mirror of
https://github.com/acemod/ACE3.git
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95 lines
3.6 KiB
Plaintext
95 lines
3.6 KiB
Plaintext
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/*
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* Author: PabstMirror
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* Handles the top down attack seeker for missile guidance.
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* Has a very short range (IR/Magnetic?) seeker that will trigger the shaped charge midair above the target.
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*
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* Arguments:
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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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* Seeker Pos <ARRAY>
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*
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* Example:
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* [] call ace_nlaw_fnc_seeker
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*
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* Public: No
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*/
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// #define DEBUG_MODE_FULL
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#include "script_component.hpp"
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params ["", "_args", "_seekerStateParams"];
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_args params ["_firedEH", "_launchParams", "", "_seekerParams", "_stateParams"];
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_firedEH params ["","","","","","","_projectile"];
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_launchParams params ["", "_targetLaunchParams", "", "_attackProfile"];
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_targetLaunchParams params ["", "", "_launchPos"];
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if (_attackProfile == QGVAR(directAttack)) exitWith {[0,0,0]};
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private _projPos = getPosASL _projectile;
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// Arm seeker after 20 meters
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if ((_projPos distance _launchPos) >= 20) then {
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scopeName "targetScan";
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BEGIN_COUNTER(targetScan);
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if (_seekerStateParams isEqualTo []) then {
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TRACE_2("Seeker Armed",_projPos distance _launchPos,diag_fps);
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_seekerStateParams set [0, _projPos]; // Set _lastPos to current position
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};
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_seekerStateParams params ["_lastPos", "_terminal"];
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if (_terminal) exitWith {};
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private _vectorDir = _lastPos vectorFromTo _projPos;
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private _frameDistance = _lastPos vectorDistance _projPos;
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// Distance traveled depends on velocity and FPS - at 60fps it will be ~4m
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// Step size will effect accuracy and performance costs
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for "_stepSize" from 0 to _frameDistance step 0.5 do {
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// This represents a position that the missile was at between the last frame and now
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private _virtualPos = _lastPos vectorAdd (_vectorDir vectorMultiply _stepSize);
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#ifdef DRAW_NLAW_INFO
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drawLine3D [ASLtoAGL _virtualPos, ASLtoAGL (_virtualPos vectorAdd [0,0,-5]), [1,0,_stepSize/(_frameDistance max 0.1),1]];
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#endif
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// Limit scan to 5 meters directly down (shaped charge jet has a very limited range)
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private _res = lineIntersectsSurfaces [_virtualPos, (_virtualPos vectorAdd [0,0,-5]), _projectile];
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if (!(_res isEqualTo [])) then {
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(_res select 0) params ["_targetPos", "", "_target"];
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if ((_target isKindOf "Tank") || {_target isKindOf "Car"} || {_target isKindOf "Air"}) exitWith {
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TRACE_3("Firing shaped charge down",_target,_targetPos distance _virtualPos,_frameDistance);
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TRACE_2("",_target worldToModel (ASLtoAGL _virtualPos),boundingBoxReal _target);
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_virtualPos = _virtualPos vectorAdd (_vectorDir vectorMultiply 1.25);
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deleteVehicle _projectile;
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// Damage and effects of missile exploding (timeToLive is 0 so should happen next frame)
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private _explosion = "ACE_NLAW_Explosion" createVehicle _virtualPos;
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_explosion setPosASL _virtualPos;
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// Just damage from shaped charge
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private _shapedCharage = "ACE_NLAW_ShapedCharge" createVehicle _virtualPos;
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_shapedCharage setPosASL _virtualPos;
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_shapedCharage setVectorDirAndUp [[0,0,-1], [1,0,0]];
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_shapedCharage setVelocity [0,0,-300];
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_seekerStateParams set [1, true];
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END_COUNTER(targetScan);
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breakOut "targetScan";
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};
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};
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};
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_seekerStateParams set [0, _projPos];
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END_COUNTER(targetScan);
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};
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// Exploded, return dummy value
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if (_seekerStateParams param [1, false]) exitWith {
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[0,0,1]
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};
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// return:
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[0,0,0]
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