可以使用“TriggerHapticPulse” API调整手把的反馈：
// ========================== code snippet ==========================
var deviceIndex = SteamVR_Controller.GetDeviceIndex(SteamVR_Controller.Leftmost);
if (SteamVR_Controller.Input(deviceIndex).GetPressDown(
SteamVR_Controller.ButtonMask.Trigger))
{
SteamVR_Controller.Input(deviceIndex).TriggerHapticPulse(100);
}
