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ACE3/addons/advanced_ballistics/functions/fnc_handleFired.sqf
ulteq 89e33dc177 Refactored the weather module: 
* No changes in functionality
2015-04-20 13:54:22 +02:00

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/*
* Author: Glowbal, Ruthberg
*
* Handles advanced ballistics for (BulletBase) projectiles
*
* Arguments:
* 0: unit - Object the event handler is assigned to <OBJECT>
* 1: weapon - Fired weapon <STRING>
* 2: muzzle - Muzzle that was used <STRING>
* 3: mode - Current mode of the fired weapon <STRING>
* 4: ammo - Ammo used <STRING>
* 5: magazine - magazine name which was used <STRING>
* 6: projectile - Object of the projectile that was shot <OBJECT>
*
* Return Value:
* Nothing
*
* Public: No
*/
#include "script_component.hpp"
private ["_unit", "_weapon", "_mode", "_ammo", "_magazine", "_caliber", "_bullet", "_abort", "_index", "_opticsName", "_opticType", "_bulletTraceVisible", "_temperature", "_barometricPressure", "_atmosphereModel", "_bulletMass", "_bulletLength", "_airFriction", "_dragModel", "_muzzleVelocity", "_muzzleVelocityCoef", "_muzzleAccessory", "_initSpeedCoef", "_muzzleVelocityShift", "_bulletVelocity", "_bulletSpeed", "_bulletLength", "_bulletWeight", "_barrelTwist", "_twistDirection", "_stabilityFactor", "_transonicStabilityCoef"];
_unit = _this select 0;
_weapon = _this select 1;
_mode = _this select 3;
_ammo = _this select 4;
_magazine = _this select 5;
_bullet = _this select 6;
_abort = false;
if (!hasInterface) exitWith {};
if (!alive _bullet) exitWith {};
if (!GVAR(enabled)) exitWith {};
if (!([_unit] call EFUNC(common,isPlayer))) exitWith {};
if (underwater _unit) exitWith {};
if (!(_ammo isKindOf "BulletBase")) exitWith {};
if (_unit distance ACE_player > GVAR(simulationRadius)) exitWith {};
if (GVAR(onlyActiveForLocalPlayers) && _unit != ACE_player) then { _abort = true; };
//if (!GVAR(vehicleGunnerEnabled) && !(_unit isKindOf "Man")) then { _abort = true; }; // TODO: We currently do not have firedEHs on vehicles
if (GVAR(disabledInFullAutoMode) && getNumber(configFile >> "cfgWeapons" >> _weapon >> _mode >> "autoFire") == 1) then { _abort = true; };
if (_abort && alwaysSimulateForSnipers) then {
// The shooter is non local
if (currentWeapon _unit == primaryWeapon _unit && count primaryWeaponItems _unit > 2) then {
_opticsName = (primaryWeaponItems _unit) select 2;
_opticType = getNumber(configFile >> "cfgWeapons" >> _opticsName >> "ItemInfo" >> "opticType");
_abort = _opticType != 2; // We only abort if the non local shooter is not a sniper
};
};
if (_abort || !(GVAR(extensionAvailable))) exitWith {
[_bullet, getNumber(configFile >> "cfgAmmo" >> _ammo >> "airFriction")] call EFUNC(winddeflection,updateTrajectoryPFH);
};
_airFriction = getNumber(configFile >> "cfgAmmo" >> _ammo >> "airFriction");
_muzzleVelocity = getNumber(configFile >> "cfgMagazines" >> _magazine >> "initSpeed");
_muzzleVelocityCoef = getNumber(configFile >> "cfgWeapons" >> _weapon >> "initSpeed");
if (_muzzleVelocityCoef > 0) then {
_muzzleVelocity = _muzzleVelocityCoef;
};
if (_muzzleVelocityCoef < 0) then {
