// #########################################################################################
// This is a cut down version of the the Tank Movement script from the Tanks tutorial provided by Unity
// https://www.assetstore.unity3d.com/en/#!/content/46209
// #########################################################################################
using UnityEngine;

namespace PUNTutorial
{
    public class PlayerMovement : Photon.PunBehaviour
    {
        public float m_Speed = 12f;                 // How fast the tank moves forward and back.
        public float m_TurnSpeed = 180f;            // How fast the tank turns in degrees per second.
        private Rigidbody m_Rigidbody;              // Reference used to move the tank.
        private float m_MovementInputValue;         // The current value of the movement input.
        private float m_TurnInputValue;             // The current value of the turn input.


        private void Awake ()
        {
            m_Rigidbody = GetComponent<Rigidbody> ();

            if(!photonView.isMine)
            {
                enabled = false;
            }
        }


        private void OnEnable ()
        {
            // When the tank is turned on, make sure it\'s not kinematic.
            m_Rigidbody.isKinematic = false;

            // Also reset the input values.
            m_MovementInputValue = 0f;
            m_TurnInputValue = 0f;
        }


        private void OnDisable ()
        {
            // When the tank is turned off, set it to kinematic so it stops moving.
            m_Rigidbody.isKinematic = true;
        }

        private void Update ()
        {
            // Store the value of both input axes.
            m_MovementInputValue = Input.GetAxis ("Vertical");
            m_TurnInputValue = Input.GetAxis ("Horizontal");
        }

        private void FixedUpdate ()
        {
            // Adjust the rigidbodies position and orientation in FixedUpdate.
            Move ();
            Turn ();
            m_Rigidbody.velocity = Vector3.zero;
            m_Rigidbody.angularVelocity = Vector3.zero;
        }

        private void Move ()
        {
            // Create a vector in the direction the tank is facing with a magnitude based on
            // the input, speed and the time between frames.
            Vector3 movement = transform.forward * m_MovementInputValue * m_Speed * Time.deltaTime;

            // Apply this movement to the rigidbody\'s position.
            m_Rigidbody.MovePosition(m_Rigidbody.position + movement);
        }

        private void Turn ()
        {
            // Determine the number of degrees to be turned based on the input,
            // speed and time between frames.
            float turn = m_TurnInputValue * m_TurnSpeed * Time.deltaTime;

            // Make this into a rotation in the y axis.
            Quaternion turnRotation = Quaternion.Euler (0f, turn, 0f);

            // Apply this rotation to the rigidbody\'s rotation.
            m_Rigidbody.MoveRotation (m_Rigidbody.rotation * turnRotation);
        }
    }
}