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79 lines
2.6 KiB
Plaintext
79 lines
2.6 KiB
Plaintext
#include "script_component.hpp"
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/*
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* Author: Brandon (TCVM)
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* Attack profile: JDAM
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* Glides until attack angle, and then dives in
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*
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* Arguments:
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* 0: Seeker Target PosASL <ARRAY>
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* 1: Guidance Arg Array <ARRAY>
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* 2: Seeker State <ARRAY>
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*
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* Return Value:
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* Missile Aim PosASL <ARRAY>
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*
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* Example:
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* [[1,2,3], [], []] call ace_missileguidance_fnc_attackProfile_jdam;
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*
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* Public: No
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*/
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params ["_seekerTargetPos", "_args", "_attackProfileStateParams", "_timestep"];
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_args params ["_firedEH", "", "_flightParams", "", "", "_targetData"];
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_firedEH params ["_shooter","","","","","","_projectile"];
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_attackProfileStateParams params ["_gpsData", "_initialProjectileHeight", "_terminal", "_lastAngleToTarget"];
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_gpsData params ["", "_impactAngle", "_attackDirection"];
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_targetData params ["_directionToTarget", "", "_distanceToTarget"];
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_flightParams params ["_pitchRate", "_yawRate"];
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if (_impactAngle <= 0) then {
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_impactAngle = 360; // immediate pitch over to attack
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};
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if (_attackDirection < 0) then {
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_attackDirection = direction _projectile;
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};
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private _targetPos = _seekerTargetPos;
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if !(_terminal) then {
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_targetPos = [
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_targetPos#0,
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_targetPos#1,
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(_seekerTargetPos select 2) + 500
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];
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private _projectilePos = getPosASLVisual _projectile;
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private _timeToGo = (_projectilePos distance _targetPos) / vectorMagnitude velocity _projectile;
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private _currentPitchTowardTarget = ((_projectilePos vectorFromTo _seekerTargetPos) call CBA_fnc_vect2polar) select 2;
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private _closingRate = if (_timestep != 0) then {
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(_currentPitchTowardTarget - _lastAngleToTarget) / _timestep;
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} else {
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0
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};
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_attackProfileStateParams set [3, _currentPitchTowardTarget];
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private _pitchTime = _pitchRate * _timeToGo;
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private _projectileElevation = ((vectorDir _projectile) call CBA_fnc_vect2polar) select 2;
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private _neededPitch = (_impactAngle + _projectileElevation + _closingRate);
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private _pitchOverETA = _timeToGo - ((_impactAngle + _projectileElevation) / _pitchRate);
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// TODO: look into PID controller and custom navigation type to ride the line? Same as SACLOS really
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private _atMinRotationAngle = _pitchTime <= _neededPitch;
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_attackProfileStateParams set [2, _atMinRotationAngle];
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if (GVAR(debug_drawGuidanceInfo)) then {
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_attackProfileName = format ["JDAM [Pitch Available - %1 Needed Pitch - %2 ETP - %3]", _pitchTime, _neededPitch, _pitchOverETA];
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};
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};
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if (GVAR(debug_drawGuidanceInfo)) then {
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private _desiredAngle = [5000, 180 + _attackDirection, _impactAngle] call CBA_fnc_polar2vect;
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private _targetPosAGL = ASLtoAGL _seekerTargetPos;
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drawLine3D [_targetPosAGL, _targetPosAGL vectorAdd _desiredAngle, [1, 1, 1, 1]];
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};
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_targetPos;
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