Fixes #11136

When merged this pull request will:

• Fix seeker LOS issues by filtering near-surface intersections that cause false obstructions during laser spot acquisition.

Details

lineIntersectsSurfaces often reports collisions on the outer surface of a vehicle or object, even when the laser spot is actually unobstructed.
This caused the seeker to incorrectly conclude that the spot was not visible.

To avoid this, intersections that are extremely close to the test target position are ignored:

_testIntersections = _testIntersections select {
    (_intersectPosASL vectorDistanceSqr _testPos) > 0.01
};

Notes

While this fix resolves the issue, I am not fully confident that this is the ideal or final approach.
I am not sure whether 0.01 is the correct value.

Additionally, during the initial ray generation for the laser hit point:

_distance = (_posASL vectorDistance _intersectPosASL) - 0.005;

fnc_shootRay.sqf:L42

it might be more appropriate to move the generated laser point slightly further back instead of filtering intersections.
Determining which method is more accurate and robust is not entirely clear, so expert review and feedback would be greatly appreciated.

Visual Demonstration

• Bug https://youtu.be/yzAUM3LvGcA

• Seeker LOS Check Fail Bug Fix Test Value 0.1 https://youtu.be/SGpFVMbf5Ek

• Seeker LOS Check Fail Bug Fix Test Value 0.01 https://youtu.be/s91oweIRLXg

• Seeker LOS Check Fail Bug Fix Test Value 0.001 https://youtu.be/9EEKgjx29JQ

• Image From Bug
  

• Image From Seeker LOS Check Fail Bug Fix Test Value 0.01
  

Testing Debug Code

Below is the code I used during debugging.
Please insert it right after the line I modified.

#ifdef DRAW_LASER_INFO
    drawLine3D [ASLToAGL _posASL, ASLToAGL _testPos, [1,0,0,0.8]];   
    {
        _x params ["_intersectPosASL", "_surfaceNormal", "_intersectObj", "_parentObject", "_selectionNames", "_pathToBisurf"];
        TRACE_1("",_intersectPosASL);
        drawIcon3D ["\A3\ui_f\data\map\vehicleicons\iconMan_ca.paa", [1,1,0,1], (ASLToAGL _intersectPosASL), 0.5, 0.5, 0, "seekerLOSBlock", 0.5, 0.025, "TahomaB"];
    } forEach _testIntersections;         
#endif

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