using UnityEngine;

namespace SampleScene.Scripts {
    public class CameraZoomController : MonoBehaviour {
        public KeyCode zoomIn;
        public KeyCode zoomOut;
        public Vector3 zoomController;
        public int zoomLevel = 1;
        public int zoomLimit = 5;
        public Transform displayCamera;

        void Update() {
            // zoom into the screen by changing camera position
            if (Input.GetKeyDown(zoomIn) && zoomLevel <= zoomLimit) {
                ZoomCameraIn();
            }

            // zoom out of screen by moving camera out
            if (Input.GetKeyDown(zoomOut) && zoomLevel >= 1) {
                ZoomCameraOut();
            }
        
            void ZoomCameraOut() {
                displayCamera.position -= zoomController;
                zoomLevel -= 1;
            }

            void ZoomCameraIn() {
                zoomLevel += 1;
                displayCamera.position += zoomController;
            }
        }
    }
}