mirror of
https://github.com/acemod/ACE3.git
synced 2024-08-30 18:23:18 +00:00
83 lines
2.5 KiB
Plaintext
83 lines
2.5 KiB
Plaintext
/*
|
|
* Author: KoffeinFlummi
|
|
* Calculates the angle offset necessary to hit the current target.
|
|
*
|
|
* Arguments:
|
|
* 0: distance to target in meters <NUMBER>
|
|
* 1: current angle of the turret <NUMBER>
|
|
* 2: maximum elevation of the turret <NUMBER>
|
|
* 3: initSpeed of the projectile <NUMBER>
|
|
* 4: airFriction of the projectile <NUMBER>
|
|
* 5: maximum timeToLive of the projectile <NUMBER>
|
|
* 6: simulationStep of the projectile <NUMBER>
|
|
*
|
|
* Return Value:
|
|
* offset from the current angle necessary to hit the target <NUMBER>
|
|
*
|
|
* Public: No
|
|
*/
|
|
#include "script_component.hpp"
|
|
|
|
#define PRECISION 0.1
|
|
|
|
params ["_distance", "_angleTarget", "_maxElev", "_initSpeed", "_airFriction", "_timeToLive", "_simulationStep"];
|
|
|
|
if (_simulationStep == 0) exitWith {_angleTarget};
|
|
|
|
private _fnc_traceBullet = {
|
|
params ["_distance", "_angleTarget", "_maxElev", "_initSpeed", "_airFriction", "_timeToLive", "_simulationStep", "_angle"];
|
|
|
|
_angle = _angle - _angleTarget;
|
|
_angleTarget = 0;
|
|
|
|
private _posTargetX = (cos _angleTarget) * _distance;
|
|
private _posTargetY = (sin _angleTarget) * _distance;
|
|
|
|
private _posX = 0;
|
|
private _posY = 0;
|
|
|
|
private _velocityX = (cos _angle) * _initSpeed;
|
|
private _velocityY = (sin _angle) * _initSpeed;
|
|
|
|
// trace the path of the bullet
|
|
for "_i" from 1 to ((floor (_timeToLive / _simulationStep)) + 1) do {
|
|
private _velocityMagnitude = sqrt (_velocityX^2 + _velocityY^2);
|
|
|
|
_velocityX = _velocityX + _simulationStep * (_velocityX * _velocityMagnitude * _airFriction);
|
|
_velocityY = _velocityY + _simulationStep * (_velocityY * _velocityMagnitude * _airFriction - 9.81);
|
|
|
|
_posX = _posX + _velocityX * _simulationStep;
|
|
_posY = _posY + _velocityY * _simulationStep;
|
|
|
|
if (_posX >= _posTargetX) exitWith {}; // bullet passed the target
|
|
};
|
|
_posY - _posTargetY
|
|
};
|
|
|
|
private _data = [_distance, _angleTarget, _maxElev, _initSpeed, _airFriction, _timeToLive, _simulationStep, _maxElev];
|
|
|
|
if (_data call _fnc_traceBullet < 0) exitWith {_maxElev - _angleTarget};
|
|
|
|
// Newton Method / Secand Method
|
|
private _angle1 = _angleTarget;
|
|
private _angle2 = _maxElev;
|
|
private _it2 = 0;
|
|
|
|
_data set [7, _maxElev];
|
|
private _f1 = _data call _fnc_traceBullet;
|
|
|
|
if (abs _f1 <= PRECISION) exitWith {0};
|
|
|
|
while {abs _f1 > PRECISION} do {
|
|
_data set [7, _angle2];
|
|
private _f2 = _data call _fnc_traceBullet;
|
|
|
|
_angle1 = _angle2;
|
|
_angle2 = _angle2 - _f2 * (_angle2 - _angle1) / (_f2 - _f1);
|
|
|
|
_f1 = _f2;
|
|
_it2 = _it2 + 1;
|
|
};
|
|
|
|
_angle2 - _angleTarget
|