diff --git a/src/AcDream.App/Rendering/CameraController.cs b/src/AcDream.App/Rendering/CameraController.cs
index 97ff925..c061450 100644
--- a/src/AcDream.App/Rendering/CameraController.cs
+++ b/src/AcDream.App/Rendering/CameraController.cs
@@ -5,8 +5,10 @@ public sealed class CameraController
 {
     public OrbitCamera Orbit { get; }
     public FlyCamera Fly { get; }
+    public ChaseCamera? Chase { get; private set; }
     public ICamera Active { get; private set; }
     public bool IsFlyMode => Active == Fly;
+    public bool IsChaseMode => Chase is not null && Active == Chase;
 
     public event Action<bool>? ModeChanged;
 
@@ -23,6 +25,20 @@ public sealed class CameraController
         ModeChanged?.Invoke(IsFlyMode);
     }
 
+    public void EnterChaseMode(ChaseCamera chase)
+    {
+        Chase = chase;
+        Active = chase;
+        ModeChanged?.Invoke(IsChaseMode);
+    }
+
+    public void ExitChaseMode()
+    {
+        Active = Fly;
+        Chase = null;
+        ModeChanged?.Invoke(IsFlyMode);
+    }
+
     public void SetAspect(float aspect)
     {
         Orbit.Aspect = aspect;