SPIGOT-974: Add ArmorStand locking API

nms-patches/EntityArmorStand.patch

@@ -16,6 +16,15 @@
  public class EntityArmorStand extends EntityLiving {
  
      private static final Vector3f bj = new Vector3f(0.0F, 0.0F, 0.0F);
+@@ -29,7 +38,7 @@
+     private final NonNullList<ItemStack> armorItems;
+     private boolean armorStandInvisible;
+     public long bi;
+-    private int bv;
++    public int bv; //PAIL private -> public, rename disabledSlots
+     public Vector3f headPose;
+     public Vector3f bodyPose;
+     public Vector3f leftArmPose;
 @@ -55,6 +64,13 @@
          this.setPosition(d0, d1, d2);
      }

src/main/java/org/bukkit/craftbukkit/entity/CraftArmorStand.java

@@ -2,9 +2,11 @@ package org.bukkit.craftbukkit.entity;
 
 import net.minecraft.server.EntityArmorStand;
 import net.minecraft.server.Vector3f;
+import org.bukkit.craftbukkit.CraftEquipmentSlot;
 import org.bukkit.craftbukkit.CraftServer;
 import org.bukkit.entity.ArmorStand;
 import org.bukkit.entity.EntityType;
+import org.bukkit.inventory.EquipmentSlot;
 import org.bukkit.inventory.ItemStack;
 import org.bukkit.util.EulerAngle;
 
@@ -211,4 +213,19 @@ public class CraftArmorStand extends CraftLivingEntity implements ArmorStand {
     public void setMarker(boolean marker) {
         getHandle().setMarker(marker);
     }
+
+    @Override
+    public void addEquipmentLock(EquipmentSlot equipmentSlot, LockType lockType) {
+        getHandle().bv |= (1 << CraftEquipmentSlot.getNMS(equipmentSlot).c() + lockType.ordinal() * 8); // PAIL c() rename getSlotFlag()
+    }
+
+    @Override
+    public void removeEquipmentLock(EquipmentSlot equipmentSlot, LockType lockType) {
+        getHandle().bv &= ~(1 << CraftEquipmentSlot.getNMS(equipmentSlot).c() + lockType.ordinal() * 8);
+    }
+
+    @Override
+    public boolean hasEquipmentLock(EquipmentSlot equipmentSlot, LockType lockType) {
+        return (getHandle().bv & (1 << CraftEquipmentSlot.getNMS(equipmentSlot).c() + lockType.ordinal() * 8)) != 0;
+    }
 }