mirror of
https://github.com/acemod/ACE3.git
synced 2024-08-30 18:23:18 +00:00
240 lines
10 KiB
Plaintext
240 lines
10 KiB
Plaintext
/*
|
|
* Author: Ruthberg
|
|
* Calculates the fireing solution
|
|
*
|
|
* Arguments:
|
|
* 0: Scope base angle <NUMBER>
|
|
* 1: Bullet mass <NUMBER>
|
|
* 2: Bore height <NUMBER>
|
|
* 3: air friction <NUMBER>
|
|
* 4: muzzle velocity <NUMBER>
|
|
* 5: temperature <NUMBER>
|
|
* 6: barometric pressure <NUMBER>
|
|
* 7: relative humidity <NUMBER>
|
|
* 8: simulation steps <NUMBER>
|
|
* 9: wind speed <ARRAY>
|
|
* 10: wind direction <NUMBER>
|
|
* 11: inclination angle <NUMBER>
|
|
* 12: target speed <NUMBER>
|
|
* 13: target range <NUMBER>
|
|
* 14: ballistic coefficient <NUMBER>
|
|
* 15: drag model <NUMBER>
|
|
* 16: atmosphere model <STRING>
|
|
* 17: Store range card data? <BOOL>
|
|
* 18: Stability factor <NUMBER>
|
|
* 19: Twist Direction <NUMBER>
|
|
* 20: Latitude <NUMBER>
|
|
*
|
|
* Return Value:
|
|
* 0: Elevation (MOA) <NUMBER>
|
|
* 1: Windage (MOA) <ARRAY>
|
|
* 2: Lead (MOA) <NUMBER>
|
|
* 3: Time of fligth (SECONDS) <NUMBER>
|
|
* 4: Remaining velocity (m/s) <NUMBER>
|
|
* 5: Remaining kinetic energy (ft·lb) <NUMBER>
|
|
* 6: Vertical coriolis drift (MOA) <NUMBER>
|
|
* 7: Horizontal coriolis drift (MOA) <NUMBER>
|
|
* 8: Spin drift (MOA) <NUMBER>
|
|
*
|
|
* Example:
|
|
* call ace_atragmx_calculate_target_range_assist
|
|
*
|
|
* Public: No
|
|
*/
|
|
#include "script_component.hpp"
|
|
|
|
private ["_scopeBaseAngle", "_bulletMass", "_boreHeight", "_airFriction", "_muzzleVelocity", "_temperature", "_barometricPressure", "_relativeHumidity", "_simSteps", "_windSpeed1", "_windSpeed2", "_windDirection", "_inclinationAngle", "_targetSpeed", "_targetRange", "_drag", "_bc", "_dragModel", "_atmosphereModel", "_storeRangeCardData", "_stabilityFactor", "_twistDirection", "_latitude", "_directionOfFire"];
|
|
_scopeBaseAngle = _this select 0;
|
|
_bulletMass = _this select 1;
|
|
_boreHeight = _this select 2;
|
|
_airFriction = _this select 3;
|
|
_muzzleVelocity = _this select 4;
|
|
_temperature = _this select 5;
|
|
_barometricPressure = _this select 6;
|
|
_relativeHumidity = _this select 7;
|
|
_simSteps = _this select 8;
|
|
_windSpeed1 = (_this select 9) select 0;
|
|
_windSpeed2 = (_this select 9) select 1;
|
|
_windDirection = _this select 10;
|
|
_inclinationAngle = _this select 11;
|
|
_targetSpeed = _this select 12;
|
|
_targetRange = _this select 13;
|
|
_bc = _this select 14;
|
|
_dragModel = _this select 15;
|
|
_atmosphereModel = _this select 16;
|
|
_storeRangeCardData = _this select 17;
|
|
_stabilityFactor = _this select 18;
|
|
_twistDirection = _this select 19;
|
|
_latitude = _this select 20;
|
|
_directionOfFire = _this select 21;
|
|
|
|
private ["_bulletPos", "_bulletVelocity", "_bulletAccel", "_bulletSpeed", "_gravity", "_deltaT"];
|
|
_bulletPos = [0, 0, 0];
|
|
_bulletVelocity = [0, 0, 0];
|
|
_bulletAccel = [0, 0, 0];
|
|
_bulletSpeed = 0;
|
|
_gravity = [0, sin(_scopeBaseAngle + _inclinationAngle) * -9.80665, cos(_scopeBaseAngle + _inclinationAngle) * -9.80665];
|
|
_deltaT = 1 / _simSteps;
|
|
|
|
private ["_elevation", "_windage1", "_windage2", "_lead", "_TOF", "_trueVelocity", "_trueSpeed", "_kineticEnergy", "_verticalCoriolis", "_verticalDeflection", "_horizontalCoriolis", "_horizontalDeflection", "_spinDrift", "_spinDeflection"];
|
|
_elevation = 0;
|
|
_windage1 = 0;
|
|
_windage2 = 0;
|
|
_lead = 0;
|
|
_TOF = 0;
|
|
_trueVelocity = [0, 0, 0];
|
|
_trueSpeed = 0;
|
|
_verticalCoriolis = 0;
|
|
