working replay system

Content/Scenes/AerowalkScene.scene

@@ -1,7 +1,7 @@
 {
 	"ID": "194e05f445ece24ec5448d886e1334df",
 	"TypeName": "FlaxEngine.SceneAsset",
-	"EngineBuild": 6226,
+	"EngineBuild": 6330,
 	"Data": [
 		{
 			"ID": "194e05f445ece24ec5448d886e1334df",
@@ -70,13 +70,13 @@
 			"Transform": {
 				"Translation": {
 					"X": 0.0,
-					"Y": 226.0,
+					"Y": 716.0,
 					"Z": 0.0
 				}
 			},
 			"Control": "FlaxEngine.GUI.Label",
 			"Data": {
-	"Text": "eFPS: 61\nuFPS: 60\nrFPS: 60\npFPS: 30\nCon: NaNms\nDirectX11",
+	"Text": "eFPS: 120\nuFPS: 120\nrFPS: 120\npFPS: 30",
 	"TextColor": {
 		"R": 1.0,
 		"G": 1.0,
@@ -123,9 +123,9 @@
 	},
 	"Offsets": {
 		"Left": 0.0,
-		"Right": 71.0,
-		"Top": -562.0,
-		"Bottom": 96.0
+		"Right": 57.0,
+		"Top": -97.0,
+		"Bottom": 64.0
 	},
 	"Scale": {
 		"X": 1.0,
@@ -164,8 +164,8 @@
 			"Name": "ContainerControl 0",
 			"Transform": {
 				"Translation": {
-					"X": 45849.0,
-					"Y": -12.0,
+					"X": 45644.0,
+					"Y": 0.5,
 					"Z": 0.0
 				}
 			},

Content/Settings/EngineSettings/PhysicsSettings.json

@@ -1,7 +1,7 @@
 {
 	"ID": "4bd8a4cc460399b5f1975fbe0a668e3f",
 	"TypeName": "FlaxEditor.Content.Settings.PhysicsSettings",
-	"EngineBuild": 6226,
+	"EngineBuild": 6330,
 	"Data": {
 	"DefaultGravity": {
 		"X": 0.0,
@@ -17,8 +17,8 @@
 	"EnableAdaptiveForce": false,
 	"MaxDeltaTime": 0.1,
 	"EnableSubstepping": false,
-	"SubstepDeltaTime": 0.008333334,
-	"MaxSubsteps": 5,
+	"SubstepDeltaTime": 0.001,
+	"MaxSubsteps": 60,
 	"SupportCookingAtRuntime": true,
 	"LayerMasks": [
 		4294967295,

Content/Settings/EngineSettings/TimeSettings.json

@@ -1,9 +1,9 @@
 {
 	"ID": "a55dc3c04da4ea3744b7f1994565beac",
 	"TypeName": "FlaxEditor.Content.Settings.TimeSettings",
-	"EngineBuild": 6226,
+	"EngineBuild": 6330,
 	"Data": {
-	"UpdateFPS": 120.0,
+	"UpdateFPS": 0.0,
 	"PhysicsFPS": 120.0,
 	"DrawFPS": 120.0,
 	"TimeScale": 1.0,

GoakeFlax.code-workspace

@@ -14,7 +14,7 @@
 		},
 		{
 			"name": "Flax",
-			"path": "C:\\dev\\Flax\\FlaxEngine"
+			"path": "C:\\dev\\Flax\\Flax_master"
 		}
 	]
 }

Source/Game/Cabrito/Console/ConsoleContentTextBox.cs

@@ -461,7 +461,9 @@ namespace Cabrito
 			else if (key == KeyboardKeys.PageUp)
 			{
 				ScrollOffset += GetHeightInLines() / 2;
-				var maxOffset = Console.Lines.Count - GetHeightInLines();
+				// should count the wrapped line count here over Console.Lines.Count
+				//var maxOffset = Console.Lines.Count - GetHeightInLines();
+				var maxOffset = Console.Lines.Count - 1;
 				if (ScrollOffset > maxOffset)
 					ScrollOffset = maxOffset;
 			}

