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100 lines
4.3 KiB
Plaintext
100 lines
4.3 KiB
Plaintext
/**
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* fnc HandleFired.
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* Handles wind deflection for projectiles.
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* Is expected to be triggered by the fired eventhandler from BI.
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*
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* Params:
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* 1. unit: Object - Object the event handler is assigned to
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* 2. weapon: String - Fired weapon
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* 3. muzzle: String - Muzzle that was used
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* 4. mode: String - Current mode of the fired weapon
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* 5. ammo: String - Ammo used
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* 6. magazine: String - magazine name which was used
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* 7. projectile: Object - Object of the projectile that was shot (Arma 2: OA and onwards)
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*
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* Author: Glowbal, Ruthberg
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*
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*/
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#include "script_component.hpp"
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if (isNil QGVAR(EnableForAI)) exitWith {false}; // means that the module has not yet initialized
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private ["_unit", "_weapon", "_ammo", "_bullet", "_airFriction", "_index"];
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_unit = _this select 0;
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if (_unit distance ACE_player > 3000) exitWith {false}; // Large enough distance to not simulate any wind deflection.
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if (!GVAR(EnableForAI) && !(isPlayer _unit)) exitWith {false};
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_bullet = _this select 6;
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if (_bullet isKindOf "BulletBase") then {
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_weapon = _this select 1;
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_ammo = _this select 4;
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_airFriction = getNumber(configFile >> "cfgAmmo" >> _ammo >> "airFriction");
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_index = count GVAR(bulletDatabaseLastFrame);
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if (count GVAR(bulletDatabaseLastFrameFreeIndices) > 0) then {
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_index = GVAR(bulletDatabaseLastFrameFreeIndices) select 0;
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GVAR(bulletDatabaseLastFrameFreeIndices) = GVAR(bulletDatabaseLastFrameFreeIndices) - [_index];
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};
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GVAR(bulletDatabaseLastFrame) set[_index, [_bullet, _airFriction, _index]];
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GVAR(bulletDatabaseLastFrameLastFrame) set[_index, time];
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GVAR(bulletDatabaseLastFrameOccupiedIndices) pushBack _index;
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if (count GVAR(bulletDatabaseLastFrameOccupiedIndices) == 1) then {
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[{
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private ["_bullet", "_airFriction", "_index", "_deltaT", "_bulletVelocity", "_bulletSpeed", "_trueVelocity", "_trueVelocity", "_dragRef", "_drag", "_accelRef", "_accel"];
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{
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_bullet = (GVAR(bulletDatabaseLastFrame) select _x) select 0;
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_index = (GVAR(bulletDatabaseLastFrame) select _x) select 2;
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if (!alive _bullet) then {
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GVAR(bulletDatabaseLastFrameOccupiedIndices) = GVAR(bulletDatabaseLastFrameOccupiedIndices) - [_index];
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GVAR(bulletDatabaseLastFrameFreeIndices) pushBack _index;
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};
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} forEach GVAR(bulletDatabaseLastFrameOccupiedIndices);
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if (count GVAR(bulletDatabaseLastFrameOccupiedIndices) == 0) exitWith {
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/// Resetting all the variables.
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GVAR(bulletDatabaseLastFrame) = [];
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GVAR(bulletDatabaseLastFrameLastFrame) = [];
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GVAR(bulletDatabaseLastFrameOccupiedIndices) = [];
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GVAR(bulletDatabaseLastFrameFreeIndices) = [];
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[_this select 1] call cba_fnc_removePerFrameHandler;
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};
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{
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_bullet = (GVAR(bulletDatabaseLastFrame) select _x) select 0;
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_airFriction = (GVAR(bulletDatabaseLastFrame) select _x) select 1;
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_index = (GVAR(bulletDatabaseLastFrame) select _x) select 2;
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_deltaT = time - (GVAR(bulletDatabaseLastFrameLastFrame) select _index);
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GVAR(bulletDatabaseLastFrameLastFrame) set[_index, time];
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_bulletVelocity = velocity _bullet;
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_bulletSpeed = vectorMagnitude _bulletVelocity;
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if (vectorMagnitude wind > 0) then {
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_trueVelocity = _bulletVelocity vectorDiff wind;
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_trueSpeed = vectorMagnitude _trueVelocity;
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_dragRef = _deltaT * _airFriction * _bulletSpeed * _bulletSpeed;
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_accelRef = (vectorNormalized _bulletVelocity) vectorMultiply (_dragRef);
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_bulletVelocity = _bulletVelocity vectorDiff _accelRef;
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_drag = _deltaT * _airFriction * _trueSpeed * _trueSpeed;
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_accel = (vectorNormalized _trueVelocity) vectorMultiply (_drag);
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_bulletVelocity = _bulletVelocity vectorAdd _accel;
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};
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// TODO expand with advanced ballistics functionality.
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_bullet setVelocity _bulletVelocity;
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}forEach GVAR(bulletDatabaseLastFrameOccupiedIndices);
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}, 0, []] call CBA_fnc_addPerFrameHandler;
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};
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};
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true; |