_verticalDeflection = 0;
|
|
_horizontalCoriolis = 0;
|
|
_horizontalDeflection = 0;
|
|
_spinDrift = 0;
|
|
_spinDeflection = 0;
|
|
|
|
private ["_n", "_range", "_rangeFactor"];
|
|
_n = 0;
|
|
_range = 0;
|
|
_rangeFactor = 1;
|
|
if (_storeRangeCardData) then {
|
|
if (GVAR(currentUnit) == 1) then {
|
|
_rangeFactor = 1.0936133;
|
|
};
|
|
GVAR(rangeCardData) = [];
|
|
};
|
|
|
|
private ["_wind1", "_wind2", "_windDrift"];
|
|
_wind1 = [cos(270 - _windDirection * 30) * _windSpeed1, sin(270 - _windDirection * 30) * _windSpeed1, 0];
|
|
_wind2 = [cos(270 - _windDirection * 30) * _windSpeed2, sin(270 - _windDirection * 30) * _windSpeed2, 0];
|
|
_windDrift = 0;
|
|
if ((missionNamespace getVariable [QEGVAR(advanced_ballistics,enabled), false]) && (missionNamespace getVariable [QEGVAR(advanced_ballistics,AdvancedAirDragEnabled), false])) then {
|
|
_bc = [_bc, _temperature, _barometricPressure, _relativeHumidity, _atmosphereModel] call EFUNC(advanced_ballistics,calculateAtmosphericCorrection);
|
|
};
|
|
|
|
private ["_speedTotal", "_stepsTotal", "_speedAverage"];
|
|
_speedTotal = 0;
|
|
_stepsTotal = 0;
|
|
_speedAverage = 0;
|
|
|
|
private ["_eoetvoesMultiplier"];
|
|
_eoetvoesMultiplier = 0;
|
|
if (missionNamespace getVariable [QEGVAR(advanced_ballistics,EoetvoesEnabled), false]) then {
|
|
_eoetvoesMultiplier = 2 * (0.0000729 * _muzzleVelocity / -9.80665) * cos(_latitude) * sin(_directionOfFire);
|
|
};
|
|
|
|
_TOF = 0;
|
|
|
|
_bulletPos set [0, 0];
|
|
_bulletPos set [1, 0];
|
|
_bulletPos set [2, -(_boreHeight / 100)];
|
|
|
|
_bulletVelocity set [0, 0];
|
|
_bulletVelocity set [1, Cos(_scopeBaseAngle) * _muzzleVelocity];
|
|
_bulletVelocity set [2, Sin(_scopeBaseAngle) * _muzzleVelocity];
|
|
|
|
while {_TOF < 15 && (_bulletPos select 1) < _targetRange} do {
|
|
_bulletSpeed = vectorMagnitude _bulletVelocity;
|
|
|
|
_speedTotal = _speedTotal + _bulletSpeed;
|
|
_stepsTotal = _stepsTotal + 1;
|
|
_speedAverage = (_speedTotal / _stepsTotal);
|
|
|
|
_trueVelocity = _bulletVelocity vectorDiff _wind1;
|
|
_trueSpeed = vectorMagnitude _trueVelocity;
|
|
|
|
if (missionNamespace getVariable [QEGVAR(advanced_ballistics,enabled), false]) then {
|
|
if (missionNamespace getVariable [QEGVAR(advanced_ballistics,AdvancedAirDragEnabled), false]) then {
|
|
_drag = if (missionNamespace getVariable [QEGVAR(advanced_ballistics,extensionAvailable), false]) then {
|
|
parseNumber(("ace_advanced_ballistics" callExtension format["retard:%1:%2:%3", _dragModel, _bc, _trueSpeed]))
|
|
} else {
|
|
([_dragModel, _bc, _trueSpeed] call EFUNC(advanced_ballistics,calculateRetardation))
|
|
};
|
|
_bulletAccel = (vectorNormalized _trueVelocity) vectorMultiply (-1 * _drag);
|
|
};
|
|
} else {
|
|
_bulletAccel = _trueVelocity vectorMultiply (_trueSpeed * _airFriction);
|
|
};
|
|
|
|
_bulletAccel = _bulletAccel vectorAdd _gravity;
|
|
|
|
_bulletVelocity = _bulletVelocity vectorAdd (_bulletAccel vectorMultiply _deltaT);
|
|
_bulletPos = _bulletPos vectorAdd (_bulletVelocity vectorMultiply _deltaT);
|
|
|
|
_TOF = _TOF + _deltaT;
|
|
|
|
if (_storeRangeCardData) then {
|
|
_range = GVAR(rangeCardStartRange) + _n * GVAR(rangeCardIncrement);
|
|
if ((_bulletPos select 1) * _rangeFactor >= _range && _range <= GVAR(rangeCardEndRange)) then {
|
|
if ((_bulletPos select 1) > 0) then {
|
|
_elevation = - atan((_bulletPos select 2) / (_bulletPos select 1));
|
|
_windage1 = - atan((_bulletPos select 0) / (_bulletPos select 1));
|
|
_windDrift = (_wind2 select 0) * (_TOF - (_range / _rangeFactor) / _muzzleVelocity);