Source/Game/Cabrito/FpsScript.cs

@@ -88,8 +88,7 @@ namespace Cabrito
 			sb.Append("\nuFPS: " + ((int) Math.Round(1.0f / updateTimeAvg)).ToString());
 			sb.Append("\nrFPS: " + ((int) Math.Round(1.0f / drawTimeAvg)).ToString());
 			sb.Append("\npFPS: " + ((int) Math.Round(1.0f / physicsTimeAvg)).ToString());
-			sb.Append("\nCon: " + conTime.ToString() + "ms");
-			sb.Append("\n" + currentRenderer);
+			//sb.Append("\nCon: " + conTime.ToString() + "ms");
 			//sb.Append("\nGC memory: " + (GC.GetTotalMemory(false) / 1000000.0f).ToString() + "MB");
 			//sb.Append("\nUpdate profiler: " + updateProfTime.ToString() + "ms");
 

Source/Game/PlayerInput.cs

@@ -16,6 +16,10 @@ namespace Game
 		public float moveRight;
 		public bool attacking;
 		public bool jumping;
+
+		public Vector3 verificationPosition;
+		public Vector3 verificationVelocity;
+		public Quaternion verificationOrientation;
 	}
 
 	[StructLayout(LayoutKind.Sequential)]
@@ -36,7 +40,6 @@ namespace Game
 
 	public class PlayerInput
 	{
-		public PlayerState lastState;
 		public PlayerState currentState;
 		public ulong frame;
 
@@ -54,9 +57,8 @@ namespace Game
 		{
 		}
 
-		public void RecordCurrentActorState(PlayerActorState actorState)
+		public virtual void RecordCurrentActorState(PlayerActorState actorState)
 		{
-			currentState.actor = actorState;
 		}
 
 		public PlayerInputState GetCurrentInputState()

Source/Game/PlayerInputDemo.cs

@@ -35,7 +35,7 @@ namespace Game
 			{
 				int rawsize = Marshal.SizeOf(typeof(T));
 				if (rawsize > rawData.Length - position)
-					throw new ArgumentException("Not enough data to fill struct. Array length from position: "+(rawData.Length-position) + ", Struct length: "+rawsize);
+					throw new ArgumentException("Not enough data to fill struct. Array length from position: " + (rawData.Length-position) + ", Struct length: " + rawsize);
 				IntPtr buffer = Marshal.AllocHGlobal(rawsize);
 				Marshal.Copy(rawData, position, buffer, rawsize);
 				T retobj = (T)Marshal.PtrToStructure(buffer, typeof(T));
@@ -56,21 +56,19 @@ namespace Game
 			bufferEnumerable = buffer.GetEnumerator();
 
 			Console.Print("demo numstates: " + buffer.Count);
+
+			OnEndFrame(); // advances to first frame
 		}
 
-		public override void OnUpdate()
-		{
-			lastState = currentState;
-		}
-
-		public override void OnFixedUpdate()
-		{
-		}
-
+		private int asdf = 0;
 		public override void OnEndFrame()
 		{
 			// TODO: check if the current state frame matches the current frame number before advancing
 
+			/*asdf++;
+			if (asdf < 8)
+				return;*/
+
 			if (bufferEnumerable == null || !bufferEnumerable.MoveNext())
 			{
 				if (buffer.Any())
@@ -85,6 +83,7 @@ namespace Game
 
 			//var actorState = currentState.actor;
 			currentState.input = bufferEnumerable.Current;
+			//frame++;
 			//currentState.actor = actorState;
 		}
 	}

Source/Game/PlayerInputLocal.cs

@@ -4,6 +4,7 @@ using System.IO;
 using System.Net;
 using System.Runtime.InteropServices;
 using FlaxEngine;
+using Console = Cabrito.Console;
 
 namespace Game
 {
@@ -14,10 +15,6 @@ namespace Game
 
 		public bool IsRecording { get { return demoFileStream != null; } }
 
-		public PlayerInputLocal()
-		{
-		}
-
 		public PlayerInputLocal(string demoPath)
 		{
 			demoFileStream = File.Open(demoPath, FileMode.Create, FileAccess.Write);
@@ -29,32 +26,55 @@ namespace Game
 
 		public override void OnUpdate()
 		{
-			lastState = currentState;
+			// Collect anything framerate independent here like camera movement
+			// All axis values here should be accumulated, and binary actions OR'ed
+			currentState.input.viewDeltaX += InputManager.GetAxisRaw("Mouse X");
+			currentState.input.viewDeltaY += InputManager.GetAxisRaw("Mouse Y");
 
