在鼠标点击的位置上出现特效（气泡）

if (Input.GetMouseButtonDown(0))

{

// 泡泡预设出来的原始位置

Vector3 bubblePos = new Vector3(8.95f, 1.04f, -0.76f);

GameObject bubble = Instantiate(clickBubble, bubblePos, Quaternion.identity) as GameObject;

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

Vector3 curScreenPos = new Vector3(Input.mousePosition.x, Input.mousePosition.y, screenPos.z);

Vector3 curPos = Camera.main.ScreenToWorldPoint(curScreenPos);

// print(CurPosition);

bubble.transform.position = curPos;

Destroy(bubble, 2f);

}