fix: set head rotation in entity spawn packet (#147)

Co-authored-by: Pasqual Koschmieder <git@derklaro.dev>

Author: noah-stapp

bukkit/src/main/java/com/github/juliarn/npclib/bukkit/protocol/PacketEventsPacketAdapter.java

@@ -165,7 +165,7 @@ final class PacketEventsPacketAdapter implements PlatformPacketAdapter<World, Pl
           location.getPosition(),
           location.getPitch(),
           location.getYaw(),
-          0,
+          location.getYaw(),
           0,
           Optional.empty());
       } else {

bukkit/src/main/java/com/github/juliarn/npclib/bukkit/protocol/ProtocolLibPacketAdapter.java

@@ -291,7 +291,8 @@ final class ProtocolLibPacketAdapter implements PlatformPacketAdapter<World, Pla
         // yaw is byte 1, pitch is byte 0
         container.getBytes()
           .write(1, (byte) (npc.position().yaw() * 256F / 360F))
-          .write(0, (byte) (npc.position().pitch() * 256F / 360F));
+          .write(0, (byte) (npc.position().pitch() * 256F / 360F))
+          .write(2, (byte) (npc.position().yaw() * 256F / 360F)); // head rotation
       } else {
         // yaw is byte 0, pitch is byte 1
         container.getBytes()

fabric/src/main/java/com/github/juliarn/npclib/fabric/protocol/FabricProtocolAdapter.java

@@ -239,12 +239,12 @@ private FabricProtocolAdapter() {
         pos.x(),
         pos.y(),
         pos.z(),
-        0F,
-        0F,
+        pos.pitch(),
+        pos.yaw(),
         EntityType.PLAYER,
         0,
         Vec3.ZERO,
-        0F);
+        pos.yaw());
       player.connection.send(packet);
     };
   }

minestom/src/main/java/com/github/juliarn/npclib/minestom/protocol/MinestomProtocolAdapter.java

@@ -226,7 +226,7 @@ private MinestomProtocolAdapter() {
         npc.profile().uniqueId(),
         EntityType.PLAYER.id(),
         position,
-        0F,
+        position.yaw(),
         0,
         (short) 0,
         (short) 0,