using UnityEngine;

namespace AQUAS
{
	public class AQUAS_Caustics : MonoBehaviour
	{
		public float fps;

		public Texture2D[] frames;

		public float maxCausticDepth;

		private int frameIndex;

		private Projector projector;

		private float currentScale;

		private float aspectRatio;

		[HideInInspector]
		public float waterLevel;

		[HideInInspector]
		public bool overrideWaterLevel;

		private void Start()
		{
			projector = GetComponent<Projector>();
			NextFrame();
			InvokeRepeating("NextFrame", 1f / fps, 1f / fps);
			projector.material.SetFloat("_WaterLevel", base.transform.parent.transform.position.y);
			projector.material.SetFloat("_DepthFade", base.transform.parent.transform.position.y - maxCausticDepth);
			currentScale = base.transform.parent.localScale.z;
			aspectRatio = base.transform.parent.localScale.x / base.transform.parent.localScale.z;
			waterLevel = base.transform.parent.position.y;
		}

		private void Update()
		{
			if (overrideWaterLevel && base.transform.parent == null)
			{
				projector.material.SetFloat("_DepthFade", waterLevel - maxCausticDepth);
			}
			else
			{
				if (base.transform.parent == null)
				{
					return;
				}
				projector.material.SetFloat("_DepthFade", base.transform.parent.transform.position.y - maxCausticDepth);
			}
			if (overrideWaterLevel)
			{
				currentScale = 1000f;
				GetComponent<Projector>().orthographicSize = currentScale;
			}
			else
			{
				if (base.transform.parent == null)
				{
					return;
				}
				currentScale = Mathf.Max(base.transform.parent.localScale.x, base.transform.parent.localScale.z) * 5f;
				if (currentScale != base.transform.parent.localScale.z)
				{
					GetComponent<Projector>().orthographicSize = currentScale;
				}
				if (aspectRatio != base.transform.parent.localScale.x / base.transform.parent.localScale.z)
				{
					aspectRatio = base.transform.parent.localScale.x / base.transform.parent.localScale.z;
					GetComponent<Projector>().aspectRatio = aspectRatio;
				}
			}
			if (overrideWaterLevel)
			{
				projector.material.SetFloat("_WaterLevel", waterLevel);
			}
			else if (waterLevel != base.transform.parent.position.y)
			{
				waterLevel = base.transform.parent.position.y;
				projector.material.SetFloat("_WaterLevel", waterLevel);
			}
		}

		private void NextFrame()
		{
			projector.material.SetTexture("_Texture", frames[frameIndex]);
			frameIndex = (frameIndex + 1) % frames.Length;
		}
	}
}