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42 lines
1.3 KiB
Plaintext
42 lines
1.3 KiB
Plaintext
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#include "script_component.hpp"
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/*
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* Author: Pterolatypus
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* Returns the image of a value on a linear piecewise function defined by given points
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* Force integer causes decimals to be rounded up or down by chance based on their decimal part, i.e. 2.7 has a 70% chance to return 3 and 30% to return 2
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*
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* Arguments:
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* 0: Input value <NUMBER>
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* 1: Function points, must be in descending order by X (input) value <ARRAY>
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* 2: Whether to force integer <BOOLEAN>
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*
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* ReturnValue:
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* Interpolated result <NUMBER>
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*
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* Example:
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* [0.2, [[1,0], [0.5,1], [0,0]]] call ace_medical_damage_fnc_interpolatePoints
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*
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* Public: No
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*/
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params ["_input", "_points", ["_randomRound", false]];
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if (count _points < 1) exitWith {
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//TODO: sensible default/error value
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0
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};
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if (count _points == 1) exitWith {_points select 0 select 1};
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private _output = 0;
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private _lower = _points findIf {(_x select 0) < _input};
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if (_lower == 0) exitWith {_points select 0 select 1};
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if (_lower == -1) exitWith {_points select (count _points - 1) select 1};
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private _upper = _points select (_lower-1);
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_lower = _points select _lower;
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_output = linearConversion [_lower select 0, _upper select 0, _input, _lower select 1, _upper select 1, true];
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if (_randomRound) then {
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// chance to round up is equal to the decimal part
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_output = ceil (_output - random 1);
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};
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_output //return
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