-			// Record camera angles here?
-			currentState.input.viewDeltaX = InputManager.GetAxisRaw("Mouse X");
-			currentState.input.viewDeltaY = InputManager.GetAxisRaw("Mouse Y");
-		}
-
-		public override void OnFixedUpdate()
-		{
-			// Record intent here
 			currentState.input.moveForward = InputManager.GetAxis("Vertical");
 			currentState.input.moveRight = InputManager.GetAxis("Horizontal");
 			currentState.input.attacking = InputManager.GetAction("Attack");
 			currentState.input.jumping = InputManager.GetAction("Jump");
 		}
 
+		public override void OnFixedUpdate()
+		{
+			// Collect all input here
+			/*currentState.input.moveForward = InputManager.GetAxis("Vertical");
+			currentState.input.moveRight = InputManager.GetAxis("Horizontal");
+			currentState.input.attacking = InputManager.GetAction("Attack");
+			currentState.input.jumping = InputManager.GetAction("Jump");*/
+		}
+
 		public override void OnEndFrame()
 		{
 			if (IsRecording)
 			{
+				currentState.input.verificationPosition = currentState.actor.position;
+				currentState.input.verificationOrientation = currentState.actor.orientation;
+				currentState.input.verificationVelocity = currentState.actor.velocity;
+
 				currentState.input.frame = frame;
 				buffer.Add(currentState.input);
 			}
+
+			// Reset anything accumulatable here
+			currentState.input.viewDeltaX = 0;
+			currentState.input.viewDeltaY = 0;
+
 			frame++;
 		}
 
+		public override void RecordCurrentActorState(PlayerActorState actorState)
+		{
+			if (!IsRecording)
+				return;
+
+			if (actorState.position.Length <= 0.01)
+				Console.Print("wrong recorded position?");
+			currentState.actor = actorState;
+		}
+
 		public void FlushDemo()
 		{
 			if (!IsRecording)

Source/Game/PlayerMovement.cs

@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using FlaxEngine;
 using System.Diagnostics;
 using System.Threading.Tasks;
+using FlaxEditor.CustomEditors.Editors;
 using FlaxEngine.Assertions;
 using Console = Cabrito.Console;
 using Debug = FlaxEngine.Debug;
@@ -42,6 +43,10 @@ namespace Game
 		private float viewYaw;
 		private float viewRoll;
 
+		private float viewPitchLastFrame;
+		private float viewYawLastFrame;
+		private float viewRollLastFrame;
+
 		private InputEvent onExit = new InputEvent("Exit");
 
 		// FIXME, should be much smaller but needed to avoid issues with box collider edges against brush edges diagonally
@@ -56,8 +61,19 @@ namespace Game
 		{
 			base.OnAwake();
 
-			input = new PlayerInputLocal(@"C:\dev\GoakeFlax\testdemo.gdem"); // record
-			//input = new PlayerInputDemo(@"C:\dev\GoakeFlax\testdemo.gdem"); //playback
+			bool record = false;
+			//record = true;
+
+			if (record)
+			{
+				input = new PlayerInputLocal(@"C:\dev\GoakeFlax\testdemo.gdem"); // record
+			}
+			else
+			{
+				//input = new PlayerInputLocal();
+				input = new PlayerInputDemo(@"C:\dev\GoakeFlax\testdemo.gdem"); //playback
+				//input = new PlayerInputDemo(@"C:\dev\GoakeFlax\testdemo_desync.gdem"); //playback
+			}
 
 			onExit.Triggered += () =>
 			{
@@ -73,6 +89,8 @@ namespace Game
 			//rigidBody.CollisionEnter += OnCollisionEnter;
 			//rigidBody.TriggerEnter += OnTriggerEnter;
 			//rigidBody.TriggerExit += OnTriggerExit;
+
+			startupTime = Time.TimeSinceStartup;
 		}
 
 		public override void OnDisable()
@@ -120,13 +138,25 @@ namespace Game
 			viewPitch = initialEulerAngles.X;
 			viewYaw = initialEulerAngles.Y;
 			viewRoll = initialEulerAngles.Z;
+			viewPitchLastFrame = viewPitch;
+			viewYawLastFrame = viewYaw;
+			viewRollLastFrame = viewRoll;
 		}
 
