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

[RequireComponent(typeof(CharacterController))]
public class ThirdPersonController : MonoBehaviour
{

	CharacterController characterController;
	public float rotationSpeed = 60.0f;
	public float walkingSpeed = 8.0f;
	public float mouseSensitivity = 20;
	public float jumpSpeed = 8.0f;
	public float airSpeed = 5f;
	public float gravity = 9.81f;

	Vector3 velocity = Vector3.zero;

	void Start ()
	{
		characterController = this.GetComponent<CharacterController>();
	}


	void Update ()
	{
		float forward = Input.GetAxis("Vertical");
		float rotate = Input.GetAxis("Horizontal");
		float strafe = Input.GetAxis("Strafe");

		if (Input.GetMouseButton(1))
		{
			rotate = Input.GetAxis("Mouse X") * mouseSensitivity;
		}

		Vector3 airVelocity = Vector3.zero;

		if (characterController.isGrounded)
		{
			velocity = this.transform.right * walkingSpeed * strafe + this.transform.forward * walkingSpeed * forward;

			if (Input.GetButton("Jump"))
			{
				velocity.y = jumpSpeed;
			}
		}
		else
		{
			airVelocity = forward * airSpeed * this.transform.forward + strafe * airSpeed * this.transform.right;
		}

		velocity.y -= gravity * Time.deltaTime;

		characterController.Move((velocity + airVelocity) * Time.deltaTime);
		transform.Rotate(Vector3.up, rotate * Time.deltaTime);

		transform.Rotate(Vector3.up, rotate * rotationSpeed * Time.deltaTime);
		Vector3 direction = this.transform.right * strafe + this.transform.forward * forward;
		characterController.SimpleMove(direction * walkingSpeed);

	}
}