using UnityEngine;

public class RotateCameraUsingOneFinger:MonoBehaviour
{
    public Vector2 cameraSpeed = Vector2.one;

    private OnlineMapsTileSetControl control;
    private Vector2 lastGestureCenter;
    private bool hasRotation = false;

    private void Start()
    {
        control = OnlineMapsTileSetControl.instance;
        control.allowUserControl = false;
        control.cameraSpeed = Vector2.zero;
    }

    private void Update()
    {
        if (control.GetTouchCount() != 1)
        {
            if (hasRotation)
            {
                hasRotation = false;
                lastGestureCenter = Vector2.zero;
            }
            return;
        }

        hasRotation = true;
        Vector2 center = control.GetInputPosition();
        if (lastGestureCenter == Vector2.zero) lastGestureCenter = center;
        else if (lastGestureCenter != center)
        {
            Vector2 offset = lastGestureCenter - center;
            control.cameraRotation.x -= offset.y / 10f * cameraSpeed.x;
            control.cameraRotation.y -= offset.x / 10f * cameraSpeed.y;
            lastGestureCenter = center;
        }
    }
}