using Godot;

public partial class StudentPortrait16Native : Node2D {
	/// <summary>
	///     饰品精灵
	/// </summary>
	private Sprite2D _accessory;

	/// <summary>
	///     动画播放器
	/// </summary>
	private AnimationPlayer _animationPlayer;

	/// <summary>
	///     身体精灵
	/// </summary>
	private Sprite2D _body;

	/// <summary>
	///     眼睛精灵
	/// </summary>
	private Sprite2D _eye;

	/// <summary>
	///     发型精灵
	/// </summary>
	private Sprite2D _hairstyle;

    // Called when the node enters the scene tree for the first time.
    public override void _Ready() {
        _animationPlayer = GetNodeOrNull<AnimationPlayer>("AnimationPlayer");
        CacheSprites();

        if (_animationPlayer != null) _animationPlayer.AnimationFinished += OnAnimationFinished;

        PlayAnimation("speak");
    }

    /// <summary>
    ///     缓存精灵节点
    /// </summary>
    private void CacheSprites() {
        // 缓存子节点引用，避免每帧查找
        _body = GetNode<Sprite2D>("parts/body");
        _hairstyle = GetNode<Sprite2D>("parts/hairstyle");
        _eye = GetNode<Sprite2D>("parts/eye");
        _accessory = GetNode<Sprite2D>("parts/accessory");
    }

    /// <summary>
    ///     播放指定动画
    /// </summary>
    /// <param name="animationName">动画名称</param>
    private void PlayAnimation(string animationName) {
        if (_animationPlayer == null) return;

        if (_animationPlayer.CurrentAnimation != animationName) _animationPlayer.Play(animationName);
    }

    /// <summary>
    ///     动画结束回调
    /// </summary>
    /// <param name="animationName">动画名称</param>
    private void OnAnimationFinished(StringName animationName) {
	    _animationPlayer?.Play(animationName);
    }

    // Called every frame. 'delta' is the elapsed time since the previous frame.
    public override void _Process(double delta) { }
}