using UnityEngine;
using System.Collections;
using VRTK;

[AddComponentMenu("VRTK/Scripts/Pointers/VRTK_Pointer")]
public class BlockPlacer : MonoBehaviour
{


    public bool unlimitedBlocks = false;
    public int blocksLeft = 0;


    public bool lockCursor = true;


    static BlockPlacer obj;


    public GameObject blockPrefab;


    public float range = 7f;
    public VRTK.VRTK_ControllerEvents controllerEvents;

    bool lastTriggerClicked = false;

    void Start()
    {

        BlockPlacer.obj = this;
        var pointer = GetComponentInParent<VRTK_Pointer>();
    }

    void Update()
    {
        bool currentTriggerClicked = controllerEvents.triggerClicked;

        if (blocksLeft > 0 || unlimitedBlocks)
        {
            VRTK_Pointer.Toggle(true);
            if (currentTriggerClicked && currentTriggerClicked != lastTriggerClicked)
            {

                if (blocksLeft > 0 || unlimitedBlocks)
                {

                    Ray ray = new Ray(transform.position, transform.TransformDirection(Vector3.forward));
                    RaycastHit hit;


                    if (Physics.Raycast(ray, out hit, range))
                    {

                        Vector3 backup = ray.GetPoint(hit.distance - 0.2f);


                        Vector3 placeAt = new Vector3(
                            Mathf.RoundToInt(backup.x), Mathf.RoundToInt(backup.y), Mathf.RoundToInt(backup.z));


                        GameObject block = (GameObject)GameObject.Instantiate(blockPrefab, placeAt, Quaternion.Euler(Vector3.zero));


                        if (!unlimitedBlocks)
                            blocksLeft--;


                    }
                }
            }
        }

        lastTriggerClicked = currentTriggerClicked;
    }

    void OnGUI()
    {

        GUI.Box(new Rect(Screen.width / 2 - 5, Screen.height / 2 - 5, 5, 5), "");
    }


    public static void addBlocks(int i = 1)
    {
        BlockPlacer.obj.blocksLeft += i;
    }
}