mirror of
https://github.com/acemod/ACE3.git
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75 lines
2.6 KiB
Plaintext
75 lines
2.6 KiB
Plaintext
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/*
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* Authors: KoffeinFlummi, esteldunedain
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*
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* Changes the bullet trajectory depending on wind, density and temperature.
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*
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* Arguments:
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* Fired EH
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*
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* Return Value:
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* none
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*/
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private ["_unit", "_ammoType", "_round", "_dispersion", "_additionalVel"];
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_unit = _this select 0;
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_ammoType = _this select 4;
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_round = _this select 5;
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if !(local _unit) exitWith {};
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if !([_unit] call AGM_Core_fnc_isPlayer) exitWith {};
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if (_round isKindOf "GrenadeHand") exitWith {};
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// Additional dispersion
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_dispersion = getNumber (configFile >> "CfgAmmo" >> _ammoType >> "AGM_Bullet_Dispersion");
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// Powder temp effect
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_additionalVel = (vectorMagnitude (velocity _round)) * ((((AGM_Wind_currentTemperature + 273.13) / 288.13 - 1) / 2.5 + 1 ) - 1);
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[_round, ((random 2) - 1) * _dispersion, ((random 2) - 1) * _dispersion, _additionalVel] call AGM_Core_fnc_changeProjectileDirection;
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_this spawn {
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_ammoType = _this select 4;
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_round = _this select 5;
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_airFriction = getNumber (configFile >> "CfgAmmo" >> _ammoType >> "airFriction");
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_simulation = getText (configFile >> "CfgAmmo" >> _ammoType >> "simulation");
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_time = time;
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if (_airFriction >= 0 || {_simulation == "shotMissile"} || {_simulation == "shotRocket"}) then {
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// Do not correct for airDensity if airFriction is not logical on the first place
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_airFriction = -0.0007;
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while {!isNull _round and alive _round} do {
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_deltaTime = time - _time;
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_velocity = velocity _round;
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_velocityNew = _velocity
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// Calculate approximate wind drag
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vectorDiff (wind vectorMultiply (vectorMagnitude (_velocity vectorDiff wind) * AGM_Wind_currentRelativeDensity * _airFriction * _deltaTime));
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_round setVelocity _velocityNew;
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_time = time;
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sleep 0.05;
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};
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} else {
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// Calculate total drag based on aparent wind
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while {!isNull _round and alive _round} do {
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_deltaTime = time - _time;
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// See https://github.com/KoffeinFlummi/AGM/issues/996 and See https://github.com/KoffeinFlummi/AGM/issues/1732
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_velocity = velocity _round;
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_aparentWind = wind vectorDiff _velocity;
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_velocityNew = (_velocity
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// Undo engine's drag calculation (airFriction * V^2 * dt)
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vectorDiff (_velocity vectorMultiply (vectorMagnitude _velocity * _airFriction * _deltaTime)))
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// Calculate total drag based on aparent wind
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vectorDiff (_aparentWind vectorMultiply (vectorMagnitude _aparentWind * AGM_Wind_currentRelativeDensity * _airFriction * _deltaTime));
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_round setVelocity _velocityNew;
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_time = time;
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sleep 0.05;
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};
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};
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};
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