async Task SequenceRunner(VibrationPattern pattern, CancellationToken token)
{
int sequence_index = 0;
while (!token.IsCancellationRequested)
{
//either loop the sequence or end.
if (sequence_index >= pattern.Time.Count)
{
if (!pattern.Loop)
{
break;
}
sequence_index = 0;
}
int time = (int)pattern.Time[sequence_index];
//1. build payload.
List <double> payload = new List <double>();
for (var i = 0; i < VibrationMotorCount; i++)
{
var motor_index = i;
//if there is only one motor entry, only use that.
if (pattern.Speeds.Count == 1)
{
motor_index = 0;
}
//if a motor entry/value was not supplied in the pattern, no big deal, assume zero.
var motor_entry = pattern.Speeds.ElementAtOrDefault(motor_index);
var motor_speed = motor_entry.ElementAtOrDefault(sequence_index);
payload.Add(Math.Clamp(motor_speed * 0.01f * _power_multiplier, 0f, 1f));
}
//2. send the payload
if (!_busy)
{
_ = SetBusy();
await _device.SendVibrateCmd(payload);
}
//3. sleep
await Task.Delay(time);
//4. rinse and repeat
sequence_index++;
}
}
/// <summary>
/// Plays a vibration sequence on the device.
/// </summary>
public bool SendVibrateSequence(VibrationPattern pattern)
{
if (pattern.MotorCount == 0)
{
return(false);
}
if (!pattern.Validate())
{
return(false);
}
if (_runner != null)
{
_runner.Cancel();
}
_runner = new CancellationTokenSource();
_ = SequenceRunner(pattern, _runner.Token);
return(true);
}