/*
* public TimeSpan RunFrequency => TimeSpan.FromMinutes(60);
*
* public void ProcessEntity(Entity entity, int deltaSeconds)
* {
* SetEntityProfile(entity);
* }
*
* public void ProcessManager(EntityManager manager, int deltaSeconds)
* {
* Stopwatch timer = new Stopwatch();
* timer.Start();
* var entites = manager.GetAllEntitiesWithDataBlob<SensorProfileDB>();
* foreach (var entity in entites)
* {
* ProcessEntity(entity, deltaSeconds);
* }
* var ms = timer.ElapsedMilliseconds;
* var numEntites = entites.Count;
* }
*/
internal static void SetEntityProfile(Entity entity, DateTime atDate)
{
var position = entity.GetDataBlob <PositionDB>();
var sensorSig = entity.GetDataBlob <SensorProfileDB>();
sensorSig.LastPositionOfReflectionSet = position.AbsolutePosition_AU;
sensorSig.LastDatetimeOfReflectionSet = atDate;
var emmiters = entity.Manager.GetAllEntitiesWithDataBlob <SensorProfileDB>();
int numberOfEmmitters = emmiters.Count;
sensorSig.ReflectedEMSpectra.Clear();
PercentValue reflectionPercent = 0.1f; //TODO: this should be calculated from crossSection(size), distance, and a reflectivity value(stealth armor?/ other design factors?).
foreach (var emittingEntity in emmiters)
{
if (emittingEntity != entity) // don't reflect our own emmision.
{
double distance = PositionDB.GetDistanceBetween(position, emittingEntity.GetDataBlob <PositionDB>());
var emmissionDB = emittingEntity.GetDataBlob <SensorProfileDB>();
foreach (var emitedItem in emmissionDB.EmittedEMSpectra)
{
var reflectedMagnatude = SensorProcessorTools.AttenuationCalc(emitedItem.Value, distance) * reflectionPercent;
sensorSig.ReflectedEMSpectra.Add(emitedItem.Key, emitedItem.Value);
}
}
}
}
/// <summary>
/// TODO: Refactor: each entity (or parent) should have thier own Random based off a seed.
/// all random should be psudo random and threadsafe. or at least, we need to be aware of higher level randoms which can be called by any thread. ie avoid this.
/// some random should be able to be figured out by remote clients, and some not.
/// </summary>
/// <returns>The sigmoid.</returns>
/// <param name="acurateNumber">Acurate number.</param>
/// <param name="acuracy">Acuracy.</param>
public static double RndSigmoid(double acurateNumber, PercentValue acuracy, Random rng)
{
double sigmoid = Math.Tanh(acuracy * 10);
double maxRand = Rnd(1, sigmoid, rng);
double result = Rnd(acurateNumber + (acurateNumber * maxRand), acurateNumber - (acurateNumber * maxRand), rng);
return(result);
}
internal static SensorReturnValues DetectonQuality(SensorReceverAtbDB recever, SensorProfileDB target)
{
/*
* Thoughts (spitballing):
*
* What we need:
* detect enough of a signal to get a position
* decide what "enough" is. probibly get this from the signal strength. - should the target SensorSigDB define what enough is?
* we could require more than one detection (ie two ships in different locations) to get an acurate position, but that could get tricky to code.
* and how would we display a non acurate position? maybe a line out to a question mark, showing the angle of detection but not range?
*
* detect enough of a signal to get intel if it's a ship
* decide what "enough" for this is. maybe compare the detected waveform and the emited waveform and compare the angles to see if the triangle is simular.
*
* it'd be nifty if we could include background noise in there too, ie so ships close to a sun would be hidden.
* also have resoulution be required to pick out multiple ships close together instead of just one big signal.
*
* With range attenuation, we'll never get the full signal uneless we're right ontop of it.
* maybe if we get half the emited strength and its a simular triange (all same angles) we get "Full" intel?
*
* should we add time into the mix as well? multiple detections over a given time period to get position/velocity/orbitDB?
*
*
* how are multiple components on a ship going to work? they are entitys in and of themselfs, so they could have a SensorSigDB all of thier own.
* that could help with getting intel on individual components of a target.
*
* recever resolution should play into how much gets detected.
*
* Note that each entity will(may) have multiple waveforms.
*
* Data that can be glened from this detection system:
* detectedStrength (altitide of the intersecting triangle)
* detectedArea - the area of the detected intersection, could compare this to the target signal as well.
* compare angles of the detected intersection and the target signal to see if the shape is simular?
* if range is known acurately, this could affect the intel gathered.
