First version of Server Authorized movement logic for bedrock

src/Alex/Entities/PlayerController.cs

@@ -20,6 +20,7 @@
 using Microsoft.Xna.Framework;
 using Microsoft.Xna.Framework.Graphics;
 using Microsoft.Xna.Framework.Input;
+using MiNET.Net;
 using MiNET.Utils;
 using MiNET.Utils.Vectors;
 using NLog;
@@ -462,19 +463,7 @@ private void UpdateMovementInput(GameTime gt)
 			var moveVector = Vector3.Zero;
 			var now = DateTime.UtcNow;
 
-			/*if (InputManager.IsPressed(AlexInputCommand.Jump) || InputManager.IsPressed(InputCommand.MoveUp))
-			{
-				if (now.Subtract(_lastUp).TotalMilliseconds <= 250)
-				{
-					Player.SetFlying(!Player.IsFlying);
-				}
-
-				_lastUp = now;
-			}*/
-
-			//float speedFactor = (float)Player.CalculateMovementSpeed();
-
-		    bool holdingDownSprint = InputManager.IsDown(AlexInputCommand.Sprint);
+			bool holdingDownSprint = InputManager.IsDown(AlexInputCommand.Sprint);
 
 		    bool canSwim = Player.CanSwim && Player.FeetInWater && Player.HeadInWater;
 
@@ -639,6 +628,39 @@ private void UpdateMovementInput(GameTime gt)
 			LastVelocity = Player.Velocity;
 	    }
 
+	    public AuthInputFlags GetInputFlags()
+	    {
+		    AuthInputFlags inputFlags = 0;
+
+		 //   bool holdingDownSprint = InputManager.IsDown(AlexInputCommand.Sprint);
+
+		    if (InputManager.IsDown(AlexInputCommand.MoveForwards))
+			    inputFlags |= AuthInputFlags.Up;
+
+		    if (InputManager.IsDown(AlexInputCommand.MoveBackwards))
+			    inputFlags |= AuthInputFlags.Down;
+
+		    if (InputManager.IsDown(AlexInputCommand.MoveLeft))
+			    inputFlags |= AuthInputFlags.Left;
+
+		    if (InputManager.IsDown(AlexInputCommand.MoveRight))
+			    inputFlags |= AuthInputFlags.Right;
+
+		    if (InputManager.IsDown(AlexInputCommand.Sneak))
+			    inputFlags |= AuthInputFlags.SneakDown;
+
+		    if (InputManager.IsDown(AlexInputCommand.Sprint))
+			    inputFlags |= AuthInputFlags.SprintDown;
+
+		    if (InputManager.IsDown(AlexInputCommand.Jump))
+			    inputFlags |= AuthInputFlags.Jumping;
+
+		    //if (InputManager.IsDown(AlexInputCommand.))
+			 //   inputFlags |= AuthInputFlags.WantUp;
+
+		    return inputFlags;
+	    }
+
 	    public bool Disposed { get; private set; } = false;
 	    /// <inheritdoc />
 	    public void Dispose()

src/Alex/Net/Bedrock/BedrockClient.cs

@@ -100,6 +100,7 @@ public class BedrockClient : NetworkProvider, IDisposable
 		private readonly List<IDisposable> _disposables = new List<IDisposable>();
 		public BedrockTransactionTracker TransactionTracker { get; }
 		public bool ServerAuthoritiveInventory { get; set; } = false;
+		public bool ServerAuthoritiveMovement { get; set; } = false;
 
 		public BlockCoordinates ChunkPublisherPosition { get; set; } = BlockCoordinates.Zero;
 		public uint ChunkPublisherRadius { get; set; } = 0;

src/Alex/Net/Bedrock/BedrockClientPacketHandler.cs

@@ -225,7 +225,8 @@ public void HandleMcpeStartGame(McpeStartGame message)
 		{
 			if (message.movementType > 0)
 			{
-				Log.Warn($"!!! Server uses server-authoritive movement, only client-auth is currently supported.");
+				Client.ServerAuthoritiveMovement = true;
+				Log.Warn($"!!! Server uses server-authoritive movement, this is not yet FULLY supported!");
 			}
 
 			try

src/Alex/Worlds/Multiplayer/BedrockWorldProvider.cs

@@ -109,12 +109,40 @@ public override void OnTick()
 			}
 		}
 
+        private PlayerLocation _previousPlayerLocation = new PlayerLocation();
 		private void SendLocation(PlayerLocation location)
 		{
-			Client.SendMcpeMovePlayer(new PlayerLocation(location.X, location.Y + Player.EyeLevel, location.Z, -location.HeadYaw,-location.Yaw, location.Pitch)
+			if (Client.ServerAuthoritiveMovement)
 			{
-				OnGround = location.OnGround
-			}, 0, World.Time);
+				var player = World?.Player;
+
+				if (player == null)
+					return;
+
+				var delta = location.ToVector3() - _previousPlayerLocation.ToVector3();
+
+				var heading = player.Movement.Heading;
+				McpePlayerAuthInput input = McpePlayerAuthInput.CreateObject();
+				input.InputFlags = player.Controller.GetInputFlags();
+				input.Position = new System.Numerics.Vector3(location.X, location.Y, location.Z);
+				input.Yaw = location.Yaw;
+				input.HeadYaw = location.HeadYaw;
+				input.Pitch = location.Pitch;
+				input.MoveVecX = heading.X;
+				input.MoveVecZ = heading.Z;
+				input.Delta = new System.Numerics.Vector3(delta.X, delta.Y, delta.Z);
+
+				Client.SendPacket(input);
+
+				_previousPlayerLocation = location;
+			}
+			else
+			{
+				Client.SendMcpeMovePlayer(
+					new PlayerLocation(
+						location.X, location.Y + Player.EyeLevel, location.Z, -location.HeadYaw, -location.Yaw,
+						location.Pitch) { OnGround = location.OnGround }, 0, World.Time);
+			}
 		}
 
 		private void UnloadChunks(ChunkCoordinates center, double maxViewDistance)