+		private int lastInputFrame = 0;
+		private int currentInputFrame = 0;
+		private int currentInputFrame2 = 0;
+		private float startupTime = 0f;
 		public override void OnUpdate()
 		{
+			//input.OnUpdate();
+
+			if (input is PlayerInputDemo /*&& currentInputFrame2 >= currentInputFrame*/)
+				return;
+
 			input.OnUpdate();
 
-			if (input.frame > 0)
+			/*if (input.frame > 0)
 			{
 				PlayerActorState actorState = input.GetCurrentActorState();
 				Actor.Position = actorState.position;
@@ -134,11 +164,96 @@ namespace Game
 				viewYaw = actorState.viewYaw;
 				viewPitch = actorState.viewPitch;
 				viewRoll = actorState.viewRoll;
-			}
+			}*/
 
 			PlayerInputState inputState = input.GetCurrentInputState();
 
-			// Update camera view
+			viewYaw = viewYawLastFrame;
+			viewPitch = viewPitchLastFrame;
+			viewRoll = viewRollLastFrame;
+			ApplyInputToCamera(inputState);
+
+			/*input.RecordCurrentActorState(new PlayerActorState()
+			{
+				position = Actor.Position,
+				velocity = currentVelocity,
+				orientation = rootActor.Orientation,
+				viewYaw = viewYaw,
+				viewPitch = viewPitch,
+				viewRoll = viewRoll
+			});*/
+			currentInputFrame2++;
+		}
+
+		private Vector3 fixedPosition = Vector3.Zero;
+		private bool newframe = false;
+
+		public override void OnFixedUpdate()
+		{
+			if (input is PlayerInputDemo)
+				input.OnUpdate();
+
+			input.OnFixedUpdate();
+			PlayerInputState inputState = input.GetCurrentInputState();
+
+			if (input is PlayerInputDemo)
+				ApplyInputToCamera(inputState);
+
+
+			SimulatePlayerMovement(inputState);
+
+			if (input is PlayerInputDemo)
+			{
+				// verify
+				float positionDelta = (Actor.Position - inputState.verificationPosition).Length;
+				if (positionDelta > 0.00001)
+					Console.Print("pos delta: " + positionDelta + "   " + (Actor.Position - inputState.verificationPosition));
+
+				float velocityDelta = (currentVelocity - inputState.verificationVelocity).Length;
+				if (velocityDelta > 0.00001)
+					Console.Print("pos vel: " + velocityDelta);
+
+				float orientationDelta = (rootActor.Orientation - inputState.verificationOrientation).Length;
+				if (orientationDelta > 0.00001)
+					Console.Print("pos orient: " + rootActor.Orientation);
+
+				//if (currentInputFrame == 0)
+				/*{
+					//Console.Print("repos: " + inputState.verificationPosition);
+					Actor.Position = inputState.verificationPosition;
+					currentVelocity = inputState.verificationVelocity;
+					rootActor.Orientation = inputState.verificationOrientation;
+				}*/
+			}
+
+			input.RecordCurrentActorState(new PlayerActorState()
+			{
+				position = Actor.Position,
+				velocity = currentVelocity,
+				orientation = rootActor.Orientation,
+				viewYaw = viewYaw,
+				viewPitch = viewPitch,
+				viewRoll = viewRoll
+			});
+			input.OnEndFrame();
+
+
+
+
+			lastInputFrame = currentInputFrame;
+			currentInputFrame++;
+
+			viewPitchLastFrame = viewPitch;
+			viewYawLastFrame = viewYaw;
+			viewRollLastFrame = viewRoll;
+
+			fixedPosition = Actor.Position;
+			newframe = true;
+		}
+
+		private void ApplyInputToCamera(PlayerInputState inputState)
+		{
+			// Update camera viewf
 			float xAxis = inputState.viewDeltaX;
 			float yAxis = inputState.viewDeltaY;
 			if (xAxis != 0.0f || yAxis != 0.0f)
@@ -148,56 +263,24 @@ namespace Game
 				viewPitch = Mathf.Clamp(viewPitch + yAxis, -90.0f, 90.0f);
 				viewYaw += xAxis;
 
