【Unity鼠标从屏幕空间（坐标）转换为世界空间（坐标）】

Unity鼠标从屏幕空间（坐标）转换为世界空间（坐标）

Vector3 screenPos = Camera.main.WorldToScreenPoint(transform.position);

Vector3 mousePosOnScreen = Input.mousePosition;

mousePosOnScreen.z = screenPos.z;

Vector3 mousePosInWorld = Camera.main.ScreenToWorldPoint(mousePosOnScreen);

transform.position = mousePosInWorld;