如何让场景中的Camera Node跟随可操纵的Plane Node移动？

Hey there! Let's get that camera stuck to your plane so it never drifts out of view while you're flying with the joystick. Here are some easy-to-implement solutions, starting with the most common scenario in Unity:

This is the simplest fix—just lock the camera's position to your plane's position plus a fixed offset:

• Create a new C# script named CameraFollow and attach it to your Camera Node.
• Paste this code into the script:

  public Transform planeTransform; // Assign your Plane node here in the Inspector
  public Vector3 cameraOffset; // Adjust this to set your desired camera angle/distance
  
  void LateUpdate()
  {
      // Update camera position to match the plane's position plus your offset
      transform.position = planeTransform.position + cameraOffset;
      // Optional: Make the camera always face the plane
      transform.LookAt(planeTransform);
  }
  

• In the Unity Inspector, drag your Plane node into the planeTransform field of the CameraFollow component.
• Tweak the cameraOffset values (try something like (0, 6, -12) for a nice behind-and-above view) until you're happy with the perspective.

If you want the camera to ease into position instead of snapping instantly (great for a more cinematic feel), modify the script like this:

public Transform planeTransform;
public Vector3 cameraOffset;
public float smoothFollowSpeed = 0.15f; // Lower = slower, smoother follow

void LateUpdate()
{
    Vector3 targetPosition = planeTransform.position + cameraOffset;
    // Lerp between current camera position and target position for smoothness
    Vector3 smoothedPosition = Vector3.Lerp(transform.position, targetPosition, smoothFollowSpeed);
    transform.position = smoothedPosition;
    transform.LookAt(planeTransform);
}

• Play around with smoothFollowSpeed to find the right balance between responsiveness and smoothness.

The core logic stays the same—tie the camera's position to the plane's position with an offset:

• Unreal Engine: Use a built-in Follow Camera component (attach it to your plane, then adjust the offset in the component settings), or create a Blueprint that updates the camera's location every frame using the plane's transform.
• Godot: Attach a script to your Camera node, get a reference to your Plane, and add this to the _process() function:

  extends Camera
  
  @onready var plane = $Path/To/Your/Plane # Replace with your plane's node path
  var camera_offset = Vector3(0, 5, -10) # Adjust as needed
  
  func _process(delta):
      global_position = plane.global_position + camera_offset
      look_at(plane.global_position) # Optional: Keep camera facing the plane
  

A quick pro tip: Always update the camera's position after the plane's movement logic runs (like using LateUpdate() in Unity or _process() after physics steps in Godot). This prevents jitter by ensuring the camera uses the plane's final position for the current frame.

内容的提问来源于stack exchange，提问作者CTC_CUS