ACE3/addons/advanced_ballistics/functions/fnc_calculateAmmoTemperatureVelocityShift.sqf
ulteq 8bc77a7b88
Advanced Ballistics - Minor performance tweaks (#5790)
* Advanced Ballistics - Utilize 'linearConversion'

* Advanced Ballistics - Limit config value boundaries
2017-11-22 23:16:17 +01:00

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/*
* Author: Ruthberg
*
* Calculates the ammo temperature induced muzzle velocity shift
*
* Arguments:
* 0: muzzle velocity shift lookup table - m/s <ARRAY>
* 1: temperature - degrees celcius <NUMBER>
*
* Return Value:
* muzzle velocity shift - m/s <NUMBER>
*
* Example:
* [[], 5] call ace_advanced_ballistics_fnc_calcilateAmmoTemperatureVelocityShift
*
* Public: No
*/
#include "script_component.hpp"
params ["_muzzleVelocityShiftTable", "_temperature"];
// Check if muzzleVelocityShiftTable is less than 11 Entrys
if ((count _muzzleVelocityShiftTable) < 11) exitWith {0};
private _muzzleVelocityShiftTableUpperLimit = _muzzleVelocityShiftTable select 10;
if (isNil "_muzzleVelocityShiftTableUpperLimit") exitWith {0};
// Find exact data index required for given temperature
private _temperatureIndexFunction = 0 max ((_temperature + 15) / 5) min 10;
// Lower and upper data index used for interpolation
private _temperatureIndexA = floor(_temperatureIndexFunction);
private _temperatureIndexB = ceil(_temperatureIndexFunction);
linearConversion [_temperatureIndexA, _temperatureIndexB, _temperatureIndexFunction, _muzzleVelocityShiftTable select _temperatureIndexA, _muzzleVelocityShiftTable select _temperatureIndexB, true] // Return