_muzzleVelocity = _muzzleVelocity * (-1 * _muzzleVelocityCoef);
};
_muzzleAccessory = "";
switch (currentWeapon _unit) do {
case primaryWeapon _unit: { _muzzleAccessory = (primaryWeaponItems _unit) select 0; };
case handgunWeapon _unit: { _muzzleAccessory = (handgunItems _unit) select 0; };
};
if (_muzzleAccessory != "" && isNumber(configFile >> "cfgWeapons" >> _muzzleAccessory >> "ItemInfo" >> "MagazineCoef" >> "initSpeed")) then {
_initSpeedCoef = getNumber(configFile >> "cfgWeapons" >> _muzzleAccessory >> "ItemInfo" >> "MagazineCoef" >> "initSpeed");
_muzzleVelocity = _muzzleVelocity * _initSpeedCoef;
};
if (GVAR(barrelLengthInfluenceEnabled)) then {
_muzzleVelocityShift = [_ammo, _weapon, _muzzleVelocity] call FUNC(calculateBarrelLengthVelocityShift);
if (_muzzleVelocityShift != 0) then {
_bulletVelocity = velocity _bullet;
_bulletSpeed = vectorMagnitude _bulletVelocity;
_bulletVelocity = _bulletVelocity vectorAdd ((vectorNormalized _bulletVelocity) vectorMultiply (_muzzleVelocityShift * (_bulletSpeed / _muzzleVelocity)));
_bullet setVelocity _bulletVelocity;
_muzzleVelocity = _muzzleVelocity + _muzzleVelocityShift;
};
};
if (GVAR(ammoTemperatureEnabled)) then {
_temperature = GET_TEMPERATURE_AT_HEIGHT((getPosASL _unit) select 2);
_muzzleVelocityShift = [_ammo, _temperature] call FUNC(calculateAmmoTemperatureVelocityShift);
if (_muzzleVelocityShift != 0) then {
_bulletVelocity = velocity _bullet;
_bulletSpeed = vectorMagnitude _bulletVelocity;
_bulletVelocity = _bulletVelocity vectorAdd ((vectorNormalized _bulletVelocity) vectorMultiply (_muzzleVelocityShift * (_bulletSpeed / _muzzleVelocity)));
_bullet setVelocity _bulletVelocity;
_muzzleVelocity = _muzzleVelocity + _muzzleVelocityShift;
};
};
_bulletTraceVisible = false;
if (GVAR(bulletTraceEnabled) && cameraView == "GUNNER" && currentWeapon ACE_player == primaryWeapon ACE_player && count primaryWeaponItems ACE_player > 2) then {
_opticsName = (primaryWeaponItems ACE_player) select 2;
_opticType = getNumber(configFile >> "cfgWeapons" >> _opticsName >> "ItemInfo" >> "opticType");
_bulletTraceVisible = (_opticType == 2 || currentWeapon ACE_player in ["ACE_Vector", "Binocular", "Rangefinder", "Laserdesignator"]);
};
_caliber = getNumber(configFile >> "cfgAmmo" >> _ammo >> "ACE_caliber");
_bulletLength = getNumber(configFile >> "cfgAmmo" >> _ammo >> "ACE_bulletLength");
_bulletMass = getNumber(configFile >> "cfgAmmo" >> _ammo >> "ACE_bulletMass");
_barrelTwist = getNumber(configFile >> "cfgWeapons" >> _weapon >> "ACE_barrelTwist");
_stabilityFactor = 1.5;
if (_caliber > 0 && _bulletLength > 0 && _bulletMass > 0 && _barrelTwist > 0) then {
_temperature = GET_TEMPERATURE_AT_HEIGHT((getPosASL _unit) select 2);
_barometricPressure = ((getPosASL _bullet) select 2) call EFUNC(weather,calculateBarometricPressure);
_stabilityFactor = [_caliber, _bulletLength, _bulletMass, _barrelTwist, _muzzleVelocity, _temperature, _barometricPressure] call FUNC(calculateStabilityFactor);
};
_twistDirection = 1;
if (isNumber(configFile >> "cfgWeapons" >> _weapon >> "ACE_twistDirection")) then {
