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

public class RuchYacht : MonoBehaviour {

    //zmienne wyswietlane
    public float maxSpeed;
    public float speed = 0;
    public float UstawieniePletwy;
    public float predObrot;

    //Nomoto
    float wychylenie_pletwy;
    float pletwa_sigmaR = 0;
    float T = 50.66F;
    float K = 0.007F;
    float sigmaC = -0.0159F;
    float rot = 0;
    float cog;

    //zmienne pozycji poczatkowej
    float z;
    float x;

    public Slider SliderPredkosc;
    public Slider SliderPletwy;
    public Button btnZerujPred;

    // Use this for initialization
    void Start()
    {
        x = transform.position.x;
        z = transform.position.z;
        cog = transform.eulerAngles.y;
    }

    // Update is called once per frame
    void FixedUpdate ()
    {
        maxSpeed = SliderPredkosc.value;
        UstawieniePletwy = SliderPletwy.value;
        // PREDKOSC
        btnZerujPred.onClick.AddListener(TaskOnClick);

        pletwa_sigmaR = Mathf.MoveTowards(pletwa_sigmaR, SliderPletwy.value, 0.5F * Time.deltaTime * 5);
        speed = Mathf.MoveTowards(speed, SliderPredkosc.value, 1.0F * Time.deltaTime * 5);

        rot += K * (sigmaC + pletwa_sigmaR) - rot * Time.deltaTime / T;
        cog += rot * Time.deltaTime;

        x += speed * Time.deltaTime * cos(cog);
        z += speed * Time.deltaTime * sin(cog);
        predObrot = cog;

        transform.position = new Vector3(x, transform.position.y, z);
        transform.rotation = Quaternion.Euler(0, cog, 0);
    }

    private float sin (float alfa) { return Mathf.Sin(alfa * Mathf.PI / 180); }
    private float cos (float alfa) { return Mathf.Cos(alfa * Mathf.PI / 180); }

    void TaskOnClick() //polecenie zerowania predkosci
    {
        SliderPredkosc.value = 0;
    }
}