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136 lines
8.1 KiB
Plaintext
136 lines
8.1 KiB
Plaintext
#include "script_component.hpp"
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/*
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* Author: Ruthberg
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*
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* Calculates the retardation of the bullet
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*
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* Arguments:
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* 0: drag model - integer 1-7 <NUMBER>
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* 1: drag coefficient - bc <NUMBER>
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* 2: velocity - m/s <NUMBER>
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*
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* Return Value:
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* retardation - m/(s^2) <NUMBER>
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*
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* Example:
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* [5, 20, 10] call ace_advanced_ballistics_fnc_calculateRetardation
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*
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* Public: No
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*/
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// Source: GNU Exterior Ballistics
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private ["_A", "_M"];
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params ["_dragModel", "_dragCoefficient", "_velocity"];
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_velocity = _velocity * 3.2808399;
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switch _dragModel do {
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case 1: {
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call {
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if (_velocity > 4230) exitWith { _A = 0.0001477404177730177; _M = 1.9565; };
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if (_velocity > 3680) exitWith { _A = 0.0001920339268755614; _M = 1.925; };
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if (_velocity > 3450) exitWith { _A = 0.0002894751026819746; _M = 1.875; };
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if (_velocity > 3295) exitWith { _A = 0.0004349905111115636; _M = 1.825; };
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if (_velocity > 3130) exitWith { _A = 0.0006520421871892662; _M = 1.775; };
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if (_velocity > 2960) exitWith { _A = 0.0009748073694078696; _M = 1.725; };
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if (_velocity > 2830) exitWith { _A = 0.001453721560187286; _M = 1.675; };
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if (_velocity > 2680) exitWith { _A = 0.002162887202930376; _M = 1.625; };
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if (_velocity > 2460) exitWith { _A = 0.003209559783129881; _M = 1.575; };
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if (_velocity > 2225) exitWith { _A = 0.003904368218691249; _M = 1.55; };
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if (_velocity > 2015) exitWith { _A = 0.003222942271262336; _M = 1.575; };
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if (_velocity > 1890) exitWith { _A = 0.002203329542297809; _M = 1.625; };
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if (_velocity > 1810) exitWith { _A = 0.001511001028891904; _M = 1.675; };
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if (_velocity > 1730) exitWith { _A = 0.0008609957592468259; _M = 1.75; };
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if (_velocity > 1595) exitWith { _A = 0.0004086146797305117; _M = 1.85; };
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if (_velocity > 1520) exitWith { _A = 0.0001954473210037398; _M = 1.95; };
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if (_velocity > 1420) exitWith { _A = 0.00005431896266462351; _M = 2.125; };
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if (_velocity > 1360) exitWith { _A = 0.000008847742581674416; _M = 2.375; };
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if (_velocity > 1315) exitWith { _A = 0.000001456922328720298; _M = 2.625; };
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if (_velocity > 1280) exitWith { _A = 0.0000002419485191895565; _M = 2.875; };
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if (_velocity > 1220) exitWith { _A = 0.00000001657956321067612; _M = 3.25; };
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if (_velocity > 1185) exitWith { _A = 0.0000000004745469537157371; _M = 3.75; };
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if (_velocity > 1150) exitWith { _A = 0.00000000001379746590025088; _M = 4.25; };
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if (_velocity > 1100) exitWith { _A = 0.0000000000004070157961147882; _M = 4.75; };
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if (_velocity > 1060) exitWith { _A = 0.00000000000002938236954847331; _M = 5.125; };
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if (_velocity > 1025) exitWith { _A = 0.00000000000001228597370774746; _M = 5.25; };
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if (_velocity > 980) exitWith { _A = 0.00000000000002916938264100495; _M = 5.125; };
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if (_velocity > 945) exitWith { _A = 0.0000000000003855099424807451; _M = 4.75; };
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if (_velocity > 905) exitWith { _A = 0.00000000001185097045689854; _M = 4.25; };
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if (_velocity > 860) exitWith { _A = 0.0000000003566129470974951; _M = 3.75; };
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if (_velocity > 810) exitWith { _A = 0.00000001045513263966272; _M = 3.25; };
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if (_velocity > 780) exitWith { _A = 0.0000001291159200846216; _M = 2.875; };
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if (_velocity > 750) exitWith { _A = 0.0000006824429329105383; _M = 2.625; };
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if (_velocity > 700) exitWith { _A = 0.000003569169672385163; _M = 2.375; };
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if (_velocity > 640) exitWith { _A = 0.00001839015095899579; _M = 2.125; };
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if (_velocity > 600) exitWith { _A = 0.00005711174688734240; _M = 1.950; };
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if (_velocity > 550) exitWith { _A = 0.00009226557091973427; _M = 1.875; };
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if (_velocity > 250) exitWith { _A = 0.00009337991957131389; _M = 1.875; };
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if (_velocity > 100) exitWith { _A = 0.00007225247327590413; _M = 1.925; };