_twistDirection = getNumber(configFile >> "cfgWeapons" >> _weapon >> "ACE_twistDirection");
if (_twistDirection != -1 && _twistDirection != 0 && _twistDirection != 1) then {
_twistDirection = 1;
};
};
_transonicStabilityCoef = 0.5;
if (isNumber(configFile >> "cfgAmmo" >> _ammo >> "ACE_transonicStabilityCoef")) then {
_transonicStabilityCoef = getNumber(configFile >> "cfgAmmo" >> _ammo >> "ACE_transonicStabilityCoef");
};
_dragModel = 1;
_ballisticCoefficients = [];
_velocityBoundaries = [];
_atmosphereModel = "ICAO";
if (GVAR(AdvancedAirDragEnabled)) then {
if (isNumber(configFile >> "cfgAmmo" >> _ammo >> "ACE_dragModel")) then {
_dragModel = getNumber(configFile >> "cfgAmmo" >> _ammo >> "ACE_dragModel");
if (!(_dragModel in [1, 2, 5, 6, 7, 8])) then {
_dragModel = 1;
};
};
if (isArray(configFile >> "cfgAmmo" >> _ammo >> "ACE_ballisticCoefficients")) then {
_ballisticCoefficients = getArray(configFile >> "cfgAmmo" >> _ammo >> "ACE_ballisticCoefficients");
};
if (isArray(configFile >> "cfgAmmo" >> _ammo >> "ACE_velocityBoundaries")) then {
_velocityBoundaries = getArray(configFile >> "cfgAmmo" >> _ammo >> "ACE_velocityBoundaries");
};
if (isText(configFile >> "cfgAmmo" >> _ammo >> "ACE_standardAtmosphere")) then {
_atmosphereModel = getText(configFile >> "cfgAmmo" >> _ammo >> "ACE_standardAtmosphere");
};
};
#ifdef USE_ADVANCEDBALLISTICS_DLL
GVAR(currentbulletID) = (GVAR(currentbulletID) + 1) % 10000;
"ace_advanced_ballistics" callExtension format["new:%1:%2:%3:%4:%5:%6:%7:%8:%9:%10:%11:%12:%13:%14:%15:%16:%17:%18", GVAR(currentbulletID), _airFriction, _ballisticCoefficients, _velocityBoundaries, _atmosphereModel, _dragModel, _stabilityFactor, _twistDirection, _muzzleVelocity, _transonicStabilityCoef, getPosASL _bullet, EGVAR(weather,Latitude), EGVAR(weather,currentTemperature), EGVAR(weather,Altitude), EGVAR(weather,currentHumidity), overcast, floor(time), time - floor(time)];
[{
private ["_index", "_bullet", "_caliber", "_bulletTraceVisible", "_bulletVelocity", "_bulletPosition"];
EXPLODE_4_PVT(_this select 0,_bullet,_caliber,_bulletTraceVisible,_index);
_bulletVelocity = velocity _bullet;
_bulletPosition = getPosASL _bullet;
_bulletSpeed = vectorMagnitude _bulletVelocity;
if (!alive _bullet || _bulletSpeed < 100) exitWith {
[_this select 1] call cba_fnc_removePerFrameHandler;
};
if (_bulletTraceVisible && _bulletSpeed > 600) then {
drop ["\A3\data_f\ParticleEffects\Universal\Refract","","Billboard",1,0.1,getPos _bullet,[0,0,0],0,1.275,1,0,[0.4*_caliber,0.2*_caliber],[[0,0,0,0.6],[0,0,0,0.4]],[1,0],0,0,"","",""];
};
call compile ("ace_advanced_ballistics" callExtension format["simulate:%1:%2:%3:%4:%5:%6:%7", _index, _bulletVelocity, _bulletPosition, ACE_wind, ASLToATL(_bulletPosition) select 2, floor(time), time - floor(time)]);
}, GVAR(simulationInterval), [_bullet, _caliber, _bulletTraceVisible, GVAR(currentbulletID)]] call CBA_fnc_addPerFrameHandler;
#else
_index = count GVAR(bulletDatabase);
if (count GVAR(bulletDatabaseFreeIndices) > 0) then {
_index = GVAR(bulletDatabaseFreeIndices) select 0;
GVAR(bulletDatabaseFreeIndices) = GVAR(bulletDatabaseFreeIndices) - [_index];
};
