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

public class GunMove : MonoBehaviour {
    GameObject bullet;
	// Use this for initialization
	void Start () {

        bullet = MakeCircle(20);
	}

	// Update is called once per frame
	void Update () {



        Vector3 mPos = Input.mousePosition;

        var pos = Camera.main.WorldToScreenPoint(transform.position);
        var dir = Input.mousePosition - pos;
        var angle = Mathf.Atan2(dir.y, dir.x) * Mathf.Rad2Deg;
        gameObject.transform.rotation = Quaternion.AngleAxis(angle, Vector3.forward);

        if(Input.GetKeyDown(KeyCode.Mouse0))
        {
            shoot();
        }

    }

    void shoot()
    {
        var outcome = GameObject.FindGameObjectsWithTag("Shooty");
        Vector3 sPos = outcome[0].transform.position;

        Vector2 aimPos = Input.mousePosition;

        var pos = Camera.main.WorldToScreenPoint(outcome[0].transform.position);

        GameObject projectile = Instantiate(bullet,sPos + transform.right*0.25f, transform.rotation, transform.parent);

        Rigidbody2D rb = projectile.GetComponent<Rigidbody2D>();
        rb.AddForce(transform.right * 10,ForceMode2D.Impulse);




        Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
        Debug.DrawRay(pos, aimPos);


    }

    public GameObject MakeCircle(int numOfPoints)
    {
        float angleStep = 360.0f / (float)numOfPoints;
        List<Vector3> vertexList = new List<Vector3>();
        List<int> triangleList = new List<int>();
        Quaternion quaternion = Quaternion.Euler(0.0f, 0.0f, angleStep);
        // Make first triangle.
        vertexList.Add(new Vector3(0.0f, 0.0f, 0.0f));  // 1. Circle center.
        vertexList.Add(new Vector3(0.0f, 0.5f, 0.0f));  // 2. First vertex on circle outline (radius = 0.5f)
        vertexList.Add(quaternion * vertexList[1]);     // 3. First vertex on circle outline rotated by angle)
                                                        // Add triangle indices.
        triangleList.Add(0);
        triangleList.Add(1);
        triangleList.Add(2);
        for (int i = 0; i < numOfPoints - 1; i++)
        {
            triangleList.Add(0);                      // Index of circle center.
            triangleList.Add(vertexList.Count - 1);
            triangleList.Add(vertexList.Count);
            vertexList.Add(quaternion * vertexList[vertexList.Count - 1]);
        }
        Mesh mesh = new Mesh();
        mesh.vertices = vertexList.ToArray();
        mesh.triangles = triangleList.ToArray();

        GameObject go = new GameObject("Test");
        Debug.Log("Another one wtf");
        Material material = Resources.Load("Materials/Damn", typeof(Material)) as Material;

        Vector3 vec = new Vector3();
        vec.Set(0.25f, 0.25f, 0.25f);
        go.transform.localScale = vec;

        PhysicsMaterial2D physicsBoy = new PhysicsMaterial2D();
        physicsBoy.friction = 0.4f;
        physicsBoy.bounciness = 0.4f;
        CircleCollider2D collider2d = go.AddComponent<CircleCollider2D>();

        collider2d.sharedMaterial = physicsBoy;

        Rigidbody2D rbody = go.AddComponent<Rigidbody2D>();
        rbody.simulated = true;
        rbody.mass = 1;
        rbody.drag = 0;
        rbody.angularDrag = 0.05f;
        rbody.gravityScale = 1;
        rbody.collisionDetectionMode = CollisionDetectionMode2D.Discrete;
        rbody.sleepMode = RigidbodySleepMode2D.StartAwake;
        rbody.interpolation = RigidbodyInterpolation2D.None;


        MeshFilter meshFilter = go.AddComponent<MeshFilter>();
        meshFilter.mesh = mesh;
        MeshRenderer spriteRenderer = go.AddComponent<MeshRenderer>();
        spriteRenderer.material = material;
        return go;
    }




}