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if (_velocity > 65) exitWith { _A = 0.00005792684957074546; _M = 1.975; };
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if (_velocity > 0) exitWith { _A = 0.00005206214107320588; _M = 2.000; };
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};
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};
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case 2: {
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call {
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if (_velocity > 1674) exitWith { _A = 0.0079470052136733; _M = 1.36999902851493; };
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if (_velocity > 1172) exitWith { _A = 0.00100419763721974; _M = 1.65392237010294; };
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if (_velocity > 1060) exitWith { _A = 0.0000000000000000000000715571228255369; _M = 7.91913562392361; };
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if (_velocity > 949) exitWith { _A = 0.000000000139589807205091; _M = 3.81439537623717; };
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if (_velocity > 670) exitWith { _A = 0.000234364342818625; _M = 1.71869536324748; };
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if (_velocity > 335) exitWith { _A = 0.000177962438921838; _M = 1.76877550388679; };
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if (_velocity > 0) exitWith { _A = 0.0000518033561289704; _M = 1.98160270524632; };
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};
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};
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case 5: {
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call {
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if (_velocity > 1730) exitWith { _A = 0.00724854775171929; _M = 1.41538574492812; };
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if (_velocity > 1228) exitWith { _A = 0.0000350563361516117; _M = 2.13077307854948; };
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if (_velocity > 1116) exitWith { _A = 0.000000000000184029481181151; _M = 4.81927320350395; };
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if (_velocity > 1004) exitWith { _A = 0.000000000000000000000134713064017409; _M = 7.8100555281422; };
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if (_velocity > 837) exitWith { _A = 0.000000103965974081168; _M = 2.84204791809926; };
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if (_velocity > 335) exitWith { _A = 0.0001093015938698234; _M = 1.81096361579504; };
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if (_velocity > 0) exitWith { _A = 0.0000351963178524273; _M = 2.00477856801111; };
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};
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};
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case 6: {
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call {
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if (_velocity > 3236) exitWith { _A = 0.0455384883480781; _M = 1.15997674041274; };
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if (_velocity > 2065) exitWith { _A = 0.07167261849653769; _M = 1.10704436538885; };
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if (_velocity > 1311) exitWith { _A = 0.00166676386084348; _M = 1.60085100195952; };
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if (_velocity > 1144) exitWith { _A = 0.000000101482730119215; _M = 2.9569674731838; };
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if (_velocity > 1004) exitWith { _A = 0.00000000000000000431542773103552; _M = 6.34106317069757; };
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if (_velocity > 670) exitWith { _A = 0.0000204835650496866; _M = 2.11688446325998; };
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if (_velocity > 0) exitWith { _A = 0.0000750912466084823; _M = 1.92031057847052; };
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};
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};
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case 7: {
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call {
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if (_velocity > 4200) exitWith { _A = 0.00000000129081656775919; _M = 3.24121295355962; };
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if (_velocity > 3000) exitWith { _A = 0.0171422231434847; _M = 1.27907168025204; };
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if (_velocity > 1470) exitWith { _A = 0.00233355948302505; _M = 1.52693913274526; };
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if (_velocity > 1260) exitWith { _A = 0.000797592111627665; _M = 1.67688974440324; };
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if (_velocity > 1110) exitWith { _A = 0.00000000000571086414289273; _M = 4.3212826264889; };
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if (_velocity > 960) exitWith { _A = 0.0000000000000000302865108244904; _M = 5.99074203776707; };
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if (_velocity > 670) exitWith { _A = 0.00000752285155782535; _M = 2.1738019851075; };
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if (_velocity > 540) exitWith { _A = 0.0000131766281225189; _M = 2.08774690257991; };
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if (_velocity > 0) exitWith { _A = 0.0000134504843776525; _M = 2.08702306738884; };
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};
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};
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case 8: {
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call {
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if (_velocity > 3571) exitWith { _A = 0.0112263766252305; _M = 1.33207346655961; };
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if (_velocity > 1841) exitWith { _A = 0.0167252613732636; _M = 1.28662041261785; };
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if (_velocity > 1120) exitWith { _A = 0.00220172456619625; _M = 1.55636358091189; };
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if (_velocity > 1088) exitWith { _A = 0.00000000000000020538037167098; _M = 5.80410776994789; };
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if (_velocity > 976) exitWith { _A = 0.00000000000592182174254121; _M = 4.29275576134191; };
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if (_velocity > 0) exitWith { _A = 0.000043917343795117; _M = 1.99978116283334; };
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};
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};
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};
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if (!isNil "_A" && !isNil "_M" && _velocity > 0 && _velocity < 10000) then {
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(_A * (_velocity ^ _M) / _dragCoefficient) / 3.2808399
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} else {
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0
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};
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