GVAR(bulletDatabase) set[_index, [_bullet, _caliber, _airFriction, _muzzleVelocity, _stabilityFactor, _transonicStabilityCoef, _twistDirection, _unit, _bulletTraceVisible, _ballisticCoefficients, _velocityBoundaries, _atmosphereModel, _dragModel, _index]];
GVAR(bulletDatabaseStartTime) set[_index, time];
GVAR(bulletDatabaseSpeed) set[_index, 0];
GVAR(bulletDatabaseFrames) set[_index, 1];
GVAR(bulletDatabaseLastFrame) set[_index, time];
GVAR(bulletDatabaseHDeflect) set[_index, 0];
GVAR(bulletDatabaseSpinDrift) set[_index, 0];
if ((GVAR(bulletDatabaseOccupiedIndices) pushBack _index) == 0) then {
[{
private ["_bulletDatabaseEntry", "_bullet", "_caliber", "_muzzleVelocity", "_frames", "_speed", "_airFriction", "_airFrictionRef", "_dragModel", "_atmosphereModel", "_ballisticCoefficient", "_ballisticCoefficients", "_velocityBoundaries", "_airDensity", "_stabilityFactor", "_transonicStabilityCoef", "_twistDirection", "_unit", "_bulletTraceVisible", "_index", "_temperature", "_humidity", "_deltaT", "_TOF", "_bulletPosition", "_bulletVelocity", "_bulletSpeed", "_trueVelocity", "_trueSpeed", "_bulletSpeedAvg", "_wind", "_drag", "_dragRef", "_vect", "_accel", "_accelRef", "_centripetalAccel", "_pressure", "_pressureDeviation", "_windSourceObstacle", "_windSourceTerrain", "_height", "_roughnessLength", "_bulletDir", "_horizontalDeflection", "_horizontalDeflectionPartial", "_spinDrift", "_spinDriftPartial"];
{
_bulletDatabaseEntry = (GVAR(bulletDatabase) select _x);
if (!alive (_bulletDatabaseEntry select 0)) then {
_index = _bulletDatabaseEntry select 13;
GVAR(bulletDatabaseOccupiedIndices) = GVAR(bulletDatabaseOccupiedIndices) - [_index];
GVAR(bulletDatabaseFreeIndices) pushBack _index;
};
true
} count GVAR(bulletDatabaseOccupiedIndices);
if (count GVAR(bulletDatabaseOccupiedIndices) == 0) exitWith {
GVAR(bulletDatabase) = [];
GVAR(bulletDatabaseStartTime) = [];
GVAR(bulletDatabaseSpeed) = [];
GVAR(bulletDatabaseFrames) = [];
GVAR(bulletDatabaseLastFrame) = [];
GVAR(bulletDatabaseHDeflect) = [];
GVAR(bulletDatabaseSpinDrift) = [];
GVAR(bulletDatabaseOccupiedIndices) = [];
GVAR(bulletDatabaseFreeIndices) = [];
[_this select 1] call cba_fnc_removePerFrameHandler;
};
{
_bulletDatabaseEntry = GVAR(bulletDatabase) select _x;
_bullet = _bulletDatabaseEntry select 0;
_caliber = _bulletDatabaseEntry select 1;
_airFriction = _bulletDatabaseEntry select 2;
_muzzleVelocity = _bulletDatabaseEntry select 3;
_stabilityFactor = _bulletDatabaseEntry select 4;
_transonicStabilityCoef = _bulletDatabaseEntry select 5;
_twistDirection = _bulletDatabaseEntry select 6;
_unit = _bulletDatabaseEntry select 7;
_bulletTraceVisible = _bulletDatabaseEntry select 8;
_ballisticCoefficients = _bulletDatabaseEntry select 9;
_velocityBoundaries = _bulletDatabaseEntry select 10;
_atmosphereModel = _bulletDatabaseEntry select 11;
_dragModel = _bulletDatabaseEntry select 12;
_index = _bulletDatabaseEntry select 13;
_TOF = time - (GVAR(bulletDatabaseStartTime) select _index);
_bulletVelocity = velocity _bullet;
_bulletPosition = getPosASL _bullet;
_bulletSpeed = vectorMagnitude _bulletVelocity;
_bulletDir = (_bulletVelocity select 0) atan2 (_bulletVelocity select 1);
