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

public class CameraController : MonoBehaviour
{
    public float mouseMoveSpeed;
    public float aroundSpeed;
    public float zoomSpeed;

    private Camera m_Camera;

    private void Awake()
    {
        m_Camera = GetComponent<Camera>();
    }

    private void Update()
    {
        if(Input.GetMouseButton(2))
        {
            float mouseX = Input.GetAxis("Mouse X");
            float mouseY = Input.GetAxis("Mouse Y");

            Vector3 position = transform.position;

            Vector3 forwardDir = Vector3.ProjectOnPlane(transform.forward, Vector3.up).normalized;

            position += forwardDir * Time.unscaledDeltaTime * mouseMoveSpeed * -mouseY;

            position += transform.right * Time.unscaledDeltaTime * mouseMoveSpeed * -mouseX;

            transform.position = position;
        }

        if(Input.GetMouseButton(1))
        {
            float mouseX = Input.GetAxis("Mouse X");
			float mouseY = Input.GetAxis("Mouse Y");

			float y = transform.position.y;

            Plane ground = new Plane(Vector3.up, Vector3.zero);
            Ray ray = new Ray(transform.position, transform.forward);
            float enter;
            if(ground.Raycast(ray, out enter))
            {
                Vector3 point = transform.position + transform.forward * enter;

                float angle = mouseX * Time.unscaledDeltaTime * aroundSpeed;
                transform.RotateAround(point, Vector3.up, angle);

				angle = -mouseY * Time.unscaledDeltaTime * aroundSpeed;
				transform.RotateAround(point, transform.right, angle);
			}
		}

        float scroll = Input.mouseScrollDelta.y;

        m_Camera.orthographicSize = m_Camera.orthographicSize + -scroll * zoomSpeed * Time.unscaledDeltaTime;
        m_Camera.orthographicSize = Mathf.Clamp(m_Camera.orthographicSize, 3, 15);

    }


}