|
|
_windage2 = - atan(_windDrift / (_bulletPos select 1));
|
|
};
|
|
if (_range != 0) then {
|
|
_lead = (_targetSpeed * _TOF) / (Tan(3.38 / 60) * _range);
|
|
};
|
|
_kineticEnergy = 0.5 * (_bulletMass / 1000 * (_bulletSpeed ^ 2));
|
|
_kineticEnergy = _kineticEnergy * 0.737562149;
|
|
|
|
if ((missionNamespace getVariable [QEGVAR(advanced_ballistics,enabled), false]) && (_bulletPos select 1) > 0) then {
|
|
if (missionNamespace getVariable [QEGVAR(advanced_ballistics,CoriolisEnabled), false]) then {
|
|
_horizontalDeflection = 0.0000729 * ((_bulletPos select 1) ^ 2) * sin(_latitude) / _speedAverage;
|
|
_horizontalCoriolis = - atan(_horizontalDeflection / (_bulletPos select 1));
|
|
_windage1 = _windage1 + _horizontalCoriolis;
|
|
_windage2 = _windage2 + _horizontalCoriolis;
|
|
};
|
|
if (missionNamespace getVariable [QEGVAR(advanced_ballistics,EoetvoesEnabled), false]) then {
|
|
_verticalDeflection = (_bulletPos select 2) * _eoetvoesMultiplier;
|
|
_verticalCoriolis = - atan(_verticalDeflection / (_bulletPos select 1));
|
|
_elevation = _elevation + _verticalCoriolis;
|
|
};
|
|
if (missionNamespace getVariable [QEGVAR(advanced_ballistics,SpinDriftEnabled), false]) then {
|
|
_spinDeflection = _twistDirection * 0.0254 * 1.25 * (_stabilityFactor + 1.2) * _TOF ^ 1.83;
|
|
_spinDrift = - atan(_spinDeflection / (_bulletPos select 1));
|
|
_windage1 = _windage1 + _spinDrift;
|
|
_windage2 = _windage2 + _spinDrift;
|
|
};
|
|
};
|
|
|
|
GVAR(rangeCardData) set [_n, [_range, _elevation * 60, [_windage1 * 60, _windage2 * 60], _lead, _TOF, _bulletSpeed, _kineticEnergy]];
|
|
_n = _n + 1;
|
|
};
|
|
};
|
|
};
|
|
|
|
if ((_bulletPos select 1) > 0) then {
|
|
_elevation = - atan((_bulletPos select 2) / (_bulletPos select 1));
|
|
_windage1 = - atan((_bulletPos select 0) / (_bulletPos select 1));
|
|
_windDrift = (_wind2 select 0) * (_TOF - _targetRange / _muzzleVelocity);
|
|
_windage2 = - atan(_windDrift / (_bulletPos select 1));
|
|
};
|
|
|
|
if (_targetRange != 0) then {
|
|
_lead = (_targetSpeed * _TOF) / (Tan(3.38 / 60) * _targetRange);
|
|
};
|
|
|
|
_kineticEnergy = 0.5 * (_bulletMass / 1000 * (_bulletSpeed ^ 2));
|
|
_kineticEnergy = _kineticEnergy * 0.737562149;
|
|
|
|
if ((missionNamespace getVariable [QEGVAR(advanced_ballistics,enabled), false]) && (_bulletPos select 1) > 0) then {
|
|
if (missionNamespace getVariable [QEGVAR(advanced_ballistics,CoriolisEnabled), false]) then {
|
|
_horizontalDeflection = 0.0000729 * ((_bulletPos select 1) ^ 2) * sin(_latitude) / _speedAverage;
|
|
_horizontalCoriolis = - atan(_horizontalDeflection / (_bulletPos select 1));
|
|
_windage1 = _windage1 + _horizontalCoriolis;
|
|
_windage2 = _windage2 + _horizontalCoriolis;
|
|
};
|
|
if (missionNamespace getVariable [QEGVAR(advanced_ballistics,EoetvoesEnabled), false]) then {
|
|
_verticalDeflection = (_bulletPos select 2) * _eoetvoesMultiplier;
|
|
_verticalCoriolis = - atan(_verticalDeflection / (_bulletPos select 1));
|
|
_elevation = _elevation + _verticalCoriolis;
|
|
};
|
|
if (missionNamespace getVariable [QEGVAR(advanced_ballistics,SpinDriftEnabled), false]) then {
|
|
_spinDeflection = _twistDirection * 0.0254 * 1.25 * (_stabilityFactor + 1.2) * _TOF ^ 1.83;
|
|
_spinDrift = - atan(_spinDeflection / (_bulletPos select 1));
|
|
_windage1 = _windage1 + _spinDrift;
|
|
_windage2 = _windage2 + _spinDrift;
|
|
};
|
|
};
|
|
|
|
[_elevation * 60, [_windage1 * 60, _windage2 * 60], _lead, _TOF, _bulletSpeed, _kineticEnergy, _verticalCoriolis * 60, _horizontalCoriolis * 60, _spinDrift * 60]
|