42 lines
1.3 KiB
C++
42 lines
1.3 KiB
C++
// SuperTuxKart - a fun racing game with go-kart
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// Copyright (C) 2014-2015 SuperTuxKart-Team
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 3
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// of the License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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#include "graphics/irr_driver.hpp"
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#include "graphics/wind.hpp"
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#include "utils/helpers.hpp"
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Wind::Wind()
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{
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m_seed = (float)((rand() % 1000) - 500);
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}
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vector3df Wind::getWind() const
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{
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return m_wind;
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}
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void Wind::update()
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{
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vector3df dir(0, 0, 1);
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const u32 now = irr_driver->getDevice()->getTimer()->getTime();
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const float rotation = asinf(noise2d(m_seed, now / 100000.0f)) * RAD_TO_DEGREE;
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dir.rotateXZBy(rotation);
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m_wind = dir;
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}
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