_speed = (GVAR(bulletDatabaseSpeed) select _index);
GVAR(bulletDatabaseSpeed) set[_index, _speed + _bulletSpeed];
_frames = (GVAR(bulletDatabaseFrames) select _index);
GVAR(bulletDatabaseFrames) set[_index, _frames + 1];
_bulletSpeedAvg = (_speed / _frames);
if ((GVAR(SimulationPrecision) < 2) || {_frames % GVAR(SimulationPrecision) == _index % GVAR(SimulationPrecision)}) then {
_deltaT = time - (GVAR(bulletDatabaseLastFrame) select _index);
GVAR(bulletDatabaseLastFrame) set[_index, time];
_trueVelocity = _bulletVelocity;
_trueSpeed = _bulletSpeed;
_wind = [0, 0, 0];
if (GVAR(WindEnabled) && (vectorMagnitude ACE_wind) > 0) then {
_windSourceObstacle = _bulletPosition vectorDiff ((vectorNormalized ACE_wind) vectorMultiply 10);
_windSourceTerrain = _bulletPosition vectorDiff ((vectorNormalized ACE_wind) vectorMultiply 100);
if (!(lineIntersects [_bulletPosition, _windSourceObstacle]) && !(terrainIntersectASL [_bulletPosition, _windSourceTerrain])) then {
_wind = ACE_wind;
_height = ASLToATL(_bulletPosition) select 2;
_height = 0 max _height min 20;
if (_height < 20) then {
_roughnessLength = _bulletPosition call FUNC(calculateRoughnessLength);
_wind = _wind vectorMultiply (ln(_height / _roughnessLength) / ln(20 / _roughnessLength));
};
_trueVelocity = _bulletVelocity vectorDiff _wind;
_trueSpeed = vectorMagnitude _trueVelocity;
};
};
_airFrictionRef = _airFriction;
if (GVAR(AdvancedAirDragEnabled) && (count _ballisticCoefficients) == (count _velocityBoundaries) + 1) then {
_dragRef = _deltaT * _airFrictionRef * _bulletSpeed * _bulletSpeed;
_accelRef = (vectorNormalized _bulletVelocity) vectorMultiply (_dragRef);
_bulletVelocity = _bulletVelocity vectorDiff _accelRef;
_ballisticCoefficient = (_ballisticCoefficients select 0);
for "_i" from (count _velocityBoundaries) - 1 to 0 step -1 do {
if (_bulletSpeed < (_velocityBoundaries select _i)) exitWith {
_ballisticCoefficient = (_ballisticCoefficients select (_i + 1));
};
};
if (GVAR(AtmosphericDensitySimulationEnabled)) then {
_pressure = (_bulletPosition select 2) call EFUNC(weather,calculateBarometricPressure);
_temperature = GET_TEMPERATURE_AT_HEIGHT(_bulletPosition select 2);
_humidity = EGVAR(weather,currentHumidity);
_airDensity = STD_AIR_DENSITY_ICAO;
if (_humidity > 0) then {
private ["_pSat", "_vaporPressure", "_partialPressure"];
// Saturation vapor pressure calculated according to: http://wahiduddin.net/calc/density_algorithms.htm
_pSat = 6.1078 * 10 ^ ((7.5 * _temperature) / (_temperature + 237.3));
_vaporPressure = _humidity * _pSat;
_partialPressure = (_pressure * 100)- _vaporPressure;
_airDensity = (_partialPressure * DRY_AIR_MOLAR_MASS + _vaporPressure * WATER_VAPOR_MOLAR_MASS) / (UNIVERSAL_GAS_CONSTANT * KELVIN(_temperature));
} else {
_airDensity = (_pressure * 100) / (SPECIFIC_GAS_CONSTANT_DRY_AIR * KELVIN(_temperature));
};
if (_atmosphereModel == "ICAO") then {
_ballisticCoefficient = (STD_AIR_DENSITY_ICAO / _airDensity) * _ballisticCoefficient;
} else {
_ballisticCoefficient = (STD_AIR_DENSITY_ASM / _airDensity) * _ballisticCoefficient;
};
};
