Assets/Scripts/RoomBuilding/MapViewController.cs - master - GeekNerd/ServerModelingProject

Assets/Scripts/RoomBuilding/MapViewController.cs
95 строк3 KB
Gorney-Alex
Init
30 май 2026, 19:05
30 май 2026, 19:053cdcc49
using UnityEngine;
using UnityEngine.EventSystems;
using Zenject;

namespace RoomBuilding
{
    public class MapViewController : MonoBehaviour,
        IPointerDownHandler,
        IPointerUpHandler,
        IBeginDragHandler,
        IDragHandler,
        IEndDragHandler,
        IScrollHandler
    {
        private RectTransform _mapContent;
 
        private float minScale  = 0.3f;
        private float maxScale  = 3.0f;
        private float zoomSpeed = 0.1f;
 
        private Vector2 _lastPointerPosition;
        private bool _isDragging;
        private int _dragButton = 1;

        [Inject]
        public void Construct(MapContentView mapContentView)
        {
            _mapContent = mapContentView.transform as RectTransform;
        }
 
        public void OnPointerDown(PointerEventData eventData)
        {
            if ((int)eventData.button == _dragButton)
            {
                _isDragging = true;
                _lastPointerPosition = eventData.position;
            }
        }

        public void OnBeginDrag(PointerEventData eventData)
        {
            if ((int)eventData.button != _dragButton)
            {
                return;
            }

            _isDragging = true;
            _lastPointerPosition = eventData.position;
        }
 
        public void OnDrag(PointerEventData eventData)
        {
            if (!_isDragging || _mapContent == null) return;
 
            var delta = eventData.position - _lastPointerPosition;
            _lastPointerPosition = eventData.position;
 
            _mapContent.anchoredPosition += delta;
        }
 
        public void OnPointerUp(PointerEventData eventData)
        {
            if ((int)eventData.button == _dragButton)
            {
                _isDragging = false;
            }
        }

        public void OnEndDrag(PointerEventData eventData)
        {
            _isDragging = false;
        }
 
        public void OnScroll(PointerEventData eventData)
        {
            if (_mapContent == null)
            {
                return;
            }

            float scroll = eventData.scrollDelta.y;
            if (Mathf.Approximately(scroll, 0f)) return;
 
            float currentScale = _mapContent.localScale.x;
            float newScale = Mathf.Clamp(currentScale + scroll * zoomSpeed, minScale, maxScale);
            
            RectTransformUtility.ScreenPointToLocalPointInRectangle(
                _mapContent, eventData.position, eventData.pressEventCamera, out var localPoint);
 
            var scaleFactor = newScale / currentScale;
            _mapContent.localScale    = Vector3.one * newScale;
            _mapContent.anchoredPosition -= localPoint * (scaleFactor - 1f);
        }
    }
}