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

public class SwipeDetect : MonoBehaviour
{
    private bool swiping = false;
    private float length = 0;
    private Vector3 startPos;
    private Vector3 endPos;
    private Vector3 final;
    public float ballHeight = 1.893F;
    private Vector3 ballStart;

    public GameObject catapultLeft;
    public GameObject catapultRight;

    private SpringJoint leftJoint;
    private SpringJoint rightJoint;

    public bool newBall = false;

    // Start is called before the first frame update
    public void Start()
    {
        leftJoint = catapultLeft.GetComponent<SpringJoint>();
        rightJoint = catapultRight.GetComponent<SpringJoint>();
    }

    // Update is called once per frame
    void Update()
    {
        if (Input.touchCount > 0 && Input.GetTouch(0).phase == TouchPhase.Began)
        {
            ballStart = transform.position;
            ballStart.y = 0;
            final = Vector3.zero;
            length = 0;
            swiping = false;
            Vector2 touchPos = Input.GetTouch(0).position;
            startPos = new Vector3(touchPos.x / 100, 0, touchPos.y / 100);
        }
        if (Input.touchCount > 0 && (Input.GetTouch(0).phase == TouchPhase.Moved || Input.GetTouch(0).phase == TouchPhase.Stationary))
        {
            swiping = true;
            Vector2 touchPos = Input.GetTouch(0).position;
            Vector3 tempPos = new Vector3(touchPos.x / 100, 0, touchPos.y / 100);
            Vector3 updatePos = (tempPos - startPos);
            updatePos.y = ballHeight + (updatePos.z / 2);
            //Debug.Log(ballStart + updatePos);
            transform.position = ballStart + updatePos;
            //Debug.Log(updatePos);
        }
        if (Input.touchCount > 0 && (Input.GetTouch(0).phase == TouchPhase.Canceled))
        {
            swiping = false;
        }
        if (Input.touchCount > 0 && Input.GetTouch(0).phase == TouchPhase.Ended && swiping)
        {
            Vector2 touchPos = Input.GetTouch(0).position;
            endPos = new Vector3(touchPos.x / 100, 0, touchPos.y / 100);
            final = endPos - startPos;
            final *= -1; //reverse vector for fling effect
            length = final.magnitude;

            foreach (Component c in GetComponents<SpringJoint>())
            {
                Destroy(c);
            }

            catapultLeft.GetComponent<LineRenderer>().enabled = false;
            catapultRight.GetComponent<LineRenderer>().enabled = false;

            newBall = true;
        }
    }
}