/*     INFINITY CODE 2013-2016      */
/*   http://www.infinity-code.com   */

using UnityEngine;

namespace InfinityCode.OnlineMapsExamples
{
    /// <summary>
    /// Example how to change the position of the map using the joystick.
    /// </summary>
    [AddComponentMenu("Infinity Code/Online Maps/Examples (API Usage)/ChangePositionUsingJoystick")]
    public class ChangePositionUsingJoystick : MonoBehaviour
    {
        /// <summary>
        /// Speed of moving the map.
        /// </summary>
        public float speed = 1;

        private OnlineMaps map;

        private void Start()
        {
            map = OnlineMaps.instance;
        }

        private void Update()
        {
            // Gets axis
            float latitudeSpeed = Input.GetAxis("Vertical") * Time.deltaTime;
            float longitudeSpeed = Input.GetAxis("Horizontal") * Time.deltaTime;

            if (latitudeSpeed == 0 && longitudeSpeed == 0) return;

            // Gets map position
            double lng, lat;
            map.GetPosition(out lng, out lat);

            // Converts the geographic coordinates to the tile coordinates.
            double tx, ty;
            map.projection.CoordinatesToTile(lng, lat, map.zoom, out tx, out ty);

            // Move tile coordinates
            tx += longitudeSpeed * speed;
            ty -= latitudeSpeed * speed;

            double nLng, nLat;

            // Converts the tile coordinates to the geographic coordinates.
            map.projection.TileToCoordinates(tx, ty, map.zoom, out nLng, out nLat);

            if (longitudeSpeed != 0) lng = nLng;
            if (latitudeSpeed != 0) lat = nLat;

            // Set map position
            map.SetPosition(lng, lat);
        }
    }
}