-
 				// root orientation must be set first
 				rootActor.Orientation = Quaternion.Euler(0, viewYaw, 0);
 				camera.Orientation = Quaternion.Euler(viewPitch, viewYaw, viewRoll);
 			}
-
-			input.RecordCurrentActorState(new PlayerActorState()
-			{
-				position = Actor.Position,
-				velocity = currentVelocity,
-				viewYaw = viewYaw,
-				viewPitch = viewPitch,
-				viewRoll = viewRoll
-			});
 		}
 
-		public override void OnFixedUpdate()
-		{
-			input.OnFixedUpdate();
-			PlayerInputState inputState = input.GetCurrentInputState();
-
-			SimulatePlayerMovement(inputState);
-
-			input.RecordCurrentActorState(new PlayerActorState()
-			{
-				position = Actor.Position,
-				velocity = currentVelocity,
-				viewYaw = viewYaw,
-				viewPitch = viewPitch,
-				viewRoll = viewRoll
-			});
-			input.OnEndFrame();
-		}
-
-
-
-		private bool SweepPlayerCollider(Vector3 start, Vector3 end, out RayCastHit[] hits)
+		private static bool SweepPlayerCollider(Actor actor, Vector3 start, Vector3 end, out RayCastHit[] hits)
 		{
 			Vector3 delta = end - start;
 			float maxDistance = delta.Length;
 			Vector3 direction = delta.Normalized;
 
 			bool collided = false;
-			var capsuleCollider = Actor.GetChild<CapsuleCollider>();
-			var boxCollider = Actor.GetChild<BoxCollider>();
-			var meshCollider = Actor.GetChild<MeshCollider>();
-			PhysicsColliderActor colliderActor = null;
+			var capsuleCollider = actor.GetChild<CapsuleCollider>();
+			var boxCollider = actor.GetChild<BoxCollider>();
+			var meshCollider = actor.GetChild<MeshCollider>();
 			if (capsuleCollider && capsuleCollider.IsActive)
 			{
-				colliderActor = capsuleCollider;
 				collided = Physics.CapsuleCastAll(start,
 					capsuleCollider.Radius, capsuleCollider.Height,
 					direction, out hits, capsuleCollider.Orientation, maxDistance,
@@ -206,7 +289,6 @@ namespace Game
 			}
 			else if (meshCollider && meshCollider.IsActive)
 			{
-				colliderActor = meshCollider;
 				collided = Physics.ConvexCastAll(start,
 					meshCollider.CollisionData, meshCollider.Scale,
 					direction, out hits, meshCollider.Orientation, maxDistance,
@@ -215,7 +297,6 @@ namespace Game
 			}
 			else if (boxCollider && boxCollider.IsActive)
 			{
-				colliderActor = boxCollider;
 				collided = Physics.BoxCastAll(start,
 					boxCollider.OrientedBox.Extents,
 					direction, out hits, boxCollider.Orientation, maxDistance,
@@ -291,10 +372,11 @@ namespace Game
 		/// <summary>
 		/// Sweeps the player rigidbody in world and returns geometry which was hit during the trace.
 		/// </summary>
+		/// <param name="actor">Player actor</param>
 		/// <param name="start">Start position</param>
 		/// <param name="end">End position</param>
 		/// <returns></returns>
-		private TraceInfo TracePlayer(Vector3 start, Vector3 end)
+		private static TraceInfo TracePlayer(Actor actor, Vector3 start, Vector3 end)
 		{
 			TraceInfo traceInfo = new TraceInfo();
 
@@ -302,7 +384,7 @@ namespace Game
 			float maxDistance = delta.Length;
 			Vector3 direction = delta.Normalized;
 
