using UnityEngine;
using System.Collections;

public class Water : MonoBehaviour {

    public GameObject ocean;
    bool tideRising;
    Vector3 tideHighest;
    Vector3 tideLowest;
    float dayDuration;
    float outWave;
    float inWave;
    float amountRequired;

    private float startTime;
    private float journeyLength;

    // Use this for initialization
    void Start () {
        ocean = this.gameObject;
        tideHighest = ocean.transform.position;
        tideLowest = new Vector3(tideHighest.x, tideHighest.y - 1, tideHighest.z);
        dayDuration = 120f;
        outWave = 2f;
        inWave = 1.5f;
        amountRequired = Mathf.Floor ((dayDuration / 2) / (outWave + inWave));
        tideRising = false;

        startTime = Time.time;
        journeyLength = Vector3.Distance(ocean.transform.position, tideLowest);
    }



    void tideGoesOut() {
        float distCovered = (Time.time - startTime) * outWave;
        float fracJourney = distCovered / journeyLength;
        ocean.transform.position = Vector3.Lerp (ocean.transform.position, tideLowest, fracJourney);
        if(ocean.transform.position.y <= tideLowest.y){
            tideRising = true;
            startTime = Time.time;
            journeyLength = Vector3.Distance(ocean.transform.position, tideHighest);
            //ocean.transform.position = tideLowest;
        }
    }

    void tideComesIn() {
        float distCovered = (Time.time - startTime) * inWave;
        float fracJourney = distCovered / journeyLength;
        ocean.transform.position = Vector3.Lerp (ocean.transform.position, tideHighest, fracJourney);
        if (ocean.transform.position.y >= tideHighest.y) {
            tideRising = false;
            startTime = Time.time;
            journeyLength = Vector3.Distance(ocean.transform.position, tideLowest);
            //ocean.transform.position = tideHighest;
        }
    }

    // Update is called once per frame
    void Update () {
            if (tideRising){
                tideComesIn();
            } else {
                tideGoesOut();
            }

        Debug.Log ("Highest: " + tideHighest);
        Debug.Log ("Lowest: " + tideLowest);
        Debug.Log ("Current Position: " + ocean.transform.position);
        Debug.Log (tideRising);
    }
}