AR開發(fā)對編程感興趣但又沒有美工基礎(chǔ)的玩家非常適合。記錄一下AR動態(tài)照片墻（含點(diǎn)擊播放對應(yīng)視頻）的代碼：

一、動態(tài)照片墻，實(shí)現(xiàn)照片位置設(shè)計及相關(guān)關(guān)鍵數(shù)據(jù)。

using System.Collections;

using System.Collections.Generic;

using UnityEngine;

using DG.Tweening;

public class PhotoWallController : MonoBehaviour

{

??public static PhotoWallController _instance;

??//private VideoClip[] danceMov;

???

??public float photoSpace = 5.0f;

??private RectTransform[] photoRects;

??public RectTransform zeroPosition;

??public float maxWidthValue = 1920;

??//字典

??private Dictionary<RectTransform, Vector2> photoDic = new Dictionary<RectTransform, Vector2>();

??public float doEndPosTime = 1.0f;

??public float doAvoidViewPhotoTime = 0.5f;

??[Header("CurrentViewPhoto")]

??public RectTransform currentViewPhoto;

??public Vector3 originalScale = new Vector3(1, 1, 1);

??public Vector3 maxScale = new Vector3(3, 3, 3);

??private Vector2 originalPos;

??//照片排擠功能

??public float minDistance = 200;

??// Start is called before the first frame update

??void Start()

??{

????originalPos = currentViewPhoto.anchoredPosition;

??}

??private void Awake()

??{

????_instance = this;

??}

??// Update is called once per frame

??void Update()

??{

????//回歸原位置

????OpenDoEndPos();

????//排斥

????foreach (var photo in photoDic)

????{

??????float dis = Vector2.Distance(photo.Key.anchoredPosition, currentViewPhoto.anchoredPosition);

??????if (dis < minDistance)

??????{

????????Vector2 targetPos = currentViewPhoto.anchoredPosition+(photo.Key.anchoredPosition-currentViewPhoto.anchoredPosition).normalized*minDistance;

????????photo.Key.DOAnchorPos(targetPos, doAvoidViewPhotoTime);

??????}

????}

??}

??public void InitializationPhotos()

??{

????if (zeroPosition == null) return;

????//1.獲取所有照片的RectTransform和video clip

????var objs = GameObject.FindGameObjectsWithTag("myPhoto");

????photoRects = new RectTransform[objs.Length];

????for (int i = 0; i < objs.Length; i++)

????{

??????photoRects[i] = objs[i].GetComponent<RectTransform>();

??????//danceMov[i] = objs[i].GetComponent<VideoPlayer>().clip;

????}

????//2.計算并設(shè)置照片的排列位置

????Vector2 photoZero = zeroPosition.anchoredPosition;

????float currentWidthSum = 0;

????for(int i = 0; i < photoRects.Length; i++)

????{

??????Vector2 photoEndPos = photoZero + new Vector2(photoRects[i].rect.width / 2 + photoSpace, photoRects[i].rect.height / 2 + photoSpace);

??????photoZero += new Vector2(photoRects[i].rect.width + photoSpace, 0);

??????currentWidthSum += photoRects[i].rect.width + photoSpace;

??????if (currentWidthSum >= maxWidthValue)

??????{

????????photoZero = new Vector2(zeroPosition.anchoredPosition.x, photoZero.y+photoRects[i].rect.height + photoSpace);

????????currentWidthSum = 0;

??????}

??????photoDic.Add(photoRects[i], photoEndPos);

????}

????//做一個緩動

????Invoke("OpenDoEndPos", 1); //延遲1秒調(diào)用方法

???}

??void OpenDoEndPos()

??{

????foreach(var dic in photoDic)

????{

??????dic.Key.DOAnchorPos(dic.Value,doEndPosTime);

????}

??}

??public void CloseCurrentViewPhoto()

??{

????currentViewPhoto.anchoredPosition = originalPos;

??}

?????

}

二、當(dāng)前照片放大顯示（選中點(diǎn)擊后放大，若照片墻對象下掛了視頻，則播放視頻）

using System.Collections;

using System.Collections.Generic;

using UnityEngine;

using UnityEngine.EventSystems;

using DG.Tweening;

using UnityEngine.UI;

using UnityEngine.Video;

public class PhotoEventController : MonoBehaviour,IPointerDownHandler

{

???

??public void OnPointerDown(PointerEventData eventData)

??{

????RectTransform _currentViewPhoto = PhotoWallController._instance.currentViewPhoto;

????if (_currentViewPhoto == null) return;

????_currentViewPhoto.DOKill(); //殺死當(dāng)前RectTransform的所有DOTween動畫

????_currentViewPhoto.GetChild(0).GetComponent<VideoPlayer>().targetTexture.Release();//(fsx）釋放已播放的視頻

????_currentViewPhoto.anchoredPosition = this.GetComponent<RectTransform>().anchoredPosition;

????_currentViewPhoto.localScale = PhotoWallController._instance.originalScale;

????if (this.GetComponent<VideoPlayer>() == null)

????{

??????//如果照片墻對象沒有掛載視頻組件，則關(guān)閉當(dāng)前顯示照片框下的RawImage視頻播放對象

??????_currentViewPhoto.GetChild(0).gameObject.SetActive(false);

??????_currentViewPhoto.GetComponent<Image>().sprite = this.GetComponent<Image>().sprite;

????}

????else

????{

??????//如果照片墻對象掛載了視頻組件，則開啟當(dāng)前顯示照片框下的RawImage視頻播放對象，并加載對應(yīng)視頻

??????_currentViewPhoto.GetChild(0).gameObject.SetActive(true);

??????_currentViewPhoto.GetChild(0).GetComponent<VideoPlayer>().clip = this.GetComponent<VideoPlayer>().clip;

??????_currentViewPhoto.GetChild(0).GetComponent<VideoPlayer>().Play();

????}

?????

????_currentViewPhoto.DOScale(PhotoWallController._instance.maxScale, 1);

??}

??// Start is called before the first frame update

??void Start()

??{

?????

??}

??// Update is called once per frame

??void Update()

??{

?????

??}

}

三、上一期視頻遇到的如何讓UI顯示在玩家視野前方的問題，用如下代碼解決了

using System.Collections;

using System.Collections.Generic;

using UnityEngine;

using UnityEngine.XR;

public class MenusController : MonoBehaviour

{

??public float x;

??public float y;

??public float z;

??bool buttonYPressed = false;

?

??// Start is called before the first frame update

??void Start()

??{

??}

??// Update is called once per frame

??void Update()

??{

????InputDevices.GetDeviceAtXRNode(XRNode.LeftHand).TryGetFeatureValue(CommonUsages.secondaryButton,out buttonYPressed);

????if (buttonYPressed)

????{

??????//GameObject[] myUIObjs = GameObject.FindGameObjectsWithTag("myUI");

??????//for (int i = 0; i <= myUIObjs.Length; i++)

??????//{

??????//??myUIObjs[i].SetActive(true);

??????//}

??????transform.rotation = Camera.main.transform.rotation;

??????transform.TransformDirection(Camera.main.transform.forward);

??????transform.position = Camera.main.transform.position;

??????transform.Translate(new Vector3(x, y, z));

??????Transform child = this.transform.Find("mainMenu");

??????if (!child.gameObject.activeSelf)

??????{

????????child.gameObject.SetActive(true);

??????}

????}

?????

??}

}