71 lines
2.4 KiB
C++
71 lines
2.4 KiB
C++
// Copyright 2016 Mookie. All Rights Reserved.
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#include "EBBullet.h"
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FVector AEBBullet::GetWind_Implementation(UWorld* World, FVector Location) const{
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return Wind;
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}
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float AEBBullet::GetAirDensity_Implementation(UWorld* World, FVector Location) const{
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switch (AtmosphereType) {
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case (EEBAtmosphereType::AT_Curve): {
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float airmp = SeaLevelAirDensity / GetCurveValue(AirDensityCurve, 0, SeaLevelAirDensity);
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return GetCurveValue(AirDensityCurve, GetAltitude(World, Location) / WorldScale, SeaLevelAirDensity)* airmp;
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}
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case (EEBAtmosphereType::AT_Earth): {
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return GetAltitudeDensity(GetAltitude(World, Location) / WorldScale / 100.0f);
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}
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default:{
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return SeaLevelAirDensity;
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}
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}
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}
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float AEBBullet::GetSpeedOfSound_Implementation(UWorld* World, FVector Location) const{
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// Safety check: Ensure WorldScale is valid
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float SafeWorldScale = FMath::Max(WorldScale, 0.01f);
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if (!SpeedOfSoundVariesWithAltitude) {
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return FMath::Max(SeaLevelSpeedOfSound * SafeWorldScale, 1.0f);
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}
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float Altitude = GetAltitude(World, Location);
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float CurveValueAtSeaLevel = GetCurveValue(SpeedOfSoundCurve, 0, SeaLevelSpeedOfSound);
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// Safety check: Prevent division by zero
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if (FMath::IsNearlyZero(CurveValueAtSeaLevel, 0.01f)) {
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return FMath::Max(SeaLevelSpeedOfSound * SafeWorldScale, 1.0f);
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}
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float soundvmp = SeaLevelSpeedOfSound / CurveValueAtSeaLevel;
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float result = GetCurveValue(SpeedOfSoundCurve, Altitude, SeaLevelSpeedOfSound) * SafeWorldScale * soundvmp;
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// Safety check: Ensure result is never zero or negative
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return FMath::Max(result, 1.0f);
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}
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float AEBBullet::GetAltitudePressure(float AltitudeMeter) const {
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return FMath::Max(SeaLevelAirPressure * FMath::Pow((1 - (0.0000225577 * AltitudeMeter)), 5.25588), 0.0f);
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}
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float AEBBullet::GetAltitudeTemperature(float AltitudeMeter) const {
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return SeaLevelAirTemperature - (TemperatureLapseRate * FMath::Min(AltitudeMeter, TropopauseAltitude));
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}
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float AEBBullet::GetAltitudeDensity(float AltitudeMeter) const {
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float Temperature = GetAltitudeTemperature(AltitudeMeter);
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float Pressure = GetAltitudePressure(AltitudeMeter);
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return Pressure * 100.0f / ((Temperature + 273.15) * SpecificGasConstant);
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}
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float AEBBullet::GetAltitude(UWorld* World, FVector Location) const{
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FVector DistanceFromOrigin = (Location - WorldCenterLocation + FVector(World->OriginLocation));
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if (SphericalAltitude)
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{
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return (DistanceFromOrigin.Size() - SeaLevelRadius);
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}
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else {
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return DistanceFromOrigin.Z;
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}
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} |