-			bool collided = SweepPlayerCollider(start, end, out traceInfo.hitInfos);
+			bool collided = SweepPlayerCollider(actor, start, end, out traceInfo.hitInfos);
 			if (collided)
 			{
 				List<RayCastHit> hitInfosFiltered = new List<RayCastHit>();
@@ -312,7 +394,7 @@ namespace Game
 				{
 					//if (hitInfo.Collider == colliderActor)
 					//	continue;
-					if (hitInfo.Collider.Parent == Actor)
+					if (hitInfo.Collider.Parent == actor)
 						continue;
 
 					hitInfosFiltered.Add(hitInfo);
@@ -411,7 +493,7 @@ namespace Game
 		}
 #endif
 
-		private SlideMoveHit StepSlideMove(ref Vector3 position, ref Vector3 velocity, bool onGround)
+		private static SlideMoveHit StepSlideMove(Actor actor, ref Vector3 position, ref Vector3 velocity, bool onGround)
 		{
 			if (velocity.IsZero)
 				return SlideMoveHit.Nothing;
@@ -419,7 +501,7 @@ namespace Game
 			Vector3 originalPosition = position;
 			Vector3 originalVelocity = velocity;
 
-			SlideMoveHit slideMoveHit = SlideMove(ref position, ref velocity);
+			SlideMoveHit slideMoveHit = SlideMove(actor, ref position, ref velocity);
 			if (slideMoveHit == SlideMoveHit.Nothing)
 			{
 				// TODO: step down here
@@ -438,16 +520,16 @@ namespace Game
 
 				// step up
 				Vector3 stepUp = position + stepDelta;
-				TraceInfo traceUp = TracePlayer(position, stepUp);
+				TraceInfo traceUp = TracePlayer(actor, position, stepUp);
 				if (traceUp.fraction > 0f)
 					position = traceUp.endPosition;
 
 				// try moving from step up position
-				SlideMoveHit slideMoveStepHit = SlideMove(ref position, ref velocity);
+				SlideMoveHit slideMoveStepHit = SlideMove(actor, ref position, ref velocity);
 
 				// step down
 				Vector3 stepDown = position - stepDelta;
-				TraceInfo traceDown = TracePlayer(position, stepDown);
+				TraceInfo traceDown = TracePlayer(actor, position, stepDown);
 				if (traceDown.fraction < 1f && -Vector3.Dot(Physics.Gravity.Normalized, traceDown.hitNormal) < slopeNormal)
 				{
 					// can't step down, slide move like normally
@@ -508,7 +590,7 @@ namespace Game
 			Other = 4,
 		}
 
-		private SlideMoveHit SlideMove(ref Vector3 position, ref Vector3 velocity)
+		private static SlideMoveHit SlideMove(Actor actor, ref Vector3 position, ref Vector3 velocity)
 		{
 			if (velocity.IsZero)
 				return SlideMoveHit.Nothing;
@@ -526,7 +608,7 @@ namespace Game
 				Vector3 startPos = position;
 				Vector3 endPos = position + (velocity * timeleft);
 
-				TraceInfo trace = TracePlayer(startPos, endPos);
+				TraceInfo trace = TracePlayer(actor, startPos, endPos);
 				// TODO: handle portals here
 
 				float fraction = trace.fraction;
@@ -725,7 +807,7 @@ namespace Game
 			Vector3 groundDelta = Physics.Gravity.Normalized;//Physics.Gravity.Normalized * (collisionMargin * 2);
 			//if (velocity.Y < 0f)
 			//	groundDelta = Physics.Gravity.Normalized * velocity.Y * Time.DeltaTime;
-			TraceInfo traceGround = TracePlayer(position, position + groundDelta);
+			TraceInfo traceGround = TracePlayer(Actor, position, position + groundDelta);
 
 			if (!traceGround.startSolid && traceGround.fraction < 1f &&
 			    -Vector3.Dot(Physics.Gravity.Normalized, traceGround.hitNormal) < slopeNormal)
@@ -742,8 +824,10 @@ namespace Game
 				Vector3 point = (position + groundDelta) +
 				                (1f - traceGround.fraction) * bounce;
 
+				Console.Print("backoff: " + backoff);
+
 				// retrace
-				traceGround = TracePlayer(position, position + point);
+				traceGround = TracePlayer(Actor, position, position + point);
 			}
 
 			if (!traceGround.startSolid && (traceGround.fraction >= 1f ||
@@ -751,9 +835,12 @@ namespace Game
 			{
 				// falling or sliding down a slope
 				onGround = false;
+
 			}
 			else
 			{
+				//if (onGround != !traceGround.startSolid)
+				//	Console.Print("slidefrac: " + traceGround.fraction);
 				onGround = !traceGround.startSolid;
 				//Console.Print("issolid? :" + traceGround.startSolid);
 			}
@@ -770,6 +857,7 @@ namespace Game
 			// jump
 			if (onGround && jumpAction && !jumped)
 			{
+
 				// reset velocity from gravity
 				if (-Vector3.Dot(Physics.Gravity.Normalized, velocity) < 0 &&
 				    Vector3.Dot(velocity, traceGround.hitNormal) < -0.1)
@@ -782,7 +870,7 @@ namespace Game
 				jumped = true;
 				lastJumped = Time.GameTime;
 
