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

public class Graple : MonoBehaviour
{
    //Vareables
    private Vector2 mousePos;

    //Component refranses
    public Camera mainCamera;
    public LineRenderer _lineRenderer;
    public DistanceJoint2D _distanceJoint;

    // Start is called before the first frame update
    void Start()
    {
        _distanceJoint.enabled = false;
    }

    /// <summary>
    /// Update is called once per frame and calculates if teh grapple should be active, and how the
    /// grapple should effect the player
    /// </summary>
    void Update()
    {
        //Checking if the player is grappleing
        if (Input.GetKeyDown(KeyCode.Mouse1))
        {
            // Calculating the mouse position in the world space
            mousePos = (Vector2)mainCamera.ScreenToWorldPoint(Input.mousePosition);

            // Creating a line from the mouse position to the player's position
            _lineRenderer.SetPosition(0, mousePos);
            _lineRenderer.SetPosition(1, transform.position);
            _distanceJoint.connectedAnchor = mousePos;

            //Enableing the grapple
            _distanceJoint.enabled = true;
            _lineRenderer.enabled = true;

            //Checking if the player has stoped grapling
        }
        else if (Input.GetKeyUp(KeyCode.Mouse1))
        {
            //Disabling the graple
            _distanceJoint.enabled = false;
            _lineRenderer.enabled = false;
        }

        // Checking if the grapple is still active
        if (_distanceJoint.enabled)
        {
            // Updating the line to for the current player position
            _lineRenderer.SetPosition(1, transform.position);
        }
    }
}