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Update artillerytables.cpp

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PabstMirror 2019-03-10 10:18:14 -05:00
parent 4120eca98b
commit 93eb04f52a
1 changed files with 30 additions and 34 deletions
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64
extensions/artillerytables/artillerytables.cpp
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@ -3,7 +3,7 @@
* Author: PabstMirror
*/
//#define TEST_EXE
//#define TEST_EXE
#define _USE_MATH_DEFINES
#include <cmath>
@ -30,25 +30,25 @@ extern "C" {
#endif
// Constants
const double timeStep = 1.0 / 100;
const double rangeSearchErrorMax = 0.001; // ratio * distance
const double rangeSearchAngleConvergance = 0.00001;
const double gravityABS = 9.8066;
const ace::vector3<double> gravityAccl(0, 0, -1 * gravityABS);
static const double timeStep = 1.0 / 100;
static const double rangeSearchErrorMax = 0.001; // ratio * distance
static const double rangeSearchAngleConvergance = 0.00001;
static const double gravityABS = 9.8066;
static const ace::vector3<double> gravityAccl(0, 0, -1 * gravityABS);
// Globals:
std::vector<std::future<std::string>> fWorkers;
unsigned int getLineIndex = 0;
std::tuple<double, double, double> simulateShot(const double& _fireAngleRad, const double& _muzzleVelocity, const double& _heightOfTarget, const double& _crossWind, const double& _tailWind, const double& _temperature, const double& _airDensity, double _airFriction) {
double kCoefficient = -1.0 * _airDensity * _airFriction;
double powderEffects = (_airFriction) ? ((_temperature + 273.13) / 288.13 - 1) / 40 + 1 : 1.0;
const double kCoefficient = -1.0 * _airDensity * _airFriction;
const double powderEffects = (_airFriction) ? ((_temperature + 273.13) / 288.13 - 1) / 40 + 1 : 1.0;
double currentTime = 0;
ace::vector3<double> currentPosition(0, 0, 0);
ace::vector3<double> lastPosition(currentPosition);
ace::vector3<double> currentVelocity(0, powderEffects * _muzzleVelocity * cos(_fireAngleRad), powderEffects * _muzzleVelocity * sin(_fireAngleRad));
ace::vector3<double> wind(_crossWind, _tailWind, 0);
const ace::vector3<double> wind(_crossWind, _tailWind, 0);
while ((currentVelocity.z() > 0) || (currentPosition.z() >= _heightOfTarget)) {
lastPosition = currentPosition;
@ -59,7 +59,7 @@ std::tuple<double, double, double> simulateShot(const double& _fireAngleRad, con
currentTime += timeStep;
}
double lastCurrentRatio((_heightOfTarget - currentPosition.z()) / (lastPosition.z() - currentPosition.z()));
const double lastCurrentRatio((_heightOfTarget - currentPosition.z()) / (lastPosition.z() - currentPosition.z()));
ace::vector3<double> finalPos = lastPosition.lerp(currentPosition, lastCurrentRatio);
return { finalPos.x(), finalPos.y(), currentTime };
@ -101,7 +101,7 @@ std::tuple<double, double, double> simulateFindSolution(const double& _rangeToHi
if ((angleRoot > _maxElev) || (angleRoot < _minElev)) {
return { -1, -1, -1 };
};
double tof = _rangeToHit / (_muzzleVelocity * cos(angleRoot));
const double tof = _rangeToHit / (_muzzleVelocity * cos(angleRoot));
return { _rangeToHit, angleRoot, tof };
}
@ -119,8 +119,7 @@ std::tuple<double, double, double> simulateFindSolution(const double& _rangeToHi
// printf("elev %f [%f, %f]range%f\n goes %f [%f]\n", currentElevation, searchMin, searchMax, (searchMax - searchMin), resultDistance, currentError);
if ((currentError > 0) ^ (!_highArc)) {
searchMax = currentElevation;
}
else {
} else {
searchMin = currentElevation;
}
} while ((searchMax - searchMin) > rangeSearchAngleConvergance);
@ -160,13 +159,12 @@ std::string simulateCalcRangeTableLine(const double& _rangeToHit, const double&
returnSS << "\",\"";
if (lineHeightElevation > 0) {
double drElevAdjust = lineHeightElevation - lineElevation;
double drTofAdjust = lineHeightTimeOfFlight - lineTimeOfFlight;
const double drElevAdjust = lineHeightElevation - lineElevation;
const double drTofAdjust = lineHeightTimeOfFlight - lineTimeOfFlight;
writeNumber(returnSS, drElevAdjust * 3200.0 / M_PI, 0, 0);
returnSS << "\",\"";
writeNumber(returnSS, drTofAdjust, 0, 1);
}
else {
