public override bool AttemptDetectUnit(BaseUnit unit, double distanceM)
{
// CZ etc: http://www.fas.org/man/dod-101/navy/docs/es310/SNR_PROP/snr_prop.htm
//calculate blind zone:
if (!IsAbleToDetectUnit(unit, distanceM))
{
return(false);
}
double bearingDegSensor = GetCurrentSensorBearingDeg();
double bearingDegToTarget = MapHelper.CalculateCombinedBearingDeg(bearingDegSensor,
MapHelper.CalculateBearingDegrees(OwnerUnit.Position.Coordinate, unit.Position.Coordinate));
//needs to distinguish sensors: dipping, hull mounted, towed, etc:
switch (this.SensorClass.SonarType) //accounting for baffle arcs ie blind zones
{
case GameConstants.SonarType.HullMountedBow:
if (MapHelper.IsAngleWithinRangeDeg(bearingDegToTarget, 150, 210))
{
return(false);
}
break;
case GameConstants.SonarType.HullMountedKeel:
if (MapHelper.IsAngleWithinRangeDeg(bearingDegToTarget, 135, 225))
{
return(false);
}
break;
case GameConstants.SonarType.HullMountedFlankArray: //assumes both starbord and port
if (MapHelper.IsAngleWithinRangeDeg(bearingDegToTarget, 330, 30))
{
return(false);
}
if (MapHelper.IsAngleWithinRangeDeg(bearingDegToTarget, 150, 210))
{
return(false);
}
break;
case GameConstants.SonarType.DippingOrSonobuoy: //no bafflezones
if (OwnerUnit.ActualSpeedKph > 30) //these sonars do not operate if moving
{
return(false);
}
break;
case GameConstants.SonarType.TowedArray:
if (MapHelper.IsAngleWithinRangeDeg(bearingDegToTarget, 315, 45)) //MapHelper.IsAngleWithinRangeDeg(bearingDegToTarget, 135, 225))
{
return(false);
}
if (OwnerUnit.ActualSpeedKph > GameConstants.DEFAULT_SLOW_SPEED) //do not operate above 15 kph
{
return(false);
}
break;
default:
break;
}
double noiseLevelTargetPercent = unit.GetCurrentNoiseLevelPercentage();
double noiseLevelPlatformPercent = OwnerUnit.GetCurrentNoiseLevelPercentage();
double detectionRangeM = 0;
int currentSeaState = 0;
var weather = unit.GetWeatherSystem();
if (weather != null)
{
currentSeaState = weather.SeaState;
}
double sensorDepthM = (double)OwnerUnit.Position.HeightOverSeaLevelM - unit.UnitClass.DraftM;
double targetDepthM = (double)unit.Position.HeightOverSeaLevelM;
if (this.SensorClass.IsVariableDepthSensor && this.IsDeployedIntermediateDepth && sensorDepthM < GameConstants.DEFAULT_DEPTH_THERMAL_LAYER_M)
{
sensorDepthM = GameConstants.DEFAULT_DEPTH_THERMAL_LAYER_M - 10;
}
TerrainLineSummary terrainLineSummary = GetTerrainHeightSummaryToTarget(unit);
if (sensorDepthM < terrainLineSummary.MaxHeightM && targetDepthM < terrainLineSummary.MaxHeightM)
{
return(false); //higher terrain between objects - cannot detect
}
if (this.IsActive)
{
detectionRangeM = this.SensorClass.SonarActiveReferenceRangeM;
if (OwnerUnit.Position.HeightOverSeaLevelM > GameConstants.DEPTH_SHALLOW_MIN_M ||
unit.Position.HeightOverSeaLevelM > GameConstants.DEPTH_SHALLOW_MIN_M)
{
if (currentSeaState > 8)
{
detectionRangeM *= 0.1;
}
else if (currentSeaState > 6)
{
detectionRangeM *= 0.25;
}
else if (currentSeaState > 4)
{
detectionRangeM *= 0.5;
}
}
CurrentEffectiveActiveDetectionRangeM = detectionRangeM;
if (terrainLineSummary.MaxHeightBehindM > targetDepthM)
{
detectionRangeM *= 0.5;
}
if (unit.UnitClass.IsSonarShielded)
{
detectionRangeM *= 0.5;
}
detectionRangeM = (detectionRangeM / noiseLevelPlatformPercent) * 100.0; //hmm
double detectionStrength = detectionRangeM / distanceM;
if (IsOnDifferentSidesOfThermalLayer(unit.Position)) //TODO: Calculate angle to layer and calculate detection based on it
{
detectionStrength *= 0.5;
}
if (detectionStrength > 1)
{
DetectedUnit detect = CreateOrUpdateDetectionReport(unit, detectionStrength, distanceM,
0, 0); //check!
return(detect != null);
}
//unit.UnitClass.IsSonarShielded
//remember, cannot identify
}
else //passive detection
{
detectionRangeM = this.SensorClass.SonarPassiveReferenceRangeM;
if (unit.HasActiveSonar)
{
noiseLevelTargetPercent = 800;
}
detectionRangeM = (detectionRangeM / noiseLevelPlatformPercent) * 100.0; //hmm
if (distanceM > detectionRangeM)
{
return(false);
}
if (sensorDepthM <= GameConstants.DEFAULT_DEPTH_THERMAL_LAYER_M &&
unit.Position.HeightOverSeaLevelM >= GameConstants.DEPTH_PERISCOPE_MIN_M) //sound channels
{
detectionRangeM *= 3.0;
}
if (OwnerUnit.Position.HeightOverSeaLevelM > GameConstants.DEPTH_SHALLOW_MIN_M ||
unit.Position.HeightOverSeaLevelM > GameConstants.DEPTH_SHALLOW_MIN_M)
{
if (currentSeaState > 8)
{
detectionRangeM *= 0.1;
}
else if (currentSeaState > 6)
{
detectionRangeM *= 0.25;
}
else if (currentSeaState > 4)
{
detectionRangeM *= 0.5;
}
else if (currentSeaState > 2)
{
detectionRangeM *= 0.8;
}
}
if (terrainLineSummary.MaxHeightBehindM > targetDepthM)
{
detectionRangeM *= 0.5;
}
CurrentEffectivePassiveDetectionRangeM = detectionRangeM;
detectionRangeM *= noiseLevelTargetPercent / 100.0;
double detectionStrength = detectionRangeM / distanceM;
if (IsOnDifferentSidesOfThermalLayer(unit.Position))
{
detectionStrength *= 0.5;
}
if (detectionStrength > 1)
{
DetectedUnit detect = CreateOrUpdateDetectionReport(unit, detectionStrength, distanceM,
0, 0); //check!
return(detect != null);
}
//can identify, but not fix
}
return(false);
//return base.AttemptDetectUnit(unit, distanceM);
}
