using UnityEngine;
using System.Collections;

public class Controls : MonoBehaviour {

    public KeyCode moveLeft;
    public KeyCode moveRight;
    public KeyCode moveForward;
    public KeyCode moveBackward;

    //Speeds for different states
    public float walkingSpeed = 24;
    public float runningSpeed = 42;
    public float sprintSpeed = 55;

    //
    public float walkingSpeedSqr;
    public float runningSpeedSqr;
    public float sprintSpeedSqr;

    public int movementState = 0;  // 0 = not moving, 1 = walking, 2 = running, 3 = sprinting

    Vector3 acceleration = new Vector3 (1.0F*Time.deltaTime, 0, 0);

    // Use this for initialization
    void Start () {
        moveLeft = KeyCode.A;
        moveRight = KeyCode.D;
        moveForward = KeyCode.W;
        moveBackward = KeyCode.S;

        walkingSpeedSqr = walkingSpeed*walkingSpeed ;
        runningSpeedSqr = runningSpeed*runningSpeed;
        sprintSpeedSqr = sprintSpeed*sprintSpeed;

    }

    // Update is called once per frame
    void Update () {
        if(Input.GetKeyDown(moveLeft)) {

        }

    }

    // FixedUpdate is called once per physics step
    void FixedUpdate () {
        float maxSpeedSqr = movementState==1?walkingSpeedSqr:
                      movementState==2?runningSpeedSqr:
                      movementState==3?sprintSpeedSqr:0;

        //Makes sure player is moving
        if (movementState>0) {
            if (rigidbody.velocity.sqrMagnitude>maxSpeedSqr) {
                rigidbody.AddForce(acceleration);
            }
        }

    }

}