script.cs

using UnityEngine;
using System.Collections;

public class PlayerController : MonoBehaviour {

	Rigidbody2D rbody;
	Animator anim;

	public float maxSpeed = 10;
	public float walkSpeed = 2;
	private float curSpeed;

	void Start () {
	
		rbody = GetComponent<Rigidbody2D> ();
		anim = GetComponent<Animator> ();
//		var runSpeed = walkSpeed * 2;

	}
	
	void FixedUpdate () {

		//Håndterer input
		var input_x = Input.GetAxisRaw ("Horizontal");
		var input_y = Input.GetAxisRaw ("Vertical");

		Vector2 movement_vector	= new Vector2 (input_x, input_y);

		//Giver animator informationer om bevægelse
		if (movement_vector != Vector2.zero) {
			anim.SetBool ("is_walking", true);
			anim.SetFloat ("input_x", movement_vector.x);
			anim.SetFloat ("input_y", movement_vector.y);
		} else {
			anim.SetBool ("is_walking", false);
		}


		curSpeed = walkSpeed;

		//Håndterer bevægelse
		rbody.velocity = new Vector2 (Mathf.Lerp (0, input_x * curSpeed, 0.8f), Mathf.Lerp (0, input_y * curSpeed, 0.8f));
	}
}