unity3d：物体点击与拖动互不影响

忘是亡心i 2022-05-08 23:56 217阅读 0赞

private bool bInTouch = false;
        private float ClickAfter = 0.0f;
        GameObject m_curClickBox;
        private Vector3 mousePosLast = Vector3.zero;
        private bool Dragged = false;
    
        private bool bTemporarySelect = false;

public void Update()
        {
            
            //有按钮一直按下，在PC端是鼠标左键一直按下。。移动端可代表一直在滑动
            if (Input.GetMouseButton(0))
            {
                //点击到UI上
                if (Application.isMobilePlatform && Input.touchCount > 0)
                {
                    if (EventSystem.current.IsPointerOverGameObject(Input.GetTouch(0).fingerId))
                        return;
                }
                else if (EventSystem.current.IsPointerOverGameObject())
                {
                    return;
                }
    
                //未点在UI上，
                //之前没按下
                if (bInTouch == false)
                {
    
                    bInTouch = true;//当前点击了一个建筑
                    ClickAfter = 0.0f;
                    mousePosLast = Input.mousePosition;
                    bTemporarySelect = false;
                    Dragged = false;
                }
                else //之前按下了
                {
                    //与上次点击距离超过阈值为滑动
                    if (Vector3.Distance(Input.mousePosition, mousePosLast) > 0.01f)
                    {
                        if (!Dragged)
                        {
                            Dragged = true;
                        }
                    }
                    else //按下，且一直长按超过阈值 为点击
                    {
                        if (!Dragged)
                        {
                            ClickAfter += Time.deltaTime;
                            if (!bTemporarySelect && (ClickAfter > 0.5f))
                            {
                                bTemporarySelect = true;
                                //Debug.Log ("Update2 buildingSelected:"+((buildingSelected != null) ? buildingSelected.name : "none"));
                                //按下到松手且不移动，判定为点击状态
                                PickOneBox();
                            }
                        }
                    }
                }
            }
            else //触摸抬起或者按下，实际处理抬起事件
            {
                if (bInTouch)
                {
                    bInTouch = false;
    
                    if (Dragged)
                    {
                        //在持续期间判断为拖动，执行拖动逻辑
                    }
                    else//执行点击
                    {
                        if (bTemporarySelect) //长按
                        {
                        }
                        else
                        {
                            PickOneBox();
                        }
                    }
                }
            }
        }

void PickOneBox()
        {
            Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
            RaycastHit hit;
            if (Physics.Raycast(ray, out hit))
            {
                if (hit.collider.gameObject.tag == "HtBox")
                {
                    hit.collider.gameObject.GetComponent<BoxCtrl>().OnPick();
                  
                }   
            }
        }

![请添加图片描述][135a96f88afb41e8b0c4d4d5fc61122f.gif]

[135a96f88afb41e8b0c4d4d5fc61122f.gif]: /images/20220509/1050cc64ac4046c2a945d6e5e8323e97.png