ACE3/addons/common/functions/fnc_fixPosition.sqf

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/*
* Author: commy2, Jonpas
* Fixes position of an object. E.g. moves object above ground and adjusts to terrain slope. Requires local object.
*
* Arguments:
* Object <OBJECT>
*
* Return Value:
* None
*
* Example:
* bob call ace_common_fnc_fixPosition
*
* Public: No
*/
#include "script_component.hpp"
// setVectorUp requires local object
if (!local _this) exitWith {};
// Objects with disabled simulation and objects with simulation type "house" don't have gravity/physics, so make sure they are not floating
private _hasGravity = simulationEnabled _this && {getText (configFile >> "CfgVehicles" >> typeOf _this >> "simulation") != "house"};
if (!_hasGravity) then {
private _positionASL = getPosASL _this;
// find height of top surface under object
private _surfaces = lineIntersectsSurfaces [_positionASL, ATLToASL [_positionASL select 0, _positionASL select 1, -1], _this];
if (_surfaces isEqualTo []) exitWith {};
private _surfaceHeight = _surfaces select 0 select 0 select 2;
TRACE_2("house",_this,_surfaceHeight);
if (_positionASL select 2 > _surfaceHeight + 0.1) then {
_this setPosASL [_positionASL select 0, _positionASL select 1, _surfaceHeight];
};
};
private _position = getPosATL _this;
// Don't place the object below the ground
if (_position select 2 < -0.1) then {
_position set [2, -0.1];
_this setPosATL _position;
};
// Adjust position to sloped terrain, if placed on ground
// Object without gravity/physics may have negative height when placed on slope, but those objects are definitely on the ground
if (!_hasGravity || {getPosATL _this select 2 == _position select 2}) then {
_this setVectorUp surfaceNormal _position;
};