Started work on #20

nms/v1_8_R1/src/main/java/net/jitse/npclib/nms/v1_8_R1/NPC_v1_8_R1.java

@@ -5,17 +5,17 @@
 package net.jitse.npclib.nms.v1_8_R1;
 
 import net.jitse.npclib.NPCLib;
+import net.jitse.npclib.api.state.NPCSlot;
 import net.jitse.npclib.hologram.Hologram;
 import net.jitse.npclib.internal.MinecraftVersion;
 import net.jitse.npclib.internal.SimpleNPC;
-import net.jitse.npclib.nms.v1_8_R1.packets.PacketPlayOutEntityHeadRotationWrapper;
-import net.jitse.npclib.nms.v1_8_R1.packets.PacketPlayOutNamedEntitySpawnWrapper;
-import net.jitse.npclib.nms.v1_8_R1.packets.PacketPlayOutPlayerInfoWrapper;
-import net.jitse.npclib.nms.v1_8_R1.packets.PacketPlayOutScoreboardTeamWrapper;
+import net.jitse.npclib.nms.v1_8_R1.packets.*;
 import net.minecraft.server.v1_8_R1.*;
 import org.bukkit.Bukkit;
 import org.bukkit.craftbukkit.v1_8_R1.entity.CraftPlayer;
+import org.bukkit.craftbukkit.v1_8_R1.inventory.CraftItemStack;
 import org.bukkit.entity.Player;
+import org.bukkit.inventory.ItemStack;
 
 import java.util.HashSet;
 import java.util.List;
@@ -97,4 +97,41 @@ public class NPC_v1_8_R1 extends SimpleNPC {
 
         hologram.destroy(player);
     }
+
+    @Override
+    public void sendMetadataPacket(Player player) {
+        PlayerConnection playerConnection = ((CraftPlayer) player).getHandle().playerConnection;
+        PacketPlayOutEntityMetadata packet = new PacketPlayOutEntityMetadataWrapper().create(activeStates, entityId);
+
+        playerConnection.sendPacket(packet);
+    }
+
+    @Override
+    public void sendEquipmentPacket(Player player, NPCSlot slot) {
+        PlayerConnection playerConnection = ((CraftPlayer) player).getHandle().playerConnection;
+
+        ItemStack item;
+        switch (slot) {
+            case HELMET:
+                item = helmet;
+                break;
+            case CHESTPLATE:
+                item = chestplate;
+                break;
+            case LEGGINGS:
+                item = leggings;
+                break;
+            case BOOTS:
+                item = boots;
+                break;
+            case IN_HAND:
+                item = inHand;
+                break;
+            default:
+                throw new IllegalArgumentException("Slot is not recognized");
+        }
+
+        PacketPlayOutEntityEquipment packet = new PacketPlayOutEntityEquipment(entityId, slot.getSlot(), CraftItemStack.asNMSCopy(item));
+        playerConnection.sendPacket(packet);
+    }
 }

nms/v1_8_R1/src/main/java/net/jitse/npclib/nms/v1_8_R1/packets/PacketPlayOutEntityMetadataWrapper.java

@@ -0,0 +1,16 @@
+package net.jitse.npclib.nms.v1_8_R1.packets;
+
+import net.jitse.npclib.api.state.NPCState;
+import net.minecraft.server.v1_8_R1.DataWatcher;
+import net.minecraft.server.v1_8_R1.PacketPlayOutEntityMetadata;
+
+public class PacketPlayOutEntityMetadataWrapper {
+
+    public PacketPlayOutEntityMetadata create(NPCState[] activateStates, int entityId) {
+        DataWatcher dataWatcher = new DataWatcher(null);
+        byte masked = NPCState.getMasked(activateStates);
+        dataWatcher.a(0, masked);
+
+        return new PacketPlayOutEntityMetadata(entityId, dataWatcher, true);
+    }
+}