Set defaults with constructor to fix an error

Shared/Packet/Packets/ConnectPacket.cs

@@ -5,9 +5,11 @@ namespace Shared.Packet.Packets;
 
 [Packet(PacketType.Connect)]
 public struct ConnectPacket : IPacket {
-    public ConnectionTypes ConnectionType;
+    public ConnectionTypes ConnectionType = ConnectionTypes.FirstConnection;
     public string ClientName = "?????";
 
+    public ConnectPacket() { }
+
     public void Serialize(Span<byte> data) {
         MemoryMarshal.Write(data, ref ConnectionType);
         Encoding.UTF8.GetBytes(ClientName).CopyTo(data[4..(4 + Constants.CostumeNameSize)]);

Shared/Packet/Packets/PlayerPacket.cs

@@ -8,17 +8,17 @@ namespace Shared.Packet.Packets;
 public struct PlayerPacket : IPacket {
     public const int NameSize = 0x20;
 
-    public Vector3 Position;
-    public Quaternion Rotation;
+    public Vector3 Position = default;
+    public Quaternion Rotation = default;
 
     [MarshalAs(UnmanagedType.ByValArray, SizeConst = 6)]
-    public float[] AnimationBlendWeights;
+    public float[] AnimationBlendWeights = Array.Empty<float>();
 
-    public float AnimationRate;
-    public bool Is2d;
-    public bool ThrowingCap;
-    public bool IsIt;
-    public int ScenarioNum;
+    public float AnimationRate = 0;
+    public bool Is2d = false;
+    public bool ThrowingCap = false;
+    public bool IsIt = false;
+    public int ScenarioNum = 0;
 
     [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 0x40)]
     public string Stage = "";
@@ -32,6 +32,8 @@ public struct PlayerPacket : IPacket {
     [MarshalAs(UnmanagedType.ByValTStr, SizeConst = NameSize)]
     public string Hack = "";
 
+    public PlayerPacket() { }
+
     public void Serialize(Span<byte> data) {
         int offset = 0;
         MemoryMarshal.Write(data, ref Position);

Shared/Packet/Packets/UnhandledPacket.cs

@@ -5,6 +5,8 @@
 public struct UnhandledPacket : IPacket {
     public byte[] Data = new byte[Constants.PacketDataSize];
 
+    public UnhandledPacket() { }
+
     public void Serialize(Span<byte> data) {
         Data.CopyTo(data);
     }