_drag = _deltaT * ([_dragModel, _ballisticCoefficient, _trueSpeed] call FUNC(calculateRetardation));
_accel = (vectorNormalized _trueVelocity) vectorMultiply (_drag);
_bulletVelocity = _bulletVelocity vectorDiff _accel;
} else {
if (GVAR(AtmosphericDensitySimulationEnabled)) then {
_pressureDeviation = (_bulletPosition select 2) call EFUNC(weather,calculateBarometricPressure) - 1013.25;
_temperature = GET_TEMPERATURE_AT_HEIGHT(_bulletPosition select 2);
_humidity = EGVAR(weather,currentHumidity);
_airFriction = _airFriction + ((_temperature - 15) * 0.0000015 + _humidity * 0.0000040 + _pressureDeviation * -0.0000009);
};
if (_airFriction != _airFrictionRef || vectorMagnitude _wind > 0) then {
_dragRef = _deltaT * _airFrictionRef * _bulletSpeed * _bulletSpeed;
_accelRef = (vectorNormalized _bulletVelocity) vectorMultiply (_dragRef);
_bulletVelocity = _bulletVelocity vectorDiff _accelRef;
_drag = _deltaT * _airFriction * _trueSpeed * _trueSpeed;
_accel = (vectorNormalized _trueVelocity) vectorMultiply (_drag);
_bulletVelocity = _bulletVelocity vectorAdd _accel;
};
};
if (GVAR(CoriolisEnabled) && _bulletSpeedAvg > 0) then {
_horizontalDeflection = 0.0000729 * (_unit distanceSqr _bullet) * sin(EGVAR(weather,Latitude)) / _bulletSpeedAvg;
_horizontalDeflectionPartial = _horizontalDeflection - (GVAR(bulletDatabaseHDeflect) select _index);
GVAR(bulletDatabaseHDeflect) set[_index, _horizontalDeflection];
_vect = [sin(_bulletDir + 90) * _horizontalDeflectionPartial, cos(_bulletDir + 90) * _horizontalDeflectionPartial, 0];
_bulletPosition = _bulletPosition vectorAdd _vect;
};
/*
// Negligible effect on the trajectory
if (GVAR(EoetvoesEnabled)) then {
_centripetalAccel = 2 * 0.0000729 * (_muzzleVelocity / -32.2) * cos(EGVAR(weather,Latitude)) * sin(_bulletDir);
_accel = [0, 0, -(_centripetalAccel * _deltaT)];
_bulletVelocity = _bulletVelocity vectorAdd _accel;
};
//*/
if (GVAR(SpinDriftEnabled)) then {
_spinDrift = _twistDirection * 0.0254 * 1.25 * (_stabilityFactor + 1.2) * _TOF ^ 1.83;
_spinDriftPartial = _spinDrift - (GVAR(bulletDatabaseSpinDrift) select _index);
GVAR(bulletDatabaseSpinDrift) set[_index, _spinDrift];
_vect = [sin(_bulletDir + 90) * _spinDriftPartial, cos(_bulletDir + 90) * _spinDriftPartial, 0];
_bulletPosition = _bulletPosition vectorAdd _vect;
};
};
if (GVAR(TransonicRegionEnabled) && _transonicStabilityCoef < 1) then {
if (_bulletSpeed < 345 && _bulletSpeedAvg > 340 && _bulletSpeed > 335) then {
_accel = [(random 0.8) - 0.4, (random 0.8) - 0.4, (random 0.8) - 0.4];
_accel = _accel vectorMultiply (1 - _transonicStabilityCoef);
_bulletVelocity = _bulletVelocity vectorAdd _accel;
};
};
if (_bulletTraceVisible && _bulletSpeed > 600 && _bullet distanceSqr _unit > 400) then {
drop ["\A3\data_f\ParticleEffects\Universal\Refract","","Billboard",1,0.1,getPos _bullet,[0,0,0],0,1.275,1,0,[0.4*_caliber,0.2*_caliber],[[0,0,0,0.6],[0,0,0,0.4]],[1,0],0,0,"","",""];
};
_bullet setVelocity _bulletVelocity;
_bullet setPosASL _bulletPosition;
true
} count GVAR(bulletDatabaseOccupiedIndices);
}, GVAR(simulationInterval), []] call CBA_fnc_addPerFrameHandler;
};
#endif
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