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https://github.com/EpochModTeam/DayZ-Epoch.git
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40 lines
1.4 KiB
Plaintext
40 lines
1.4 KiB
Plaintext
// This function checks to see if a potential zombie spawn position is in the field of view of near players.
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local _zASL = +(_this select 0); // zombie position ATL
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if (count _zASL < 3) exitWith {
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//diag_log format["%1::fn_fieldOfView illegal pos %2", __FILE__, _zASL];
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false
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};
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_zASL set [2, ((ATLtoASL _zASL) select 2) + 1.7]; // approximate eyePos of zombie
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local _isOk = true;
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local _fov = _this select 1; // 30 // players half field of view
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local _safeDistance = _this select 2; // 10 // minimum distance
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local _farDistance = _this select 3; // 200 // ignore anything beyond this distance
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scopeName "exit";
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{
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local _pASL = getPosASL _x; // player position ASL
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local _dist = _pASL distance _zASL;
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if (_dist < _safeDistance) exitWith {_isOk = false}; // zombie is too close
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if (_dist < _farDistance) then { // zombie is within range
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local _dir = eyeDirection _x; // only x,y coords are useful here
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_dir = (((_dir select 0) atan2 (_dir select 1)) + 360) % 360;; // convert vector to CW direction
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if ([_pASL, _dir, _fov * 2, _zASL] call fnc_inAngleSector) then { // zombie within player's FOV
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local _eye = eyePos _x;
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if (!(lineIntersects [_eye, _zASL]) && {!(terrainIntersectASL [_eye, _zASL])}) then { // clear line of sight from player to zombie
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_isOk = false;
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breakTo "exit";
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};
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};
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};
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} count playableUnits;
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_isOk
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