Unity中HMD双眼分显角色动画及切换实现技术问询

Hey raisa_! Great job getting the per-eye visibility working already— that's a solid foundation for your HMD project. Let's walk through how to add those animation transition effects you're looking for. Here are a few practical, Unity-native approaches tailored to your setup:

Since you've already got each character locked to one eye via culling masks, extending this with animation transitions is straightforward:

• First, make sure each character's Animator Controller has distinct states for your base animation, transition animation, and target animation (e.g., "LeftBase", "LeftTransition", "LeftNew" for the left-eye character).
• Add a trigger or boolean parameter to the Animator (like StartLeftTransition) to kick off the state change.
• In your script, when your transition condition is met (user input, timer, etc.), fire that parameter. Then, add an Animation Event at the end of your transition clip to automatically switch to the target animation state.
• Pro tip: Keep your left/right Animator parameters separate so you can trigger transitions independently if needed.

If you want a seamless blend instead of a discrete transition clip:

• Use Unity's built-in Animator.CrossFadeInFixedTime() method to blend directly from your current animation to the new one. Since each character is only visible to one eye, the cross-fade will happen independently for left and right.
• Here's a quick code snippet you can adapt:

  // Attach to your left-eye character
  public class LeftEyeAnimController : MonoBehaviour
  {
      [SerializeField] private Animator _leftAnimator;
      [SerializeField] private string _targetAnimName = "LeftNewAnimation";
      [SerializeField] private float _fadeTime = 0.4f;
  
      public void TriggerLeftTransition()
      {
          // Cross-fade from current state to target
          _leftAnimator.CrossFadeInFixedTime(_targetAnimName, _fadeTime);
      }
  }
  

• Repeat this script structure for your right-eye character, adjusting the animator and target animation name accordingly.

If your two animations are on entirely separate GameObjects (not just states in the same Animator):

• Set up simple transition tweens (fade, slide, scale) using Unity's Animation system or native coroutines.
• When switching:
  1. Start the "old" object's exit tween (e.g., fade out over 0.3 seconds).
  2. At the same time, start the "new" object's enter tween (e.g., fade in over 0.3 seconds).
  3. Use a coroutine or animation event to deactivate the old object and activate the new one once the tweens finish—making sure both stay locked to their respective eye's culling mask the whole time.

• Always test with your HMD (or Unity's XR Preview window) to check how transitions look both with both eyes open (overlapping) and single-eye. You might want to sync transition timings if you want a cohesive feel, or keep them independent if that's part of your design.
• Double-check your camera culling masks during transitions—don't accidentally set a character to be visible to both eyes mid-switch, as that would break your core requirement.

内容的提问来源于stack exchange，提问作者raisa_