using UnityEngine;
using System.Collections;


public class WeaponRifle : WeaponBase
{
    public override void OnOwner(PlayerCommand cmd, BoltEntity entity)
    {
        if (entity.isOwner)
        {
            IPlayerState state = entity.GetState<IPlayerState>();
            PlayerController controller = entity.GetComponent<PlayerController>();

            Vector3 pos;
            Quaternion look;

            // this calculate the looking angle for this specific entity
            PlayerCamera.instance.CalculateCameraAimTransform(entity.transform, state.pitch, out pos, out look);

            // display debug
            Debug.DrawRay(pos, look * Vector3.forward);

            //NEW
            float impactDistance = 100.0f;
            Ray r = new Ray(pos, look * Vector3.forward);
            RaycastHit rh;
            if (Physics.Raycast(r, out rh))
            {
                impactDistance = rh.distance;
                Debug.Log("Unity Raycast impactDistance: " + impactDistance);
                Debug.Log("pos: " + pos + "  rh.point: " + rh.point + " V3.Distance: " + Vector3.Distance(pos, rh.point));
            }


            using (var hits = BoltNetwork.RaycastAll(new Ray(pos, look * Vector3.forward), cmd.ServerFrame))
            {
                for (int i = 0; i < hits.count; ++i)
                {
                    var hit = hits.GetHit(i);
                    

                    //NEW: watch for impacts.  If hit other collider firtst, don't hit player.
                    if (hit.distance < impactDistance)
                    {
                        Debug.Log("Bolt hit.distance: " + hit.distance );
                        Debug.Log("pos: " + pos + "  hit.body.transform.position: " + hit.body.transform.position +" V3.Distance: " + Vector3.Distance(pos, hit.body.transform.position));

                        var serializer = hit.body.GetComponent<PlayerController>();
                        if ((serializer != null) && (serializer.state.team != state.team))
                        {
                            serializer.ApplyDamage(controller.activeWeapon.damagePerBullet);
                        }

                    }
                }
            }
        }
    }

    //Unchanged
    public override void Fx(BoltEntity entity)
    {
        Vector3 pos;
        Quaternion rot;
        PlayerCamera.instance.CalculateCameraAimTransform(entity.transform, entity.GetState<IPlayerState>().pitch, out pos, out rot);

        Ray r = new Ray(pos, rot * Vector3.forward);
        RaycastHit rh;

        if (Physics.Raycast(r, out rh) && impactPrefab)
        {
            var en = rh.transform.GetComponent<BoltEntity>();
            var hit = GameObject.Instantiate(impactPrefab, rh.point, Quaternion.LookRotation(rh.normal)) as GameObject;

            if (en)
            {
                hit.GetComponent<RandomSound>().enabled = false;
            }

            if (trailPrefab)
            {
                var trailGo = GameObject.Instantiate(trailPrefab, muzzleFlash.position, Quaternion.identity) as GameObject;
                var trail = trailGo.GetComponent<LineRenderer>();

                trail.SetPosition(0, muzzleFlash.position);
                trail.SetPosition(1, rh.point);
            }
        }

        GameObject go = (GameObject)GameObject.Instantiate(shellPrefab, shellEjector.position, shellEjector.rotation);
        go.GetComponent<Rigidbody>().AddRelativeForce(0, 0, 2, ForceMode.VelocityChange);
        go.GetComponent<Rigidbody>().AddTorque(new Vector3(Random.Range(-32f, +32f), Random.Range(-32f, +32f), Random.Range(-32f, +32f)), ForceMode.VelocityChange);

        // show flash
        muzzleFlash.gameObject.SetActive(true);
    }
}