Unity里把这个段代码改为鼠标左键点击： void Update() { // 判断是否点击屏幕 if (Input.touchCount > 0 && Input.GetTouch(0).phase == TouchPhase.Began) { // 从相机发射一条射线 Ray ray = Camera.main.ScreenPoint

To change the code to detect left mouse click instead of touch input, you can replace the condition in the if statement with Input.GetMouseButtonDown(0) which detects left mouse button clicks. The modified code would look like this:

void Update()
{
// 判断是否点击屏幕
if (Input.GetMouseButtonDown(0))
{
// 从相机发射一条射线
Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
// 其他代码逻辑
}
}