using UnityEngine;
using System.Collections;
using System.Collections.Generic;


public class Inventory : MonoBehaviour
{
	public Item[] itemsinInventory;
	public Item blankItem;
	public Texture2D box;
	public Texture2D highlighted;
	public int selectedItem;
	public int maxItem = 7;


	void Start()
	{
		for (int i = 0; i < maxItem; i++)
		{
			itemsinInventory[i] = blankItem;
		}


	}

	public void addItem(Item a)
	{
		for (int i = 0; i < maxItem; i++)
		{
			if(itemsinInventory[i] = blankItem)
			{
				itemsinInventory[i] = a;

				return;
			}
		}
	}

	public void removeItem()
	{
		itemsinInventory [selectedItem].useItem ();

		for (int i = selectedItem; i < maxItem-1; i++)
		{
			itemsinInventory[i] = itemsinInventory[i+1];
		}

		itemsinInventory [maxItem-1] = blankItem;
	}

	void Update()
	{
		if (Input.GetAxis ("Scroll") > 0)
		{
			if(selectedItem == maxItem-1)
				selectedItem = 0;
			else
				selectedItem++;
		}

		if (Input.GetAxis ("Scroll") < 0)
		{
			if(selectedItem == 0)
				selectedItem = maxItem-1;
			else
				selectedItem--;
		}

		if (Input.GetKeyUp (KeyCode.G)) {
						removeItem ();
		}
	}

	void OnGUI()
	{
		for (int i = 0; i < maxItem; i++)
		{
			if(i == selectedItem)
			{
				GUI.DrawTexture (new Rect ((i * 70)+330, 600, 60, 60), selectedItem);
			}

			else if (itemsinInventory [i] != blankItem)
			{
				GUI.Box (new Rect ((i * 70)+330, 600, 60, 60), itemsinInventory [i].Icon);

			}
			else
			{
				GUI.Box (new Rect ((i * 70)+330, 600, 60, 60), "");
			}

		}
	}

}