STAND:
+                return true;
+            default:
+                return false;
+        }
+    }
+
+    @Override
+    boolean isEmpty() {
+        return super.isEmpty() && isArmorStandEmpty();
+    }
+
+    boolean isArmorStandEmpty() {
+        return !(isInvisible() || hasNoBasePlate() || shouldShowArms() || isSmall() || isMarker() || entityTag != null);
+    }
+
+    @Override
+    ImmutableMap.Builder<String, Object> serialize(ImmutableMap.Builder<String, Object> builder) {
+        super.serialize(builder);
+
+        if (isInvisible()) {
+            builder.put(INVISIBLE.BUKKIT, invisible);
+        }
+
+        if (hasNoBasePlate()) {
+            builder.put(NO_BASE_PLATE.BUKKIT, noBasePlate);
+        }
+
+        if (shouldShowArms()) {
+            builder.put(SHOW_ARMS.BUKKIT, showArms);
+        }
+
+        if (isSmall()) {
+            builder.put(SMALL.BUKKIT, small);
+        }
+
+        if (isMarker()) {
+            builder.put(MARKER.BUKKIT, marker);
+        }
+
+        return builder;
+    }
+
+    @Override
+    void deserializeInternal(NBTTagCompound tag, Object context) {
+        super.deserializeInternal(tag, context);
+
+        if (tag.hasKey(ENTITY_TAG.NBT)) {
+            entityTag = tag.getCompound(ENTITY_TAG.NBT);
+            MinecraftServer.getServer().dataConverterManager.update(DataConverterTypes.ENTITY, new Dynamic(DynamicOpsNBT.a, entityTag), -1, Bukkit.getUnsafe().getDataVersion());
+
+            if (entityTag.hasKey(INVISIBLE.NBT)) {
+                invisible = entityTag.getBoolean(INVISIBLE.NBT);
+            }
+
+            if (entityTag.hasKey(NO_BASE_PLATE.NBT)) {
+                noBasePlate = entityTag.getBoolean(NO_BASE_PLATE.NBT);
+            }
+
+            if (entityTag.hasKey(SHOW_ARMS.NBT)) {
+                showArms = entityTag.getBoolean(SHOW_ARMS.NBT);
+            }
+
+            if (entityTag.hasKey(SMALL.NBT)) {
+                small = entityTag.getBoolean(SMALL.NBT);
+            }
+
+            if (entityTag.hasKey(MARKER.NBT)) {
+                marker = entityTag.getBoolean(MARKER.NBT);
+            }
+        }
+    }
+
+    @Override
+    boolean equalsCommon(CraftMetaItem meta) {
+        if (!super.equalsCommon(meta)) {
+            return false;
+        }
+        if (meta instanceof CraftMetaArmorStand) {
+            CraftMetaArmorStand that = (CraftMetaArmorStand) meta;
+
+            return invisible == that.invisible &&
+                    noBasePlate == that.noBasePlate &&
+                    showArms == that.showArms &&
+                    small == that.small &&
+                    marker == that.marker;
+        }
+        return true;
+    }
+
+    @Override
+    boolean notUncommon(CraftMetaItem meta) {
+        return super.notUncommon(meta) && (meta instanceof CraftMetaArmorStand || isArmorStandEmpty());
+    }
+
+    @Override
+    void serializeInternal(Map<String, NBTBase> internalTags) {
+        if (entityTag != null) {
+            internalTags.put(ENTITY_TAG.NBT, entityTag);
+        }
+    }
+
+    @Override
+    public boolean isInvisible() {
+        return invisible;
+    }
+
+    @Override
+    public boolean hasNoBasePlate() {
+        return noBasePlate;
+    }
+
+    @Override
+    public boolean shouldShowArms() {
+        return showArms;
+    }
+
+    @Override
+    public boolean isSmall() {
+        return small;
+    }
+
+    @Override
+    public boolean isMarker() {
+        return marker;
+    }
+
+    @Override
+    public void setInvisible(boolean invisible) {
+        this.invisible = invisible;
+    }
+
+    @Override
+    public void setNoBasePlate(boolean noBasePlate) {
+        this.noBasePlate = noBasePlate;
+    }
+
+    @Override
+    public void setShowArms(boolean showArms) {
+        this.showArms = showArms;
+    }
+
+    @Override
+    public void setSmall(boolean small) {
+        this.small = small;
