using UnityEngine;
using System.Collections;

public class Invisibler : MonoBehaviour
{

	private float targetAlpha;
	private bool increase;
	private float speed = 1f;

	private Renderer[] rendererArr;
	private Material material;

	// Use this for initialization
	void Start ()
	{
//		Craft craft = GetComponent<Craft>();
//		if(craft.topPartTrans != null)
//		{
//			Renderer[] topRenderers = craft.topPartTrans.GetComponentsInChildren<SkinnedMeshRenderer>();
//			Renderer[] bottomRenderers = craft.bottomPartTrans.GetComponentsInChildren<SkinnedMeshRenderer>();
//			rendererArr = new Renderer[topRenderers.Length + bottomRenderers.Length];
//			for(int i=0; i<topRenderers.Length; i++)
//			{
//				rendererArr[i] = topRenderers[i];
//			}
//			for(int i=0; i<bottomRenderers.Length; i++)
//			{
//				rendererArr[topRenderers.Length + i] = bottomRenderers[i];
//			}
//		}
//		else
//		{
//			rendererArr = craft.bodyTrans.GetComponentsInChildren<SkinnedMeshRenderer>();
//		}
//		material = Instantiate<Material>(Resources.Load<Material> (Config.SHADOW_MATERIAL));
//		material.mainTexture = rendererArr[0].material.mainTexture;
//		for(int i=0; i<rendererArr.Length; i++)
//		{
//			rendererArr[i].material = material;
//		}
	}
	
	// Update is called once per frame
	void Update ()
	{
		bool allDone = true;

		Color color = material.color;
		float value = speed * GameTime.deltaTime;
		if(increase)
		{
			color.a += value;
			if(color.a >= targetAlpha)
			{
				color.a = targetAlpha;
				Craft craft = GetComponent<Craft>();
				for(int i=0; i<rendererArr.Length; i++)
				{
					rendererArr[i].material = craft.material;
				}
			}
			else
			{
				allDone = false;
			}
		}
		else
		{
			color.a -= value;
			if(color.a <= targetAlpha)
			{
				color.a = targetAlpha;
			}
			else
			{
				allDone = false;
			}
		}

		material.color = color;

		if(allDone)
		{
			Destroy(this);
		}
	}

	public static void Start(BattleObject battleObj, float alpha, bool increase)
	{
		Invisibler inv = battleObj.gameObject.AddComponent<Invisibler>();
		inv.targetAlpha = alpha;
		inv.increase = increase;
	}
}