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53 lines
2.1 KiB
Plaintext
53 lines
2.1 KiB
Plaintext
#include "script_component.hpp"
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/*
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* Author: commy2 and esteldunedain
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* Calculate the distance to the first intersection of a line
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*
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* Arguments:
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* 0: Pos ASL of origin <ARRAY>
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* 1: Direction <ARRAY>
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* 2: Max distance to search <NUMBER>
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* 3: Shooter <OBJECT>
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*
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* Return Value:
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* Distance to intersection (999 if distance is greater than max) <NUMBER>
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*
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* Example:
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* [[1823.41,5729.05,6.66627], [-0.953255,0.109689,-0.281554], 15, ace_player] call ace_overpressure_fnc_getDistance
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*
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* Public: No
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*/
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params ["_posASL", "_direction", "_maxDistance", "_shooter"];
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TRACE_4("params",_posASL,_direction,_maxDistance, _shooter);
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private _intersections = lineIntersectsSurfaces [_posASL, _posASL vectorAdd (_direction vectorMultiply _maxDistance), _shooter, objNull, true, 99];
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TRACE_1("lineIntersectsSurfaces",_intersections);
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private _distance = 999;
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{
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_x params ["_intersectPosASL", "_surfaceNormal", "_intersectObject"];
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TRACE_3("Intersect",_intersectPosASL,_surfaceNormal,_intersectObject);
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//Hit something solid that can reflect - (Static covers Building) [Need to manually filter out _shoot for FFV shots]
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if ((isNull _intersectObject) || {(_intersectObject != _shooter) && {(_intersectObject isKindOf "Static") || {_intersectObject isKindOf "AllVehicles"}}}) exitWith {
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_distance = _posASL vectorDistance _intersectPosASL;
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TRACE_3("hit solid object",_distance,_intersectObject,typeOf _intersectObject);
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if (isNull _intersectObject) then { //Terrain:
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// Calculate the angle between the terrain and the back blast direction
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private _angle = 90 - acos (- (_surfaceNormal vectorDotProduct _direction));
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TRACE_3("Terrain Intersect",_surfaceNormal,_direction,_angle);
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// Angles is below 25deg, no backblast at all
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if (_angle < 25) exitWith {_distance = 999};
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// Angles is below 45deg the distance is increased according to the difference
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if (_angle < 45) exitWith {_distance = _distance * (5 - 4 * sqrt ((_angle - 25)/20))};
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// Angles above 45degcreate full backblast
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};
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};
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} forEach _intersections;
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_distance
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