71 lines
2.0 KiB
C#
71 lines
2.0 KiB
C#
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using UnityEngine;
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using UnityEngine.EventSystems;
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public class UIDragToScene3D : MonoBehaviour, IBeginDragHandler, IDragHandler, IEndDragHandler
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{
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public GameObject buildingPrefab; // <20><>Ӧ<EFBFBD>Ľ<EFBFBD><C4BD><EFBFBD>Ԥ<EFBFBD>Ƽ<EFBFBD>
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private GameObject previewObject; // <20>϶<EFBFBD>ʱ<EFBFBD><CAB1>ʾ<EFBFBD>Ľ<EFBFBD><C4BD><EFBFBD><EFBFBD>ʵ<EFA3A8>ʵ<EFBFBD> 3D ģ<>ͣ<EFBFBD>
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/// <summary>
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/// <20><>ʼ<EFBFBD>϶<EFBFBD>ʱ
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/// </summary>
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/// <param name="eventData"></param>
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public void OnBeginDrag(PointerEventData eventData)
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{
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Debug.Log("Drag Started");
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// <20><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB> 3D <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD>϶<EFBFBD><CFB6>е<EFBFBD>Ԥ<EFBFBD><D4A4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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if (buildingPrefab != null)
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{
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previewObject = Instantiate(buildingPrefab);
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previewObject.GetComponent<Collider>().enabled = false; // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ײ<EFBFBD>壬<EFBFBD><E5A3AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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}
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}
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// <20>϶<EFBFBD><CFB6><EFBFBD>
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public void OnDrag(PointerEventData eventData)
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{
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if (previewObject != null)
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{
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// <20><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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Vector3 mouseWorldPosition = GetMouseWorldPosition();
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previewObject.transform.position = mouseWorldPosition; // <20><><EFBFBD><EFBFBD>Ԥ<EFBFBD><D4A4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><CEBB>
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}
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}
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/// <summary>
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/// <20>϶<EFBFBD><CFB6><EFBFBD><EFBFBD><EFBFBD>ʱ
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/// </summary>
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/// <param name="eventData"></param>
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public void OnEndDrag(PointerEventData eventData)
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{
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Debug.Log("Drag Ended");
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if (previewObject != null)
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{
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// <20><><EFBFBD>϶<EFBFBD><CFB6><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1>Ԥ<EFBFBD><D4A4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>תΪʵ<CEAA>ʵĽ<CAB5><C4BD><EFBFBD><EFBFBD><EFBFBD>
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previewObject.GetComponent<Collider>().enabled = true; // <20>ָ<EFBFBD><D6B8><EFBFBD>ײ<EFBFBD><D7B2>
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previewObject = null; // <20><><EFBFBD><EFBFBD>Ԥ<EFBFBD><D4A4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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}
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}
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/// <summary>
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/// <20><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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/// </summary>
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/// <returns></returns>
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private Vector3 GetMouseWorldPosition()
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{
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Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
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if (Physics.Raycast(ray, out RaycastHit hit, Mathf.Infinity))
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{
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// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>е<EFBFBD><D0B5>棬<EFBFBD><E6A3AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>еĵ<D0B5>
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return hit.point;
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}
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else
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{
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// <20><><EFBFBD><EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD><EFBFBD>е<EFBFBD><D0B5>棬<EFBFBD><E6A3AC><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>Ĭ<EFBFBD>ϵ<EFBFBD>
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return ray.GetPoint(10); // Ĭ<>Ͼ<EFBFBD><CFBE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 10 <20><><EFBFBD><EFBFBD>λ
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}
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}
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}
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