using UnityEngine;
using System.Collections;

public class PlayerControl : MonoBehaviour
{
	public CameraClass camera;
	public bool LEFT, RIGHT, UP, DOWN;
	
	private const float WALKSPEED = 5.0f;
    //private float DIAGWALKSPEED = Mathf.Sqrt(WALKSPEED); //unused
    private float speed;
	
	// Use this for initialization
	void Start ()
	{
	
	}
	
	// Update is called once per frame
	void Update ()
	{		
		updateKeys();
		
		int dir = -1; //initialize movement angle variable
	
		if(RIGHT && !LEFT)
		{
			dir = 6;
            speed = WALKSPEED;
		}	
		else if(LEFT && !RIGHT)
		{
			dir = 2;
            speed = WALKSPEED;
		}	
		if(UP && !DOWN)
		{
            speed = WALKSPEED;
			if(dir == 2)
            {
                dir += 1;
            }
			else if(dir == 6)
            {
                dir -= 1;
            }
			else
            {
                dir = 4;
            }
		}	
		else if(DOWN && !UP)
		{
            speed = WALKSPEED;
			if(dir == 2)
            {
                dir -= 1;
            }
			else if(dir == 6)
            {
                dir += 1;
            }
			else
            {
                dir = 0;
            }
		}	
		
		if(dir != -1)
		{
			float dir_angle = camera.getDirection(dir);
			Vector3 direction = new Vector3(Mathf.Sin(dir_angle), 0.0f, Mathf.Cos(dir_angle));
			transform.Translate(direction * Time.deltaTime * speed);
			camera.updateCamera(); //Ensures that the camera position doesn't lag behind the player
		}
        else
        {
            speed = 0;
        }
	}

	void updateKeys()
	{
		LEFT = Input.GetKey("left");
		RIGHT = Input.GetKey("right");
		UP = Input.GetKey("up");
		DOWN = Input.GetKey("down");
	}

    public float getSpeed()
    {
        return speed;
    }
}