*/
var myPosition = recever.OwningEntity.GetDataBlob <ComponentInstanceInfoDB>().ParentEntity.GetDataBlob <PositionDB>();//recever is a componentDB. not a shipDB
PositionDB targetPosition;
if (target.OwningEntity.HasDataBlob <PositionDB>())
{
targetPosition = target.OwningEntity.GetDataBlob <PositionDB>();
}
else
{
targetPosition = target.OwningEntity.GetDataBlob <ComponentInstanceInfoDB>().ParentEntity.GetDataBlob <PositionDB>();//target may be a componentDB. not a shipDB
}
double distance = PositionDB.GetDistanceBetween(myPosition, targetPosition);
var detectionResolution = recever.Resolution;
var signalAtPosition = AttenuatedForDistance(target, distance);
double receverSensitivityFreqMin = recever.RecevingWaveformCapabilty.WavelengthMin_nm;
double receverSensitivityFreqAvg = recever.RecevingWaveformCapabilty.WavelengthAverage_nm;
double receverSensitivityFreqMax = recever.RecevingWaveformCapabilty.WavelengthMax_nm;
double receverSensitivityBest = recever.BestSensitivity_kW;
double receverSensitivityAltitiude = recever.BestSensitivity_kW - recever.WorstSensitivity_kW;
PercentValue quality = new PercentValue(0.0f);
double detectedMagnatude = 0;
foreach (var waveSpectra in signalAtPosition)
{
double signalWaveSpectraFreqMin = waveSpectra.Key.WavelengthMin_nm;
double signalWaveSpectraFreqAvg = waveSpectra.Key.WavelengthAverage_nm;
double signalWaveSpectraFreqMax = waveSpectra.Key.WavelengthMax_nm;
double signalWaveSpectraMagnatude_kW = waveSpectra.Value;
if (signalWaveSpectraMagnatude_kW > recever.BestSensitivity_kW) //check if the sensitivy is enough to pick anything up at any frequency.
{
if (Math.Max(receverSensitivityFreqMin, signalWaveSpectraFreqMin) < Math.Max(signalWaveSpectraFreqMin, signalWaveSpectraFreqMax))
{
//we've got something we can detect
double minDetectableWavelength = Math.Min(receverSensitivityFreqMin, signalWaveSpectraFreqMin);
double maxDetectableWavelenght = Math.Min(receverSensitivityFreqMax, signalWaveSpectraFreqMax);
double detectedAngleA = Math.Atan(receverSensitivityAltitiude / (receverSensitivityFreqAvg - receverSensitivityFreqMin));
double receverBaseLen = maxDetectableWavelenght - minDetectableWavelength;
double detectedAngleB = Math.Atan(signalWaveSpectraMagnatude_kW / (signalWaveSpectraFreqAvg - signalWaveSpectraFreqMax));
bool doesIntersect;
double intersectPointX;
double intersectPointY;
double distortion;
if (signalWaveSpectraFreqAvg < receverSensitivityFreqAvg) //RightsideDetection (recever's ideal wavelenght is higher than the signal wavelenght at it's loudest)
{
doesIntersect = Get_line_intersection(
signalWaveSpectraFreqAvg, signalWaveSpectraMagnatude_kW,
signalWaveSpectraFreqMin, 0,
receverSensitivityFreqAvg, recever.BestSensitivity_kW,
receverSensitivityFreqMax, recever.WorstSensitivity_kW,
out intersectPointX, out intersectPointY);
//offsetFromCenter = intersectPointX - signalWaveSpectraFreqAvg; //was going to use this for distortion but decided to simplify.
distortion = receverSensitivityFreqAvg - signalWaveSpectraFreqAvg;
}
else //LeftSideDetection
{
doesIntersect = Get_line_intersection(
signalWaveSpectraFreqAvg, signalWaveSpectraMagnatude_kW,
signalWaveSpectraFreqMax, 0,
receverSensitivityFreqAvg, recever.BestSensitivity_kW,
receverSensitivityFreqMin, recever.WorstSensitivity_kW,
out intersectPointX, out intersectPointY);
//offsetFromCenter = intersectPointX - signalWaveSpectraFreqAvg;
distortion = signalWaveSpectraFreqAvg - receverSensitivityFreqAvg;
}
if (doesIntersect) // then we're not detecting the peak of the signal
{
detectedMagnatude = intersectPointY - recever.BestSensitivity_kW;
distortion *= 2; //pentalty to quality of signal
}
else
{
detectedMagnatude = signalWaveSpectraMagnatude_kW - recever.BestSensitivity_kW;
}
quality = new PercentValue((float)(100 - distortion / signalWaveSpectraFreqMax));
}
}
}
return(new SensorReturnValues()
{
SignalStrength_kW = detectedMagnatude,
SignalQuality = quality
});
}
public static byte GetRawValue(PercentValue percentValue)
{
return(percentValue._percent);
}