using UnityEngine;

namespace StixGames.GrassShader
{
    [AddComponentMenu("Stix Games/Deprecated/Grass Regenerator")]
    public class GrassRegenerator : MonoBehaviour
	{
		public float regenerationSpeed = 1;

		private Texture2D texture;
		private readonly Color originalColor = new Color(0.5f, 0.5f,1,1);

		void Update ()
		{
			if (texture == null)
			{
				texture = GrassManipulationUtility.GetGrassTexture(transform, false);
			}

			Color[] pixels = texture.GetPixels();

			for (int i = 0; i < pixels.Length; i++)
			{
				pixels[i] = Color.Lerp(pixels[i], originalColor, regenerationSpeed * Time.deltaTime);
			}

			texture.SetPixels(pixels);

			//Search for texture updater, which prevents multiply applys per frame (for multiple displacers)
			TextureUpdater updater = GetComponent<TextureUpdater>();

			if (updater == null)
			{
				updater = gameObject.AddComponent<TextureUpdater>();
				updater.targetTexture = texture;
			}

			updater.RequestTextureUpdate();
		}
	}
}