/// <summary>
/// Проверка спутников на столкновения с землей и друг с другом
/// </summary>
/// <returns>true, если столкновений не будет, false в противном случае</returns>
private bool VerifyDistances()
{
if (_motionParams.Count == 0)
{
return(true);
}
#pragma warning disable 618
var earth = Resources.GetDrawable(Resource.Drawable.globe);
var satellite = Resources.GetDrawable(Resource.Drawable.action_satellite);
#pragma warning restore 618
var maxEarth = Math.Max(earth.IntrinsicWidth, earth.IntrinsicHeight);
var maxSatellite = Math.Max(satellite.IntrinsicWidth, satellite.IntrinsicHeight);
_motionParams.Sort(
(satellite1, satellite2) =>
Float.FloatToIntBits(satellite1.Distance) - Float.FloatToIntBits(satellite2.Distance));
var satObject = _motionParams[0];
var thresholdDistance = Math.Sqrt(2) / 2 * (maxEarth + maxSatellite);
if (satObject.Distance < thresholdDistance) // Спутник столкнется с землей
{
var errorMessage = String.Format(Resources.GetString(Resource.String.EarthCollideError),
thresholdDistance);
AlertDialogUtil.ShowSimpleDialog(this, errorMessage);
return(false);
}
for (var i = 1; i < _motionParams.Count; i++)
{
var currentSatellite = _motionParams[i];
var prevSatellite = _motionParams[i - 1];
var diffDistance = currentSatellite.Distance - prevSatellite.Distance;
if (diffDistance < MinimumDistanceBetween)
{
// Расстояние между спутниками меньше минимально допустимого
var errorMessage = String.Format(Resources.GetString(Resource.String.SatelliteCollideError),
currentSatellite.Distance, prevSatellite.Distance, MinimumDistanceBetween);
AlertDialogUtil.ShowSimpleDialog(this, errorMessage);
return(false);
}
}
return(true);
}
/// <summary>
/// Установка кнопки сохранения данных таблицы
/// </summary>
private void SetupSaveButton()
{
var saveButton = FindViewById <Button>(Resource.Id.SaveButtonId);
saveButton.Click += (sender, args) =>
{
if (_motionParams.Count > 0)
{
_motionParams.Clear();
}
// Сбор информации из текстовых полей ввода
for (var i = 0; i < _settingsTable.ChildCount; i++)
{
var tableRow = _settingsTable.GetChildAt(i) as TableRow;
if (tableRow == null)
{
continue;
}
long currentTime = -1;
float currentDistance = -1;
for (var j = 0; j < tableRow.ChildCount; j++)
{
var currentView = tableRow.GetChildAt(j);
if (!(currentView is EditText))
{
goto nextTableRow;
}
var editText = (EditText)currentView;
var editTextId = editText.Id;
var currentText = editText.Text.Trim();
if (currentText.Length == 0)
{
goto nextTableRow;
}
if (editTextId % 2 != 0)
{
if (!long.TryParse(currentText, out currentTime) || currentTime <= 0)
{
var errorMessage = Resources.GetString(Resource.String.NegativeTimeError);
AlertDialogUtil.ShowSimpleDialog(this, errorMessage);
editText.RequestFocus();
return;
}
}
else
{
if (!float.TryParse(currentText, out currentDistance) || !(currentDistance > 0))
{
var errorMessage = Resources.GetString(Resource.String.NegativeTimeError);
AlertDialogUtil.ShowSimpleDialog(this, errorMessage);
editText.RequestFocus();
return;
}
}
}
_motionParams.Add(new Satellite(currentTime, currentDistance));
nextTableRow:
;
}
if (VerifyDistances())
{
SaveSettings(SettingsFileName);
}
StartActivity(new Intent(this, typeof(StartScreenActivity)));
};
}