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

public class Move : MonoBehaviour {
    public KeyCode upKey;
    public KeyCode downKey;
    public KeyCode rightKey;
    public KeyCode leftKey;

    public GameObject booster;

    public float speed = 16;

    public GameObject wallPrefab;

    int direction = 0;
    int boostSignal = 0;

    Vector2 lastWallEnd;

    void Start () {
        GetComponent<Rigidbody2D>().velocity = Vector2.up * speed;
        direction = 1;
        spawnWall();

        StartCoroutine(Spawn1());
    }

    IEnumerator Spawn1()
    {
        yield return new WaitForSeconds(2);
        Instantiate(booster, new Vector2(25, 25), Quaternion.identity);
        StartCoroutine(Spawn2());
    }

    IEnumerator Spawn2()
    {
        yield return new WaitForSeconds(2);
        Instantiate(booster, new Vector2(100, 50), Quaternion.identity);
        StartCoroutine(Spawn1());
    }

    void React()
    {
        transform.position = new Vector3(65.97f, 0, 0);
    }
    void spawnWall ()
    {
        lastWallEnd = transform.position;

        GameObject g = (GameObject)Instantiate(wallPrefab, transform.position, Quaternion.identity);
        wall = g.GetComponent<Collider2D>();
    }

    void fitColliderBetween(Collider2D co, Vector2 a, Vector2 b)
    {
        co.transform.position = a + (b - a) * 0.5f;

        float dist = Vector2.Distance(a, b);
        if (a.x != b.x)
            co.transform.localScale = new Vector2(dist + 1, 1);
        else
            co.transform.localScale = new Vector2(1, dist + 1);
    }

    void OnTriggerEnter2D(Collider2D co)
    {
        var wall = co.GetComponent<Wall>();
        var speedBoost = co.GetComponent<SpeedBoost>();

        if (wall != null)
        {
            print("Player lost:" + name);
            Destroy(gameObject);
        }

        if (speedBoost != null)
        {
            speed += 10f;
            boostSignal = 1;
            Destroy(booster);
        }

        if ((boostSignal == 1) && (direction == 1))
        {
            GetComponent<Rigidbody2D>().velocity = Vector2.up * speed;
            boostSignal = 0;
        }

        if ((boostSignal == 1) && (direction == 3))
        {
            GetComponent<Rigidbody2D>().velocity = -Vector2.up * speed;
            boostSignal = 0;
        }

        if ((boostSignal == 1) && (direction == 2))
        {
            GetComponent<Rigidbody2D>().velocity = Vector2.right * speed;
            boostSignal = 0;
        }

        if ((boostSignal == 1) && (direction == 4))
        {
            GetComponent<Rigidbody2D>().velocity = -Vector2.right * speed;
            boostSignal = 0;
        }
    }
    void Update () {
        if (Input.GetKeyDown(upKey))
        {
            GetComponent<Rigidbody2D>().velocity = Vector2.up * speed;
            direction = 1;
            spawnWall();
        }
        else if (Input.GetKeyDown(downKey))
        {
            GetComponent<Rigidbody2D>().velocity = -Vector2.up * speed;
            direction = 3;
            spawnWall();
        }
        else if (Input.GetKeyDown(rightKey))
        {
            GetComponent<Rigidbody2D>().velocity = Vector2.right * speed;
            direction = 2;
            spawnWall();
        }
        else if (Input.GetKeyDown(leftKey))
        {
            GetComponent<Rigidbody2D>().velocity = -Vector2.right * speed;
            direction = 4;
            spawnWall();
        }



        fitColliderBetween(wall, lastWallEnd, transform.position);
    }
}