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