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Snapshot Interpolation Demo: simulate 1 fps

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This commit is contained in:
vis2k 2023-03-10 14:25:46 +08:00
parent 5f2c38f8b2
commit 60f021e543
1 changed files with 32 additions and 1 deletions
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33
Assets/Mirror/Examples/Snapshot Interpolation/ClientCube.cs
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@ -94,6 +94,10 @@ public class ClientCube : MonoBehaviour
public Color slowdownColor = Color.red; // red traffic light = go slow
Color defaultColor;
[Header("Simulation")]
bool lowFpsMode;
double accumulatedDeltaTime;
void Awake()
{
defaultColor = render.sharedMaterial.color;
@ -145,6 +149,15 @@ public void OnMessage(Snapshot3D snap)
void Update()
{
// accumulated delta allows us to simulate correct low fps + deltaTime
// if necessary in client low fps mode.
accumulatedDeltaTime += Time.unscaledDeltaTime;
// simulate low fps mode. only update once per second.
// to simulate webgl background tabs, etc.
// after a while, disable low fps mode and see how it behaves.
if (lowFpsMode && accumulatedDeltaTime < 1) return;
// only while we have snapshots.
// timeline starts when the first snapshot arrives.
if (snapshots.Count > 0)
@ -155,7 +168,9 @@ void Update()
// step
SnapshotInterpolation.Step(
snapshots,
Time.unscaledDeltaTime,
// accumulate delta is Time.unscaledDeltaTime normally.
// and sum of past 10 delta's in low fps mode.
accumulatedDeltaTime,
ref localTimeline,
localTimescale,
out Snapshot3D fromSnapshot,
@ -175,6 +190,9 @@ void Update()
}
}
// reset simulation helpers
accumulatedDeltaTime = 0;
// color material while catching up / slowing down
if (localTimescale < 1)
render.material.color = slowdownColor;
@ -193,6 +211,19 @@ void OnGUI()
Vector2 screen = Camera.main.WorldToScreenPoint(transform.position);
string str = $"{snapshots.Count}";
GUI.Label(new Rect(screen.x - width / 2, screen.y - height / 2, width, height), str);
// client simulation buttons on the bottom of the screen
float areaHeight = 100;
GUILayout.BeginArea(new Rect(0, Screen.height - areaHeight, Screen.width, areaHeight));
GUILayout.BeginHorizontal();
GUILayout.Label("Client Simulation:");
if (GUILayout.Button((lowFpsMode ? "Disable" : "Enable") + " 1 FPS"))
{
lowFpsMode = !lowFpsMode;
}
GUILayout.FlexibleSpace();
GUILayout.EndHorizontal();
GUILayout.EndArea();
}
void OnValidate()