internal void Update()
{
var aWorld = this.World;
var aNearest = aWorld.FrameInfo.NearestBumperIsDefined
? new CNearestObject(aWorld.FrameInfo.NearestAsteroid.DistanceToAvatar, aWorld.FrameInfo.NearestAsteroid.ObjectId, aWorld.GameTimeTotal)
: default(CNearestObject)
;
if (aNearest is object)
{
this.Sample(aNearest);
}
else
{
this.ResetSamples();
}
var aQueuedHitpointNullable = this.QueuedHitpointNullable;
if (aQueuedHitpointNullable is object)
{
var aStopped = this.PlayingHitpointNullable is object &&
!this.PlayingHitpointNullable.Item2.SoundBuffer.IsPlaying
;
if (aStopped)
{
this.PlayingHitpointNullable = default;
}
var aYetPlaying = this.PlayingHitpointNullable is object &&
this.PlayingHitpointNullable.Item2.RefEquals <CSoundFile>(aQueuedHitpointNullable.Item2);
if (!aYetPlaying)
{
aQueuedHitpointNullable.Item2.SoundBuffer.Play();
this.PlayingHitpointNullable = aQueuedHitpointNullable;
this.QueuedHitpointNullable = default;
}
}
}
private void RunBackgroundTask()
{
var aHitpoints = this.HitPoints;
var aRandom = new Random((int)DateTime.Now.Ticks);
var aIgnoreCollisionTendencyThisTime = new Func <int, bool>(idx =>
{
var aCount2 = aHitpoints.Last().Item1.TotalMilliseconds
/ this.SampleIntervall.TotalMilliseconds;
var aCount = (double)aHitpoints.Length;
var aRnd = aRandom.NextDouble();
var cmp = ((double)idx * (this.SampleIntervall.TotalMilliseconds / aHitpoints.Last().Item1.TotalMilliseconds));
var aIgnore = aRnd > cmp * 0.07d;
return(aIgnore);
});
var aSamplePoints = new List <CNearestObject>(this.SampleCountMax);
var aQueuedHitpoint = default(CQueuedHitpoint);
var aPlayingHitpoint = default(CQueuedHitpoint);
while (!this.BackgroundTaskCancelRequested)
{
if (aHitpoints.Length > 0)
{
aSamplePoints.Clear();
lock (this.SamplePoints)
{
aSamplePoints.AddRange(this.SamplePoints);
}
if (aSamplePoints.Count == SampleCountMax)
{
var aSamplePoints2 = (from aSamplePoint in aSamplePoints
where aSamplePoint.Item2.IsEqual(aSamplePoints.Last().Item2)
select aSamplePoint).ToArray(); // aSamplePoints.GroupBy(aSamplePoint => aSamplePoint.Item2).ToArray();
if (aSamplePoints2.Length > 0)
{
double aCurrentDistance = 0d;
bool aGettingNearer = true;
for (var i = 1; i < aSamplePoints2.Length && aGettingNearer; ++i)
{
var aPrevious = aSamplePoints2[i - 1].Item1;
var aCurrent = aSamplePoints2[i].Item1;
aCurrentDistance = aPrevious - aCurrent;
if (aCurrentDistance < 0.0)
{
aGettingNearer = false;
}
}
if (aGettingNearer)
{
var aFirst = aSamplePoints.First();
var aLast = aSamplePoints.Last();
var aFirstDist = aFirst.Item1;
var aLastDist = aLast.Item1;
var aLastTimeMs = aLast.Item3.TotalMilliseconds;
var aFirstTimeMs = aFirst.Item3.TotalMilliseconds;
var aDeltaTime = aLastTimeMs - aFirstTimeMs; // aLast.Item3.Subtract(aFirst.Item3);
var aDeltaDistance = aFirstDist - aLastDist;
if (aDeltaDistance > 0)
{
var aSpeed = aDeltaDistance / aDeltaTime;
var aDistanceToGo = aLastDist;
var aTimeUntilCollision = aSpeed == 0d
? double.NaN
: aDistanceToGo / aSpeed;
if (double.IsNaN(aTimeUntilCollision))
{
this.QueuedHitpointNullable = default;
}
else if (aTimeUntilCollision > 0)
{
bool aIgnored = false;
bool aHitpointQueued = false;
for (var i = 0; i < aHitpoints.Length && !aHitpointQueued && !aIgnored; ++i)
{
var aHitpoint = aHitpoints[i];
if (aHitpoint.Item1.TotalMilliseconds > aTimeUntilCollision)
{
if (aIgnoreCollisionTendencyThisTime(i))
{
aIgnored = true;
}
else
{
var i2 = i > 0 ? i - 1 : i;
var aPreviousTime = aHitpoints[i2];
var aTimeToStartHitpoint = aTimeUntilCollision - aHitpoint.Item1.TotalMilliseconds;
aQueuedHitpoint = new CQueuedHitpoint(aHitpoint.Item1, aHitpoint.Item2, TimeSpan.FromMilliseconds(aTimeToStartHitpoint));
this.QueuedHitpointNullable = aQueuedHitpoint;
aPlayingHitpoint = aQueuedHitpoint;
aHitpointQueued = true;
}
}
}
}
}
}
}
}
}
System.Threading.Thread.Sleep((int)this.SampleIntervall.TotalMilliseconds);
}
}
