mirror of
https://github.com/acemod/ACE3.git
synced 2024-08-30 18:23:18 +00:00
67 lines
2.0 KiB
Plaintext
67 lines
2.0 KiB
Plaintext
/*
|
|
* Author: commy2 and esteldunedain
|
|
*
|
|
* Calculate the distance to the first intersection of a line
|
|
*
|
|
* Argument:
|
|
* 0: Pos ASL of origin (Array)
|
|
* 1: Direction (Array)
|
|
* 2: Max distance to search (Number)
|
|
*
|
|
* Return value:
|
|
* Distance to intersection (+- 0.1 m)
|
|
*/
|
|
#include "script_component.hpp"
|
|
|
|
EXPLODE_3_PVT(_this,_posASL,_direction,_maxDistance);
|
|
|
|
private ["_distance", "_interval", "_line", "_intersections", "_terrainIntersect", "_lastTerrainIntersect"];
|
|
|
|
_distance = _maxDistance;
|
|
_interval = _distance;
|
|
_line = [_posASL, []];
|
|
_terrainIntersect = false;
|
|
_lastTerrainIntersect = false;
|
|
|
|
while {
|
|
_interval > 0.1
|
|
} do {
|
|
_lastTerrainIntersect = _terrainIntersect;
|
|
_interval = _interval / 2;
|
|
|
|
_line set [1, _posASL vectorAdd (_direction vectorMultiply _distance)];
|
|
|
|
_intersections = {
|
|
_x isKindOf "Static" || {_x isKindOf "AllVehicles"}
|
|
} count (lineIntersectsWith _line);
|
|
|
|
_terrainIntersect = if (_intersections > 0) then {
|
|
false
|
|
} else {
|
|
terrainIntersectASL _line
|
|
};
|
|
|
|
_distance = _distance + ([1, -1] select (_intersections > 0 || _terrainIntersect)) * _interval;
|
|
|
|
if (_distance > _maxDistance) exitWith {_distance = 999};
|
|
};
|
|
|
|
if (_distance > _maxDistance) exitWith {_distance};
|
|
|
|
// If the intersection was with the terrain, check slope
|
|
if (_terrainIntersect || _lastTerrainIntersect) exitWith {
|
|
private ["_slope","_angle"];
|
|
_slope = surfaceNormal (_posASL vectorAdd (_direction vectorMultiply _distance));
|
|
// Calculate the angle between the terrain and the back blast direction
|
|
_angle = 90 - acos (- (_slope vectorDotProduct _direction));
|
|
|
|
//systemChat format ["Angle: %1", _angle];
|
|
// Angles is below 25º, no backblast at all
|
|
if (_angle < 25) exitWith {_distance = 999};
|
|
// Angles is below 45º the distance is increased according to the difference
|
|
if (_angle < 45) exitWith {_distance = _distance * (5 - 4 * sqrt ((_angle - 25)/20))};
|
|
// Angles above 45º create full backblast
|
|
};
|
|
|
|
_distance
|