42 lines
1 KiB
C#
42 lines
1 KiB
C#
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using UnityEngine;
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using UnityEngine.EventSystems;
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public class DragAndDrop : MonoBehaviour, IBeginDragHandler, IDragHandler, IEndDragHandler
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{
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public static GameObject DraggedInstance;
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Vector3 _startPosition;
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Vector3 _offsetToMouse;
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float _zDistanceToCamera;
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#region Interface Implementations
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public void OnBeginDrag (PointerEventData eventData)
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{
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DraggedInstance = gameObject;
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_startPosition = transform.position;
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_zDistanceToCamera = Mathf.Abs (_startPosition.z - Camera.main.transform.position.z);
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_offsetToMouse = _startPosition - Camera.main.ScreenToWorldPoint (
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new Vector3 (Input.mousePosition.x, Input.mousePosition.y, _zDistanceToCamera)
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);
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}
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public void OnDrag (PointerEventData eventData)
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{
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if(Input.touchCount > 1)
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return;
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transform.position = Camera.main.ScreenToWorldPoint (
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new Vector3 (Input.mousePosition.x, Input.mousePosition.y, _zDistanceToCamera)
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) + _offsetToMouse;
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}
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public void OnEndDrag (PointerEventData eventData)
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{
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DraggedInstance = null;
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_offsetToMouse = Vector3.zero;
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}
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#endregion
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}
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