【发布时间】：2022-01-15 23:06:33
【问题描述】：
当我将游戏对象拖到屏幕边框之外时，它会回到场景中心，但在游戏对象的中间越过边缘进入屏幕后它会立即停止移动。
此屏幕截图显示游戏对象在向场景中心移动时立即停止。
我的错误在哪里？如何让卡片完全移动到场景中心？
[SerializeField] private Canvas canvas;
Vector3 offset = Vector3.zero;
[SerializeField] private GameObject cardChoice;
private CanvasGroup cardChoiceCG;
private int resolutionX = Screen.width;
private int resolutionY = Screen.height;
[SerializeField] private float distanceToFadeIn;
[SerializeField] private float smoothTime = 0.25f;
private Vector3 velocity = Vector3.zero;
private void Start() {
cardChoiceCG = cardChoice.GetComponent<CanvasGroup>();
}
private void Update() {
Vector3 screenPosition = canvas.worldCamera.WorldToScreenPoint(this.transform.position);
if (screenPosition.x > resolutionX || screenPosition.x < 0f ||
screenPosition.y > resolutionY || screenPosition.y < 0f) {
transform.position = Vector3.SmoothDamp(transform.position, canvas.transform.TransformPoint(Vector3.zero), ref velocity, smoothTime);
}
cardChoiceCG.alpha = Math.Abs((1f / distanceToFadeIn) * (screenPosition.x - (resolutionX / 2)));
}
public void OnPointerDown(PointerEventData eventData) {
RectTransformUtility.ScreenPointToLocalPointInRectangle(canvas.transform as RectTransform, eventData.position, canvas.worldCamera, out Vector2 pos);
offset = transform.position - canvas.transform.TransformPoint(pos);
}
public void OnDrag(PointerEventData eventData) {
RectTransformUtility.ScreenPointToLocalPointInRectangle(canvas.transform as RectTransform, eventData.position, canvas.worldCamera, out Vector2 movePos);
transform.position = canvas.transform.TransformPoint(movePos) + offset;
}
}
【问题讨论】：
-
你可以在画布中添加一个空的游戏对象并将其用作 SmoothDump 函数中的目标，也许问题是画布本身。