} else {
// low angle shots won't be able to adjust down further
returnSS << "-\",\"-";
}
@ -179,25 +177,25 @@ std::string simulateCalcRangeTableLine(const double& _rangeToHit, const double&
double xOffset, yOffset;
// Crosswind
std::tie(xOffset, std::ignore, std::ignore) = simulateShot(lineElevation, _muzzleVelocity, 0, 10, 0, 15, 1, _airFriction);
double crosswindOffsetRad = atan2(xOffset, actualDistance) / 10;
const double crosswindOffsetRad = atan2(xOffset, actualDistance) / 10;
// Headwind
std::tie(std::ignore, yOffset, std::ignore) = simulateShot(lineElevation, _muzzleVelocity, 0, 0, -10, 15, 1, _airFriction);
double headwindOffset = (actualDistance - yOffset) / 10;
const double headwindOffset = (actualDistance - yOffset) / 10;
// Tailwind
std::tie(std::ignore, yOffset, std::ignore) = simulateShot(lineElevation, _muzzleVelocity, 0, 0, 10, 15, 1, _airFriction);
double tailwindOffset = (actualDistance - yOffset) / 10;
const double tailwindOffset = (actualDistance - yOffset) / 10;
// Air Temp Dec
std::tie(std::ignore, yOffset, std::ignore) = simulateShot(lineElevation, _muzzleVelocity, 0, 0, 0, 5, 1, _airFriction);
double tempDecOffset = (actualDistance - yOffset) / 10;
const double tempDecOffset = (actualDistance - yOffset) / 10;
// Air Temp Inc
std::tie(std::ignore, yOffset, std::ignore) = simulateShot(lineElevation, _muzzleVelocity, 0, 0, 0, 25, 1, _airFriction);
double tempIncOffset = (actualDistance - yOffset) / 10;
const double tempIncOffset = (actualDistance - yOffset) / 10;
// Air Density Dec
std::tie(std::ignore, yOffset, std::ignore) = simulateShot(lineElevation, _muzzleVelocity, 0, 0, 0, 15, 0.9, _airFriction);
double airDensityDecOffset = (actualDistance - yOffset) / 10;
const double airDensityDecOffset = (actualDistance - yOffset) / 10;
// Air Density Inc
std::tie(std::ignore, yOffset, std::ignore) = simulateShot(lineElevation, _muzzleVelocity, 0, 0, 0, 15, 1.1, _airFriction);
double airDensityIncOffset = (actualDistance - yOffset) / 10;
const double airDensityIncOffset = (actualDistance - yOffset) / 10;
writeNumber(returnSS, crosswindOffsetRad * 3200.0 / M_PI, 1, 1);
returnSS << "\",\"";
@ -213,8 +211,7 @@ std::string simulateCalcRangeTableLine(const double& _rangeToHit, const double&
returnSS << "\",\"";
writeNumber(returnSS, airDensityIncOffset, 1, (abs(airDensityIncOffset) > 9.949) ? 0 : 1);
returnSS << "\"]";
}
else {
} else {
returnSS << "-\",\"-\",\"-\",\"-\",\"-\",\"-\",\"-\"]"; // 7 dashes
}
return (returnSS.str());
@ -241,11 +238,11 @@ int RVExtensionArgs(char* output, int outputSize, const char* function, const ch
if (!strcmp(function, "start")) {
if (argsCnt != 5) { return -2; } // Error: not enough args
double muzzleVelocity = strtod(args[0], NULL);
double airFriction = strtod(args[1], NULL);
const double muzzleVelocity = strtod(args[0], NULL);
const double airFriction = strtod(args[1], NULL);
double minElev = (M_PI / 180.0) * strtod(args[2], NULL);
double maxElev = (M_PI / 180.0) * strtod(args[3], NULL);
bool highArc = !strcmp(args[4], "true");
const bool highArc = !strcmp(args[4], "true");
// Reset workers:
fWorkers.clear();
@ -257,13 +254,12 @@ int RVExtensionArgs(char* output, int outputSize, const char* function, const ch
maxElev = std::min(maxElev, 88 * (M_PI / 180.0)); // cap max to 88 degrees (mk6)
if (highArc) {
minElev = std::max(minElev, bestAngle);
}
else {
} else {
maxElev = std::min(maxElev, bestAngle);
}
double loopStart = (bestDistance < 4000) ? 50 : 100;
double loopInc = (bestDistance < 5000) ? 50 : 100; // simplify when range gets high
double loopMaxRange = std::min(bestDistance, 25000.0); // with no air resistance, max range could go higher than 60km
const double loopStart = (bestDistance < 4000) ? 50 : 100;
const double loopInc = (bestDistance < 5000) ? 50 : 100; // simplify when range gets high
const double loopMaxRange = std::min(bestDistance, 25000.0); // with no air resistance, max range could go higher than 60km
if (maxElev > minElev) { // don't bother if we can't hit anything (e.g. mortar in low mode)
for (double range = loopStart; range < loopMaxRange; range += loopInc) {