ACE3/addons/missileguidance/functions/fnc_attackProfile_JAV_DIR.sqf

#include "script_component.hpp"
/*
 * Author: jaynus / nou
 * Attack profile: Javelin Dir
 *
 * Arguments:
 * 0: Seeker Target PosASL <ARRAY>
 * 1: Guidance Arg Array <ARRAY>
 * 2: Attack Profile State <ARRAY>
 *
 * Return Value:
 * Missile Aim PosASL <ARRAY>
 *
 * Example:
 * [[1,2,3], [], []] call ace_missileguidance_fnc_attackProfile_JAV_DIR;
 *
 * Public: No
 */

#define STAGE_LAUNCH 1
#define STAGE_CLIMB 2
#define STAGE_COAST 3
#define STAGE_TERMINAL 4

params ["_seekerTargetPos", "_args", "_attackProfileStateParams"];
_args params ["_firedEH"];
_firedEH params ["_shooter","","","","","","_projectile"];

if (_seekerTargetPos isEqualTo [0,0,0]) exitWith {_seekerTargetPos};

if (_attackProfileStateParams isEqualTo []) then {
    _attackProfileStateParams set [0, STAGE_LAUNCH];
};

private _shooterPos = getPosASL _shooter;
private _projectilePos = getPosASL _projectile;

private _distanceToTarget = _projectilePos vectorDistance _seekerTargetPos;
private _distanceToShooter = _projectilePos vectorDistance _shooterPos;
private _distanceShooterToTarget = _shooterPos vectorDistance _seekerTargetPos;

TRACE_2("", _distanceToTarget, _distanceToShooter);

// Add height depending on distance for compensate
private _returnTargetPos = _seekerTargetPos;

switch (_attackProfileStateParams select 0) do {
    case STAGE_LAUNCH: {
        TRACE_1("STAGE_LAUNCH","");
        if (_distanceToShooter < 10) then {
            _returnTargetPos = _seekerTargetPos vectorAdd [0,0,_distanceToTarget*2];
        } else {
            _attackProfileStateParams set [0, STAGE_CLIMB];
        };
    };
    case STAGE_CLIMB: {
        TRACE_1("STAGE_CLIMB","");
       private _cruisAlt = 60 * (_distanceShooterToTarget/2000);

        if ( ((ASLToAGL _projectilePos) select 2) - ((ASLToAGL _seekerTargetPos) select 2) >= _cruisAlt) then {
            _attackProfileStateParams set [0, STAGE_TERMINAL];
        } else {
             _returnTargetPos = _seekerTargetPos vectorAdd [0,0,_distanceToTarget*1.5];
        };
    };
    case STAGE_TERMINAL: {
        TRACE_1("STAGE_TERMINAL","");
        _returnTargetPos = _seekerTargetPos;
    };
};

TRACE_1("Adjusted target position", _returnTargetPos);
_returnTargetPos;