-				var jumpLandSound = JumpLandSound;
+				/*var jumpLandSound = JumpLandSound;
 				for (int i = 0; i < 10; i++)
 				{
 					var r = soundRandom.Next(3);
@@ -808,7 +896,7 @@ namespace Game
 					audioSource.Play();
 					Destroy(audioSource, jumpLandSound.Length);
 					lastJumpLandSound = jumpLandSound;
-				}
+				}*/
 			}
 
 			if (onGround)
@@ -874,15 +962,16 @@ namespace Game
 
 				// apply gravity
 				velocity += Physics.Gravity * Time.DeltaTime;
+				//Console.Print(Time.DeltaTime.ToString());
 			}
 
-			safePosition = rigidBody.Position;
+			//safePosition = rigidBody.Position;
 			currentVelocity = velocity;
-			if (!rigidBody.IsKinematic)
+			/*if (!rigidBody.IsKinematic)
 				rigidBody.LinearVelocity = velocity;
-			else
+			else*/
 			{
-				StepSlideMove(ref position, ref velocity, onGround);
+				StepSlideMove(Actor, ref position, ref velocity, onGround);
 
 				rigidBody.Position = position;
 				currentVelocity = velocity;
@@ -890,7 +979,7 @@ namespace Game
 			}
 		}
 
-		void ApplyAcceleration(ref Vector3 velocity, Vector3 wishDir, float wishspeed, float maxWishspeed,
+		private static void ApplyAcceleration(ref Vector3 velocity, Vector3 wishDir, float wishspeed, float maxWishspeed,
 			float acceleration)
 		{
 			float wishspeedOrig = wishspeed;

Source/Game/Q3MapImporter.cs

@@ -27,6 +27,7 @@ namespace Game
 		public Dictionary<string, MaterialBase> brushMaterials;
 	}
 
+	[ExecuteInEditMode]
 	public class Q3MapImporter : Script
 	{
 		//private string mapPath = @"C:\dev\GoakeFlax\Assets\Maps\cube_q1.map";
@@ -188,6 +189,25 @@ namespace Game
 
 		public override void OnStart()
 		{
+			LoadMap(false);
+		}
+
+		private void LoadMap(bool forceLoad)
+		{
+			Actor worldSpawnActor = Actor.GetChild("WorldSpawn");
+			if (worldSpawnActor != null)
+			{
+				if (forceLoad)
+				{
+					worldSpawnActor.DestroyChildren();
+				}
+				else
+				{
+					//Console.Print("Map already loaded in the scene");
+					return;
+				}
+			}
+
 			{
 				var workDir = Directory.GetCurrentDirectory();
 				var matBasePath = Path.Combine(workDir, "Content", "Materials");
@@ -218,8 +238,11 @@ namespace Game
 					}
 				}
 
-				var worldSpawnActor = Actor.AddChild<Actor>();
-				worldSpawnActor.Name = "WorldSpawn";
+				if (worldSpawnActor == null)
+				{
+					worldSpawnActor = Actor.AddChild<Actor>();
+					worldSpawnActor.Name = "WorldSpawn";
+				}
 
 				List<BrushGeometry> brushGeometries = new List<BrushGeometry>(root.entities[0].brushes.Count);
 
@@ -265,7 +288,8 @@ namespace Game
 									materials.Add(textureName, brushMaterial);
 								else
 								{
-									Console.Print("Material '" + textureName + "' not found for brush");
+									// TODO: engine doesn't seem to always load the asset even though it exists, bug? seems to happen at low framerate
+									Console.Print("Material '" + textureName + "' not found for brush, assetPath: " + assetPath);
 									materials.Add(textureName, missingMaterial);
 									brushMaterial = missingMaterial;
 								}