Add force sync frames.

Assets/Cryville/Crtr/ChartPlayer.cs

@@ -54,8 +54,8 @@ namespace Cryville.Crtr {
 		static bool disableGC = true;
 		static float clippingDist = 1f;
 		static float renderDist = 6f;
-		static float renderStep = 0.05f;
-		public static float actualRenderStep = 0f;
+		static double renderStep = 0.05;
+		public static double actualRenderStep = 0;
 		static bool autoRenderStep = false;
 		public static float soundOffset = 0;
 		static float startOffset = 0;
@@ -111,7 +111,7 @@ namespace Cryville.Crtr {
 
 		bool texloaddone;
 		diag::Stopwatch texloadtimer = new diag::Stopwatch();
-		bool firstFrame;
+		int forceSyncFrames;
 		double atime0;
 		void Update() {
 			if (started) GameUpdate();
@@ -123,10 +123,18 @@ namespace Cryville.Crtr {
 			try {
 				if (Screen.width != screenSize.x || Screen.height != screenSize.y)
 					throw new InvalidOperationException("Window resized while playing");
-				float dt = firstFrame
-						? 1f / Application.targetFrameRate
-						: Time.deltaTime;
-				firstFrame = false;
+				double dt, step;
+				if (forceSyncFrames != 0) {
+					forceSyncFrames--;
+					double target = Game.AudioClient.Position - atime0;
+					dt = target - cbus.Time;
+					step = autoRenderStep ? 1f / Application.targetFrameRate : renderStep;
+					inputProxy.SyncTime(target);
+				}
+				else {
+					dt = Time.deltaTime;
+					step = autoRenderStep ? Time.smoothDeltaTime : renderStep;
+				}
 				inputProxy.ForceTick();
 				cbus.ForwardByTime(dt);
 				bbus.ForwardByTime(dt);
@@ -135,10 +143,6 @@ namespace Cryville.Crtr {
 				bbus.CopyTo(2, tbus);
 				bbus.CopyTo(3, nbus);
 				UnityEngine.Profiling.Profiler.EndSample();
-				float step = autoRenderStep ? ( firstFrame
-						? 1f / Application.targetFrameRate
-						: Time.smoothDeltaTime
-					) : renderStep;
 				actualRenderStep = step;
 
 				nbus.ForwardStepByTime(clippingDist, step);
@@ -250,14 +254,15 @@ namespace Cryville.Crtr {
 			status.text = sttext;
 		}
 		void OnCameraPostRender(Camera cam) {
+			if (!started) return;
 			if (!logEnabled) return;
-			if (started) timetext = string.Format(
-				"\nSTime: {0:R}\nATime: {1:R}\nITime: {2:R}",
+			timetext = string.Format(
+				"\nSTime: {0:R}s {3}\ndATime: {1:+0.0ms;-0.0ms;0} {3}\ndITime: {2:+0.0ms;-0.0ms;0} {3}",
 				cbus.Time,
-				Game.AudioClient.Position - atime0,
-				inputProxy.GetTimestampAverage()
+				(Game.AudioClient.Position - atime0 - cbus.Time) * 1e3,
+				(inputProxy.GetTimestampAverage() - cbus.Time) * 1e3,
+				forceSyncFrames != 0 ? "(force sync)" : ""
 			);
-			else timetext = string.Empty;
 		}
 		#endregion
 
@@ -309,7 +314,7 @@ namespace Cryville.Crtr {
 			autoRenderStep = renderStep == 0;
 			soundOffset = Settings.Default.SoundOffset;
 			startOffset = Settings.Default.StartOffset;
-			firstFrame = true;
+			forceSyncFrames= Settings.Default.ForceSyncFrames;
 			texloaddone = false;
 			Game.NetworkTaskWorker.SuspendBackgroundTasks();
 			Game.AudioSession = Game.AudioSequencer.NewSession();

Assets/Cryville/Crtr/InputProxy.cs

@@ -232,8 +232,7 @@ namespace Cryville.Crtr {
 		public void SyncTime(double time) {
 			foreach (var s in _sproxies.Keys) {
 				var h = s.Handler;
-				if (!_timeOrigins.ContainsKey(h)) 
-					_timeOrigins.Add(h, h.GetCurrentTimestamp() - time);
+				_timeOrigins[h] = h.GetCurrentTimestamp() - time;
 			}
 		}
 		public void ForceTick() {

Assets/Cryville/Crtr/Settings.cs

@@ -34,6 +34,17 @@ namespace Cryville.Crtr {
 			}
 		}
 
+		[Category("gameplay")]
+		[Range(-1, 5)]
+		public int ForceSyncFrames {
+			get {
+				return PlayerPrefs.GetInt("ForceSyncFrames", 5);
+			}
+			set {
+				PlayerPrefs.SetInt("ForceSyncFrames", value);
+			}
+		}
+
 		[Browsable(false)]
 		[Category("data")]
 		[Description("The directory where the game files are stored.")]