+    }
+
+    @Override
+    public void setMarker(boolean marker) {
+        this.marker = marker;
+    }
+
+    @Override
+    int applyHash() {
+        final int original;
+        int hash = original = super.applyHash();
+
+        hash += entityTag != null ? 73 * hash + entityTag.hashCode() : 0;
+        hash += isInvisible() ? 61 * hash + 1231 : 0;
+        hash += hasNoBasePlate() ? 61 * hash + 1231 : 0;
+        hash += shouldShowArms() ? 61 * hash + 1231 : 0;
+        hash += isSmall() ? 61 * hash + 1231 : 0;
+        hash += isMarker() ? 61 * hash + 1231 : 0;
+
+        return original != hash ? CraftMetaArmorStand.class.hashCode() ^ hash : hash;
+    }
+
+    @Override
+    public CraftMetaArmorStand clone() {
+        CraftMetaArmorStand clone = (CraftMetaArmorStand) super.clone();
+
+        if (entityTag != null) {
+            clone.entityTag = entityTag.clone();
+        }
+
+        return clone;
+    }
+}
diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java
index bf7b226a4f..a8b267487f 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java
@@ -161,6 +161,7 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable, BlockDataMeta {
                     .put(CraftMetaKnowledgeBook.class, "KNOWLEDGE_BOOK")
                     .put(CraftMetaTropicalFishBucket.class, "TROPICAL_FISH_BUCKET")
                     .put(CraftMetaCrossbow.class, "CROSSBOW")
+                    .put(CraftMetaArmorStand.class, "ARMOR_STAND")
                     .put(CraftMetaItem.class, "UNSPECIFIC")
                     .build();
 
@@ -1420,7 +1421,15 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable, BlockDataMeta {
                         CraftMetaKnowledgeBook.BOOK_RECIPES.NBT,
                         CraftMetaTropicalFishBucket.VARIANT.NBT,
                         CraftMetaCrossbow.CHARGED.NBT,
-                        CraftMetaCrossbow.CHARGED_PROJECTILES.NBT
+                        CraftMetaCrossbow.CHARGED_PROJECTILES.NBT,
+                        // Paper start
+                        CraftMetaArmorStand.ENTITY_TAG.NBT,
+                        CraftMetaArmorStand.INVISIBLE.NBT,
+                        CraftMetaArmorStand.NO_BASE_PLATE.NBT,
+                        CraftMetaArmorStand.SHOW_ARMS.NBT,
+                        CraftMetaArmorStand.SMALL.NBT,
+                        CraftMetaArmorStand.MARKER.NBT
+                        // Paper end
                 ));
             }
             return HANDLED_TAGS;
diff --git a/src/test/java/org/bukkit/craftbukkit/inventory/ItemMetaTest.java b/src/test/java/org/bukkit/craftbukkit/inventory/ItemMetaTest.java
index 6abde9030d..2a0852675b 100644
--- a/src/test/java/org/bukkit/craftbukkit/inventory/ItemMetaTest.java
+++ b/src/test/java/org/bukkit/craftbukkit/inventory/ItemMetaTest.java
@@ -6,6 +6,7 @@ import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
 import java.util.UUID;
+import com.destroystokyo.paper.inventory.meta.ArmorStandMeta; // Paper
 import net.minecraft.server.Block;
 import net.minecraft.server.IRegistry;
 import net.minecraft.server.ITileEntity;
@@ -344,7 +345,17 @@ public class ItemMetaTest extends AbstractTestingBase {
                     cleanStack.setItemMeta(meta);
                     return cleanStack;
                 }
+            },
+            // Paper start
+            new StackProvider(Material.ARMOR_STAND) {
+                @Override ItemStack operate(ItemStack cleanStack) {
+                    final ArmorStandMeta meta = (ArmorStandMeta) cleanStack.getItemMeta();
+                    meta.setInvisible(true);
+                    cleanStack.setItemMeta(meta);
+                    return cleanStack;
+                }
             }
+            // paper end
         );
 
         assertThat("Forgotten test?", providers, hasSize(ItemStackTest.COMPOUND_MATERIALS.length - 4/* Normal item meta, skulls, eggs and tile entities */));
-- 
2.21.0

