90 lines
3.3 KiB
C++
90 lines
3.3 KiB
C++
//
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// SuperTuxKart - a fun racing game with go-kart
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// Copyright (C) 2010-2015 Joerg Henrichs
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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 "tracks/check_lap.hpp"
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#include <string>
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#include "config/user_config.hpp"
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#include "io/xml_node.hpp"
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#include "karts/abstract_kart.hpp"
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#include "modes/linear_world.hpp"
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#include "race/race_manager.hpp"
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#include "tracks/track.hpp"
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/** Constructor for a lap line.
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* \param check_manager Pointer to the check manager, which is needed when
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* resetting e.g. new lap counters.
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* \param node XML node containing the parameters for this checkline.
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*/
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CheckLap::CheckLap(const XMLNode &node, unsigned int index)
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: CheckStructure(node, index)
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{
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// Note that when this is called the karts have not been allocated
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// in world, so we can't call world->getNumKarts()
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m_previous_distance.resize(race_manager->getNumberOfKarts());
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} // CheckLap
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// ----------------------------------------------------------------------------
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void CheckLap::reset(const Track &track)
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{
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CheckStructure::reset(track);
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for(unsigned int i=0; i<m_previous_distance.size(); i++)
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{
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m_previous_distance[i] = 0;
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}
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} // reset
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// ----------------------------------------------------------------------------
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/** True if going from old_pos to new_pos crosses this checkline. This function
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* is called from update (of the checkline structure).
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* \param old_pos Position in previous frame.
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* \param new_pos Position in current frame.
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* \param kart_index Index of the kart, can be used to store kart specific
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* additional data.
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*/
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bool CheckLap::isTriggered(const Vec3 &old_pos, const Vec3 &new_pos,
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unsigned int kart_index)
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{
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World* w = World::getWorld();
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LinearWorld* lin_world = dynamic_cast<LinearWorld*>(w);
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float track_length = w->getTrack()->getTrackLength();
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// Can happen if a non-lap based race mode is used with a scene file that
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// has check defined.
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if(!lin_world)
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return false;
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float current_distance = lin_world->getDistanceDownTrackForKart(kart_index);
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bool result = (m_previous_distance[kart_index]>0.95f*track_length &&
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current_distance<7.0f);
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if (UserConfigParams::m_check_debug && result)
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{
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Log::info("CheckLap", "Kart %s crossed start line from %f to %f.",
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World::getWorld()->getKart(kart_index)->getIdent().c_str(),
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m_previous_distance[kart_index], current_distance);
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}
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m_previous_distance[kart_index] = current_distance;
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if (result)
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lin_world->setLastTriggeredCheckline(kart_index, m_index);
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return result;
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} // isTriggered
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