using TMPro;
using UnityEngine;
using UnityEngine.Playables;

public class SubtitleTrackMixer : PlayableBehaviour
{
    public override void ProcessFrame(Playable playable, FrameData info, object playerData)
    {
        var text = playerData as TextMeshProUGUI;

        var currentText = "";

        if (!text) { return; }
        
        for (var i = 0; i < playable.GetInputCount(); i++)
        {
            if (playable.GetInputWeight(i) <=0)
                continue;
            
            var inputPlayable = (ScriptPlayable<SubtitleTrackBehaviour>)playable.GetInput(i);
            var input = inputPlayable.GetBehaviour();
            
            if (input.subtitleText != "")
            {
                currentText = input.subtitleText;
            }
        }
        
        text.text = currentText;
    }
}